期刊论文

中文

食品与机械

1003-5788

2015

31

3

194-197,201

10.13652/j.issn.1003-5788.2015.03.045

湘莲星火计划项目（编号:2013GA770001）；

本校为第一机构

从提取溶剂及提取条件等方面对紫薯花色苷提取进行工艺优化,以花色苷提取率为考察指标,用单因子试验对提取溶剂进行筛选并确定提取溶剂pH,再利用析因试验对提取条件进行分析,通过最速上升试验和中心组合试验,优化提取工艺。结果表明,盐酸乙醇溶液的提取效果最佳;时间和温度对提取效果影响更显著,优化后条件为:时间84 min、温度74 ℃;该条件下花色苷提取率为419.529 mg/100 g。

The influence of extraction solvent,pH and the extraction conditions on the extraction ratio of anthocyanin from purple sweet potato was optimized by single experiment and 2-level factorial design.By using 24 factorial design,the extraction time and temperature were identified as main factors,and the selected variables were further investigated by steepest ascent analysis and optimized by central composite design.The results indicated that hydrochloric acid with ethanol solution was the best solvent,meanwhile,the extraction temperature and time...