Results 101 to 110 of about 190,323 (294)

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

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

Block freeze-concentration of coffee extract: Effect of freezing and thawing stages on solute recovery and bioactive compounds [PDF]

, 2014
Coffee extract was freeze-concentrated using the total block technique. The effects of four parameters were evaluated: the initial coffee mass fraction (5 and 15% w/w), the cooling temperature ( 10 and 20 C), the heating temperature (20 and 40 C ...
Hernández Yáñez, Eduard, Moreno, F.L., Raventós Santamaria, Mercè, Ruiz, Y.   +3 more
core   +2 more sources

Grape Seed Polyphenols Enhance Antioxidant Activity and Prolong the Lifespan of Caenorhabditis elegans Through SKN‐1/Nrf2 Pathway

AgriFood: Journal of Agricultural Products for Food, EarlyView.
GSP extends C. elegans lifespan, enhances stress resistance and reproduction, boosts antioxidant defenses (↑SOD/CAT/GSH‐Px, ↓ROS), remodels glycolysis/TCA/one‐carbon metabolism dose‐dependently, and activates SKN‐1/Nrf2 and H3K4 methylation—linking redox control to epigenetic modulation.
Boya Ouyang, Quanyong Wu, Fei Liu, Jingyimei Liang, Wanning Ma, Yuxuan Zhao, Hui Cao, Jianbo Xiao   +7 more
wiley   +1 more source

Gastrointestinal endogenous proteins as a source of bioactive peptides : Doctor of Philosophy in Nutritional Sciences at Riddet Institute, Massey University, Palmerston North, New Zealand [PDF]

, 2016
Gastrointestinal endogenous proteins (GEP) were investigated as a source of bioactive peptides. In silico and in vitro methods were used singly or in combination to study GEP-derived peptides after simulated digestion.
Acharya, Prasannalakshmi
core  

Spatial characterization of the magnetic field profile of a probe tip used in magnetic resonance force microscopy

, 2008
We have developed the experimental approach to characterize spatial distribution of the magnetic field produced by cantilever tips used in magnetic resonance force microscopy (MRFM).
D. V. Pelekhov, E. A. Akhadov, E. Nazaretski, I. Martin, Jackson J. D., P. C. Hammel, R. Movshovich, Suter A.   +7 more
core   +1 more source

Growth, photosynthetic pigments, phenolic content and biological activities of Foeniculum vulgare Mill., Anethum graveolens L. and Pimpinella anisum L. (Apiaceae) in response to zinc [PDF]

, 2017
The effect of zinc (Zn) on phenols, antioxidant activities (free radicals' scavenging activities, inhibition of lipid peroxidation, chelating activity and reducing power), and enzyme inhibition activities of acetylcholinesterase, lipoxygenase and ...
Ben Kaab, Leila Bettaieb, Carlier, Jorge, Clara Costa, Maria, EL-GEUNDOUZ, Soukaina, MAJDOUB, Nesrine, Miguel, Maria Graca, Rezgui, Marwa   +6 more
core   +1 more source

Aloe vera–Based Green Synthesis of Silver Nanoparticles With Characterization, Potent Antibacterial and Antioxidant Properties

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Green synthesis has emerged as a suitable alternative to the traditional method for manufacturing nanoparticles (NPs) as it provides a safer, sustainable, healthy, and environmental path for the NPs synthesis. Silver nanoparticles (AgNPs) were prepared using a green method with locally sourced Aloe vera leaf extract.
Janaki Baral, Sushant Timalsina, Sujan Dhungana, Laxmi Tiwari, Devendra Khadka, Bhoj Raj Poudel   +5 more
wiley   +1 more source

AKTIVITAS ANTIOKSIDAN EKSTRAK GAMBIR YANG DIPURIFIKASI MENGGUNAKAN KROMATOGRAFI KOLOM SEPHADEX LH-20

Agritech, 2012
Antioxidant Activity of Purifi ed Gambir Extract Using Sephadex LH-20 Column Chromatography ABSTRAK Telah dilakukan ekstraksi terhadap gambir menggunakan tiga jenis pelarut [aquades:etanol (1:1), etanol:etil asetat (1:1), dan etil asetat], dilanjutkan ...
Rusdin Rauf, Umar Santoso, Suparmo Suparmo   +2 more
doaj   +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