JOURNAL OF FOOD BIOCHEMISTRY
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2022
·Vol. 46
·期 8
·e14192
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IF 3.654
Hongan Li,Chengyue Zhang,Zeyuan Deng,Bing Zhang,Hongyan Li
The quantum chemical density functional theory and in vitro chemical-based antioxidant assays were used to research the reaction mechanism of delphinidin/pelargonidin with free radicals including superoxide anion radicals (O 2 − ∙) and hydroperoxide radicals (OOH∙). The geometric configuration, bond dissociation energy, PCM (polarizable continuum model) solvent model reaction enthalpy changes were studied to explain the transition states, and the reaction enthalpy change value was calculated to determine the active site. From the results of spatial configuration, delphinidin showed a stronger conjugation effect than that of pelargonidin. The dihedral angle between the three rings of delphinidin was almost 180°, and the angle between the B and C rings was only −2.81868°. Both coplanar and antioxidant activity of delphinidin was better than pelargonidin. The consequences of reaction enthalpy change in PCM were consistent with the bond dissociation energy. The phenolic hydroxyl bond dissociation energy of delphinidin was slightly smaller than that of pelargonidin. Moreover, the C4' site of delphinidin and the C3 site of pelargonidin were the active sites for scavenging free radicals. The free radical scavenging ability of delphinidin was marginally higher than that of pelargonidin. On the other hand, in vitro antioxidant results proved the scavenging ability of delphinidin and pelargonidin on superoxide anions, DPPH, and ABTS ∙+ free radicals. It was shown that the chemical-based antioxidant activity was consistent with the theoretical calculation results, with delphinidin showing greater antioxidant activity. These results could explain the antioxidant mechanism of delphinidin/pelargonidin in scavenging free radicals from chemical reactions. Practical applications This manuscript explained the antioxidant mechanism of delphinidin/pelargonidin in scavenging free radicals through the analysis of the geometric configuration of delphinidin/pelargonidin and the theoretical calculation of the reaction transition state. It could also speculate on the possible reaction sites, and provide a basis for judging how to efficiently select antioxidants with great antioxidant activity.
研究领域:
化学
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生物化学
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分子生物学
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药理学
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产品关联
DOI
PubMed
高影响因子
FOOD SCIENCE AND BIOTECHNOLOGY
·
2023
·
IF 2.9
Wu Jiao,Zhao Shan,Chen Xin,Jiu Yuanda,Liu Junfeng,Gao Jinglin,Wang Shijie
Honey quality is in relation to botanical origin, and physicochemical properties, elemental composition, and antioxidant activity have been used for assessment and identification of honeys. The goal of this study is to contribute to the general analysis of five unifloral honeys from Cocos nucifera L., Dalbergia benthami Prain, Bombax ceiba L., Castanea mollissima Bl., and mangrove in Hainan province, China. Our results revealed that B. ceiba honey had the highest pH (4.27), color (139.33 mm Pfund), ash content (1.03 g/100 g), and electrical conductivity (1312.00 μS/cm) in five unifloral honeys. Furthermore, B. ceiba honey also contained the highest levels of total phenolic content (75.54 mg GAE/100 g) and total flavonoid content (29.22 mg RE/100 g), as well as the strongest antioxidant activity (DPPH IC 50 value, 3.97 mg/mL; FRAP value, 6527.43 µmol TE/kg). Moreover, we revealed a considerable variation in element contents in honeys using ICP-MS, with potassium being the most predominant element. B. ceiba honey had the highest contents of K, Ca, Mg, and P, whereas the highest amount of Na was found in mangrove honey. Overall, our data indicated that B. ceiba honey deserves further research as a potential antioxidant agent.
研究领域:
农业
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食品科学
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分析化学
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生物化学
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产品关联
DOI
PubMed
高影响因子
Fermentation-Basel
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2023
·Vol. 9
·期 4
·322
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IF 3.7
Jian Wang,Quanjin Jiang,Zhenyu Huang,Yan Wang,Hynek Roubik,Kai Yang,Ming Cai,Peilong Sun
Soybean meal is a class of by-products obtained from the processing of soybean products. Despite its high nutritional value, the presence of glycoside isoflavones limits human use of soybean meal. This study evaluated the effect of solid-state fermentation (SSF) with different edible mushroom mycelia (Pleurotus ostreatus,Hericium erinaceus, andFlammulina velutipes) on the proximate composition, antioxidant properties, and physicochemical properties of fermented soybean meal powder (SP). The results revealed that fermented SP had a higher nutritional value when compared to SP.P. ostreatuswas the most pronounced among the three species. Crude protein content was found to have increased by 9.49%, while the concentration of glutamate and aspartic acid increased by 23.39% and 23.16%, respectively. SSF process significantly increased the total polyphenol content (TPC) and aglycone isoflavone content by 235.9% and 324.12%, respectively, resulting in increased antioxidant activity (evaluated by the DPPH, •OH, ABTS+assays). Microstructural changes in fermented SP and nutrient degradation and utilization were observed. Thus, fermented SP can be used as a raw material with enhanced nutritional properties to develop new functional foods, such as plant-based foods represented by plant meat. It provides a promising approach for increasing the added value of soybean meal.Keywords:soybean meal;solid-state fermentation;edible mushrooms;nutritional value
研究领域:
食品科学
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微生物学
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营养学
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生物技术
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产品关联
DOI
高影响因子
Food Chemistry-X
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2023
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IF 6.1
Zhiyong Xue,Juan Liu,Qing Li,Yuanyuan Yao,Yalin Yang,Chao Ran,Zhen Zhang,Zhigang Zhou
Lipoic acid ferulate (LAF) was synthesized and its anti-free radical ability in vitro was determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-azino-bis (3-ethylbenzothiazoline-6-sulfonicacid) (ABTS) assays. Protective effects of LAF in stabilizing fish oil were tested, compared to antioxidants such as lipoic acid, ferulic acid and tert -butylhydroxyquinone (TBHQ) by measuring peroxide values, thiobarbituric acid reactants, p -anisidine values, nuclear magnetic resonance (NMR) spectra and gas chromatography–mass spectrometry (GC–MS) spectra of fish oil during accelerated storage (12 days, 80 °C). The inhibitory effect of these antioxidants on fish oil oxidation followed the order TBHQ ≧ LAF > ferulic acid > lipoic acid. In addition, the omega-3 polyunsaturated fatty acids were the first to be oxidized. The formation of oxidation products followed a first-order kinetic model, and the addition of LAF effectively reduced the reaction rate constants. Therefore, LAF can effectively slow down the formation of oxidative products and prolong the shelf life of fish oil.
研究领域:
食品科学
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化学
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生物化学
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产品关联
DOI
PubMed
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2023
·
IF 6
Qianqian Chen,Li Yu,Huifen Zhou,Haofang Wan,Yangyang Zhang,Haitong Wan,Jiehong Yang
The Box-Behnken design-response surface methodology (BBD-RSM) and Back-propagation neural network prediction model optimized by Simulated annealing (SA-BPNN) were used to optimize the extraction process of Astragali radix - Paeoniae radix alba by the green natural deep eutectic solvent (NADES), and the antioxidant activity of them was discussed. The best NADES for extracting Astragali radix - Paeoniae radix alba need to be screened out. The comprehensive evaluation value of the extraction yield was used as the index. The BBD-RSM and SA-BPNN were established for prediction and optimization. The antioxidant activity of Astragali radix - Paeoniae radix alba in vitro and in vivo was studied by detecting 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging rate and ferric reducing antioxidant power (FRAP) and the expression levels of SOD, MDA and GSH-Px in rat plasma. The results showed that the best NADES formula screened was Betaine-Urea (Bet-Ur). Compared with the BBD-RSM, the SA-BPNN had a higher degree of fitting, the comprehensive evaluation value was higher, and the error between tested and predicted value was smaller, which was more suitable as a prediction model for the extraction yield of Astragali radix - Paeoniae radix alba . Through the determination of antioxidant kits and oxidative factors, the results showed that Astragali radix - Paeoniae radix alba had antioxidant activity in vitro and in vivo . The study on the extraction process optimization and antioxidant activity of Astragali radix - Paeoniae radix alba were expected to provide a theoretical basis for its effective utilization.
研究领域:
药学
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分析化学
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生物技术
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药理学
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产品关联
DOI
高影响因子
BIOORGANIC CHEMISTRY
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2025
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IF 4.7
Wanzhou Yang,Zhiyuan Tai,Yuexin Pan,Wenhao Zhang,Jia Ran,Zeyuan Yu,Xiaodong Yu,Qiyi He
Oxidative stress, arising from a dysregulation between the generation of reactive oxygen species (ROS) and antioxidant defense mechanisms, is closely linked to the pathogenesis of numerous chronic diseases. To identify natural peptide-based antioxidants, rabbit meat proteins were enzymatically hydrolyzed using seven proteases. Among them, Hydrolysates produced by papain demonstrated the greatest radical scavenging activity, with DPPH and ABTS inhibition rates of 51.50 % and 61.50 %, respectively. Ultrafiltration and Sephadex G-15 fractionation revealed that the <3 kDa fraction (PH3) and its subfraction F5 possessed the strongest antioxidant activity. LC-MS/MS analysis of F5 identified 163 peptides, of which 56 were predicted to exhibit antioxidant potential using PeptideRanker and AnOxPePred algorithms. Notably, seven novel peptides showed strong binding affinities to Keap1 (binding energy < −8.0 kcal/mol) in molecular docking, suggesting possible modulation of the Keap1–Nrf2 antioxidant pathway. Quantum chemical analysis (HOMO–LUMO orbitals and electrostatic potential mapping) combined with radical scavenging assays demonstrated that electron-donating aromatic residues (Trp, Tyr) played key roles in antioxidant activity via hydrogen atom and electron transfer mechanisms, establishing a molecular-level structure–activity relationship. In vivo validation using an AAPH-induced zebrafish model confirmed the peptides' safety and efficacy, including reduced ROS levels and restored endogenous antioxidant enzyme activities (SOD and CAT). Collectively, these findings provide mechanistic insight into the antioxidant action of rabbit-derived peptides and support their potential application as natural antioxidants for functional food development and oxidative stress-related disease prevention.
研究领域:
食品科学与技术
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生物化学
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分子生物学
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营养生物化学
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计算化学
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药理学
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肽类研究
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产品关联
DOI
PubMed
高影响因子
ULTRASONICS SONOCHEMISTRY
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2024
·
IF 8.7
Haixia Che,Rui Zhang,Xianyao Wang,Hong Yu,Xuepeng Shi,Jie Yi,Jiawen Li,Qi Qi,Ruizhi Dong,Qian Li
Phyllanthi Fructus (PF) is a valuable botanical resource with a long history of traditional use, known for potent antioxidant and anti-inflammatory effects attributed to its rich contents of bioactive compounds, particularly polyphenols. However, current extraction techniques limit the utilization of polyphenols from PF. This study aimed to achieve the maximum polyphenol yield and improve the antioxidant activity of PF extracts to promise PF’s prospects for modern healthcare. Firstly, ultrasonic-assisted extraction (UAE) was employed to extract the polyphenols in PF and a combination of Plackett-Burman designs (PBD) and response surface methodology (RSM) was applied to optimize UAE’s conditions. Next, cellular superoxide dismutase (SOD) and malondialdehyde (MDA) were used to assess the antioxidant activity of extracted polyphenols. Ultra-Performance Liquid Chromatography coupled with Quadrupole Time-of-Flight Mass Spectrometry (UPLC-Q-TOF MS) was utilized to characterize polyphenol components in the PF extracts. Finally, network pharmacology and molecular docking analysis were performed to screen the potential target proteins of polyphenols from PF. As a result, the optimized polyphenol yield was 213.49 mg/g, and the antioxidant activities, measured by ability of DPPH scavenging, ABTS+ scavenging, and FRAP were 76.95 %, 2.24 mmol/g, 2.34 mmol/g, respectively. PF extracts also showed good antioxidant capabilities at cellular level. 26 polyphenol components were identified in the PF extracts. Among these, ellagic acid, myricetin, and eriodictyol may exert antioxidant effects by interacting with AKT serine/threonine kinase 1 (AKT1). In conclusion, our study provides valuable insights into the optimizing PF extraction and underscores its potential applications in enhancing natural polyphenols extraction using UAE with a combination of PBD and RSM. These findings offer a promising avenue for the development and utilization of PF, and could serve as a reference for similar extraction processes in the future.
研究领域:
生药学
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分析化学
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药学
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生物化学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
PROCESS BIOCHEMISTRY
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2024
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IF 3.7
Yidan Zhang,Hui Lian,Linhui Yang,Lingling Tong,Yang Wu,Suxing Jin,Dongsheng Guo
Ophiocordyceps gracilis is a type of fungus commonly utilized in both health food and Chinese medicine. Herein, we prepared antioxidant hydrolysate from O. gracilis , and isolated and purified the prepared hydrolysate to obtain O. gracilis peptides-4-3-1 (OGP-4-3-1) grade with the highest scavenging activity on DPPH, ABTS and hydroxyl radicals. Three new peptides with high antioxidant capacity were identified as LFNHF, PLDRHPF and YPFLRPL, respectively. The three peptides can reduce the proportion of senescent cells conveying positive expression of senescence-associated-β-galactosidase (SA-β-Gal) and increase survival pace of H 2 O 2 -induced human hepatocellular carcinomas (HepG2 cells), and the protective effects on cellular against senescence might be related to their increase in the activities of antioxidant enzymes, as well as the decrease in the concentration of malondialdehyde (MDA) and reactive oxygen species (ROS). The molecular docking results indicated that they could form durable hydrophobic and hydrogen bonds with critical amino acid residues of the Kelch-like ECH-associated protein 1 (Keap1), which could potentially modulate pathway of nuclear factor erythroid 2-related factor 2 (Nrf2) in conjunction with Keap1. In conclusion, the current research offers a theoretical foundation for the further development of the anti-aging effect of OGP, which has a broad application prospect in the fields of functional food and cosmetics.
研究领域:
生物化学
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药理学
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细胞生物学
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食品科学
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化妆品学
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产品关联
DOI
高影响因子
JOURNAL OF ETHNOPHARMACOLOGY
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2024
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IF 4.8
Zhengchao Ji,Beihan Sun,Ting Yang,Xuan Li,Zhenwei Zhang,Mengfan Bao,Liping Zhao,Hongyin Lou,Yanyan Li,Guoxiang Sun,Jing Huang
Ethnopharmacological relevance YiXinShu capsule (YXSC), originally from the classical TCM formula named “Sheng-Mai-San”, has been extensively utilized in clinic for the treatment of cardiovascular diseases. However, there were few reports about the quality assessment of YXSCs both internationally and domestically. Aim of the study The objective was to develop a multi-strategy platform incorporating systematic quantitative fingerprint analysis and antioxidant activity determination, with chemometric analysis and bivariate correlation analysis as the auxiliary approaches, to assess and monitor the quality of YXSCs. Materials and methods Firstly, according to the Chinese Pharmacopoeia (2020 edition), 12 key indicator components from seven herb medicines were quantified by HPLC method. Then, three-dimensional fingerprints comprising five-wavelength fusion fingerprint (FWF-FP), electrochemical fingerprint (EC-FP) and Differential Scanning Calorimetry fingerprint (DSC-FP) were established to assess and monitor YXSCs using systematically quantified fingerprint method (SQFM) and principal component analysis (PCA). Moreover, by integrating the analysis of the three-dimensional fingerprints, the quality of YXSCs from different batches was effectively screened. Finally, the antioxidant activity of this TCM was assessed through DPPH and ABTS methods, and the L-ascorbic acid equivalent antioxidant capacity (AEAC) values were compared to evaluate the antioxidant activities of the two methods. A Partial Least Squares (PLS) model was used to develop the spectrum-activity relationship between FWF-FP and AEAC, and a bivariate correlation analysis (BCA) was used to assess the correlation between FWF-FP and EC-FP. Results The key indexes including tanshinone I, t ol , t oe , A tp , first exothermic peak, and second exothermic peak can differentiate between various batches of YXSCs based on their three-dimensional fingerprint profiles. The integration evaluation results from 42 batches of YXSCs were categorized into 2–5 grades, indicating good quality consistency across different batches. In vitro studies have indicated a significant antioxidant activity capacity of YXSCs. The PLS model revealed that 37 out of the 41 fingerprint peaks exhibited antioxidant activity. The overall trend of BCA was consistent with PLS model results. Conclusion This research presents a scientific and holistic strategy for the quality consistency evaluation of YXSCs, thereby offering an effective approach for the thorough evaluation of TCMs.
研究领域:
药理学
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中药学
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分析化学
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质量控制
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生物统计学
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产品关联
DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2023
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IF 4.6
Qianyu Wei,Shuman Feng,Lili Wu
Chronic kidney disease caused by functional impairment of glomerular endothelial cells (GECs) is one of the etiologies of hemodialysis treatment. As a critical component of the hemodialysis process, hemodialysis membranes having been suffering from intricated modification methods. In order to solve a series of problems caused by blood incompatibility, usually triggered by rough surfaces, an anticoagulant coating with a similar physical structure and physiological properties to GECs was prepared on the polyethersulfone (PES) membrane. The smooth glomerular endothelium-like coating was obtained by a hydrated layer formed by tannic acid (TA) and α-lipoic acid (α-LA). We explored two possible reaction mechanisms of TA and α-LA, which were characterized and discussed by ATR-FTIR and XPS. Besides, the hydrophilic and negatively charged coating has filtration and anticoagulant properties similar to those of GECs. The results show that the modified membranes have appreciable hydrophilicity (the water contact angle is 29.7°) as well as high urea removal rate (96.5%) and BSA protein retention (99.7%). In addition, the modified membranes show favorable hemocompatibility and free radical scavenging ability. The reduction of platelet adhesion number is reduced by 98.7% and PRT is prolonged to 297 s. DPPH and ABTS radical scavenging capacity reach 1.18 and 0.89 μmol/cm 2 , respectively. In this work, a surface coating mimicking GECs was fabricated for the potential candidates of new hemodialysis membranes, which will significantly enhance the dialysis efficiency and alleviate the coagulation.
研究领域:
生物医学工程
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材料科学
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肾病学
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DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2020
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IF 4.006
Xianrui Liang,Yan Jiang,Zili Guo,Sheng Fang
Trapa quadrispinosa , commonly known as water caltrop, has long been consumed as a food in Asian countries and its pericarp is discarded as waste after the fruit is harvested. In this study, a reliable method was established using UPLC-QTOF-MS/MS to identify the main compounds in Trapa quadrispinosa pericarps (TQP). The UPLC parameters including column, mobile phase, and temperature were optimized. The extraction parameters including solvents, temperatures and solid-to-liquid ratios were also optimized. A total of 35 compounds were tentatively assigned. The QTOF-MS/MS fragmentation pathways of these compounds were proposed. The most abundant compound (1,2,3,6-tetra-O-galloyl- β - d -glucose) was further purified by a semi-preparative HPLC and confirmed by 1 H- and 13 C-NMR. Hydrolyzable tannins (gallotannins and ellagitannins) consisting of almost 90% polyphenols were obtained from the TQP extracts. Three of the main hydrolyzable tannins were 1,2,3,6-tetra-O-galloyl- β - d -glucose, tri-O-galloyl-hexahydroxydiphenoyl- d -glucose, and tri-O-galloyl- d -glucose. The TQP extracts exhibited better antioxidant activity in the DPPH assay than that of the ascorbic acid standard. This study provides valuable information for the utilization of TQP as an alternative source of plant-derived antioxidants.
研究领域:
分析化学
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植物化学
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食品科学
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药理学
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产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
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2015
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IF 4.169
Xiaoxia Zhang,Zongtao Lin,Jinggui Fang,Meixian Liu,Yanyan Niu,Shizhong Chen,Hong Wang
An on-line high-performance liquid chromatography−diode-array detector−electrospray ionization−ion-trap−time-of-flight−mass spectrometry−total antioxidant capacity detection (HPLC−DAD−ESI−IT−TOF−MS−TACD) system was created for identification and evaluation of antioxidants in Prunus ( P. ) mume flowers. Applying this system, the HPLC fingerprint, ultraviolet (UV) spectra, mass fragmentations, active profiles against 1,1-diphenylpicryl-2-hydrazyl radical (DPPH•) scavenging activity and ferric reducing antioxidant power (FRAP) of each complex sample were obtained simultaneously after one injection. Synchronous structure identification and activities screening of complex samples were thus accomplished. In this study, 78 compounds were identified from P. mume flowers by their chromatographic behaviors, UV spectra and MS data with the assistance of standard compounds and literature reports. The DPPH and FRAP activity of 24 samples (23 different P. mume varieties and 1 related herbal medicine) were then quantified by their detailed activity profiles from the on-line system, and by the total activity of each sample extract from off-line 96-well plate method. As a result, 21 and 32 compounds in the on-line system showed anti-oxidative effects against DPPH and FRAP, respectively. The established on-line system is efficient, sensitive and reliable to tell the DPPH and FRAP antioxidant activities of individual compound in complex samples, and therefore would be a useful and promising technique for antioxidant screening from different food and medicinal matrices.
研究领域:
植物化学
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分析化学
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食品科学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）