[Quercetin-3-glucuronide, main flavonoid of Alchemilla, Alchemilla xanthochlora Rothm. (Rosaceae)].
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Biomedical subjects
Publications and source records attributed to A Carnat.
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From 42 Rosaceae species, only the Rosoideae species exhibit high tannin content and elastase inhibiting activity such as Filipendula ulmaria, Geum montanum, G. rivale, Alchemilla xanthochlora and Sanguisorba minor. Other studied species from Spiraeoideae, Maloideae and Prunoideae subfamilies are less rich in tannin and also less active.
A number of medicinal species of the Apiaceae, Borraginaceae and Lamiaceae families present high rosmarinic acid and total hydroxycinnamic derivative contents. Species of genera Sanicula (Apiaceae), Lycopus, Melissa, Mentha, Origanum and Salvia (Lamiaceae) contain rosmarinic acid in large amount, more than 3%, based on dry weight. The antioxidant activity of hydroalcoholic extracts, on DPPH, is partly in relation with the hydroxycinnamic derivative content.
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