Purple sweet potato pigment is a natural food pigment with bright color and multiplies biological functions such as antioxidant activity etc. There is a large amount of unused pigment in the vinasse of purple sweet potato wine. Therefore, in this study, the extraction processes of purple sweet potato pigment from purple sweet potato wine vinasse, as well as its purification conditions were investigated. As the results, 0.9% citric acid-95% ethanol (2/3, v/v) was a suitable extraction solvent to obtain the higher yield of purple sweet potato pigment from vinasse. AB-8 column chromatography showed that the loading ratio of 1/10 (w/v) of resin and pigment with the solvent of 40% ethanol at the flow rate of 2 mL/min were the optimal conditions for the purification of purple sweet potato pigment.
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机译：紫薯色素是一种天然食用色素，色泽鲜艳，并具有多种生物功能，例如抗氧化活性等。紫薯酒的酒糟中有大量未使用的色素。因此，本研究对紫薯酒酒糟中紫薯色素的提取工艺及其纯化条件进行了研究。结果，0.9％柠檬酸-95％乙醇（2/3，v / v）是合适的提取溶剂，以从酒糟中获得更高产率的紫色红薯色素。 AB-8柱色谱法表明，以2 mL / min的流速，树脂和颜料在40％乙醇中的负载率为1/10（w / v），是纯化紫薯的最佳条件。颜料。
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