Results 21 to 30 of about 94,108 (310)

Identification of Key Antioxidants of Free, Esterified, and Bound Phenolics in Walnut Kernel and Skin

open access: yesFoods, 2023
Walnut is a natural source of antioxidants. Its antioxidant capacity is determined by the distribution and composition of phenolics. The key phenolic antioxidants in various forms (free, esterified, and bound) in walnut kernel (particularly seed skin ...
Shutian Wu   +5 more
doaj   +1 more source

Recovery of Polyphenols from Brewer’s Spent Grains [PDF]

open access: yes, 2019
peer-reviewedThe recovery of antioxidant polyphenols from light, dark and mix brewer’s spent grain (BSG) using conventional maceration, microwave and ultrasound assisted extraction was investigated.
Birsan, Rares   +3 more
core   +2 more sources

Phenolics extraction from sweet potato peels: modelling and optimization by response surface modelling and artificial neural network [PDF]

open access: yes, 2016
Sweet potato peels (SPP) are a major waste generated during root processing and currently have little commercial value. Phenolics with free radical scavenging activity from SPP may represent a possible added-value product for the food industry.
Anástacio, Ana   +2 more
core   +1 more source

Change in Nutritional Quality of Detached Aspen and Willow Foliage Used as Insect Food in the Laboratory [PDF]

open access: yes, 2017
Leaves of Populus tremuloides and Salix babylonica held in the laboratory as for feeding insects were analyzed for total nitrogen, total phenolics, and total sugars at 0, 3, and 6 days.
Miller, William E
core   +3 more sources

The bioavailability, health advantages, extraction method, and distribution of free and bound phenolics of rice, wheat, and maize: A review

open access: yesFood Chemistry Advances, 2023
One of the primary sources of human sustenance is cereal grains, and the production of these grains has expanded recently to meet the demands of the growing global population as a primary source of human food and health.
Ranabir Sahu   +7 more
doaj   +1 more source

Chemical Composition and in Vitro Evaluation of the Antioxidant and Antimicrobial Activities of Eucalyptus gillii Essential Oil and Extracts [PDF]

open access: yes, 2012
In this study, essential oil and various extracts (hexane, petroleum ether, acetone, ethanol, methanol and water) of Eucalyptus gilii were screened for their chemical composition, antimicrobial and antioxidant activities.
Ahmed Lebrihi   +20 more
core   +5 more sources

Free Phenolic Substances in Blood Plasma.

open access: yesExperimental Biology and Medicine, 1960
SummaryA detailed examination of the free estrone fraction of alumina column chromatograms of extracts of blood plasma has shown that when elution is performed with 0.25, 0.50 and then 1% ethanol in benzene instead of only using 1% ethanol in benzene, the free “estrone” fraction actually consisted of a substance slightly less polar than estrone.
J W, GREENE, J C, TOUCHSTONE
openaire   +2 more sources

Direct Transition-Metal-Free Intramolecular Arylation of Phenols [PDF]

open access: yesOrganic Letters, 2008
Direct transition-metal-free, base-mediated intramolecular arylation of phenols with aryl halides has been developed. In the presence of 2.5 equiv of t-BuOK in dioxane at 140 degrees C, the intramolecular cyclization of 3-(2-halobenzyloxy)phenols affords 6H-benzo[c]chromenes in high yields.
Gan B, Bajracharya, Olafs, Daugulis
openaire   +2 more sources

Elucidating the genetic basis of antioxidant status in lettuce (Lactuca sativa). [PDF]

open access: yes, 2015
A diet rich in phytonutrients from fruit and vegetables has been acknowledged to afford protection against a range of human diseases, but many of the most popular vegetables are low in phytonutrients. Wild relatives of crops may contain allelic variation
Biggi, Gaia F   +10 more
core   +1 more source

Phenolics and related in vitro functional activities of different varieties of fresh waxy corn: a whole grain

open access: yesBMC Chemistry, 2021
The polyphenol distribution in fresh waxy corns of different color varieties and their functional activities, which may be useful for treating various chronic diseases, were investigated.
Lirong Chen   +4 more
doaj   +1 more source

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