Search Results (1,129)

Saffron (Crocus sativus L.) is one of the most valued spices worldwide, rich in bioactive apocarotenoids such as crocins, picrocrocin, and safranal, which display antioxidant, neuroprotective, and anticancer properties. Saffron’s chemical composition is critical for its therapeutic efficacy and a combination of components appears essential to reach the best protection and increase tissue resilience, so stigmas were subjected to hydroalcoholic extraction followed by purification via solid-phase extraction to enriched crocin and picrocrocin fractions. The extracts were included in liposomes to enhance their bioavailability and gastrointestinal absorption by oral administration while protecting them in the harsh gastric environment, increasing their permeation and sustaining their release in the gastrointestinal tract. Liposomes were prepared by the reverse-phase evaporation method using saturated or unsaturated lipids extracted from soy. Encapsulation efficiency was determined by HPLC monitoring of trans-4GG crocin, cis-4GG crocin, and picrocrocin. The results indicate that liposomes show greater encapsulation capacity for hydrophilic apocarotenoids such as crocins (≈90% for cis-4GG, ≈50% for trans-4GG crocin) with respect to picrocrocins (<20%). These findings support the application of liposomal carriers to improve the stability, shelf-life, and potential bioavailability of saffron’s bioactive properties for nutraceutical, pharmaceutical, and functional food applications. Full article

This study examines the antioxidant status of four Nostoc and Desmonostoc strains during long-term cultivation in nitrogen-depleted media. Growth rates, retinol and α-tocopherol content, fatty acid composition, and activities of antioxidant enzymes were analysed. The results showed that all tested strains adapted to nitrogen limitation using various cellular mechanisms. Specifically, the strain Nostoc sphaeroides exhibited the highest specific growth rate and elevated glutathione peroxidase activity. The Nostoc commune and Desmonostoc caucasicum strains displayed higher superoxide dismutase activity, suggesting robust antioxidative capabilities. Additionally, Desmonostoc caucasicum exhibited unique adaptive strategies, such as elevated succinate dehydrogenase activity. Generally, fatty acid composition changes showed divergent lipid peroxidation vulnerabilities among the studied strains. Principal component analysis highlighted clear distinctions among the strains in terms of their antioxidant capacities and metabolic adjustments. High retinol content correlated positively with increased catalase activity and fatty acid saturation, whereas α-tocopherol concentration was linked to succinate dehydrogenase activity. The obtained results underscore the robustness of cyanobacterial antioxidant defence systems and highlight their metabolic adaptations under nitrogen deprivation. Understanding these responses offers insight into potential biotechnological applications, such as biofertilizers or therapeutics. Full article

The use of lactose-utilizing microalgae offers a sustainable and cost-effective approach for the bioconversion of dairy industry side-streams and the reduction in microalgae production costs. This work aims to improve the biomass productivity of the lactose-utilizing microalgal strain Graesiella emersonii MSCL 1718 in concentrated cheese whey permeate. It was demonstrated that the mixotrophic growth of the axenic G. emersonii culture resulted in a significantly higher biomass productivity in 20% permeate medium compared to the heterotrophic cultivation. Furthermore, supplementation of the permeate medium with iron, zinc, cobalt, and molybdenum resulted in 12.8%, 12.9%, 9.3%, and 28.9% significant increases (p < 0.05) in biomass synthesis, respectively, compared to the control permeate group. In the subsequent experiment, G. emersonii cultivated in molybdenum-supplemented permeate resulted in 0.34 ± 0.02 g/(L·d) biomass productivity and twofold higher lipid content (30.21 ± 1.29%) compared to the photoautotrophic control in defined synthetic medium. Analysis of the fatty acid composition revealed a twofold increase in saturated fatty acids, reaching 62.16% under mixotrophic cultivation in permeate, compared with the photoautotrophic control. Overall, concentrated cheese permeate proved to be a suitable medium for G. emersonii biomass production, supporting both enhanced growth and increased lipid accumulation. Full article

Background/Objectives: Plants and fruits of Physalis philadelphica Lam. Solanacea are commonly used in traditional medicine to improve some illnesses such as diabetes, in North and Central American countries. The aim was to evaluate the effects of aqueous maceration (He-M) and ultrasound-assisted (He-US) extracts of P. philadelphica husk on hyperglycemia, insulin resistance, hepatic steatosis, and oxidative stress in obese rats. Methods: The effects of husk extracts on carbohydrate and lipid absorption were evaluated using oral starch and lipid tolerance tests in healthy male Wistar rats. Obesity was then induced using a high-fructose and saturated fat diet, followed by 16 weeks of extract administration. Results: He-US significantly reduced the postprandial glycemic spike, while both extracts lowered serum triglyceride levels (~50%) following lipid loading, compared with the negative control. In obese rats, both extracts reduced body weight gain (~10%) and lowered fasting glucose levels (22% for He-M and 15% for He-US), compared with the obese control. He-US also reduced insulin levels (~32%), insulin resistance (~53%), and free fatty acids (~52%), while He-M improved hepatic steatosis and reduced liver triglycerides (~26%). Both extracts reduced hepatic nitrite levels, although only He-M significantly decreased lipid peroxidation (~32%). Additionally, both treatments enhanced hepatic antioxidant enzyme activity. Conclusions: Husk extracts exerted beneficial effects on hyperglycemia, insulin resistance, hepatic steatosis, and oxidative stress markers in obese rats. Full article

Background: Obesity is a disease with high prevalence worldwide, and the accumulation of visceral fat is related to increased cardiovascular risk. The inclusion of polyunsaturated fatty acids (PUFAs) in the diet has been shown to be a promising nutritional strategy. We aimed to examine the associations between PUFAs consumption and visceral adiposity dysfunction, assessed by the visceral adiposity index (VAI). Methods: This cross-sectional study included 697 adults from the SHIP-Brazil cohort. Structured interviews collected sociodemographic, lifestyle, and dietary data. The intake of omega-3, omega-6, EPA, DHA, and EPA + DHA intake assessed through an adapted food frequency questionnaire (FFQ) was categorized into tertiles. Serum lipids were analyzed using the Cobas system, and VAI was calculated by a sex-specific formula and categorized into two groups (low and high VAI, p50), according to sex. Results: Among men, a higher VAI was associated with greater energy intake and higher carbohydrate and fat consumption. Among women, EPA + DHA intake (β = −0.396, 95% CI: −0.639; −0.152, p = 0.001), EPA (β = −0.679, 95% CI: −1.220; −0.138, p = 0.014), and DHA (β = −0.780, 95% CI: −1.207; −0.352, p < 0.001) were negatively associated with VAI, while omega-6 (β = 0.015, 95% CI: 0.003; 0.028, p = 0.017) showed a positive association. No associations were found between saturated and monounsaturated fatty acids and VAI. Conclusions: The EPA + DHA intake, EPA, and DHA intake were inversely associated with VAI in women, but not in men. Omega-6 intake was negatively associated with VAI in men and positively associated with VAI in women. It is important to highlight that, given the cross-sectional design, these associations do not establish temporality or causality. Full article

Black soldier fly (Hermetia illucens) larvae are a promising source of insect lipids, characterized by rapid fatty acid accumulation and a high lauric acid content. This study investigated the effects of dietary black soldier fly oil (BSFO) on muscle quality in largemouth bass (Micropterus salmoides). Experimental diets were formulated to be isonitrogenous, isolipidic, and isophosphoric, with 1.0% and 2.0% BSFO partially replacing soybean oil. A control group received 2.3% soybean oil without BSFO or glycerol monolaurate (GML), while positive controls were supplemented with 0.35% and 0.7% GML. Fish (initial weight: 25.08 ± 0.12 g) were cultured in pond cages for 56 days, and three replicates were established for each treatment group. Muscle quality and nutritional traits were evaluated, including proximate composition, fatty acid profiles, texture properties, fiber diameter, hydroxyproline content, antioxidant capacity, and expression of genes related to myogenesis, atrophy, apoptosis, and mTOR signaling. Compared with the control, the 2.0% BSFO group showed a significant increase in muscle hydroxyproline content (p < 0.05), while GML supplementation led to a significant decrease (p < 0.05). In the 1.0% BSFO group, muscle saturated fatty acid (SFA) and monounsaturated fatty acid (MUFA) contents were unchanged (p > 0.05), but n-3/n-6 polyunsaturated fatty acid (PUFA) ratios and highly unsaturated fatty acid (HUFA) levels were significantly elevated (p < 0.05). The dietary supplementation of BSFO enhanced the levels of high-quality fatty acids in the muscle tissue. Antioxidant capacity was also significantly enhanced in the 1.0% BSFO group (p < 0.05) but reduced in the GML groups (p < 0.05). Texture analysis showed that BSFO significantly improved muscle hardness, elasticity, chewiness, and gumminess (p < 0.05). Gene expression analysis revealed no significant effects of BSFO on genes related to myogenesis (myod and myog) and muscle atrophy (mstn and murf1), or apoptosis-related genes (caspase8, caspase9, and caspase3) (p > 0.05); mTOR signaling pathway-related genes (s6k1 and akt1) were significantly upregulated in the 2.0% BSFO group (p < 0.05). In contrast, 0.7% GML significantly upregulated genes related to myogenesis (myod, myf5, and myog), muscle atrophy (mstn, fbxo32, and murf1), and apoptosis (caspase8, caspase9, and caspase3) (p < 0.05). In summary, dietary supplementation with 2.0% BSFO effectively enhances muscle quality in largemouth bass without negatively impacting muscle development. Full article

This study explores the incorporation of black soldier fly larvae (Hermetia illucens L.; HI) into whole wheat bread to enhance the nutritional quality of this staple food. Two inclusion levels were tested: 10% (HI10) and 30% (HI30). The larvae meal exhibited high protein (37%) and lipid levels (48%) along with a high microbiological safety level. Enriched breads demonstrated enhanced nutritional quality, with a 21–57% increase in protein content, a 3.7–6.0 times increase in lipid content, and significant increases in mineral content, particularly 1.7–3.2 times more calcium among macroelements and 1.3–2 times more manganese among microelements. However, breads contained lower levels of monounsaturated (MUFAs) and polyunsaturated fatty acids (PUFAs) compared to saturated fatty acids (SFAs), with high levels of lauric acid reaching 38–47%. Although significant, the breads exhibited modest increases in total phenolic content (TPC) and antioxidant activity (PCL), with levels 1.1–1.3 times and 1.1–1.2 times higher, respectively. As the proportion of larvae increased to 30%, the lightness, yellowness, and chroma of the bread crumb significantly decreased. The crumb became harder, reducing its springiness, but chewiness remained similar in HI0 and HI10. Sensory evaluations showed no significant differences between HI0 and HI10 for 90% of attributes. The study concluded that incorporating HI larvae into breads enhanced their nutritional qualities while maintaining physical and sensory parameters satisfactory at a 10% addition. Full article

This study aims to enhance the oxidative stability of fish oil through encapsulation in pullulan/sodium caseinate (PUL/NaCAS) nanofibers. Electrospinning was employed to produce three formulations: control (0% fish oil) and samples with 5% and 10% fish oil. Characterization of the emulsions showed that increasing oil content led to larger droplet size and reduced viscosity. Scanning electron microscopy (SEM) analysis revealed surface imperfections and a gradual increase in fiber diameter with higher oil loading. Fourier transform infrared (FTIR) spectroscopy confirmed molecular interactions, and fibers with 10% fish oil showed a shift toward a more amorphous structure. Fish oil incorporation also enhanced hydrophobicity and thermal stability, as indicated by thermal and wettability measurements. Antioxidant assays include 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and total phenolic content (TPC), which showed the highest bioactivity at 5% fish oil, with a slight decrease at 10%, likely due to structural saturation. Encapsulation at 5% fish oil significantly reduced lipid oxidation during storage (hydroperoxide values decreased from 8.6 to 4.8 mM at 60 °C/15 days), demonstrating the protective effect of the nanofiber matrix. Docking and density functional theory (DFT) analyses confirmed stable DHA/EPA–caseinate interactions and increased electronic stability, supporting the experimental results. Compared with conventional carriers such as spray-dried or maltodextrin-based systems, PUL/NaCAS nanofibers offered superior oxidative stability, bioactivity, and a biodegradable matrix. Overall, the 80PUL:20NaCAS:5% fish oil formulation represents a versatile platform for stabilizing omega-3 oils, with potential applications in food preservation, nutraceutical delivery, and functional packaging. Full article

Background/Objectives: Cardiovascular diseases (CVDs) remain the leading cause of mortality worldwide, with elevated low-density lipoprotein cholesterol (LDL-C) and total cholesterol (TC) being major risk factors. Diet is a key modulator of these parameters, and healthful plant-based diets—popular particularly among women—are associated with cardiovascular benefits. The present study aimed to evaluate the serum lipid profile and to identify dietary components associated with differences in lipid fractions in healthy women adhering to different dietary patterns. Methods: This was a cross-sectional, single-center, convenience sample study of 128 healthy women of similar age, normal BMI, and comparable body fat, allocated to four dietary groups: vegans (n = 45), lacto-ovo-vegetarians (n = 52), pescatarians (n = 12), and omnivores (n = 19). Serum lipid profiles were determined using enzymatic kits. Intake of selected nutrients was assessed based on 7-day dietary records. Physical activity was estimated using the physical activity level (PAL) index. Analyses included different ANOVA approaches and PCA. Results: Omnivores exhibited the highest serum concentrations of LDL-C, TC, and TGs compared with other dietary groups. A significant association was noted between elevated TC and higher intake of saturated fatty acids (SFAs), cholesterol, and animal protein, accompanied by lower intake of fiber and plant protein. Additionally, women with lower TGs and higher HDL-C showed lower PAL values. No significant differences in HDL-C concentrations were observed between groups. Conclusions: Plant-based diets, defined by lower consumption of SFAs, cholesterol, and animal protein alongside higher intake of fiber and plant protein, were associated with a more favorable lipid profile. These findings support the role of vegetarian and vegan diets in CVDs prevention and management, particularly when coupled with regular physical activity; however, further interventional studies among diverse populations are necessary to confirm our results. Full article

To enhance the nutritional value of sheep fat, high-melting-point solid fat (HSO) and low-melting-point liquid oil (LSO) were prepared from Altay sheep rump fat via solvent fractionation. The effects of HSO and LSO on lipid metabolism and intestinal health were evaluated in a mouse model. Results showed that HSO, rich in saturated fatty acids (SFA), induced obesity, dyslipidemia, and colonic inflammation in mice. These adverse effects were associated with the upregulation of hepatic lipid synthesis genes such as Sterol regulatory element-binding protein 1c (SREBP-1c) and Fatty acid synthase (FAS), as well as increased expression of pro-inflammatory cytokines including Tumor necrosis factor-alpha (TNF-α) and Interleukin-6 (IL-6) in the colon. In contrast, LSO, which was predominantly composed of unsaturated fatty acids (UFA), did not cause significant metabolic disorders. Instead, it promoted the upregulation of fatty acid oxidation-related genes such as Peroxisome proliferator-activated receptor alpha (PPARα) and Acyl-CoA oxidase 1 (Acox1), helped maintain intestinal microbial balance, and enhanced the production of beneficial short-chain fatty acids (SCFAs), particularly butyrate and propionate. In conclusion, solvent fractionation effectively modulates the fatty acid composition of sheep fat, thereby influencing lipid metabolism and inflammatory responses through the regulation of key gene expression and modulation of the gut microenvironment. Full article

Cooking liquor (CL) from marine species processing has been reported to include a wide range of valuable constituents. In this study, the chemical composition of CL from octopus (Octopus vulgaris) processing, with and without a filtration process, was analysed. Regarding non-filtered CL, values of 15.30, 0.29, 8.85 and 174.53 g·L⁻¹ CL for protein, lipids, ash, and total volatile base-nitrogen (TVB-N), respectively, were detected. The most abundant fatty acids (FAs) (g·100 g⁻¹ total FAs) were C16:0 (37.8), C18:0 (20.8), and C22:6ω3 (13.4). Values of 0.40 and 2.10 were obtained for polyunsaturated FA/saturated FA and ω3 FA/ω6 FA ratios. Macroelement content varied from 0.036 (Ca) to 1.81 (Na) g·L⁻¹ CL. For microelements, values ranged between 0.0015 (Co) and 1.95 (As) mg·L⁻¹ CL. Industrial filtration of CL led to decreased values of protein, lipid, ash, TVB-N, and C22:5ω3; in contrast, an increased presence of C14:0, C18:1ω9, C20:1ω9, and C22:1ω9 was detected. Filtration led to a ca. 50% decrease in macroelement presence. For microelements, this process led to losses of 20–40% (Ba, Pb), 40–60% (As, Fe, Mn), 60–70% (Co, Zn), and 84% (Cd). This study provides a first comprehensive characterisation of octopus cooking liquor as a potential source of bioactive compounds. Full article

In the last twenty years, an increasing volume of research has characterized lipids as dynamic signaling molecules that play essential roles in various physiological and pathological processes, especially concerning chronic diseases such as cardiovascular disorders, diabetes, liver disease, neurodegeneration, cancer, obesity, diabetic and chronic kidney diseases and atherosclerosis. Dysregulation of lipid synthesis and storage, lipolysis, fatty acid oxidation, lipid signaling pathways, and organelle-specific lipid modifications, including mitochondrial phospholipid remodeling and endoplasmic reticulum stress induced by saturated fatty acids, are recognized as contributors to the initiation and progression of this pathogenesis. Concurrently with the increasing comprehension of lipid metabolism, the last decade has seen progress in the understanding of genome control, especially with non-coding RNAs (ncRNAs). MicroRNAs, long non-coding RNAs, and circular RNAs, as ncRNAs, are essential modulators of gene expression at the epigenetic, transcriptional, and post-transcriptional levels that affect a number of lipid metabolism-related processes, such as fatty acid synthesis and oxidation, cholesterol homeostasis, and lipid droplet dynamics. Therapeutically, ncRNAs hold considerable promise owing to their tissue specificity and modularity, with antisense oligonucleotides and CRISPR-based editing currently under preclinical evaluation. In this context, we review recent studies exploring the interplay between ncRNAs and the regulatory networks governing lipid metabolism, and how disruptions in these networks contribute to chronic disease. This emerging paradigm underscores the role of ncRNA–lipid metabolism interactions as central nodes in metabolic and inflammatory pathways, highlighting the need for a holistic approach to therapeutic targeting. Full article

Antarctica is experiencing one of the fastest warming rates globally, profoundly impacting seawater temperature and salinity, with direct consequences for marine life. The present study examined the combined effects of salinity fluctuations at 20, 33 (control salinity), and 41 psu, and temperatures of 2 °C (control temperature) and 8 °C (thermal stress) for 3 days, on the health and physiology of the Antarctic intertidal macroalga Adenocystis utricularis. Photosynthetic activity, photoinhibition, and photoprotective processes were assessed alongside biomarkers of oxidative stress/damage (total ROS, lipid peroxidation, and protein carbonylation) and antioxidant/osmotic response (ascorbate, free amino acids, and proline). The results showed that maximum quantum yield (F_v/F_m) remained stable under both salinity and thermal stress. However, productivity (ETR_max), the photoprotection index (NPQ_max), and irradiance saturation (Ek_ETR) were significantly decreased at 8 °C, remaining constant under salinity fluctuations. At 2 °C, oxidative stress and damage were significantly higher under hypo- and hypersalinity conditions. However, at 8 °C, oxidative stress indicators decreased, accompanied by increased ascorbate levels in both hypo- (20 psu) and hypersalinity (41 psu) treatments compared to the control salinity. While warming temperatures negatively altered the oxidative response of A. utricularis at a 33 psu, we report here an interactive effect between salinity and temperature, leading to an altered stress response to salinity fluctuations under thermal stress. This study provides key information to better understand the adaptation of Antarctic intertidal macroalgae to multifactor climate change consequences. Full article

Consumers increasingly seek clean-label meat products with improved nutrition and stability. We evaluated a collagen hydrolysate–cranberry mixture (CH-CR) as a functional additive in cooked sausages. Two formulations—control and CH-CR—were assessed for fatty acid profile; lipid and protein oxidation during storage; antioxidant capacity ferric-reducing antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, and half-maximal inhibitory concentration (IC50); amino acid composition; and instrumental color. Relative to the control, CH-CR produced a more favorable lipid profile: lower saturated fatty acids (SFAs) 23.9% vs. 28.0%, higher monounsaturated fatty acids (MUFAs) 53.2% vs. 49.3%, slightly higher polyunsaturated fatty acids (PUFAs) 23.3% vs. 22.7%, a higher PUFA/SFA ratio of 0.97 vs. 0.81, and a lower omega-6/omega-3 (n-6/n-3) ratio of 13.5 vs. 27.1, driven by higher alpha-linolenic acid (ALA) 1.6% vs. 0.8%, with trans fats <0.1%. Storage studies showed attenuated oxidation in CH-CR: lower peroxide value (PV) at day 10 8.1 ± 0.4 vs. 9.8 ± 0.5 meq/kg and lower thiobarbituric acid-reactive substances (TBARS) at day 6 0.042 ± 0.004 vs. 0.055 ± 0.006 mg MDA/kg and day 10 0.156 ± 0.016 vs. 0.590 ± 0.041 mg MDA/kg); the acid value at day 10 was similar. Antioxidant capacity increased with CH-CR FRAP 30.5 mg gallic acid equivalents (GAE)/g vs. not detected; DPPH inhibition was 29.88% vs. 10.23%; IC50 56.22 vs. 149.51 µg/mL. The amino acid profile reflected collagen incorporation—higher glycine+proline+hydroxyproline 2.37 vs. 1.38 g/100 g and a modest rise in indispensable amino acids (IAAs) 5.72 vs. 5.42 g/100 g, increasing the IAA/total amino acid (TAA) ratio to 0.411 vs. 0.380. CH-CR samples were lighter and retained redness better under light, with comparable overall color stability. Overall, CH-CR is a natural strategy to improve fatty acid quality and oxidative/color stability in sausages. Full article

Lipids obtained from microalgae have recently received significant attention from the energy and food industries. Microalgae are promising alternatives and are more sustainable sources of lipids for the food industry, which faces a growing demand for food and increased environmental awareness among consumers. This study provides a bibliometric review of research articles published between 2019 and 2024 with the aim of understanding the future trends and tendencies of the applications of microalgal lipids in the food industry. A thorough assessment of 255 articles retrieved from the Scopus database showed an apparent decrease in the number of publications per year within the analyzed timeframe. The predominant focus has been basic research conducted on a lab-scale using chlorophytes (green algae) to optimize lipid production by modulating physicochemical cultivation parameters (i.e., nutrient availability, temperature, light, and pH). Lipids were mainly extracted using the Bligh and Dyer or Folch methods, quantified gravimetrically, and characterized using gas chromatography coupled to mass spectrometry. Publications referring to polyunsaturated fatty acids, such as omega-3 and omega-6, were the most abundant. The results emphasized the significance of microalgae as a promising biotechnological platform for the production of lipids within the food industry. Full article