کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10541813 963435 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
α-Glucosidase inhibitors from Chinese Yam (Dioscoreaopposita Thunb.)
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
α-Glucosidase inhibitors from Chinese Yam (Dioscoreaopposita Thunb.)
چکیده انگلیسی
The inhibitory activities of crude extracts and purified constituents from the fresh tuberous rhizomes of Chinese Yam (Dioscorea opposita Thunb.), which is commonly called Huai Shan Yao in Chinese, were evaluated against yeast α-glucosidase in order to search for the active principals for treatment of diabetes. Bioassay-guiding isolation gave four compounds: trans-N-p-coumaroyltyramine (1) (IC50 = 0.40 μM), 1,7-bis(4-hydroxyphenyl)heptane-3,5-diol (2) (IC50 = 0.38 mM), 6-hydroxy-2,4,7-trimethoxyphenanthrene (3) (IC50 = 0.77 mM) as α-glucosidase inhibitors, and cis-N-p-coumaroyltyramine (4), an isomer of compound 1, which showed no inhibitory activity against α-glucosidase. Furthermore, the separation and purification of compound 3 from Chinese Yam (Huai Shan Yao) was conducted by high-speed counter-current chromatography (HSCCC) using hexane-ethyl acetate-methanol-water (1:1:1:1, v/v/v/v). Compound 1, 2 and 4 were isolated from or detected in the Dioscoreaceae family for the first time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 126, Issue 1, 1 May 2011, Pages 203-206
نویسندگان
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