Ascorbic Acid and Tannins from Emblica officinalis Gaertn. Fruits-A Revisit

被引：40

作者：

Majeed, Muhammed ^{[1
]}

Bhat, Beena ^{[1
]}

Jadhav, Atul N. ^{[1
]}

Srivastava, Jyotish S. ^{[1
]}

Nagabhushanam, Kalyanam ^{[1
]}

机构：

[1] Sami Labs Ltd, Bangalore 560058, Karnataka, India

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2009年 / 57卷 / 01期

关键词：

Emblica officinalis; amla; ascorbic acid; HPLC; HPTLC; NMR; LC-MS; CONSTITUENTS;

D O I：

10.1021/jf802900b

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The fruits of Emblica officinalis Gaertn. (Euphorbiaceae), also known as amla in Ayurveda, are considered to be a rich source of ascorbic acid. However, the antioxidant activities exhibited by E. officinalis extract are superior to those of ascorbic acid itself. Low molecular hydrolyzable tannins emblicanins A and B have been suggested in the earlier literature to be the contributory antioxidant molecules in the extract. This work finds no evidence for the presence of emblicanins A and B in the extract. In addition, the high content of ascorbic acid is also questionable due to previous nonidentification of coeluting mucic acid gallates. This paper reports a new HPLC method to detect even trace amounts of ascorbic acid in E officinalis fruit juice or extract.

引用

页码：220 / 225

页数：6

共 8 条

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[Anonymous], DRAVYAGUNA VIJNANA 1

[2]

[Anonymous], 1999, INDIAN HERBAL PHARMA, V2

[3]

Ghosal S, 1996, INDIAN J CHEM B, V35, P941

[4] Pelargoniins, new ellagitannins from Pelargonium reniforme [J].