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1.
Bol. latinoam. Caribe plantas med. aromát ; 23(4): 636-644, jul. 2024. graf, tab
Article in English | LILACS | ID: biblio-1538072

ABSTRACT

Thechemical composition, antioxidant and antimicrobial activities of the essential oil from aerial parts (leaves and flowers) of Chuquiraga arcuataHarling grown in the Ecuadorian Andes were studied. One hundred and twenty-six compounds were identified in the essential oil. Monoterpene hydrocarbons (45.8%) and oxygenated monoterpenes (44.1%) had the major percentages. The most abundant compounds were camphor (21.6%), myrcene (19.5%), and 1,8-cineole (13.4%). Antioxidant activity was examined using DPPH, ABTS,and FRAP assays. The essential oil had a moderate scavenging effect and reduction of ferric ion capacity through FRAP assay. Antimicrobial activity of the essential oil was observed against four pathogenic bacteria and a fungus. The essential oil exhibited activity against all microorganism strains under test, particularly against Candida albicansand Staphylococcus aureuswith MICs of 2.43-12.10 µg/mL.


Se estudió la composición química, actividades antioxidantes y antimicrobianas del aceite esencial procedente de las partes aérea (hojas y flores) de Chuquiraga arcuataHarling cultivadas en los Andes ecuatorianos. Se identificaron 126 compuestos en el aceite esencial. Los hidrocarburos monoterpénicos (45,8%) y los monoterpenos oxigenados (44,1%) tuvieron el mayor porcentaje. Los compuestos más abundantes fueron alcanfor (21,6%), mirceno (19,5%) y 1,8-cineol (13,4%). La actividadantioxidante se examinó mediante ensayos DPPH, ABTS y FRAP. El aceite esencial tuvo un efecto eliminador moderado y una reducción de la capacidad de iones férricos mediante el ensayo FRAP. Se observó actividad antimicrobiana del aceite esencial contra cuatro bacterias y un hongo patógenos. El aceite esencial mostró actividad contra todas las cepas de microorganismos bajo prueba, particularmente contra Candida albicansy Staphylococcus aureuscon CMI de 2,43-12,10 µg/mL.


Subject(s)
Oils, Volatile/chemistry , Plant Extracts/chemistry , Antioxidants/chemistry , Oils, Volatile/pharmacology , Plant Extracts/pharmacology , Plant Leaves/chemistry , Flowers/chemistry , Ecuador , Antioxidants/pharmacology
2.
Carbohydr Polym ; 339: 122255, 2024 Sep 01.
Article in English | MEDLINE | ID: mdl-38823921

ABSTRACT

Mixed infectious vaginitis poses a serious threat to female reproductive health due to complex pathogenic factors, a long course and easy recurrence. Currently, antibiotic-based treatment methods are facing a crisis of drug resistance and secondary dysbiosis. Exploring effective drugs for the treatment of mixed vaginitis from Paeonia suffruticosa Andr., a natural traditional Chinese medicine with a long history of medicinal use, is a feasible treatment strategy. P. suffruticosa Andr. leaf extract (PLE) has significant anti-bacterial effects due to its rich content of polyphenols and flavonoids. The polyphenols in peony leaves have the potential to make carboxymethyl chitosan form in situ gel. In the current study, PLE and carboxymethyl chitosan were combined to develop another type of natural anti-bacterial anti-oxidant hydrogel for the treatment of mixed infectious vaginitis. Through a series of characterisations, CP had a three-dimensional network porous structure with good mechanical properties, high water absorption, long retention and a slow-release drug effect. The mixed infectious vaginitis mouse model induced by a mixture of pathogenic bacteria was used to investigate the therapeutic effects of CP in vivo. The appearance of the vagina, H&E colouring of the tissue and inflammatory factors (TNF-α, IL-6) confirm the good anti-vaginal effect of CP. Therefore, CP was expected to become an ideal effective strategy to improve mixed infection vaginitis due to its excellent hydrogel performance and remarkable ability to regulate flora.


Subject(s)
Anti-Bacterial Agents , Chitosan , Hydrogels , Paeonia , Plant Extracts , Plant Leaves , Chitosan/chemistry , Chitosan/pharmacology , Chitosan/analogs & derivatives , Female , Animals , Hydrogels/chemistry , Hydrogels/pharmacology , Plant Leaves/chemistry , Mice , Plant Extracts/chemistry , Plant Extracts/pharmacology , Paeonia/chemistry , Anti-Bacterial Agents/pharmacology , Anti-Bacterial Agents/chemistry , Anti-Bacterial Agents/therapeutic use , Vaginosis, Bacterial/drug therapy , Vaginosis, Bacterial/microbiology , Antioxidants/pharmacology , Antioxidants/chemistry
3.
Carbohydr Polym ; 339: 122292, 2024 Sep 01.
Article in English | MEDLINE | ID: mdl-38823937

ABSTRACT

Through adaptive laboratory evolution (ALE) of Sphingomonas sp. ATCC 31555, fermentation for production of low-molecular-weight welan gum (LMW-WG) was performed using glycerol as sole carbon source. During ALE, GPC-MALS analysis revealed a gradual decrease in WG molecular weight with the increase of adaptation cycles, accompanied by changes in solution conformation. LMW-WG was purified and structurally analyzed using GPC-MALS, monosaccharide composition analysis, infrared spectroscopy, NMR analysis, atomic force microscopy, and scanning electron microscopy. Subsequently, LMW-WG obtains hydration, transparency, antioxidant activity, and rheological properties. Finally, an in vitro simulation colon reactor was used to evaluate potential prebiotic properties of LMW-WG as dietary fiber. Compared with WG produced using sucrose as substrate, LMW-WG exhibited a fourfold reduction in molecular weight while maintaining moderate viscosity. Structurally, L-Rha nearly completely replaced L-Man. Furthermore, LMW-WG demonstrated excellent hydration, antioxidant activity, and high transparency. It also exhibited resistance to saliva and gastrointestinal digestion, showcasing a favorable colonization effect on Bifidobacterium, making it a promising symbiotic agent.


Subject(s)
Antioxidants , Fermentation , Glycerol , Molecular Weight , Sphingomonas , Glycerol/chemistry , Glycerol/metabolism , Antioxidants/chemistry , Antioxidants/pharmacology , Sphingomonas/metabolism , Polysaccharides, Bacterial/chemistry , Polysaccharides, Bacterial/pharmacology , Viscosity , Prebiotics , Bifidobacterium/metabolism
4.
Sci Rep ; 14(1): 12593, 2024 Jun 01.
Article in English | MEDLINE | ID: mdl-38824160

ABSTRACT

Coconut (Cocos nucifera) leaves, an unutilized resource, enriched with valuable bioactive compounds. Spectral analysis of purified pentane fraction of coconut leaves revealed the presence of a squalene analog named 4,4'-diapophytofluene or in short 4,4'-DPE (C30H46). Pure squalene standard (PSQ) showed cytotoxicity after 8 µg/ml concentration whereas 4,4'-DPE exhibited no cytotoxic effects up to 16 µg/ml concentration. On senescence-induced WI38 cells, 4,4'-DPE displayed better percentage of cell viability (164.5% at 24 h, 159.4% at 48 h and 148% at 72 h) compared to PSQ and BSQ (bio-source squalene) with same time duration. Similar trend of result was found in HaCaT cells. SA-ß-gal assay showed that number of ß-galactosidase positive cells were significantly decreased in senescent cells (WI38 and HaCaT) after treated with 4,4'-DPE than PSQ, BSQ. Percentage of ROS was increased to 60% in WI38 cells after olaparib treatment. When PSQ, BSQ and 4,4'-DPE were applied separately on these oxidative-stress-induced cells for 48 h, the overall percentage of ROS was decreased to 39.3%, 45.6% and 19.3% respectively. This 4,4'-DPE was found to be more effective in inhibiting senescence by removing ROS as compared to squalene. Therefore, this 4,4'-DPE would be new potent senotherapeutic agent for pharmaceuticals and dermatological products.


Subject(s)
Antioxidants , Cellular Senescence , Cocos , Fibroblasts , Keratinocytes , Plant Leaves , Squalene , Humans , Plant Leaves/chemistry , Squalene/pharmacology , Squalene/chemistry , Cellular Senescence/drug effects , Antioxidants/pharmacology , Antioxidants/chemistry , Keratinocytes/drug effects , Keratinocytes/metabolism , Fibroblasts/drug effects , Fibroblasts/metabolism , Cocos/chemistry , Cell Survival/drug effects , Cell Line , Plant Extracts/pharmacology , Plant Extracts/chemistry , Reactive Oxygen Species/metabolism , Oxidative Stress/drug effects
5.
Food Res Int ; 188: 114499, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38823844

ABSTRACT

The aim of this study was to evaluate the effect of the enzymatic hydrolysis, performed using Alcalase and Protamex enzymes, on the technological functionalities and the antioxidant capacity of whey protein hydrolysates (WPHs) to identify the conditions allowing to obtain target functionality/ies. Samples were characterized for hydrolysis degree (DH), molecular weight distribution, structural properties, and food-related functionalities. Free sulfhydryl groups and surface hydrophobicity significantly decreased with the increase in DH, regardless of the used enzyme. The foaming and antioxidant properties of Alcalase WPHs were higher as compared to those of WPI, reaching the maximum value at DH = 18-20 %, while higher DH resulted in impaired functionality. Gelling properties were guaranteed when WPI was hydrolysed by Protamex at DH < 15 % while foaming and antioxidant abilities were fostered at 15 < DH < 21 %. These results were well correlated with MW distribution and were rationalized into a road map which represents a useful tool in the selection of proper hydrolysis conditions (time, DH, enzyme type) to obtain WPHs with tailored functionalities. Research outcomes highlighted the possibility to drive protein hydrolysis to optimize the desired functionality/ies.


Subject(s)
Antioxidants , Hydrophobic and Hydrophilic Interactions , Protein Hydrolysates , Whey Proteins , Antioxidants/chemistry , Whey Proteins/chemistry , Hydrolysis , Protein Hydrolysates/chemistry , Subtilisins/metabolism , Subtilisins/chemistry , Molecular Weight , Subtilisin/metabolism , Subtilisin/chemistry
6.
Food Res Int ; 188: 114393, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38823852

ABSTRACT

After successfully addressing to mitigate bitterness of naringin through construction Pickering emulsion using pea protein (PP) and naringin (NG) in our previous study, we now probed thermal stability, antioxidant efficacy, and bioavailability. FTIR analysis and UV-vis spectroscopy indicated predominant interactions between PP and NG were hydrogen and hydrophobic bonds. TGA and DSC analyses demonstrated that PP-NG complexes exhibited superior heat-resistance compared to pure PP and NG. Thermal stability assessments indicated a significant retention of NG in the PP-NG Pickering emulsion than the control NG across varied temperatures (4 °C, 25 °C, 37 °C, and 65 °C). Moreover, the antioxidant activity of PP-NG emulsion was dependent on the concentration of NG, as evidenced by DPPH and ABTS free radicals scavenging abilities, ferric reducing power, and lipid peroxidation resistance. Additionally, PP-NG Pickering emulsion exhibited substantially high bioavailability (92.01 ± 3.91%). These results suggest a promising avenue for the application of NG with improved characteristics.


Subject(s)
Antioxidants , Biological Availability , Emulsions , Flavanones , Pea Proteins , Flavanones/chemistry , Antioxidants/chemistry , Pea Proteins/chemistry , Hot Temperature , Spectroscopy, Fourier Transform Infrared , Lipid Peroxidation/drug effects , Pisum sativum/chemistry
7.
Food Res Int ; 188: 114415, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38823855

ABSTRACT

Several scientific studies have warned that the ingestion of dietary lipid oxidation products (LOPs) may initiate or exacerbate the development of several chronic non-communicable diseases in humans. Indeed, the constantly increasing consumption of culinary oils by larger global populations indicates the need for scientific techniques to suppress the evolution of LOPs in thermo-oxidised oils. This study employed a 600.13 MHz frequency NMR spectrometer in evaluating the effect of 10, 50, and 100 ppm concentrations of chemical compounds reported to have antioxidant properties in continuously-stirred and thermally stressed polyunsaturated fatty acid (PUFA)-rich hemp seed oil at a frying temperature of 180℃ for 180 min. Research data acquired showed that the antioxidants α- and γ-tocopherol, γ-oryzanol, ß-carotene, eugenol, resveratrol, ascorbyl palmitate, gentisic acid, and L-ascorbic acid all played a vital role in suppressing the evolution of secondary aldehydic lipid oxidation products in hemp seed oil. However, the most ineffective LOP-suppressing agent was L-lysine, an observation which may be accountable by its poor oil solubility. Nonetheless, trends deduced for compounds acting as antioxidants were mainly unique for each class of agent tested. Conversely, the antioxidant capacity of resveratrol was consistently higher, and this effect was found to be independent of its added amounts. This report provides a direct approach in developing scientific methods for the suppression of LOPs in thermo-oxidatively susceptible PUFA-rich cooking oils.


Subject(s)
Antioxidants , Cannabis , Hot Temperature , Lipid Peroxidation , Plant Oils , Antioxidants/chemistry , Plant Oils/chemistry , Cannabis/chemistry , Lipid Peroxidation/drug effects , Cooking , Seeds/chemistry , Resveratrol/chemistry , Fatty Acids, Unsaturated/analysis , Fatty Acids, Unsaturated/chemistry , Magnetic Resonance Spectroscopy , Ascorbic Acid/chemistry , Plant Extracts
8.
Food Res Int ; 188: 114485, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38823871

ABSTRACT

Whey protein isolate (WPI) is mainly composed of ß-lactoglobulin (ß-LG), α-lactalbumin (α-LA) and bovine serum albumin (BSA). The aim of this study was to compare and analyze the influence of WPI and its three main constituent proteins, as well as proportionally reconstituted WPI (R-WPI) on resveratrol. It was found that the storage stability of resveratrol was protected by WPI, not affected by R-WPI, but reduced by individual whey proteins at 45°C for 30 days. The rank of accelerated degradation of resveratrol by individual whey proteins was BSA > α-LA > ß-LG. The antioxidant activity, localization of resveratrol and oxidation of carrier proteins were determined by ABTS, H2O2 assay, synchronous fluorescence, carbonyl and circular dichroism. The non-covalent interactions and disulfide bonds between constituent proteins improved the antioxidant activity of the R-WPI-resveratrol complex, the oxidation stability of the carrier and the solvent shielding effect on resveratrol, which synergistically inhibited the degradation of resveratrol in R-WPI system. The results gave insight into elucidating the interaction mechanism of resveratrol with protein carriers.


Subject(s)
Antioxidants , Lactalbumin , Lactoglobulins , Oxidation-Reduction , Resveratrol , Serum Albumin, Bovine , Whey Proteins , Resveratrol/chemistry , Resveratrol/pharmacology , Whey Proteins/chemistry , Lactalbumin/chemistry , Antioxidants/chemistry , Antioxidants/pharmacology , Lactoglobulins/chemistry , Serum Albumin, Bovine/chemistry , Circular Dichroism
9.
Food Res Int ; 188: 114514, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38823885

ABSTRACT

Eugenol (EU), a natural bioactive compound found in various plants, offers numerous health benefits, but its application in the food and pharmaceutical industry is limited by its high volatility, instability, and low water solubility. Therefore, this study aimed to utilize the surface coating technique to develop zein-tween-80-fucoidan (Z-T-FD) composite nanoparticles for encapsulating eugenol using a nozzle simulation chip. The physicochemical characteristics of the composite nanoparticles were examined by varying the weight ratios of Z, T, and FD. Results showed that the Z-T-FD weight ratio of 5:1:15 exhibited excellent colloidal stability under a range of conditions, including pH (2-8), salt concentrations (10-500 mmol/L), heating (80 °C), and storage (30 days). Encapsulation of EU into Z-T-FD nanoparticles (0.5:5:1:15) resulted in an encapsulation efficiency of 49.29 ± 1.00%, loading capacity of 0.46 ± 0.05%, particle size of 205.01 ± 3.25 nm, PDI of 0.179 ± 0.006, and zeta-potential of 37.12 ± 1.87 mV. Spherical structures were formed through hydrophobic interaction and hydrogen bonding, as confirmed by Fourier transform infrared spectroscopy and molecular docking. Furthermore, the EU-Z-T-FD (0.5:5:1:15) nanoparticles displayed higher in vitro antioxidant properties (with DPPH and ABTS radical scavenging properties at 75.28 ± 0.16% and 39.13 ± 1.22%, respectively), in vitro bioaccessibility (64.78 ± 1.37%), and retention rates under thermal and storage conditions for EU compared to other formulations. These findings demonstrate that the Z-T-FD nanoparticle system can effectively encapsulate, protect, and deliver eugenol, making it a promising option for applications in the food and pharmaceutical industries.


Subject(s)
Eugenol , Nanoparticles , Polysaccharides , Polysorbates , Zein , Polysaccharides/chemistry , Zein/chemistry , Eugenol/chemistry , Nanoparticles/chemistry , Polysorbates/chemistry , Antioxidants/chemistry , Particle Size , Drug Compounding , Hydrogen-Ion Concentration
10.
Carbohydr Polym ; 339: 122238, 2024 Sep 01.
Article in English | MEDLINE | ID: mdl-38823908

ABSTRACT

The study aimed to develop a novel, transparent and non-toxic coating with antimicrobial, antioxidant, and antifogging properties. The p-coumaric acid-grafted chitosan (CS-PCA) was synthesized via a carbodiimide coupling reaction and then characterized. The CS-PCA coatings were further prepared using the casting method. The CS-PCA coatings obtained exhibited excellent transparency, UV-light barrier ability, and antifogging properties, as confirmed by spectroscopy and antifogging tests. The CS-PCA coatings showed stronger antioxidant capacity and antimicrobial properties against Escherichia coli, Staphylococcus aureus and Botrytis cinerea compared to CS. The multifunctional coatings were further coated on the polyethylene cling film and their effectiveness was confirmed through a strawberry preservation test. The decay of the strawberries was reduced by CS-PCA coated film at room temperature.


Subject(s)
Antioxidants , Chitosan , Coumaric Acids , Escherichia coli , Food Packaging , Fragaria , Fruit , Propionates , Staphylococcus aureus , Chitosan/chemistry , Chitosan/pharmacology , Coumaric Acids/chemistry , Coumaric Acids/pharmacology , Antioxidants/pharmacology , Antioxidants/chemistry , Escherichia coli/drug effects , Staphylococcus aureus/drug effects , Fragaria/microbiology , Food Packaging/methods , Fruit/chemistry , Propionates/chemistry , Propionates/pharmacology , Botrytis/drug effects , Anti-Infective Agents/pharmacology , Anti-Infective Agents/chemistry , Anti-Bacterial Agents/pharmacology , Anti-Bacterial Agents/chemistry , Microbial Sensitivity Tests
11.
Chemosphere ; 358: 142235, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38705416

ABSTRACT

Ultraviolet (UV) radiation is a major contributor to skin aging, cancer, and other detrimental health effects. Sunscreens containing FDA-approved UV filters, like avobenzone, offer protection but suffer from photodegradation and potential phototoxicity. Encapsulation, antioxidants, and photostabilizers are strategies employed to combat these drawbacks. Octocrylene, an organic UV filter, utilizes nanotechnology to enhance sun protection factor (SPF). This review examines recent literature on octocrylene-enriched sunscreens, exploring the interplay between environmental impact, nanotechnological advancements, and clinical trial insights. A critical focus is placed on the environmental consequences of sunscreen use, particularly the potential hazards UV filters pose to marine ecosystems. Research in the Mediterranean Sea suggests bacterial sensitivity to these filters, raising concerns about their integration into the food chain. This review aims to guide researchers in developing effective strategies for photostabilization of UV filters. By combining encapsulation, photostabilizers, and antioxidants, researchers can potentially reduce phototoxic effects and contribute to developing more environmentally friendly sunscreens.


Subject(s)
Sunscreening Agents , Ultraviolet Rays , Sunscreening Agents/chemistry , Sunscreening Agents/toxicity , Humans , Acrylates/chemistry , Nanotechnology , Antioxidants/chemistry , Sun Protection Factor
12.
Int J Med Mushrooms ; 26(6): 69-80, 2024.
Article in English | MEDLINE | ID: mdl-38801088

ABSTRACT

Although mushrooms are widely used for nutraceutical purposes, post-harvest storage is extremely crucial to avoid degradation and quality reduction in fresh mushrooms. Drying treatments are commonly applied in the mushroom industry to extend shelf life. Drying may cause instability of food quality and antioxidant parameters due to unsuitable drying temperatures. Therefore, in this research a common set of temperatures typically used by mushroom growers was applied (50°C, 60°C, 70°C) to Ganoderma lucidum, Lignosus rhinocerus, Auricularia auricula-judae, and Schizophyllum commune to analyze color changes and concentration of elements and phenolic compounds. Mushrooms were chosen based on commonly cultivated species among growers. L. rhinocerus dried at 70°C indicated significantly lower L* (78.90) compared to control (89.94). Element retention in each sample differed depending on the species. The amount of calcium was significantly higher in L. rhinocerus (11,893 mg/kg) and A. auricula-judae (10,941.81 mg/kg) when dried at 60°C. Drying at 70°C resulted in significantly higher magnesium for Sch. commune (13,054.38 mg/kg) and A. auricula-judae (80,56.92 mg/kg). Higher levels of iron and manganese were observed in Sch. commune dried at 70°C (216.54 and 10.02 mg/kg, respectively). Gallic acid had significantly higher retention at 50°C for A. auricula-judae and G. lucidum. Meanwhile, L. rhinocerus and Sch. commune showed significantly higher gallic acid at 60°C. It is evident from these results that temperature does affect the food quality and elemental parameters during the drying process for each mushroom.


Subject(s)
Agaricales , Color , Desiccation , Phenols , Temperature , Phenols/analysis , Phenols/chemistry , Agaricales/chemistry , Desiccation/methods , Antioxidants/analysis , Antioxidants/chemistry
13.
Food Chem ; 452: 139474, 2024 Sep 15.
Article in English | MEDLINE | ID: mdl-38744126

ABSTRACT

In order to prevent the photooxidation of phytosterols, a new type of Pickering emulsion was developed by regulating the oriented distribution of antioxidants in colloidal lipid particles (CLPs) at the oil-water interface. High-melting-point and low-melting-point lipids were tested to modulate their protective effect against phytosterols photooxidation. Results showed that CLPs could stabilize Pickering emulsion and encapsulate antioxidants, providing a dual functional delivery system for phytosterols protection. The Pickering emulsion formed had a particle size of around 350-820 nm, and the crystallization and melting temperatures of tripalmitin particles were approximately 32 °C and 63.8 °C, respectively. The addition of tributyrin or tricaprylin reduced the crystallization and melting temperatures of Pal CLPs and improved the photooxidation emulsion stability. The prepared Pickering emulsion remained stable for a maximum of 12 days under accelerated light-induced oxidation. Among all formulations, the emulsion primarily composed of tripalmitin CLPs, with added tributyrin and resveratrol, exhibited the highest photooxidation stability.


Subject(s)
Antioxidants , Emulsions , Lipids , Oxidation-Reduction , Particle Size , Phytosterols , Emulsions/chemistry , Phytosterols/chemistry , Antioxidants/chemistry , Lipids/chemistry , Colloids/chemistry , Light , Drug Compounding , Drug Stability
14.
Food Chem ; 452: 139614, 2024 Sep 15.
Article in English | MEDLINE | ID: mdl-38744132

ABSTRACT

Soy protein isolate (SPI)-polyphenol conjugates were produced by grafting SPI individually with curcumin, naringenin, and catechin. The resulting conjugates showed better emulsifying properties and were used to develop active films containing rose essential oil. The effect of conjugation on the physicochemical and mechanical properties of these emulsion-based films was evaluated. The results showed that the barrier and mechanical properties of the films were improved when the SPI-polyphenol conjugates were used to emulsify the essential oil; in particular, the SPI-curcumin conjugate showed significant improvement. The improvements on the water vapor and oxygen barrier properties in the films were attributed to the formation of compact structure. Emulsion-based films stabilized by SPI-polyphenol conjugates showed antioxidant and antibacterial activities. They also demonstrated an ability to extend the shelf life of cherry tomatoes, as indicated by better preservation of weight, firmness, and ascorbic acid content.


Subject(s)
Food Packaging , Food Preservation , Oils, Volatile , Polyphenols , Solanum lycopersicum , Soybean Proteins , Solanum lycopersicum/chemistry , Oils, Volatile/chemistry , Oils, Volatile/pharmacology , Soybean Proteins/chemistry , Food Preservation/methods , Food Packaging/instrumentation , Polyphenols/chemistry , Polyphenols/pharmacology , Antioxidants/chemistry , Antioxidants/pharmacology , Anti-Bacterial Agents/pharmacology , Anti-Bacterial Agents/chemistry , Emulsions/chemistry
15.
Food Chem ; 452: 139425, 2024 Sep 15.
Article in English | MEDLINE | ID: mdl-38744128

ABSTRACT

Effect of puffing on conversion of gingerols to shogaols, physicochemical properties as well as antioxidant and anti-inflammatory activities of puffed ginger was investigated. Puffing significantly increased extraction yield and the highest value was 12.52% at 980 kPa. The significant decrease in gingerols and increase in shogaols were occurred after puffing, respectively. Especially, 6-shogaol was dramatically increased from 4.84 to 99.10 mg/g dried ginger. Puffed ginger exhibited the higher antioxidant activities (analyzed by DPPH, ABTS, TPC, and TFC) than those of control, and they were significantly increased with increasing puffing pressure. In case of anti-inflammatory activity, puffed ginger did not inhibit NO production, but significantly inhibited TNF-α and IL-6 productions. Among gingerols and shogaols, 6-shogaol showed significantly strong correlations with both antioxidant and anti-inflammatory activities. Consequently, puffed ginger can be applied to functional food industry, which dramatically increased the contents of 6, 8, 10-shogaols, the main bioactive compounds in ginger.


Subject(s)
Anti-Inflammatory Agents , Antioxidants , Catechols , Fatty Alcohols , Plant Extracts , Zingiber officinale , Zingiber officinale/chemistry , Catechols/chemistry , Catechols/analysis , Antioxidants/chemistry , Anti-Inflammatory Agents/chemistry , Anti-Inflammatory Agents/pharmacology , Fatty Alcohols/chemistry , Fatty Alcohols/analysis , Fatty Alcohols/pharmacology , Plant Extracts/chemistry , Plant Extracts/pharmacology , Animals , Mice
16.
Int J Med Mushrooms ; 26(5): 59-71, 2024.
Article in English | MEDLINE | ID: mdl-38780423

ABSTRACT

To fully utilize Phellinus igniarius fermentation mycelia, the present study investigated the in vitro antioxidant and α-amylase inhibitory properties of four Ph. igniarius strains. Organic solvents were used to extract fatty acids, phenolics, and flavonoids from the selected mushrooms. The composition and bioactivity of the extracts were evaluated. The lipid yield obtained using petroleum ether (7.1%) was higher than that obtained using 1:1 n-hex-ane+methanol (5.5%) or 2:1 dichloromethane+methanol (3.3%). The composition and relative content of saturated and unsaturated fatty acids in the petroleum ether extract were higher than those in other solvent extracts. Furthermore, ethyl acetate extracts had higher flavonoid and phenolic content and better antioxidant activity than other extracts; however, the 70% ethanol extracts had the best α-amylase inhibitory activity. The supernatant from the ethanol precipitation of aqueous and 1% (NH4)2C2O4 extracts could also be biocompound sources. This comparative study is the first highlighting the in vitro antioxidant and α-amylase inhibitory properties of the four strains of Ph. igniarius extracts prepared using different organic solvents, which makes the investigated species and extracts promising for biological application.


Subject(s)
Antioxidants , Flavonoids , Mycelium , Phenols , alpha-Amylases , Antioxidants/pharmacology , Antioxidants/chemistry , alpha-Amylases/antagonists & inhibitors , Mycelium/chemistry , Flavonoids/pharmacology , Flavonoids/analysis , Flavonoids/chemistry , Phenols/pharmacology , Phenols/chemistry , Phenols/analysis , Fatty Acids/analysis , Fatty Acids/chemistry , Solvents/chemistry , Basidiomycota/chemistry , Enzyme Inhibitors/pharmacology , Enzyme Inhibitors/chemistry , Enzyme Inhibitors/isolation & purification , Fermentation
17.
J Mass Spectrom ; 59(6): e5033, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38726726

ABSTRACT

A total of 43 compounds, including phenolic acids, flavonoids, lignans, and diterpene, were identified and characterized using UPLC-ESI-Q-TOF-MS coupled with UNIFI software. The identified flavonoids were mostly isomers of luteolin, apigenin, and quercetin, which were elucidated and distinguished for the first time in pepper cultivars. The use of multivariate data analytics for sample discrimination revealed that luteolin derivatives played the most important role in differentiating pepper cultivars. The content of phenolic acids and flavonoids in immature green peppers was generally higher than that of mature red peppers. The pepper extracts possessed significant antioxidant activities, and the antioxidant activities correlated well with phenolic contents and their molecular structure. In conclusion, the findings expand our understanding of the phytochemical components of the Chinese pepper genotype at two maturity stages. Moreover, a UPLC-ESI-Q-TOF-MS in negative ionization mode rapid methods for characterization and isomers differentiation was described.


Subject(s)
Antioxidants , Capsicum , Phenols , Spectrometry, Mass, Electrospray Ionization , Spectrometry, Mass, Electrospray Ionization/methods , Antioxidants/chemistry , Antioxidants/analysis , Antioxidants/pharmacology , Chromatography, High Pressure Liquid/methods , Capsicum/chemistry , Isomerism , Phenols/chemistry , Phenols/analysis , Flavonoids/chemistry , Flavonoids/analysis , Plant Extracts/chemistry , East Asian People
18.
Drug Des Devel Ther ; 18: 1399-1414, 2024.
Article in English | MEDLINE | ID: mdl-38707612

ABSTRACT

Hydrogen, which is a novel biomedical molecule, is currently the subject of extensive research involving animal experiments and in vitro cell experiments, and it is gradually being applied in clinical settings. Hydrogen has been proven to possess anti-inflammatory, selective antioxidant, and antiapoptotic effects, thus exhibiting considerable protective effects in various diseases. In recent years, several studies have provided preliminary evidence for the protective effects of hydrogen on spinal cord injury (SCI). This paper provides a comprehensive review of the potential molecular biology mechanisms of hydrogen therapy and its application in treating SCI, with an aim to better explore the medical value of hydrogen and provide new avenues for the adjuvant treatment of SCI.


Subject(s)
Hydrogen , Spinal Cord Injuries , Spinal Cord Injuries/drug therapy , Spinal Cord Injuries/metabolism , Hydrogen/pharmacology , Hydrogen/chemistry , Humans , Animals , Antioxidants/pharmacology , Antioxidants/chemistry , Neuroprotective Agents/pharmacology , Neuroprotective Agents/chemistry , Apoptosis/drug effects , Anti-Inflammatory Agents/pharmacology , Anti-Inflammatory Agents/chemistry
19.
Carbohydr Polym ; 337: 122112, 2024 Aug 01.
Article in English | MEDLINE | ID: mdl-38710545

ABSTRACT

The growing concerns on environmental pollution and sustainability have raised the interest on the development of functional biobased materials for different applications, including food packaging, as an alternative to the fossil resources-based counterparts, currently available in the market. In this work, functional wood inspired biopolymeric nanocomposite films were prepared by solvent casting of suspensions containing commercial beechwood xylans, cellulose nanofibers (CNF) and lignosulfonates (magnesium or sodium), in a proportion of 2:5:3 wt%, respectively. All films presented good homogeneity, translucency, and thermal stability up to 153 °C. The incorporation of CNF into the xylan/lignosulfonates matrix provided good mechanical properties to the films (Young's modulus between 1.08 and 3.79 GPa and tensile strength between 12.75 and 14.02 MPa). The presence of lignosulfonates imparted the films with antioxidant capacity (DPPH radical scavenging activity from 71.6 to 82.4 %) and UV barrier properties (transmittance ≤19.1 % (200-400 nm)). Moreover, the films obtained are able to successfully delay the browning of packaged fruit stored over 7 days at 4 °C. Overall, the obtained results show the potential of using low-cost and eco-friendly resources for the development of sustainable active food packaging materials.


Subject(s)
Cellulose , Food Packaging , Lignin , Lignin/analogs & derivatives , Nanocomposites , Nanofibers , Tensile Strength , Wood , Xylans , Food Packaging/methods , Lignin/chemistry , Nanocomposites/chemistry , Cellulose/chemistry , Cellulose/analogs & derivatives , Wood/chemistry , Nanofibers/chemistry , Xylans/chemistry , Antioxidants/chemistry , Fruit/chemistry
20.
Carbohydr Polym ; 337: 122118, 2024 Aug 01.
Article in English | MEDLINE | ID: mdl-38710546

ABSTRACT

Chrysin and rutin are natural polyphenols with multifaceted biological activities but their applications face challenges in bioavailability. Encapsulation using starch nanoparticles (SNPs) presents a promising approach to overcome the limitations. In this study, chrysin and rutin were encapsulated into self-assembled SNPs derived from quinoa (Q), maize (M), and waxy maize (WM) starches using enzyme-hydrolysis. Encapsulation efficiencies ranged from 74.3 % to 79.1 %, with QSNPs showing superior performance. Simulated in vitro digestion revealed sustained release and higher antioxidant activity in QSNPs compared to MSNPs and WMSNPs. Variations in encapsulation properties among SNPs from different sources were attributed to the differences in the structural properties of the starches. The encapsulated SNPs exhibited excellent stability, retaining over 90 % of chrysin and 85 % of rutin after 15 days of storage. These findings underscore the potential of SNP encapsulation to enhance the functionalities of chrysin and rutin, facilitating the development of fortified functional foods with enhanced bioavailability and health benefits.


Subject(s)
Antioxidants , Chenopodium quinoa , Flavonoids , Nanoparticles , Rutin , Starch , Zea mays , Flavonoids/chemistry , Rutin/chemistry , Zea mays/chemistry , Nanoparticles/chemistry , Chenopodium quinoa/chemistry , Starch/chemistry , Antioxidants/chemistry , Antioxidants/pharmacology , Biological Availability , Hydrolysis
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