Evaluation of two methods for the extraction of antioxidants from medicinal plants

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• 作者：Hua-Bin Li ; Yue Jiang ; Chi-Chun Wong ; Ka-Wing Cheng and Feng Chen
• 关键词：Extraction method ; Antioxidant ; FRAP assay ; TEAC assay ; Polyphenol
• 刊名：Analytical and Bioanalytical Chemistry
• 出版年：2007
• 出版时间：May, 2007
• 年：2007
• 卷：388
• 期：2
• 页码：483-488
• 全文大小：123 KB

文摘

The efficiencies of two traditional extraction methods used in Chinese medicine (the decoction method and the maceration method) were evaluated for the extraction of antioxidants from medicinal plants. A group of medicinal plants possessing nutritious and tonic functions were chosen as model plants. A commonly used extraction method was used as a reference method. The antioxidant capacities and total phenolic contents of the extracts were measured by ferric-reducing antioxidant power and Trolox equivalent antioxidant capacity assays as well as the Folin–Ciocalteu method, respectively. The results obtained indicated that the two traditional extraction methods could effectively extract antioxidants from medicinal plants. These extraction methods can be applied to the analysis and purification of antioxidants in plants, respectively. At home, people can use these methods to extract antioxidants from plants for consumption. In the food industry, these methods could be utilized to prepare crude extracts from plants containing antioxidants for use as food additives.