Results 101 to 110 of about 135,838 (246)

Preparation, Component Identification, and Antioxidant Activity of Anthocyanins From Punica granatum “Tunisia”

AgriFood: Journal of Agricultural Products for Food, EarlyView.
The preparation for Tunisian pomegranate anthocyanin extract. The molecular mechanisms underlying the antioxidant effects of these compounds were investigated using network pharmacology and molecular docking. Antioxidant activity was evaluated through DPPH, ABTS, and FRAP assays, whereas the effects on oxidative stress and inflammation were examined in
Jing Zhang, Xu‐han Yang, Meng‐qi Zhang, Xu Guo, Ning‐yang Li, Fang‐yu Long, Chao Liu   +6 more
wiley   +1 more source

Rapid Estimation of Tocopherol Content in Linseed and Sunflower Oils-Reactivity and Assay

Molecules, 2015
The reactivity of tocopherols with 2,2-diphenyl-1-picrylhydrazyl (DPPH) was studied in model systems in order to establish a method for quantifying vitamin E in plant oils. The method was optimized with respect to solvent composition of the assay medium,
Tjaša Prevc, Alenka Levart, Irena Kralj Cigić, Janez Salobir, Nataša Poklar Ulrih, Blaž Cigić   +5 more
doaj   +1 more source

Biobased Polyurethane Films Based on Andiroba (Carapa guianensis) and Buriti (Mauritia flexuosa) Oil Polyols

Journal of Applied Polymer Science, EarlyView.
Polyurethane films were prepared from andiroba (Carapa guianensis) and buriti (Mauritia flexuosa) oil‐derived polyols, emphasizing their potential as bio‐based materials. UV–Vis analysis indicates the retention of carotenoid‐related chromophoric features within the polymer matrix.
João A. P. da Silva, Amanda L. Ferreira, Felipe F. C. Tavares, Chana M. da Silva, Cesar L. Petzhold, Nilo S. M. Cardozo   +5 more
wiley   +1 more source

Optimization of microwave-assisted polyphenol extraction and antioxidant activity from papaya peel using response surface methodology and artificial neural network

Applied Food Research
The objective of the present study is to determine the optimal conditions of microwave-assisted extraction (MAE) such as microwave power (MWP), irradiation time (I-time), ethanol concentration (EtOH%), and solvent-to-solid ratio (S/S) for maximizing ...
Md. Waziur Rahman Chy, Tanvir Ahmed, Junaid Iftekhar, Md. Zohurul Islam, Md. Rahmatuzzaman Rana   +4 more
doaj   +1 more source

Advances in Chitosan Nanoparticles: A Comprehensive Review of Properties, Synthesis, Characterization, Multidisciplinary Applications, and Future Perspectives

Journal of Applied Polymer Science, EarlyView.
This review highlights the synthesis of chitosan nanoparticles from natural sources, the thorough characterization of them, and use of microscopic and spectroscopic methods. It emphasizes that it has some indispensable properties such as being non‐toxic, antimicrobial, and capable of controlled drug release.
Mariam Sohail Mansoor, Nayab Raza, Furqana Bibi, Madiha Mumtaz, Asif Abbas, Farasat Haider, Basit Ali   +6 more
wiley   +1 more source

Kinetics of the Oxidation of Quercetin by 2,2-Diphenyl-1-picrylhydrazyl (dpph^•)

, 2016
In methanol/water, dpph• bleaching (519 nm) by quercetin, QH2, exhibits biphasic kinetics. The dpph• reacts completely with the quercetin anion within 100 ms. Subsequent slower bleaching involves solvent and QH2 addition to quinoid products.
Carmelo Daquino (2168854), Mario C. Foti (2168851), K. U. Ingold (1676536), Gino A. DiLabio (1274490)   +3 more
core   +1 more source

Effects of Cellulase and Lactobacillus plantarum Supplementation on Fermentation Characteristics, In Situ Degradability, and Microbial Community Dynamics of Apple Pomace Silage

Animal Research and One Health, EarlyView.
This study aimed to investigate the effects of cellulase and Lactobacillus plantarum on the silage quality, in situ digestibility, and microbial communities of apple pomace silage. The combined supplementation of cellulase and Lactobacillus plantarum in apple pomace silage improved fermentation quality and enhanced rumen utilization efficiency.
Zhuangzhuang Liu, Xiongfei Zhang, Fengbo Sun, Junhu Yao, Xinjian Lei   +4 more
wiley   +1 more source

Determination of Antioxidant Activity by DPPH in Non-traditional Cereals

, 2013
Diplomová práce obsahuje charakteristiku obilovin, antioxidační aktivity a antioxidantů, definování jednotlivých metod sloužících ke stanovení antioxidační aktivity se zaměřením na metodu DPPH.
Jančová, Veronika
core  

DPPH Scavenging Activities and Phytochemical Content of Four Asteraceae Plants

, 2017
Free radicals are atoms or molecules that have one or more unpaired electrons on its outer orbital, highly reactive, and could damage cell inside human body.
Irda Fidrianny, Komar Ruslan Wirasutisna, Raden Bayu Indradi   +2 more
core   +1 more source

Comprehensive Characterization of Acer truncatum Leaf Extract: Identification of Systemic Metabolites and Effects on Performance, Antioxidant Status, and Intestinal Microbiota in Laying Hens

Animal Research and One Health, EarlyView.
Dietary A. truncatum leaf extract is absorbed and improves laying performance in aged hens by enhancing systemic antioxidant capacity and modulating the gut microbiota. ABSTRACT The demand for natural feed additives is considerably increasing in the antibiotic‐free feed era.
Kailong Qin, Jiantao Yang, Minglu Gao, Xiaozhao Tao, Xin Yang, Yanli Liu, Xiaojun Yang   +6 more
wiley   +1 more source