کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10540293 | 963403 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Flavan-3-ol-cysteine and acetylcysteine conjugates from edible reagents and the stems of Cynomorium songaricum as potent antioxidants
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Flavan-3-ol derivatives, including 3 cysteine conjugates and 3 acetylcysteine conjugates, were prepared using Cynomorium songaricum and edible reagents. The structures were determined, based on NMR and MS spectra. All compounds had stronger radical-scavenging activity than catechin and epicatechin. Moreover, the cysteine conjugates were active against α-glucosidase, whereas catechin and epicatechin were not. Two acetylcysteine flavan-3-ol conjugates, 4β-(l-acetylcysteinyl)-epicatechin 3-O-gallate and 4β-(l-acetylcysteinyl)-epiafzelechin, are novel compounds with better log P values than their cysteine counterparts. These conjugates can be prepared from purified flavan-3-ol polymers or directly from herbal material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 141, Issue 3, 1 December 2013, Pages 2691-2696
Journal: Food Chemistry - Volume 141, Issue 3, 1 December 2013, Pages 2691-2696
نویسندگان
Hao-Cong Meng, Chao-Mei Ma,