Study on the chemical constituents and antioxidant activity of Hibiscus sabdariffa L. calyx
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In this study, four flavonoids, including tiliroside, quercetin-3-O-(6-O-(E)-p-coumaryl-β-D-glucopyranoside, isoquercetin, and quercetin were isolated from the calyx of H. sabdariffa collected in Bac Giang province, Viet Nam. In addition, the methanol extract of the H. sabdariffa calyx showed the ability to scavenge DPPH free radicals with SC50 values ranging from 103.61-119.16 µg/ml, in comparison with that of the positive control, ascorbic acid (SC50 = 10.75 µg/ml).
Nội dung trích xuất từ tài liệu:
Study on the chemical constituents and antioxidant activity of Hibiscus sabdariffa L. calyx
Nội dung trích xuất từ tài liệu:
Study on the chemical constituents and antioxidant activity of Hibiscus sabdariffa L. calyx
Tìm kiếm theo từ khóa liên quan:
Hibiscus sabdariffa Chemical constituents Antioxidant activity Hibiscus sabdariffa L calyx Scavenge DPPH free radicalsTài liệu liên quan:
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