“黑美人”马铃薯中原花青素的提取工艺优化及稳定性分析

目的]对＂黑美人＂马铃薯中原花青素的提取工艺进行优化,并研究其稳定性。方法]以＂黑美人＂马铃薯为原料,采用乙醇提取法,研究了料液比、乙醇体积分数、浸提温度和浸提时间对原花青素提取效果的影响,同时研究了pH、温度和贮藏条件对＂黑美人＂马铃薯中原花青素稳定性的影响。结果]＂黑美人＂马铃薯中原花青素最佳提取条件为：料液比1∶9,乙醇体积分数75%,浸提温度60℃,浸提时间40 min;pH、温度和贮藏条件均不同程度地影响其稳定性。结论]在实际应用中要注意选择＂黑美人＂马铃薯的贮藏条件,从而使其中的原花青素发挥最佳功效。

Study on the Optimization of Extraction Technique and Stability of Proanthocyanidins from 'Heimeiren' Potatoes

Objective] Extraction technique of Proanthocyanidins from Heimeiren potatoes was optimized.In addition,the stability of the Proanthocyanidins was studied.Method] With the Heimeiren potatoes as raw materials,ethanol as extraction solvent,the impact of material-liquid ratio,ethanol volume fraction,extraction temperature,extraction time were studied.In addition,different pH value,temperature and storage conditions were set up to study the stability of Proanthocyanidins from Heimeiren potatoes.Results] The o...