响应面分析优化晋西北酸粥和糜米总酚的提取工艺Optimization of Extraction Process of Total Phenols from Sour Porridge in Northwestern Shanxi and Milled Nonglutinous Broomcorn Millet by Response Surface Analysis
王琪,彭佳伟
摘要(Abstract):
以总酚提取量为指标,研究自然发酵的晋西北酸粥和其原材料糜米中总酚的最佳提取工艺,采用福林酚比色法测定总酚提取量。比较不同的单因素对晋西北酸粥和糜米中总酚提取量的影响。在此基础上,通过响应面分析,探讨不同丙酮浓度、料液比、提取时间和提取温度对总酚提取量的影响。结果发现,晋西北酸粥中总酚的最佳提取条件为丙酮浓度58.06%、料液比1∶41.13、提取时间30.57 min和提取温度41.81℃,在此条件下总酚的最大提取量为1.88 mg/g。糜米中总酚的最佳提取条件为丙酮浓度84.78%、料液比1∶44.76、提取时间34.34 min、提取温度42.11℃,在此条件下总酚的最大提取量为1.51 mg/g,而且晋西北酸粥中总酚提取量约是糜米中总酚提取量的1.24倍。
关键词(KeyWords): 晋西北酸粥;糜米;总酚;响应面实验优化
基金项目(Foundation): 山西省自然科学基金面上项目(20210302123464)
作者(Author): 王琪,彭佳伟
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