甘薯废弃物中多酚物质的提取及抗氧化活性

Extraction and Antioxidant Activity of Polyphenols from Waste of Processed Ipomoea batatas Lam.

DOI：

中文关键词: 甘薯 废弃物 多酚类物质 抗氧化性

英文关键词: Ipomoea batatas Lam. waste polyphenol substance antioxidant activity

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中文摘要:

植物源多酚类化合物具有广泛的生理活性。采用传统生物化学方法对存在于甘薯工业加工后固形废弃物中多酚物质进行提取分离,并探索其相关用途,以提高甘薯的资源利用率。在设计溶剂对比试验基础上,对溶剂体积分数、提取温度、时间、料液质量体积比4个单因素进行正交试验,然后采用酒石酸亚铁分光光度法测定了总酚含量。结果表明,甘薯工业加工后固形废弃物中多酚物质提取的适宜工艺条件为乙醇体积分数55%,温度50℃,时间70 min,料液质量体积比1 g∶20 mL,该类甘薯渣多酚粗提液具有对H2O2的清除能力及还原能力,为一类有开发价值的天然抗氧化剂。

英文摘要:

In order to increase the utilization rate of resources,the process parameters for extracting the polyphenol from solid waste of processed Ipomoea batatas Lam.was studied using single factor experiment and the orthogonal tests in this manuscript.The optimum extraction process conditions determined and listed as follows: ethanol 55%,temperature 50 ℃,extraction time of 70 min,and ratio of materials and solution was 1∶20(W∶V).The results also showed that the polyphenolic extract had the ability to clear away H2O2 and the deoxidizing ability,and is a promising natural antioxidant.

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