Six phenolics were obtained from the leaves of Prunus padus by activity-guided isolation: isorhamnetin 3-O-β-xylopyranosyl-(1 → 2)-β-galactopyranoside (1), astragalin (2), hyperoside (3), quercetin 3-O-β-xylopyranosyl-(1 → 2)-β-galactopyranoside (4), quercetin 3-O-β-xylopyranosyl-(1 → 2)-β-glucopyranoside (5) and chlorogenic acid (6). The antioxidant potential of 70% methanolic extracts from the flowers
Biotechnology and bioengineering, 110(9), 2525-2535 (2013-04-10)
We report the production of astragalin (AST) from regiospecific modifications of naringenin (NRN) in Escherichia coli BL21(DE3). The exogenously supplied NRN was converted into dihydrokaempferol (DHK) and then kaempferol (KMF) in the presence of flavanone-3-hydroxylase (f3h) and flavonone synthase (fls1)
Archives of pharmacal research, 34(12), 2101-2107 (2012-01-03)
Astragalin (kaempferol-3-O-glucoside), a newly found flavonoid from leaves of persimmon or Rosa agrestis, is known to have antiatopic dermatitis and antioxidant activity. However, the effect of astragalin on the inflammatory response is not well defined. Nitric oxide (NO) produced from
From the methanolic extract of the roots of Clerodendrum philipinum, a new rearranged abietane diterpene (1) and eight known compounds were isolated by various chromatography methods. Their structures were identified by means of spectroscopic methods, including 1D- and 2D-NMR, as
Journal of the science of food and agriculture, 93(2), 362-367 (2012-07-11)
The application of tea seed extract (TSE) has been widely investigated owing to its biological activities. In this paper, two flavonol triglycosides found in TSE, camelliaside A (CamA) and camelliaside B (CamB), were subjected to hydrolysis in the presence of
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