چاپ صفحه |  صفحه نخست سامانه |  چکیده مقاله |  نویسندگان |  دانلود مقاله | دانشگاه علوم پزشکی تبریز |
| The reversed-phase preparative high performance liquid chromatographic purification of the methanol extract of the fruits of Ribes biebersteinii Berl. (Grossulariaceae) afforded five cyanidin glycosides, 3-O-sambubiosyl-5-O-glucosyl cyanidin (1), cyanidin 3-O-sambubioside (2), cyanidin 3-O-glucoside (3), cyanidin 3-O-(2G-xylosyl)-rutinoside (4) and cyanidin 3-O-rutinoside (5). They showed considerable free-radical-scavenging properties in the 2,2-diphenyl- 1-picrylhydrazyl (DPPH) assay with the RC50 values of 9.29 ´ 10–6, 9.33 ´ 10–6, 8.31 ´ 10–6, 8.96 ´ 10–6 and 9.55 ´ 10–6 mol L–1, respectively. The structures of these compounds were elucidated by various chemical hydrolyses and spectroscopic means. The total anthocyanin content was 1.9 g per 100 g dried fruits on cyanidin 3-glucoside basis. |
| نویسنده | نفر چندم مقاله |
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| عباس دل آذر | اول |
| لاله خدائی | دوم |
| نام فایل | تاریخ درج فایل | اندازه فایل | دانلود |
|---|---|---|---|
| Ribes bieberstinii...2010.pdf | 1398/07/24 | 93832 | دانلود |
