کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1187687 | 963471 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polyphenols from longan seeds and their radical-scavenging activity
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Polyphenols from longan seeds and their radical-scavenging activity Polyphenols from longan seeds and their radical-scavenging activity](/preview/png/1187687.png)
چکیده انگلیسی
Five previously uncharacterised polyphenols, ethyl gallate (2), 1-β-O-galloyl-d-glucopyranose (3), methyl brevifolin carboxylate (4), brevifolin (5) and 4-O-α-l-rhamnopyranosyl-ellagic acid (8), and three previously identified polyphenols, gallic acid (1), corilagin (6) and ellagic acid (7), were isolated from longan seeds. Their structures were identified by spectroscopic and chemical methods including HRESIMS and NMR. Eight polyphenols exhibited scavenging activity towards DPPH radicals with SC50 values of 0.80–5.91 μg/ml and towards superoxide radicals with SC50 values of 1.04–7.03 μg/ml. The radical-scavenging activity of the newly characterised polyphenols was comparable to that of gallic acid, corilagin and ellagic acid.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 116, Issue 2, 15 September 2009, Pages 433–436
Journal: Food Chemistry - Volume 116, Issue 2, 15 September 2009, Pages 433–436
نویسندگان
Gongming Zheng, Liangxiong Xu, Ping Wu, Haihui Xie, Yueming Jiang, Feng Chen, Xiaoyi Wei,