نتایج جستجو برای: total flavonol
تعداد نتایج: 801088 فیلتر نتایج به سال:
A new acylated flavonol glycoside was isolated from the leaves of Eriobotrya japonica along with two known flavonol glycosides. Their structures were determined by extensive spectroscopic investigation.
Deep supercooling xylem parenchyma cells (XPCs) in Katsura tree contain flavonol glycosides with high supercooling-facilitating capability in solutions containing the ice nucleation bacterium (INB) Erwinia ananas, which is thought to have an important role in deep supercooling of XPCs. The present study, in order to further clarify the roles of these flavonol glycosides in deep supercooling of ...
-In the flavonol biosynthetic pathway of Petunia 'Mitchell', polyploidy has a differential effect increasing the relative concentration of the major metabolite quercetin-3-sophoroside and decreasing the relative concentration of the minor metabolite quercetin-3,7-diglucoside. It has no effect on the total concentration or on the concentration of the other four minor flavonols.
from the aerial parts of tanacetum balsamita l. (compositae) a flavonol aglycon was isolated using chromatographic techniques. the structure of this compound was determined using spectroscopic methods (uv, h-nmr and ms) as 3',4',5,7-tetrahydroxy flavonol (quercetin).
Herba epimedii (Epimedium), a traditional Chinese medicine, has been widely used as a kidney tonic and antirheumatic medicine for thousands of years. In Epimedium, flavonoids have been demonstrated to be the main bioactive components (BCs). However, the molecular biosynthetic and regulatory mechanisms of flavonoid-derived BCs remain obscure. In this study, we isolated 12 structural genes and tw...
From the aerial parts of Tanacetum balsamita L. (Compositae) a flavonol aglycon was isolated using chromatographic techniques. The structure of this compound was determined using spectroscopic methods (UV, H-NMR and MS) as 3',4',5,7-Tetrahydroxy flavonol (Quercetin).
In view of alleged antidiabetic potential, effect of methanolic extract of Ficus carica L. (Moraceae) stem bark on fasting blood sugar levels and serum biochemical analysis in streptozotocin-induced diabetic rats were investigated. The resulted extract had shown significant protection and lowered the blood glucose levels to normal in glucose tolerance test. In long term treatment of streptozoto...
Anthocyanins, flavan-3-ols, and flavonols are the three major classes of flavonoid compounds found in grape berry tissues. Several viticultural practices increase flavonoid content in the fruit, but the underlying genetic mechanisms responsible for these changes have not been completely deciphered. The impact of post-veraison sunlight exposure on anthocyanin and flavonol accumulation in grape b...
This study examines the relationship between long-term intake of six flavonoid classes and incidence of CVD and CHD, using a comprehensive flavonoid database and repeated measures of intake, while accounting for possible confounding by components of a healthy dietary pattern. Flavonoid intakes were assessed using a FFQ among the Framingham Offspring Cohort at baseline and three times during fol...
Several epidemiological studies have linked flavonols with decreased risk of cardiovascular disease (CVD). However, some heterogeneity in the individual physiological responses to the consumption of these compounds has been identified. This meta-analysis aimed to study the effect of flavonol supplementation on biomarkers of CVD risk such as, blood lipids, blood pressure an...
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