flavonol


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flavonol

[′fla·və‚nȯl]
(biochemistry)
Any of a class of flavonoid compounds that are hydroxy derivatives of flavone.
C16H10O2 A colorless, crystalline compound from which many yellow plant pigments are derived.
References in periodicals archive ?
Quercetin (3, 3', 4', 5, 7-pentahydroxyflavone) is the most studied and important flavonol, which has powerful antioxidant properties, protects low-density lipoprotein from oxidation in vitro (23).
Characterization of flower coloration in 30 Rhododendrons pecies via anthocyanin and flavonol identification and quantitative traits.
The organic onions also had up to 20% higher flavonol content than the conventional crop.
Kalibrate was developed as a full-season liquid potassium source, complimented by AgroLiquid's Flavonol Polymer Technology With a 2-0-10-6S analysis, a gallon of Kalibrate can provide the same amount of usable [K.sub.2]O as 10-13 units of potash in a grower's fertility program.
In this study, 6 phenolic acid compounds, 4 flavonol compounds, and 1 isoflavone were evaluated in different organs and at different developmental stages of Sophorae Radix (Sophora flavescens Aiton).
The flavonol quercetin gave positive results in all our experiments, and this is in accordance with various reports on the induction of redox-sensitive transcription factors [16,29, 30].
Favorable prospects regarding biological activities are suggested by the high content of flavonols and chalcones and the expressive antioxidant activity of the RN "mandaguari" geopropolis.
Keywords: Flavonol, Algar-Flynn-Oyamada reaction, 2-hydroxy chalcones, Microwave-assisted protocol, Biological activities.
Flavonol content was higher in uninoculated red fruits of susceptible variety (1.50 mg/g fresh weight) as compared to resistant (1.37 mg/g fresh weight).
However, participants in the highest quintiles of flavonol and flavanone intakes had modestly lower risk of ovarian cancer than that of participants in the lowest quintile, although the P-trend was not significant [HRs: 0.76 (95% CI: 0.59, 0.98; P-trend = 0.11) and 0.79 (95% CI: 0.63,1.00; P-trend = 0.26), respectively].