Über die antioxidative Aktivität von Zitrusfruchtschalen
Über die antioxidative Aktivität von Zitrusfruchtschalen
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DOI：
10.1007/bf02023620
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发表时间：
1986-03
期刊：
影响因子：
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通讯作者：
G. Kroyer
中科院分区：
文献类型：
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作者：
G. Kroyer
研究了冷冻干燥柑橘果皮(柑橘、柠檬、西柚)及其乙醇提取物的抗氧化性能。冻干橙皮的抗氧化活性最高，柠檬皮的抗氧化活性稍低，西柚皮的抗氧化活性最低，但仍具有显著的抗氧化活性。通过制备果皮的甲醇提取物可以显著改善这一点。与黄酮苷、橙皮苷和柚皮苷及其苷元橙皮素和柚皮素的比较试验和自氧化研究表明，黄酮苷、橙皮苷和柚皮苷对柑橘果皮和提取物的抗氧化活性起主要作用。为了将它们的抗氧化活性与市售的天然抗氧化剂α-生育酚和抗坏血酸棕榈酸酯进行比较，考虑到它们的特殊性质和复杂的自然成分，冷冻干燥的柑橘皮及其甲醇提取物应该在更高的浓度下使用。此外，还讨论了黄烷酮类化合物的抗氧化活性与分子结构之间的关系。
The antioxidant properties of freeze-dried citrus fruit peels (orange, lemon, grapefruit) and methanolic extracts from the peel were studied. Freeze-dried orange peel showed the highest, lemon peel somewhat less and grapefruit peel the lowest but still remarkable antioxidant activity. This could be significantly improved by preparing methanolic extracts of the peels. Comparative examinations and autoxidation studies with the flavanon glycosides hesperidin and naringin as well as with their aglycones hesperetin and naringenin showed that the former are mainly responsible for the antioxidative activity of the citrus peel and extracts. In order to compare their antioxidative activity with that of the commercially available natural antioxidants alpha-tocopherol and ascorbylpalmitate, the freeze-dried citrus peels and their methanolic extracts should be used in higher concentrations, in consideration of their peculiar properties and complex natural composition. Furthermore, aspects of the correlation between antioxidant activity and molecular structure of the flavanones were discussed.