Results 21 to 30 of about 94,529 (359)

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

Analysis of benzoic and cinnamic acid derivatives of some medicinal plants in Serbia [PDF]

open access: yesArchives of Biological Sciences, 2013
Natural phenolics, which are ubiquitously distributed in plants, have been reported as functional factors in phytotherapy. We have examined phenolic compounds in the leaves and inflorescences of five significant medicinal plants of different plant ...
Đurđević L.   +5 more
doaj   +1 more source

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

Developmental stage is an important factor that determines the antioxidant responses of young and old grapevine leaves under UV irradiation in a green-house. [PDF]

open access: yes, 2011
The impact of UV irradiation was studied on photosynthesis, photosystem II photochemical yields and antioxidant responses using green-house grown grapevine (Vitis vinifera L. cv. Chardonnay) leaves.
Hideg, Éva, Majer, Petra
core   +1 more source

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

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

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

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

Nutritional and Defensive Chemistry of Three North American Ash Species: Possible Roles in Host Performance and Preference by Emerald Ash Borer Adults [PDF]

open access: yes, 2018
Black ash (Fraxinus nigra), green ash (F. pennsylvanica), and white ash (F. americana) are the three most abundant ash species in the northeastern USA.
Chen, Yigen, Poland, Therese M
core   +3 more sources

Phenolic Acid Composition and Antioxidant Activity of Whole and Defatted Seeds of Italian Hemp Cultivars: A Two-Year Case Study

open access: yesAgriculture, 2022
The study investigated the nutritional profile and nutraceutical composition of the seeds (whole and defatted) of two monoecious hemp cultivars (Carmaleonte, Codimono) and one dioecious cultivar (CS) grown during the 2018 and 2019 crop seasons.
Valeria Menga   +8 more
doaj   +1 more source

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