Anti-Aging Potential of Plants of the Anak Dalam Tribe, Jambi, Indonesia

The process of skin aging is a physiological phenomenon that can not be avoided. According to global population data, the rate of aging increases by approximately 13% every year. The impact of skin aging has become a significant concern and challenge for developed countries. Consequently, there has been a search for potential new anti-aging agents. This review aims to provide an overview of the current research status of plants of the Anak Dalam Tribe (Indonesian: Suku Anak Dalam [SAD]; referred to as SAD henceforth) in Jambi Province, Indonesia, for the development of potential new anti-aging agents. One such discovery is a product derived from natural ingredients with the ability to prevent premature aging. These new anti-aging plants have been used for centuries by the Anak Dalam tribe, for treating skin diseases and maintaining skin health through traditional remedies. Recent research on herbal formulations used by the SAD community in Indonesia for skin beauty treatments, reported by Research on Medicinal Plants and Herbs or RISTOJA, indicates that 64 plant species are used for skin care. Among these plants, Toona sinensis, Curcuma heyneana, Curcuma zedoaria, Curcuma longa, and Kaempferia rotunda are the most commonly used medicinal plants with anti-aging properties. T. sinensis is a tree, while the others are herbs. T. sinensis shows the highest potential for development as an anti-aging agent, with its extracts, active fractions, and bioactive quercetin isolates known to possess strong anti-aging activities both in vitro and in vivo. Furthermore, C. heyneana, C. longa, C. zedoaria, and K. rotunda also show potential for further research, and three of them have demonstrated good potential for in vivo anti-aging activities. Only K. rotunda demonstrates relatively weaker antioxidant activity compared to T. sinensis, C. heyneana, C. longa, and C. zedoaria. Nevertheless, K. rotunda can still be developed to search for potential opportunities as agents with other activities, while T. sinensis, C. heyneana, C. longa, and C. zedoaria in the findings could be an opportunity to explore the potential of new anti-aging agents. In conclusion, of the five medicinal plants traditionally used by the SAD in Jambi, Indonesia, C. longa has received the most extensive research and shows potential for the development of anti-aging solutions. C. zedoaria, C. heyneana and K. rotunda show good potential for in vivo anti-aging activity. T. sinensis is the least-studied medicinal plant. Nevertheless, it has potential for development, as it is widely used by the SAD community for both traditional medicine and skin care.


Introduction
The process of skin aging is a physiological phenomenon that cannot be avoided.According to the World Health Organization (WHO), approximately 72% of men and 42% holds great potential as a source of new anti-aging remedies.However, this potential has not been fully tapped into by the Indonesian people [22,26,27].Despite that, the SAD residing in the forests of the Bukit Dua Belas region in Jambi Province, Indonesia has extensively utilized forest plants for medicinal purposes and as beauty treatments during traditional wedding rituals, particularly for SAD women [5][6][7]28].Thus, this review highlights the current research status of these plants for the development of promising new anti-aging interventions.C. heyneana, C. longa, C. zedoaria and T. sinensis have very strong antioxidant activity so that their ability is synergistic in neutralizing ROS that cause aging and provide a great opportunity to be developed into potential new anti-aging compounds containing new active compounds, which is found in the plants C. heyneana, C. longa, C. zedoaria and T. sinensis.

Methods
The review was conducted in May 2023 and involved several steps.Firstly, a literature search was performed using Scopus, PubMed, and Springer Link, with specific eligibility criteria and keywords.The collected articles were then converted into PDF format and duplicate articles were eliminated.After that, they were categorized into research articles and review articles.Next, relevant articles were selected based on the topic of interest.Finally, the chosen articles were included in the review.The flow diagram is shown in Figure 1.
with the second-highest number of native medicinal plants after the Amazon rainforest, holds great potential as a source of new anti-aging remedies.However, this potential has not been fully tapped into by the Indonesian people [22,26,27].Despite that, the SAD residing in the forests of the Bukit Dua Belas region in Jambi Province, Indonesia has extensively utilized forest plants for medicinal purposes and as beauty treatments during traditional wedding rituals, particularly for SAD women [5][6][7]28].Thus, this review highlights the current research status of these plants for the development of promising new anti-aging interventions.C. heyneana, C. longa, C. zedoaria and T. sinensis have very strong antioxidant activity so that their ability is synergistic in neutralizing ROS that cause aging and provide a great opportunity to be developed into potential new anti-aging compounds containing new active compounds, which is found in the plants C. heyneana, C. longa, C. zedoaria and T. sinensis.

Methods
The review was conducted in May 2023 and involved several steps.Firstly, a literature search was performed using Scopus, PubMed, and Springer Link, with specific eligibility criteria and keywords.The collected articles were then converted into PDF format and duplicate articles were eliminated.After that, they were categorized into research articles and review articles.Next, relevant articles were selected based on the topic of interest.Finally, the chosen articles were included in the review.The flow diagram is shown in Figure 1.

Herbs with Anti-Aging Properties
Indonesia, located near the equator, boasts a rich abundance of natural ingredients with herbal anti-aging properties [29,30].The country's tropical climate, characterized by high rainfall and temperatures, provides ideal conditions for the robust growth of plants compared to other regions.Indonesia experiences two distinct seasons: the rainy season and the dry season [31][32][33].These seasonal variations significantly impact the phytochemical composition and activity of plants.For example, chokeberry exhibits high levels of phenolic and flavonoid compounds, ranging from 9,710 mg/L to 11,093 mg/L, along with strong antioxidant activity of 12.9-14.6mmol/L, classified as highly potent.These levels are observed when the plant is cultivated under conditions of high rainfall and temperatures, surpassing those grown under less favorable conditions [19,34].This potent antioxidant activity works synergistically to counteract Reactive Oxygen Species (ROS) involved in the photoaging process, commonly known as anti-aging activity [25].Indonesia, specifically the province of Jambi, is home to many plants with antioxidant and anti-aging properties, where people use many herbal plants to use as masks and scrubs for facial and body skin care.
Jambi Province, Indonesia is home to the SAD, a minority community residing in the Bukit Dua Belas Forest Area.The SAD community has a tradition of utilizing traditional medicine for various ailments and skin beauty treatments, which have been passed down from their ancestors.According to data from the Research on Medicinal Plants and Traditional Herbal Medicine (Indonesian: Riset Tanaman Obat dan Jamu [RISTOJA]) in 2015, the Bukit Dua Belas Forest Area, located in Sarolangun Bangko Regency, Bungo Tebo Regency, and Batanghari Regency of Jambi Province, is home to 182 plant species used in herbal remedies for skin care.However, among these, only five plant species are specifically utilized by the SAD community for their skincare treatments [35,36].The literature review reveals that only 30 plant species have been identified for their anti-aging properties.
Based on the study above, the Table 1 below presents the data on plants with anti-aging activities that are abundant in the Bukit Dua Belas area of Jambi, Indonesia, and widely utilized by the SAD community.Brightening, smoothing, and moisturizing the skin [43] 7 Ranunculus blumei L. Ranunculaceae Jawa, Lesser Sunda Is.

Flavonoids, polyphenols, and terpenoids
Anti-aging, antioxidant, and anti-inflammatory Protective effect on some UVB-induced skin photoaging events such as inflammation, collagen degradation, cellular senescence, skin drying, and melanin production through inhibition of the p38-AP-1 Boosting immune system [44] 8

Chlorogenic acid Anti-aging
Have the abilities as antioxidant and anti-inflammatory agent to prevent aging and toxicity because chlorogenic acid exhibits the highest affinity for MMP1, NEP, and PPO3  The literature review identified 30 plant species with anti-aging activity.Ethnobotanically, the plant families that are widely used to maintain the immune system and skin health are Zingiberaceae, Meliaceae, Ranunculaceae, Arecaceae, Muntingiaceae, Asteraceae, Myricaceae, Myrtaceae, Phylanthaceae, Apiaceae, Sapindaceae, and Rutaceae [39][40][41][42][43][44][49][50][51][52][55][56][57]62,64,65].Meanwhile, ethnobotanically, the plant families that are not used to maintain the immune system and skin health but have anti-aging activity are Gnetaceae, Fabaceae, Simoroubaceae, Piperaceae, and Moringaceae and these still have to be introduced to the public regarding their use as anti-aging agents.Several references show that all but of them are predominantly utilized as antioxidants and anti-aging agents by the SAD community in Jambi, Indonesia [38,41,[46][47][48]53,55,[58][59][60][61]63,66].These plants belong to the Zingiberaceae and Meliaceae families.Among them are C. longa, C. heyneana, K. rotunda, and C. zedoaria from the Zingiberaceae families, as well as Toona sinensis (surian leaves) from the Meliaceae family.Additionally, several plants from the Fabaceae family, including P. indicus, P. santalinus, I. bijuga, G. max, S. littoralis and P. vulgaris are also commonly used as antioxidants and anti-aging agents, although they are less frequently utilized by the SAD ethnic group [37].This plant is only used as a cooking spice.
In general, each of the plant species above has both antioxidant and anti-aging activity, where this antioxidant activity works synergistically towards the ability to stabilize the role of Reactive Oxygen Species (ROS) in the photoaging process, so that it can have anti-aging activity by inhibiting the elastase enzyme and collagenase enzymes [67].
Antioxidants can be classified into two types: those derived from natural sources and those synthesized artificially.The long-term use of synthetic antioxidants can have adverse effects and may be carcinogenic.Therefore, there is a demand for natural antioxidant alternatives that are abundantly available in nature.Natural antioxidants work systemically and possess the ability to prevent aging in cells and tissues [14].Examples of plants that meet these criteria include those from the Zingiberaceae family, such as C. heyneana and C. longa, which demonstrate antioxidant and anti-aging activities [68,69].It can be seen that many SAD people use turmeric as a body scrub which is applied to the body at traditional wedding events for women, so that it can be developed into a new anti-aging potential from the curcumin compound contained in C. longa.
Based on the research conducted by Marianne et al. (2021) and Zeeshan et al. (2018), it has been found that the plant C. heyneana contains phytochemical compounds such as curcumin and demethoxycurcumin, which act as antioxidants [68,69].In a study by Rohman et al. (2020), the antioxidant activity of curcumin extracted from C. heyneana was evaluated using the DPPH method, and it exhibited a strong antioxidant capacity with an IC 50 value of 62.5 µg/mL [70].This indicates that the potent antioxidant activity of curcumin works synergistically to stabilize Reactive Oxygen Species (ROS) and combat photoaging, commonly referred to as anti-aging activity [70].C. heyneana is widely used by people for skin care by brewing and drinking it so that it can soften the skin from the inside against exposure to free radicals.
However, the therapeutic efficacy of curcumin as an antioxidant and anti-aging agent is still under clinical debate due to various factors.These include its poor bioavailability, rapid metabolism and elimination, low solubility, instability in gastric pH, presystemic metabolism in the liver, and absorption issues that lead to subtherapeutic plasma concentrations and reduced therapeutic effectiveness [30][31][32].Currently, the latest development is nanodelivery systems for herbal anti-aging products as an approach to address the challenges associated with the direct use of pure phytochemicals in therapy [31,34,35,71].There are still very few nanocosmetic preparations of natural origin such as curcumin as anti-aging agents.
Curcuma heyneana is rich in curcumin, which exhibits anti-aging properties and is extensively used by the SAD community.This plant is abundant in the Bukit Dua Belas area.Traditionally, C. heyneana is employed by the SAD community for skin care, specifically as a body scrub applied to the skin of SAD brides to enhance skin softness and eliminate unpleasant body odors.This scrub is sometimes prepared by combining C. heyneana with other ingredients such as rice flour, turmeric, pandan leaves, and lime, resulting in a natural scrub that is applied daily to the skin before SAD weddings [40,72].The C. heyneana scrub indirectly acts as a natural antioxidant and synergistically prevents premature aging or anti-aging effects [70,73,74].Furthermore, C. longa is another widely utilized plant in traditional herbal cosmetics, particularly as a face mask or scrub to smoothen the skin and remove dead skin cells.In the SAD community of Jambi, Indonesia, this plant is also consumed as a health drink called jamu kunir asam to improve skin texture because it contains antioxidant compounds that not only neutralize free radicals but also possess anti-aging properties [75,76].
The anti-aging activity of these plants is attributed to the curcumin-a phytochemical compound-which is present not only in C. longa and C. heyneana but also in other plants, such as C. zedoaria and K. rotunda.The research conducted by Desmiaty et al. ( 2018)-in which they conducted the antioxidant activity test using the DPPH method-indicated that C. zedoaria obtained an IC 50 value of 2.24 ppm (indicating a very strong category).On the other hand, K. rotunda showed an IC 50 value of 193.17 ppm (indicating a weak category).Additionally, C. zedoaria demonstrated an elastase inhibition capability of 49.24%, while K. rotunda exhibited an elastase inhibition capability of 40.82%.These findings indicate that the antioxidant activity of these plants is closely linked to their anti-aging effects [77][78][79].K. rotunda has weaker antioxidant activity compared to C. zedoria, but the chemical compounds contained in K. rotunda can still be developed as potential agents for other activities such as antielastase, antithyrosinase, UV protection, antibacterial, antimutagenic, anticancer, antinociceptive, antihyperglycemic, anti allergic, anti-androgenic, anthelmintic, and wound healing [79].
Apart from C. heyneana, C. longa is also extensively used by the SAD community for herbal skincare treatments.It is applied as a face mask or scrub to smoothen the skin and remove dead skin cells, particularly for brides.Curcuma longa is not only employed as a herbal cosmetic but is also consumed as a health beverage by the SAD community to boost immune function.This plant contains antioxidant compounds that not only combat bacteria and reduce the risk of diseases but also act as a remedy for throat inflammation.Consequently, it is common to find that SAD people are shielded from illnesses and possess robust immune systems throughout their lives in the forest [76,80,81].
Based on their color, turmeric can be classified into different varieties, including yellow or red turmeric (known as C. longa), black turmeric, and white turmeric (known as C. zedoaria).The yellow and white turmeric varieties are known to possess anti-aging properties beneficial for skin care.Curcuma zedoaria (white turmeric), which is commonly found in Indonesia, particularly in the Bukit Dua Belas area, is frequently used by the SAD community for traditional remedies to treat various ailments.In addition to C. zedoaria, K. rotunda is also utilized in traditional medicine [77,81].
One of the plants from the Meliaceae family is T. sinensis, commonly referred to as the Chinese mahogany tree.According to interviews conducted with the SAD community, the leaves of this tree are extensively utilized for treating skin conditions such as itching.To apply it, the leaves are crushed and applied to the affected itchy skin.Furthermore, other parts of the tree, including the stem, bark, roots, and fruits, are commonly employed for the treatment of various ailments [36,82].Many SAD people use surian stems as building material to make pillars for their houses, the bark is used as a diarrhea medicine and astringent, the roots are used as a detoxifier while the fruit is used to treat eye infections.
Toona sinensis is a plant commonly found in Indonesia and has the potential as a natural source of antioxidants.This plant is extensively used in traditional medicine for treating skin conditions, deworming, and dysentery, as an expectorant, tonic, blood sugar reducer, and for syphilis treatment [83].The plant contains various secondary metabolites, including limonoids, phytol, flavonoids, essential oils, triterpenoids, phenols, and catechins [84], which possess the ability to counteract different pathological conditions in the body caused by oxidative stress related to aging and inflammation processes [85].In the SAD community, many use surian leaves to treat skin diseases and also skin care, so that it can be developed into a potential new anti-aging agent from the new compounds discovered.
Toona sinensis is extensively utilized in Traditional Chinese Medicine (TCM), and its various parts, including the leaves, stems, bark, roots, and fruits, have been employed for treating a wide range of ailments.Traditionally, the stems and leaves of this plant are used for addressing conditions such as dysentery, enteritis, carminative effects, and skin disorders such as itching [82].Furthermore, the roots are used as curatives, the bark is used as an astringent and depurative, and the fruits are utilized as an astringent for treating eye infections [36].
Therapeutic activities derived from natural substances have certain limitations, such as poor bioavailability, instability in gastric pH, low solubility, presystemic metabolism in the liver, and issues related to solubility and absorption within the body.These factors can lead to subtherapeutic plasma concentrations, resulting in a lack of therapeutic effects when using herbal remedies as medicines or cosmetics [32].To address these limitations, the development of new nanotechnology-based approaches for herbal anti-aging is being pursued as a promising solution.

Phytochemistry
Recent research indicates the use of skin beauty treatments for anti-aging purposes among the SAD community in Indonesia.According to data from the Research on Medicinal Plants and Traditional Herbal Medicine (Indonesian: Riset Tanaman Obat dan Jamu [RISTOJA]) in 2015, it was found that 64 plant species have been employed for skin care.The most commonly used medicinal plants for anti-aging by the SAD community include T. sinensis, C. heyneana, C. zedoaria, C. longa, and K. rotunda [37].
Toona sinensis, known as Chinese mahogany, belongs to the Meliaceae family.Its local name is surian merah.It is a woody plant commonly found in East and Southeast Asian countries [86], including Indonesia.Toona sinensis is widespread in various regions of Indonesia, such as Sumatra, East Kalimantan, North Sulawesi, South Sulawesi, Maluku, Bali, West Nusa Tenggara, and Papua [87].In Indonesia, Malaysia, and China, this plant is used as a vegetable source, while in India, it is used as animal feed [88].
Since the 1970s, sterol compounds have been discovered in the leaves of T. sinensis in China.Consequently, research has focused on studying the comprehensive phytochemical constituents of T. sinensis.To date, more than a hundred compounds have been isolated and identified from this plant, including terpenoids, phenylpropanoids, and flavonoids [74].Flavonoids are commonly found in various plants worldwide.Thirteen flavonoids have been isolated and identified in different parts of this plant, including catechin, epicatechin, procyanidin B3, procyanidin B4, quercetin, quercitrin, isoquercitrin, rutin, kaempferol, rhamnopyranoside, astragalin, myricetin, and myricitrin [87,89,90].The total purity of the flavonoids contained in T. sinensis is 66.60% to 71.05% [91].Apart from flavonoids, the terpenoid group in T. sinensis has also been studied for its biological activity as an antioxidant and anti-aging agent.The results of the isolation and characterization of T.sinensis such as limonoids, apotirucallane, cycloartana [92].The active compounds mentioned above such as quercetin, quercitrin, isoquercitrin have anti-aging activity.
Phytochemical screening of the T. sinensis plant has revealed the presence of terpenoids, phenylpropanoids, flavonoids, and anthraquinones.Previous research has reported that T. sinensis exhibits antitumor, antioxidant, antidiabetic, anti-inflammatory, antibacterial, and antiviral activities [91,93].The leaves of this plant contain various bioactive compounds, such as gallic acid, methyl gallate, kaempferol, quercetin, rutin, quercitrin, palmitic acid, linoleic acid, and others [26].Compounds such as quercitrin (quercetin 3-rhamnosyl) and quercetin glycosides are commonly found in the leaves of this plant.Pharmacological studies have shown that quercitrin possesses antioxidant, anti-inflammatory, and anti-allergic properties [26].Figure 2, are some images of T. sinensis.Figure 2 is reprinted/adapted from Peng, W. et al. (2018) [88].and anti-allergic properties [26].Figure 2, are some images of T. sinensis.The surian plant has two types of leaves, namely red surian known as T. sinensis and green surian known as T. sureni.T. sinensis of the red surian species has a very high anthocyanin and flavonol content compared to T. sureni.The content of this compound affects its biological activity as an antioxidant where T. sinensis of the red surian species has very strong antioxidant activity compared to T. sureni, so that the red surian type of T. sinensis is a valuable source of natural antioxidants and is more sought after and desirable than the green T. sureni [94].
Another plant that possesses anti-aging activity and contains bioactive compounds is C. heyneana, which is used to soften the skin and eliminate body odor due to its content of curcumin and its derivative, namely demethoxycurcumin [72].The presence of curcumin in C. heyneana makes it widely utilized as an antioxidant and anti-aging agent [71].Curcumin, which is found in C. heyneana, belongs to the flavonoid group of compounds and imparts a yellow color to the rhizome.Flavonoids are bioactive compounds commonly present in various parts of plants, including seeds, flowers, leaves, stems, and rhizomes.Flavonoids generally exhibit potent antioxidant activity, which is beneficial for the human body as they can repair damaged cells caused by free radicals and prevent premature aging [70].The rhizome of C. heyneana is widely used in brewing drinks for skin care from within the body.Figure 3 shows C. heyneana.According to a study conducted by Rohman, A. et al (2020), through in vitro tests, such as the DPPH method for antioxidant activity, the extract of C. heyneana showed an IC50 value of 62.5 µg/mL.Additionally, the anti-aging activity was assessed by measuring the enzyme inhibition of tyrosinase and collagenase, resulting in an IC50 value of 31.25The surian plant has two types of leaves, namely red surian known as T. sinensis and green surian known as T. sureni.T. sinensis of the red surian species has a very high an-thocyanin and flavonol content compared to T. sureni.The content of this compound affects its biological activity as an antioxidant where T. sinensis of the red surian species has very strong antioxidant activity compared to T. sureni, so that the red surian type of T. sinensis is a valuable source of natural antioxidants and is more sought after and desirable than the green T. sureni [94].
Another plant that possesses anti-aging activity and contains bioactive compounds is C. heyneana, which is used to soften the skin and eliminate body odor due to its content of curcumin and its derivative, namely demethoxycurcumin [72].The presence of curcumin in C. heyneana makes it widely utilized as an antioxidant and anti-aging agent [71].Curcumin, which is found in C. heyneana, belongs to the flavonoid group of compounds and imparts a yellow color to the rhizome.Flavonoids are bioactive compounds commonly present in various parts of plants, including seeds, flowers, leaves, stems, and rhizomes.Flavonoids generally exhibit potent antioxidant activity, which is beneficial for the human body as they can repair damaged cells caused by free radicals and prevent premature aging [70].The rhizome of C. heyneana is widely used in brewing drinks for skin care from within the body.Figure 3 shows C. heyneana.
Pharmaceuticals 2023, 16, x FOR PEER REVIEW 14 of 24 and anti-allergic properties [26].Figure 2, are some images of T. sinensis.The surian plant has two types of leaves, namely red surian known as T. sinensis and green surian known as T. sureni.T. sinensis of the red surian species has a very high anthocyanin and flavonol content compared to T. sureni.The content of this compound affects its biological activity as an antioxidant where T. sinensis of the red surian species has very strong antioxidant activity compared to T. sureni, so that the red surian type of T. sinensis is a valuable source of natural antioxidants and is more sought after and desirable than the green T. sureni [94].
Another plant that possesses anti-aging activity and contains bioactive compounds is C. heyneana, which is used to soften the skin and eliminate body odor due to its content of curcumin and its derivative, namely demethoxycurcumin [72].The presence of curcumin in C. heyneana makes it widely utilized as an antioxidant and anti-aging agent [71].Curcumin, which is found in C. heyneana, belongs to the flavonoid group of compounds and imparts a yellow color to the rhizome.Flavonoids are bioactive compounds commonly present in various parts of plants, including seeds, flowers, leaves, stems, and rhizomes.Flavonoids generally exhibit potent antioxidant activity, which is beneficial for the human body as they can repair damaged cells caused by free radicals and prevent premature aging [70].The rhizome of C. heyneana is widely used in brewing drinks for skin care from within the body.Figure 3 shows C. heyneana.According to a study conducted by Rohman, A. et al (2020), through in vitro tests, such as the DPPH method for antioxidant activity, the extract of C. heyneana showed an IC50 value of 62.5 µg/mL.Additionally, the anti-aging activity was assessed by measuring the enzyme inhibition of tyrosinase and collagenase, resulting in an IC50 value of 31.25According to a study conducted by Rohman, A. et al. (2020), through in vitro tests, such as the DPPH method for antioxidant activity, the extract of C. heyneana showed an IC 50 value of 62.5 µg/mL.Additionally, the anti-aging activity was assessed by measuring the enzyme inhibition of tyrosinase and collagenase, resulting in an IC 50 value of 31.25 µg/mL [40].These findings suggest that the extract of C. heyneana is effective as an antioxidant and can combat free radicals on the skin exposed to sunlight.This can be attributed to the presence of bioactive phytochemical compounds, particularly curcumin, in C. heyneana.Furthermore, this plant also demonstrates potent anti-aging activity, as evidenced by an IC 50 value of <50 ppm or 50 µg/mL [40].So that the C. heyneana rhizome extract can be developed for its anti-aging potential into anti-aging cosmetic dosage form.
Other plants from the Zingiberaceae family widely used by the SAD community for skincare during traditional ceremonies are C. zedoaria and C. longa.The phytochemical compound contained in these plants is curcumin.Curcumin, a natural polyphenol extracted from C. zedoaria and C. longa, exhibits various biological activities, including antioxidant activity [40].Figure 4 shows images of C. zedoaria and C. longa.µg/mL [40].These findings suggest that the extract of C. heyneana is effective as an antioxidant and can combat free radicals on the skin exposed to sunlight.This can be attributed to the presence of bioactive phytochemical compounds, particularly curcumin, in C. heyneana.Furthermore, this plant also demonstrates potent anti-aging activity, as evidenced by an IC50 value of <50 ppm or 50 µg/mL [40].So that the C. heyneana rhizome extract can be developed for its anti-aging potential into anti-aging cosmetic dosage form.
Other plants from the Zingiberaceae family widely used by the SAD community for skincare during traditional ceremonies are C. zedoaria and C. longa.The phytochemical compound contained in these plants is curcumin.Curcumin, a natural polyphenol extracted from C. zedoaria and C. longa, exhibits various biological activities, including antioxidant activity [40].Figure 4 shows images of C. zedoaria and C. longa.The phytochemical compounds present in C. zedoaria and C. longa are yellow pigments known as curcuminoids, which consist of curcumin, demethoxycurcumin, and bisdemethoxycurcumin [95,96].Curcumin is a widely studied and common phytochemical component [40].The difference in phytochemical compounds between C. longa and C. zedoaria lies in their curcumin content.C. longa has the highest curcumin content, ranging from 3% to 8%, compared to C. zedoaria, which contains only 0.1% curcumin.A higher curcumin content results in a greater amount of yellow pigment in turmeric, as seen in C. longa [75].Other chemical constituents include phenylpropanoids and other phenolic components, as well as terpenes such as monoterpenes, sesquiterpenes, diterpenes, triterpenes, alkaloids, steroids, and fatty acids [97].This phenolic component has anti-aging activity.
Curcumin is one of the most commonly used natural compounds as a potential modulator of cellular damage caused by free radicals.It is an active compound isolated from the plants C. longa and C. zedoaria, and it is also found in the plant K. rotunda.Curcumin exhibits antioxidant activity due to the presence of methylene hydrogen and phenol-omethoxy groups [98].Figure 5 shows images of Kaempferia rotunda.The phytochemical compounds present in C. zedoaria and C. longa are yellow pigments known as curcuminoids, which consist of curcumin, demethoxycurcumin, and bisdemethoxycurcumin [95,96].Curcumin is a widely studied and common phytochemical component [40].The difference in phytochemical compounds between C. longa and C. zedoaria lies in their curcumin content.C. longa has the highest curcumin content, ranging from 3% to 8%, compared to C. zedoaria, which contains only 0.1% curcumin.A higher curcumin content results in a greater amount of yellow pigment in turmeric, as seen in C. longa [75].Other chemical constituents include phenylpropanoids and other phenolic components, as well as terpenes such as monoterpenes, sesquiterpenes, diterpenes, triterpenes, alkaloids, steroids, and fatty acids [97].This phenolic component has antiaging activity.
Curcumin is one of the most commonly used natural compounds as a potential modulator of cellular damage caused by free radicals.It is an active compound isolated from the plants C. longa and C. zedoaria, and it is also found in the plant K. rotunda.Curcumin exhibits antioxidant activity due to the presence of methylene hydrogen and phenol-omethoxy groups [98].Figure 5 shows images of Kaempferia rotunda.However, curcumin's therapeutic potential has limitations, such as its low bioavailability related to poor solubility, stability, and absorption in the digestive system.To address these issues, a study by Atarian, M. et al. ( 2019) utilized a nanotechnology-based system, specifically nanohydrogel curcumin with chitosan polymer, for the delivery of natural antioxidant therapy [100].Despite that, the therapeutic efficacy of curcumin is challenged in clinical trials due to its low bioavailability and rapid metabolism and elimination [27].Therefore, further development of curcumin compounds into nanoparticle formulations is necessary to improve their bioavailability.Figure 6 shows the chemical structure of curcumin.However, curcumin's therapeutic potential has limitations, such as its low bioavailability related to poor solubility, stability, and absorption in the digestive system.To address these issues, a study by Atarian, M. et al. ( 2019) utilized a nanotechnology-based system, specifically nanohydrogel curcumin with chitosan polymer, for the delivery of natural antioxidant therapy [100].Despite that, the therapeutic efficacy of curcumin is challenged in clinical trials due to its low bioavailability and rapid metabolism and elimination [27].Therefore, further development of curcumin compounds into nanoparticle formulations is necessary to improve their bioavailability.Figure 6 shows the chemical structure of curcumin.However, curcumin's therapeutic potential has limitations, such as its low bioavailability related to poor solubility, stability, and absorption in the digestive system.To address these issues, a study by Atarian, M. et al. ( 2019) utilized a nanotechnology-based system, specifically nanohydrogel curcumin with chitosan polymer, for the delivery of natural antioxidant therapy [100].Despite that, the therapeutic efficacy of curcumin is challenged in clinical trials due to its low bioavailability and rapid metabolism and elimination [27].Therefore, further development of curcumin compounds into nanoparticle formulations is necessary to improve their bioavailability.Figure 6 shows the chemical structure of curcumin.The chemical structure of curcumin shown above, it reveals that curcumin contains methylene hydrogen and phenol-o-methoxy groups.It is derived from the isolation of C. zedoaria and K. rotunda.In vitro testing was conducted to examine its mechanism of action, specifically its ability to inhibit elastase activity.It was reported that curcumin can protect against aging by inhibiting elastase activity [39].Many SAD people use K. rotunda as a traditional medicine by brewing it and drinking it for healthy skin.
In addition to curcumin, K. rotunda also contains various chemical compounds.Previous studies have identified terpenoids, such as kaempulchraol and kaemgalangol, along with abietane, labdane, and clerodane types in this plant.It also contains phenolic compounds (diarylheptanoids, curcuminoids, and methoxylation derivatives of cinnamic acid), flavonoids (kaempferol and kaempferide), steroids and triterpenes (β-sitosterol), and essential oils (including ethyl trans-p-methoxycinnamate, ethyl cinnamate, cineole, camphene, borneol, pentadecane, and α-pinene) [101][102][103].The characterization of the rutin of novel secondary metabolites with medicinal properties confirms the intra-specific variation among different Kaempferia species [104][105][106], highlighting unexplored curative potentials that require further detailed explanations.Kaempferol, which is present in K. rotunda, exhibits antioxidant activity that synergistically contributes to its anti-aging effects [106,107].Figure 7 shows the chemical structure of kaempferol.The chemical structure of curcumin shown above, it reveals that curcumin contains methylene hydrogen and phenol-o-methoxy groups.It is derived from the isolation of C. zedoaria and K. rotunda.In vitro testing was conducted to examine its mechanism of action, specifically its ability to inhibit elastase activity.It was reported that curcumin can protect against aging by inhibiting elastase activity [39].Many SAD people use K. rotunda as a traditional medicine by brewing it and drinking it for healthy skin.

Pharmacological Activity
T. sinensis leaves with a soft texture not only have a delicious taste, but also have a very wide range of biological activities, one of which is as a very strong antioxidant activity [108].Toona sinensis is widely used in Traditional Chinese Medicine (TCM), and various parts of this plant, such as leaves, stems, bark, roots, and fruits, have been used to treat various diseases.Traditionally, the stems and leaves of this plant are used for treating dysentery, and enteritis, as carminatives, and for alleviating itching and skin conditions [109].The roots are used for curative purposes, the bark acts as an astringent and depurative, while the fruits are used as an astringent for treating eye infections [36].Previous studies have reported that T. sinensis exhibits antitumor, antioxidant, antidiabetic, antiinflammatory, antibacterial, and antiviral activities [36,93].Pharmacological studies have shown that quercitrin possesses antioxidant, anti-inflammatory, and antiallergic properties [36].
Figure 8 shows the chemical structure of quercetin.Quercetin-3-O-α-L-rhamnopyranoside, isolated from C. longa, demonstrates antioxidant activity in scavenging 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals and exhibits strong activity similar to vitamin C. Therefore, C. longa has the potential to be developed for its anti-aging effects or prevention of premature aging.The antioxidant activity works synergistically to stabilize Reactive Oxygen Species (ROS) during the process of photoaging [103,107].Many SAD people use C. longa as a body scrub and mask for skin care.

Pharmacological Activity
T. sinensis leaves with a soft texture not only have a delicious taste, but also have a very wide range of biological activities, one of which is as a very strong antioxidant activity [108].Toona sinensis is widely used in Traditional Chinese Medicine (TCM), and various parts of this plant, such as leaves, stems, bark, roots, and fruits, have been used to treat various diseases.Traditionally, the stems and leaves of this plant are used for treating dysentery, and enteritis, as carminatives, and for alleviating itching and skin conditions [109].The roots are used for curative purposes, the bark acts as an astringent and depurative, while the fruits are used as an astringent for treating eye infections [36].Previous studies have reported that T. sinensis exhibits antitumor, antioxidant, antidiabetic, anti-inflammatory, antibacterial, and antiviral activities [36,93].Pharmacological studies have shown that quercitrin possesses antioxidant, anti-inflammatory, and antiallergic properties [36].
Figure 8 shows the chemical structure of quercetin.Quercetin-3-O-α-L-rhamnopyranoside, isolated from C. longa, demonstrates antioxidant activity in scavenging 1,1-diphenyl-2picrylhydrazyl (DPPH) radicals and exhibits strong activity similar to vitamin C. Therefore, C. longa has the potential to be developed for its anti-aging effects or prevention of premature aging.The antioxidant activity works synergistically to stabilize Reactive Oxygen Species (ROS) during the process of photoaging [103,107].Many SAD people use C. longa as a body scrub and mask for skin care.
Figure 8 shows the chemical structure of quercetin.Quercetin-3-O-α-L-rhamnopyranoside, isolated from C. longa, demonstrates antioxidant activity in scavenging 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals and exhibits strong activity similar to vitamin C. Therefore, C. longa has the potential to be developed for its anti-aging effects or prevention of premature aging.The antioxidant activity works synergistically to stabilize Reactive Oxygen Species (ROS) during the process of photoaging [103,107].Many SAD people use C. longa as a body scrub and mask for skin care.According to a study by Lestari U. et al. (2023), the ethanol extract of T. sinensis leaves at concentrations of 2.5%, 5%, 7.5%, and 10% was compared to the positive control, vitamin C, using the DPPH method to measure antioxidant activity [52]].The IC50 value of the ethanol extract of T. sinensis leaves was determined to be 12.351 ppm, while that of vitamin C was 7.805 ppm.These results indicate that the ethanol extract of T. sinensis leaves exhibits strong antioxidant activity, with an IC50 value below 50 ppm and approaching the IC50 value of vitamin C. The antioxidant activity works synergistically to counteract Reactive Oxygen Species (ROS) during the process of photoaging.Therefore, the ethanol extract and active fractions of T. sinensis leaves have the potential to be developed into pharmaceutical formulations as anti-aging agents [110].
Another plant with anti-aging activity and bioactive compound content is C. heyneana.In a study conducted by Gupta, S. et al. (2024), in vivo testing was performed by observing the histomorphological changes in the skin of rats exposed to ultraviolet (UV) radiation.The results of the in vivo testing showed that the topical application of C. heyneana extract on the rat skin was associated with anti-aging activity.This was evidenced by the improvement in histomorphometric parameters of the UV-induced rat skin, such as According to a study by Lestari U. et al. (2023), the ethanol extract of T. sinensis leaves at concentrations of 2.5%, 5%, 7.5%, and 10% was compared to the positive control, vitamin C, using the DPPH method to measure antioxidant activity [52].The IC 50 value of the ethanol extract of T. sinensis leaves was determined to be 12.351 ppm, while that of vitamin C was 7.805 ppm.These results indicate that the ethanol extract of T. sinensis leaves exhibits strong antioxidant activity, with an IC 50 value below 50 ppm and approaching the IC 50 value of vitamin C. The antioxidant activity works synergistically to counteract Reactive Oxygen Species (ROS) during the process of photoaging.Therefore, the ethanol extract and active fractions of T. sinensis leaves have the potential to be developed into pharmaceutical formulations as anti-aging agents [110].
Another plant with anti-aging activity and bioactive compound content is C. heyneana.In a study conducted by Gupta, S. et al. (2024), in vivo testing was performed by observing the histomorphological changes in the skin of rats exposed to ultraviolet (UV) radiation.The results of the in vivo testing showed that the topical application of C. heyneana extract on the rat skin was associated with anti-aging activity.This was evidenced by the improvement in histomorphometric parameters of the UV-induced rat skin, such as epidermal thickness, the number of sunburned cells, collagen tissue, fibroblasts, and elastin, which all improved after the application of C. heyneana extract [40].
Pharmaceuticals 2023, 16, x FOR PEER REVIEW 18 of 24 epidermal thickness, the number of sunburned cells, collagen tissue, fibroblasts, and elastin, which all improved after the application of C. heyneana extract [40].
The anti-aging activity of four plants from the Zingiberaceae family (i.e., C. zedoaria, K. rotunda, C. longa, and C. heyneana) is attributed to bioactive compounds with chemical structures shown in Figure 9 below: curcumin (a), dihydrocurcumin (b), α-phellandrene (c), and germacrone (d).These bioactive compounds exhibit synergistic antioxidant and anti-aging activities [40].Exposure to UV radiation on rat skin causes dermal changes in cellular components and matrix cells.Free radicals-induced skin damage affects biomolecules, such as lipids, proteins (enzymes), or nucleic acids, triggered by Reactive Oxygen Species (ROS), which leads to the aging process [111].Reactive Oxygen Species contributes to telomere shortening, autophagy, and cellular fatigue.Oxidative stress significantly influences the age and physiological condition of the body, potentially resulting in degenerative diseases, such as atherosclerosis, insulin resistance, cardiometabolic diseases, neurodegenerative disor- Exposure to UV radiation on rat skin causes dermal changes in cellular components and matrix cells.Free radicals-induced skin damage affects biomolecules, such as lipids, proteins (enzymes), or nucleic acids, triggered by Reactive Oxygen Species (ROS), which leads to the aging process [111].Reactive Oxygen Species contributes to telomere shortening, autophagy, and cellular fatigue.Oxidative stress significantly influences the age and physiological condition of the body, potentially resulting in degenerative diseases, such as atherosclerosis, insulin resistance, cardiometabolic diseases, neurodegenerative disorders, and premature aging [112].Therefore, to reduce oxidative stress, antioxidants can be utilized to neutralize free radicals and prevent premature aging.While the body naturally produces antioxidants to inhibit free radicals through cellular oxidation reactions, it also relies on external sources of antioxidants [113].
External antioxidants with potential can be found in C. zedoaria and K. rotunda, which act as DPPH inhibitors.The results of both activity tests indicate that these plants possess anti-aging properties, making them suitable for development as herbal cosmetics [91].The aforementioned research yielded results from antioxidant activity tests using the DPPH method.The IC 50 value of C. zedoaria was 2.24 ppm (very strong category), while K. rotunda showed a value of 193.17 ppm (weak category).In terms of elastase inhibition, C. zedoaria exhibited 49.24% inhibition, whereas K. rotunda showed 40.82% inhibition.It can be concluded that C. zedoaria exhibits better antioxidant and anti-aging activities compared to K. rotunda, making it a suitable ingredient for anti-aging cosmetics [114].
The compound responsible for these anti-aging activities is curcumin (1,7-bis(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5-dione)-the primary active component found in C. longa from the Zingiberaceae family [115,116].Curcumin compounds have many therapeutic activities, such as antioxidant, anti-inflammatory, and anticarcinogenic.The curcumin compound is the result of isolation and identification that has been carried out on plants belonging to the Curcuma genus, including Curcuma long L. (turmeric).Furthermore, there is evidence supporting the potential therapeutic effects of curcumin-rich extracts from C. longa in mitigating hepatotoxicity, in addition to its anti-aging effects [117,118].

Conclusions
Jambi Province, Indonesia is home to the SAD, a minority community residing in the Bukit Dua Belas Forest Area.According to Research on Medicinal Plants and Herbs data, there are 182 plant species used in herbal remedies for skin care.The literature review reveals that only 30 plant species have been identified for their anti-aging properties.Only five plant species are specifically utilized by the SAD community for their skincare treatments.Among the five medicinal plants traditionally used by the SAD in Jambi, Indonesia, C. longa has received the most extensive research and shows potential for the development of anti-aging solutions.Its extract and bioactive compound, curcumin, hold promise as new anti-aging agents, both as multi-compound products and single compounds.C. zedoaria, C. heyneana and K. rotunda show good potential for in vivo anti-aging activity.However, the bioactive compounds of these plants need to be evaluated for their in vivo anti-aging effects.T. sinensis is the least-studied medicinal plant.Nevertheless, it holds great potential for development, as it is widely used by the SAD community for both traditional medicine and skincare, and this is due to its bioactive compounds that can serve as new anti-aging agents.

Figure 1 .
Figure 1.Flow diagram of this study.

Figure 1 .
Figure 1.Flow diagram of this study.

Author Contributions:
Conceptualization, M.M., A.Y.C. and W.S.; methodology, U.L., M.M., A.Y.C. and W.S.; data curation, U.L., M.M., W.S. and A.Y.C.; writing-original draft preparation, U.L.; writing-review and editing, M.M., A.Y.C. and W.S.; supervision, M.M., A.Y.C. and W.S.; funding acquisition, M.M., A.Y.C. and W.S. All authors have read and agreed to the published version of the manuscript.Funding: This research was funded by the Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia as a Doctoral Dissertation Grant in 2023 (No. 148/E5/PG.02.00.PL/2023).It is part of the first author's doctoral study, which is funded by the National Research and Innovation Agency (BRIN).Furthermore, the article processing charges (APC) were funded by Padjadjaran University.

Table 1 .
Indonesian herbal plants acting as antioxidants and anti-aging agents.