摘要
研究发芽对粟米中多酚含量变化影响,并采用响应面法优化超声波提取发芽粟米多酚工艺条件,在单因素试验基础上,选取乙醇浓度、提取时间和料液比为自变量,以总酚得率为响应值,设计Box–Behnken试验;结果表明,粟米中总酚含量在发芽过程中得到显著提高(ρ<0.05);提取总酚最佳工艺条件为:乙醇浓度为70%、提取时间为8 min、料液比为1∶30,在此条件下,提取总酚得率为2.65 mg/g。
The effect of germination on changes in content of polyphenols was studied, and then response surface methodology was used to optimization ultrasonic extraction conditions ofpolyphenols in germinated foxtail millet. Based on single-factor test, Box-Behnken test about independent variables （ ethanol concentration, extraction time and solid-liquid ratio ） and dependent variable （ extraction yield of total polyphenols ） was designed. The results showed that the content of total polyphenols increaased significantly during germination （p〈0.05）. The optimum conditions were as following： ethanol concentration was 70%, extraction time was 8 rain, solid-liquid ratio was 1 ： 30 （ g/mL ）, in this condition, and the extraction yield of total polyphenols was 2.65 mg/g.
出处
《粮食与油脂》
北大核心
2012年第1期22-25,共4页
Cereals & Oils
关键词
发芽粟米
多酚
超声波提取
germinated foxtail millet
polyphenol
ultrasonic extraction
