Studies on the antioxidant activity of Indian Laburnum (Cassia fistula L.):: a preliminary assessment of crude extracts from stem bark, leaves, flowers and fruit pulp
Studies on the antioxidant activity of Indian Laburnum (Cassia fistula L.):: a preliminary assessment of crude extracts from stem bark, leaves, flowers and fruit pulp
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DOI：
10.1016/s0308-8146(02)00179-6
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发表时间：
2002-10-01
期刊：
影响因子：
8.8
通讯作者：
Becker, K
中科院分区：
文献类型：
--
作者：
Siddhuraju, P;Mohan, PS;Becker, K
研究了印度花楸叶90%乙醇提取物、茎皮、果肉和花90%甲醇提取物的抗氧化性能。抗氧化活性依次为茎、皮、叶、花、果肉，其抗氧化活性与提取物中总多酚含量有良好的相关性。花和果肉部分抗氧化活性低的原因可能是存在一些促氧化剂，如大黄酚和还原糖，它们是提取物中主要的抗氧化化合物。因此，茎皮在还原力、抑制过氧化、O-2（-）等方面具有较强的抗氧化活性。DPPH自由基清除能力。(C) 2002 Elsevier Science Ltd.版权所有。
The antioxidant properties of 90% ethanol extracts of leaves, and 90% methanol extracts of stem bark, pulp and flowers from Indian Laburnum (Cassia fistula L.) were investigated. The antioxidant activity power was in the decreasing order of stem bark, leaves, flowers and pulp and was well correlated with the total polyphenolic content of the extracts. The reason for low antioxidant activity in the flower and pulp fractions could be the presence of some prooxidants, such as chrysophanol and reducing sugars which dominate the antioxidant compounds present in the extracts. Thus, the stem bark had more antioxidant activity in terms of reducing power, inhibition of peroxidation, O-2(-). DPPH radical scavenging ability. (C) 2002 Elsevier Science Ltd. All rights reserved.