Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.4
4.5
Journals
Plants
Special Issues
Antioxidant Activity of Plant Extracts—Volume II
share announcement

Antioxidant Activity of Plant Extracts—Volume II

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Phytochemistry".

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 2538

Special Issue Editors

Prof. Dr. Andreea Stănilă

E-Mail
Guest Editor
Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 3-5 Calea Mănă¸Stur, 400372 Cluj-Napoca, Romania
Interests: food chemistry; bioinorganic chemistry; analytical chemistry; biochemistry
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Carmen Socaciu

E-Mail Website1 Website2
Guest Editor
Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania
Interests: food chemistry; infrared spectroscopy; food biochemistry; food science; plant physiology; antioxidants; polyphenols; anthocyanins; high-pressure liquid chromatography
Special Issues, Collections and Topics in MDPI journals
Dr. Zorita Diaconeasa

E-Mail Website
Guest Editor
Department of Food Science, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania
Interests: phenolic compounds; anthocyanins; melanoma; chromatography; food chemistry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Antioxidants are specific compounds that protect the cells against the damaging effects of free radicals.

In terms of health properties, many studies have demonstrated their various biological activities, including anti-inflammatory, anticancer, antibacterial, and antiviral properties. Specific bioactive compounds from plants have been described as functioning as antioxidants, enzyme inhibitors, epigenetic modulators, or even suppressors in some signaling pathways.

Throughout the years, researchers have been focused mainly on the antioxidant activity of plants’ bioactive compounds, because it targets an important niche in today’s society: pollution. Every day, we are exposed to radiation, air pollutants, and water and food pollutants, all representing some of the leading causes of oxidative stress. Our cells produce persistently reactive species, such as reactive oxygen species (ROS) and reactive nitrogen species (RNS), which can cause many cardiovascular and neurodegenerative diseases as well as cancer and metabolic diseases. Antioxidants are specific compounds that protect the cells against the damaging effects of free radicals.

Phytochemicals are known to act as free-radical scavengers and metal chelators. Although there are plenty in vitro studies that demonstrate that phytochemicals are some of the most important antioxidant molecules in animal cells, the antioxidant efficacy of some phytochemicals in vivo is less documented due to the poor knowledge of their uptake and bioavailability. However, it is known that high daily consumption of phytochemicals in the form of vegetables, fruits, and beverages may be helpful for scavenging ROS, thus preventing free-radical damage to biological molecules such as lipids, proteins, and DNA.

Phytochemical such as flavonoids, phenolic acids, anthocyanins, and vitamins have been shown to possess a variety of health benefits, and many studies suggest that they may be promising candidates in the treatment of various chronic diseases, including cancer.

This Special Issue of Plants, entitled “Antioxidant Activity of Plant Extracts”, welcomes original research and reviews with a particular focus on the extraction, purification, and phytochemical characterization of antioxidant activities of plant bioactive compounds and their potential health benefits in vivo and in vitro.

Prof. Dr. Andreea Stănilă
Prof. Dr. Carmen Socaciu
Dr. Zorita Diaconeasa
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Plants is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • phytochemicals
  • antioxidants
  • bioactive compounds
  • health benefits

Related Special Issue

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

13 pages, 1616 KiB  
Article
Isolation of a Marker Olean-12-en-28-butanol Derivative from Viscum continuum E. Mey. Ex Sprague and the Evaluation of Its Antioxidant and Antimicrobial Potentials
by Sipho Mapfumari, Buang Matseke and Kokoette Bassey
Plants 2024, 13(10), 1382; https://doi.org/10.3390/plants13101382 - 16 May 2024
Viewed by 147
Abstract
Viscum continuum E. Mey. Ex Sprague (Mistletoe) is a semi-parasitic plant that grows on the branches of other trees with reported numerous biological activities. This study was aimed at isolating a compound/s that will be used as a standard reference for quality control [...] Read more.
Viscum continuum E. Mey. Ex Sprague (Mistletoe) is a semi-parasitic plant that grows on the branches of other trees with reported numerous biological activities. This study was aimed at isolating a compound/s that will be used as a standard reference for quality control of South African-based commercialized mistletoe products and to further perform antioxidant and antimicrobial tests on the isolated compound. A dried sample of mistletoe was ground and extracted successively with hexane, dichloromethane (DCM), acetone and methanol using a serial exhaustive cold maceration procedure. The compound was isolated using column chromatography, and its chemical structure was elucidated using two-dimensional nuclear magnetic resonance (2D NMR) and ultrahigh-performance liquid chromatography-mass spectrometry (UPLC-MS). The antioxidant activity of the compound was determined using DPPH, hydrogen radical scavenging activity and reducing power assays, whereas antimicrobial activity was assessed using the minimum inhibitory concentration (MIC) method. Subjection of the DCM extract to column chromatography resulted in the isolation of a compound elucidated as olean-12-en-28-butanol-1-one, 3-hydroxy-4,4,10, 14, 20-pentamethyl (D4). Both the DPPH, H2O2 radical scavenging activity and reducing power assays revealed a significant antioxidant potential of compound D4 with an IC50 of 0.701 mg/mL, lower than that of gallic acid (0.793 mg/mL) for the H2O2 radical scavenging assay. The results also indicated good antibacterial activity of D4 with an IC50 of 0.25 mg/mL, compared to ciprofloxacin with an IC50 of 0.0039 mg/mL, against two Gram-negative (Pseudomonas aeruginosa, Escherichia coli) and three Gram-positive (Streptococcus pyogenes, Bacillus cereus and Staphylococcus aureus) bacteria. This study is the first to report on the isolation of the olean-12-en-28-butanol derivative from mistletoe of the South African ecotype. Full article
(This article belongs to the Special Issue Antioxidant Activity of Plant Extracts—Volume II)
►▼ Show Figures

Figure 1

26 pages, 10836 KiB  
Article
Phytochemical Screening, Antioxidant Effect and Sperm Quality of the Bomba ceiba Stamen Extracts on Charolais Cattle Sperm Induced by Ferrous Sulfate
by Jiraporn Laoung-on, Sakaewan Ounjaijean, Paiwan Sudwan and Kongsak Boonyapranai
Plants 2024, 13(7), 960; https://doi.org/10.3390/plants13070960 - 26 Mar 2024
Viewed by 621
Abstract
Orange Bombax ceiba (B. ceiba) is an indigenous plant, and its stamen is an important ingredient in traditional Lanna food. There are limitations in scientific reports on the effects of the biological activities of B. ceiba stamens on the male reproductive [...] Read more.
Orange Bombax ceiba (B. ceiba) is an indigenous plant, and its stamen is an important ingredient in traditional Lanna food. There are limitations in scientific reports on the effects of the biological activities of B. ceiba stamens on the male reproductive system. This study aims to investigate the phytochemical compounds of the orange B. ceiba stamen and its potential effect on the antioxidant properties and quality of cattle sperm treated with Fe. The orange BUE had the highest total phenolics, total tannins, total monomeric anthocyanins, and maximal antioxidant potential. The orange BAE had the highest concentration of total flavonoids. LC-QTOF/MS showed that the orange BUE contained the highest number of phytochemical compounds related to male reproductive enhancement. The orange BUE enhanced sperm motility, and both the orange BUE and the BAE enhanced sperm viability and normal sperm morphology via free radical scavenging. It might be suggested that B. ceiba stamens have benefits for sperm preservation, sperm quality, and increasing the economic value of local plants, and that they may be developed and used to guard against oxidative stress from cryodamage induced by frozen semen technology. Full article
(This article belongs to the Special Issue Antioxidant Activity of Plant Extracts—Volume II)
►▼ Show Figures

Figure 1

15 pages, 1458 KiB  
Article
Chemodiversity of Arctic Plant Dryas oxyodonta: LC-MS Profile and Antioxidant Activity
by Nina I. Kashchenko, Daniil N. Olennikov and Nadezhda K. Chirikova
Plants 2024, 13(6), 868; https://doi.org/10.3390/plants13060868 - 18 Mar 2024
Viewed by 607
Abstract
Dryas oxyodonta Yuz. is a perennial evergreen shrub from the Rosaceae family. D. oxyodonta thrives in subalpine and subarctic regions, as well as in highlands spanning from Central Asia to Siberia and Mongolia. Owing to a lack of information on its chemical composition, [...] Read more.
Dryas oxyodonta Yuz. is a perennial evergreen shrub from the Rosaceae family. D. oxyodonta thrives in subalpine and subarctic regions, as well as in highlands spanning from Central Asia to Siberia and Mongolia. Owing to a lack of information on its chemical composition, we conducted qualitative and quantitative chromatographic analyses on extracts from the leaves and flowers of D. oxyodonta sourced from various Siberian habitats. Employing high-performance liquid chromatography with photodiode-array detection and electrospray ionization triple-quadrupole mass spectrometric detection, we identified 40 compounds, encompassing gallotannins, hydroxycinnamates, procyanidins, catechins, flavonoids, and triterpenes. All Siberian populations of D. oxyodonta exhibited a notable abundance of phenolic compounds. Furthermore, we identified rare glycosides, such as sexangularetin and corniculatusin, as potential markers of the chemodiversity within the Dryas genus. Extracts from the flowers and leaves were effective scavengers of free radicals, including DPPH•, ABTS•+−, O2•−, and •OH radicals. Our findings unequivocally establish D. oxyodonta as a rich source of phenolic compounds with potent antioxidant activity, suggesting its potential utility in developing novel functional products. Full article
(This article belongs to the Special Issue Antioxidant Activity of Plant Extracts—Volume II)
►▼ Show Figures

Figure 1

19 pages, 2676 KiB  
Article
The Antioxidant, Antibacterial and Cell-Protective Properties of Bioactive Compounds Extracted from Rowanberry (Sorbus aucuparia L.) Fruits In Vitro
by Mara Aurori, Mihaela Niculae, Daniela Hanganu, Emoke Pall, Mihai Cenariu, Dan Cristian Vodnar, Nicodim Fiţ and Sanda Andrei
Plants 2024, 13(4), 538; https://doi.org/10.3390/plants13040538 - 16 Feb 2024
Viewed by 830
Abstract
Considering that Sorbus aucuparia fruits have been underutilized despite their tremendous potential, this study aimed to correlate the in vitro antioxidant, antibacterial and cell-protective abilities of fruit extracts derived from Sorbus aucuparia Romanian cultivars with their phytochemical composition. Therefore, following the preparation of [...] Read more.
Considering that Sorbus aucuparia fruits have been underutilized despite their tremendous potential, this study aimed to correlate the in vitro antioxidant, antibacterial and cell-protective abilities of fruit extracts derived from Sorbus aucuparia Romanian cultivars with their phytochemical composition. Therefore, following the preparation of ethanolic and carotenoid extracts, phytochemical screening was performed using UV–Vis and HPLC-DAD-ESI-MS methods. The antioxidant activity was analyzed using DPPH and FRAP tests. As the results revealed high contents of bioactive compounds (polyphenols 1.11 mg GAE/g DM, flavonoids 430.06 µg QE/g DM and carotenoids 95.68 µg/g DM) and an important antiradical action (DPPH 24.51 mg/mL and FRAP 0.016 µM TE/mL), we chose to further examine the fruits’ biological properties. The antibacterial capacity was assessed employing agar well diffusion and broth microdilution techniques, with fruits displaying an intense activity against MSSA, MRSA and Enterococcus faecalis, but also E. coli and Pseudomonas aeruginosa. The cell-protective activity was analyzed on gentamicin-stressed renal cells, through MTT and Annexin V-FITC assays. Importantly, a significant increase in viability was registered on stressed cells following extract administration in low doses; nevertheless, viability was noticed to decline when exposed to elevated concentrations, potentially due to the cumulative actions of the extract and gentamicin. These findings offer novel light on the antibacterial activity of Sorbus aucuparia Romanian cultivars, as well as their cell-protective ability in renal cell injury. Full article
(This article belongs to the Special Issue Antioxidant Activity of Plant Extracts—Volume II)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop