Results 21 to 30 of about 15,050 (206)

Conversion of Flavonols into Anthocyanidins [PDF]

open access: yesNature, 1950
QUALITATIVE experiments with a wide range of γ-pyrones show that they are reduced by lithium aluminium hydride to γ-pyranols, which afford pyrylium salts on treatment with acids.
R, MIRZA, R, ROBINSON
openaire   +2 more sources

Flavonoid intake in European adults (18 to 64 years). [PDF]

open access: yes, 2015
BACKGROUND: Flavonoids are a group of phenolic secondary plant metabolites that are ubiquitous in plant-based diets. Data from anthropological, observational and intervention studies have shown that many flavonoids are bioactive.
Khaw, Kay-Tee   +7 more
core   +14 more sources

Extraction of Anthocyanins and Total Phenolic Compounds from Acai (Euterpe oleracea Mart.) Using an Experimental Design Methodology. Part 2: Ultrasound-Assisted Extraction [PDF]

open access: yes, 2020
Two optimized methods for ultrasound-assisted extraction were evaluated for the extraction of two types of acai bioactive compounds: Total anthocyanins (TAs) and total phenolic compounds (TPCs).
Aliaño González, María José   +7 more
core   +1 more source

Flavonoid intake and the risk of age-related cataract in China’s Heilongjiang Province [PDF]

open access: yes, 2015
Background/Objectives: Epidemiological evidence suggests that diets rich in flavonoids may reduce the risk of developing age-related cataract (ARC).
Boots AW   +11 more
core   +2 more sources

Black Beans, Fiber, and Antioxidant Capacity Pilot Study: Examination of Whole Foods vs. Functional Components on Postprandial Metabolic, Oxidative Stress, and Inflammation in Adults with Metabolic Syndrome. [PDF]

open access: yes, 2015
Beans (Phaseolus vulgaris) contain bioactive components with functional properties that may modify cardiovascular risk. The aims of this pilot study were to evaluate the ability of black beans to attenuate postprandial metabolic, oxidative stress, and ...
Burton-Freeman, Britt M   +5 more
core   +13 more sources

Wine Polyphenol Content and Its Influence on Wine Quality and Properties: A Review

open access: yesMolecules, 2021
Wine is one of the most consumed beverages around the world. It is composed of alcohols, sugars, acids, minerals, proteins and other compounds, such as organic acids and volatile and phenolic compounds (also called polyphenols).
Rocío Gutiérrez-Escobar   +2 more
doaj   +1 more source

Functional Characterization of Flavanone 3-Hydroxylase (F3H) and Its Role in Anthocyanin and Flavonoid Biosynthesis in Mulberry

open access: yesMolecules, 2022
Mulberry (Morus spp., Moraceae) is an important economic crop plant and is rich in flavonoids and anthocyanidins in ripe fruits. Anthocyanins are glycosides of anthocyanidins.
Mingjie Dai   +7 more
doaj   +1 more source

Validation of a New HPLC-DAD Method to Quantify 3-Deoxyanthocyanidins Based on Carajurin in Medicinal Plants and for Chemical Ecology Studies

open access: yesPlants, 2023
Anthocyanidins are found in nature mainly as pelargonidin, cyanidin, peonidin, delphinidin, petunidin, and malvidin derivatives. These compounds are found free or as glycoside derivatives which are responsible for the color (red, blue, and violet) of ...
Paulo Victor R. Souza   +5 more
doaj   +1 more source

Studies of the biological and therapeutic effects of argentine stingless bee propolis [PDF]

open access: yes, 2018
Meliponids are native bees of the Americas, characterized by having no sting (ANSA). Some live in the Yunga forests of northern Argentina, a place rich in a diversity of this type of bees of which at least thirty-three species may be found. Propolis is a
Brodkiewicz, Ivana Yanina   +5 more
core   +1 more source

Are anthocyanidins the immediate products of anthocyanidin synthase?

open access: yesChemical Communications, 2000
Anthocyanidin synthase catalyses the in vitro conversion of its natural substrate, leucocyanidin, to cis- and trans-dihydroquercetin, quercetin and a small amount of cyanidin; incubation of trans-dihydroquercetin gave quercetin.
Turnbull, J   +6 more
openaire   +2 more sources

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