An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
2,2-diphenyl-1-picrylhydrazyl; antioxidant activity; energy; health promotion; hydroxyl radicals; lipids; oryzanol; principal component analysis; rice; whole grain foods
Abstract:
... Steryl ferulates (SFs) are a subclass of bioactive lipids contributing to the health-promoting effects of whole grains. Most related studies focus on γ-oryzanol, a SF mixture from rice, since individual steryl ferulates are not commercially available. There is little evidence that individual SFs may vary in their bioactivity. The aim of this study was to evaluate the antioxidant activity of eight ...
DNA damage; antioxidant activity; copper; emulsions; esterification; esters; functional foods; ground meat; health promotion; hydrogen peroxide; hydroxyl radicals; ingredients; low density lipoprotein; oils; organochlorine compounds; oxidation; resveratrol; risk reduction
Abstract:
... Resveratrol (R) was lipophilized by esterification in order to facilitate its application in a wide range of products and to possibly enhance its bioactivity. Twelve resveratrol derivatives were prepared using acyl chlorides of different chain length (C3:0–C22:6) and their antioxidant activities assessed. While resveratrol showed the highest antioxidant activity in oil-in-water emulsion, its deriv ...
2,2-diphenyl-1-picrylhydrazyl; chelation; flour; free radical scavengers; health promotion; hydrolysates; hydrolysis; hydroxyl radicals; ingredients; inhibitory concentration 50; molecular weight; pH; peptides; peptidyl-dipeptidase A; protein hydrolysates; spectrometers; subtilisin; temperature
Abstract:
... Date seed flour was used to produce protein hydrolysates using Alcalase (AL), Flavourzyme (FL) and Thermolysin (TH). Enzymes were used individually or in combination at a constant pH and temperature. The degree of hydrolysis ranged between 11 and 14%. The molecular weights of peptides determined, using a quadrupole orthogonal time-of-flight hybrid tandem mass spectrometer, ranged from 2062.9 ± 0.0 ...
... Phenolic extracts from seven millet varieties (kodo, finger (Ravi), finger (local) proso, foxtail, little and pearl) were evaluated for their total phenolic content (TPC), total flavonoid content (TFC), ferrous ion chelating activity and singlet oxygen scavenging capacity. Furthermore, the potency of millet phenolic extracts in the inhibition of peroxyl and hydroxyl radical induced supercoiled DNA ...
... Lemon (Citrus limon (L.) Burm. f.) juice beverages enriched either with noni (Morinda citrifolia L.) (LN) or papaya (Carica papaya L.) (LP), were characterized by HPLC-DAD-ESI/MSn, the antioxidant capacity was evaluated by (DPPH), superoxide (O2−), hydroxyl radicals (OH) and hypochlorous acid (HOCl) assays, and their potential as acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) inhibi ...
... Leaves and cones of the genus Juniperus, regularly used as a spice, could be a candidate for new food preservative with significant nutraceutical qualities. The main goal of this study was to evaluate the bioactivity and chemical profiling of the Juniperus excelsa leaves and cones in order to support its usage as a health-promoting food additive. The content of 44 phenolics was determined using Li ...
... This research sought to characterize the essential oils of Satureja thymbra and Thymbra spicata var. spicata in terms of composition as well as their antioxidant and enzyme‐inhibitory activities. The major components of essential oil derived from S. thymbra were found to be γ‐terpinene (34.67%), carvacrol (32.45%), p‐cymene (11.46%), and β‐caryophyllene (6.85%). In the essential oil derived from T ...
... Antioxidant phenolic compounds (PCs) are gaining popularity day by day for their health promoting properties. Wheat is a very good source of natural antioxidant PCs. In the present study, extraction of PCs was improved by solid-state fermentation (SSF) of wheat by Rhizopus oryzae RCK2012 which helped to release the bound compounds from matrix. Different extraction conditions such as solvent compos ...
2,2-diphenyl-1-picrylhydrazyl; DNA damage; Rhizopus microsporus var. oligosporus; antioxidant activity; bioavailability; ethanol; functional foods; glucosides; health promotion; hydroxyl radicals; ingredients; isoflavones; nanosilver; risk reduction; silver; solid state fermentation; solvents; soybeans
Abstract:
... In this study, Rhizopus oligosporus RT-3, which was first isolated in our group, was used for solid state fermentation of soybeans (R. oligosporus-fermented soybeans, RFS) in a short time (22 h). The effects of fermentation on total phenolic content (TPC), isoflavone composition, antioxidant activity and DNA damage protection of soybeans were investigated. Besides, the effects of different polarit ...
... This study was aimed to evaluate the antidiabetic, dermatoprotective, neuroprotective and antioxidant activities of n-butanol extracts from leaves and flowers of Chrysanthemum fontanesii. β-carotene-linoleic acid, Galvinoxyl radical (GOR), ABTS, hydroxyl radical, reducing power, CUPRAC, O-phenanthroline and metal chelating assays were used to evaluate antioxidant capacity of the extracts. The extr ...
... Fenugreek and spinach leaves after irradiation in the dose range of 0.25–1.5kGy were evaluated for the content of bioactive compounds and antioxidant activity using DPPH radical scavenging, ferric reducing ability power (FRAP), hydroxyl radical scavenging and ferrous ion chelating assays. Results of the study revealed that bioactive content except total ascorbic acid was significantly (p≤0.05) hig ...
... In this study, we analyzed Chinese traditional fermented food to isolate and identify new lactic acid bacteria (LAB) strains with novel functional properties and to evaluate their cellular antioxidant and bile salt hydrolase (BSH) activities in vitro. A sequential screening strategy was developed to efficiently isolate and obtain 261 LAB strains tolerant of bile salt, acid, and H2O2 from nine Chin ...
... Bioactive antioxidant peptides are more and more attracting the attention of food manufacturers for their potential to transform food in functional food, able to prevent a variety of chronic diseases associated with oxidative stress. In the present study proteins extracted from different vegetable sources (KAMUT® khorasan wheat, emmer, lupine and pea) were hydrolyzed with commercial enzymes and La ...
... This study aimed to evaluate the effect of exopolysaccharide (EPS)-producing Lactobacillus plantarum JLK0142 on the ripening characteristics and in vitro health-promoting benefits of low-fat Cheddar cheese. Three batches of cheese were made by employing a non-EPS–producing cheese starter (control), in combination with Lb. plantarum JLK0142 as an adjunct and the purified EPS as an ingredient. Lacto ...
... Methanolic extracts from the seed coats of five major tamarinds (Srichomphu, Sithong-nak, Sithong-bao, Priao-yak and Khanti) cultivated in Thailand were investigated for their content of phenolic compounds and their antioxidative properties. Antioxidative properties were evaluated by various different methods: scavenging effect on the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and hydroxyl radical, anti ...
Naif Abdullah Al-Dhabi; Mariadhas Valan Arasu; Ponnuswamy Vijayaraghavan; Galal Ali Esmail; Veeramuthu Duraipandiyan; Young Ock Kim; Hyungsuk Kim; Hak-Jae Kim
... In recent years, studies have focused on the therapeutic properties of probiotics to eliminate pathogenic microorganisms associated with various diseases. Lactobacilli are important probiotics groups that have been found to possess many health-promoting activities. This study was carried out to isolate LactobacillusreuteriLR12 and L. lactisLL10 from pineapple puree. The invitro analysis to evaluat ...
... Six lactic acid bacterial (LAB) strains were isolated from traditionally fermented Xinjiang cheese and evaluated for functional and probiotic properties and potentials as starter cultures. The isolated six LAB strains comprised Lactobacillus rhamnosus (one strain), Lactobacillus helveticus (one strain), and Enterococcus hirae (four strains). All of the six strains were tolerant to acidic and bile ...
... During the past two decades probiotic bacteria have been increasingly proposed as health promoting bacteria in variety of food system, because of its safety, functional, and technological characteristics. Commonly, Lactobacillus spp., Bifidobacterium spp., Saccharomyces boulardii, and some other microorganisms have been considered as probiotic strains. Possibly these bacterial strains exerted seve ...
... BACKGROUND AND AIMS: Stilbenes are an important group of phenolic substances that exist in roots, stems, leaves, skins and seeds. But little work has been performed to characterise the composition of grape root or to measure the antioxidant capacity of several stilbenes with hydroxyl radicals,1,1‐diphenyl‐2‐picrylhydrazyl and nitric oxide free radicals. METHODS AND RESULTS: Stilbenes were analysed ...