Results 11 to 20 of about 27,133 (167)

Conversion of Flavonols into Anthocyanidins [PDF]

Nature, 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
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Dietary flavonols and flavonol‐rich foods intake and the risk of breast cancer [PDF]

International Journal of Cancer, 2004
AbstractLaboratory and animal studies suggest that dietary flavonols may reduce breast cancer risk but there are limited epidemiological studies. We computed flavonol intakes from dietary data collected by validated food frequency questionnaires in 1991 and 1995 from 90,630 women in the Nurses Health Study II. Using multivariate relative risks (RR) and
Adebamowo, C.A., Sampson, L., Katan, M.B., Spiegelman, D., Willett, W.C., Holmes, M.D., Cho, E.   +6 more
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Myricetin: a Multifunctional Flavonol in Biomedicine [PDF]

Current Pharmacology Reports, 2022
The root cause of many diseases like CVD, cancer, and aging is free radicals which exert their effect by interfering with different metabolic pathways. The sources of free radicals can be exogenous, like UV rays from sunlight, and endogenous due to different metabolic by-products.In our body, there are defense mechanisms present, such as antioxidant ...
Gopikrishna Agraharam, Agnishwar Girigoswami, Koyeli Girigoswami   +2 more
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Mass Spectrometric Fingerprint Mapping Reveals Species-Specific Differences in Plant Polyphenols and Related Bioactivities

Molecules, 2023
Plant species show large variation in the composition and content of their tannins and other polyphenols. These large metabolites are not easy to measure accurately, but they are important factors for species bioactivity and chemotaxonomy.
Suvi Vanhakylä, Juha-Pekka Salminen
doaj   +1 more source

The Phenolic Composition, Antioxidant Activity and Microflora of Wild Elderberry in Asturias (Northern Spain): An Untapped Resource of Great Interest

Antioxidants, 2023
The objective of this study is the characterization of the phenolic profile and antioxidant activity of elderberries (Sambucus nigra L.) from a collection of 79 wild specimens in northern Spain to assess variations in the species at the local level and ...
Roberto Rodríguez Madrera, Rosa Pando Bedriñana   +1 more
doaj   +1 more source

ALA-induced flavonols accumulation in guard cells is involved in scavenging H2O2 and inhibiting stomatal closure in Arabidopsis cotyledons

Frontiers in Plant Science, 2016
5-aminolevulinic acid (ALA), a new plant growth regulator, can inhibit stomatal closure by reducing H2O2 accumulation in guard cells. Flavonols are a main kind of flavonoids and have been proposed as H2O2 scavengers in guard cells.
Yuyan An, Xinxin Feng, Longbo Liu, Lijun Xiong, Liangju Wang   +4 more
doaj   +1 more source

Quantitative Analysis of Bioactive Compounds in Commercial Teas: Profiling Catechin Alkaloids, Phenolic Acids, and Flavonols Using Targeted Statistical Approaches

Foods, 2023
Tea, an extensively consumed and globally popular beverage, has diverse chemical compositions that ascertain its quality and categorization. In this investigation, we formulated an analytical and quantification approach employing reversed-phase ultra ...
Yuan Chen, Lingling Lai, Youli You, Ruizhen Gao, Jiaxin Xiang, Guojun Wang, Wenquan Yu   +6 more
doaj   +1 more source

Polyphenol Profile of Cistus × incanus L. and Its Relevance to Antioxidant Effect and α-Glucosidase Inhibition

Antioxidants, 2023
The European Food Safety Authority recommends C. incanus as a natural source of antioxidants. Its activity is essentially determined by polyphenols, although specific compounds are not finally indicated.
Aneta Starzec, Maciej Włodarczyk, Dominika Kunachowicz, Andrzej Dryś, Marta Kepinska, Izabela Fecka   +5 more
doaj   +1 more source

Extraction of Kaempferol and Its Glycosides Using Supercritical Fluids from Plant Sources: A Review

Food Technology and Biotechnology, 2018
Research has focused on the study and design of new products containing phytochemicals (polyphenolic acids, flavonoids and anthocyanins, among others) that contribute to a better life quality for consumers, as well as techniques to improve the extraction
Sandro Cid-Ortega, José Alberto Monroy-Rivera   +1 more
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Functional Properties and Antioxidant Activity of Morus alba L. Leaves var. Zolwinska Wielkolistna (WML-P)—The Effect of Controlled Conditioning Process

Antioxidants, 2020
This study evaluated the effect of adding a new step, termed conditioning, to the traditional processing of leaves from Morus alba var. zolwinska wielkolistna grown in Poland (WML-P).
Monika Przeor, Ewa Flaczyk, Dominik Kmiecik, Maciej S. Buchowski, Halina Staniek, Aneta Tomczak-Graczyk, Joanna Kobus-Cisowska, Anna Gramza-Michałowska, Joanna Foksowicz-Flaczyk   +8 more
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