Antioxidant capacity of phenolic extracts from wild blueberry leaves and fruits

被引：0

作者：

Naczk, M ^{[1
]}

Amarowicz, R ^{[1
]}

Zadernowski, R ^{[1
]}

Pegg, R ^{[1
]}

Shahidi, F ^{[1
]}

机构：

[1] St Francis Xavier Univ, Dept Human Nutr, Antigonish, NS B2G 2W5, Canada

来源：

FOOD FLAVOR AND CHEMISTRY: EXPLORATIONS INTO THE 21ST CENTURY | 2005年 / 300期

关键词：

D O I：

暂无

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Leaves are by-products from mechanical harvesting of wild blueberries. To explore their use as a natural source of antioxidants, blueberry leaves were extracted with ethanol (95%, v/v) and acetone (70%, v/v). The dried crude extracts were then fractionated on a Sephadex LH-20 column. The extracts contained 181-213mg catechin equivalents/g of tannins and their antioxidant activity was similar to that of BHA is a beta-carotene linoleate model system. Over 99% of DPPH was also scavenged by 100 mu g of extract in each assay. The antioxidant activity of polyphenolic extracts was evaluated by the beta-carotene-linoleate and DPPH radical assays.

引用

页码：293 / 303

页数：11

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