Abstract:

The original anthocyanins from peanut skin can be extracted by using ultrasonic assisted solvent extraction, and the extraction conditions of anthocyanins can be optimized by response surface methodology. Based on the single factor test analysis and Box-Behnken experimental design principle, the optimal conditions which is suitable for the production of the peanut red skin proanthocyanidins was chosen according to the response surface methodology as follows: ethanol concentration is 70%, the solid-liquid ratio is 1∶50, ultrasonic power is 153 W, ultrasonic time is 8 min, the boiled temperature is 60 ℃, the boiled time is 50 min and extraction once. Under this optimum conditions, proanthocyanidins yield is 153.63 mg/g and is very close to the mode expected value 154.33 mg/g.

Key words:

Proanthocyanidins, Peanut red skin, Extract, Response surface methods(RSM)

摘要： 采用超声波辅助溶剂浸提法提取花生红衣中的原花青素,通过响应面法优化原花青素的提取条件。在单因素试验的基础上,根据Box-Behnken试验设计原理,利用响应面法分析得到的花生红衣中原花青素的最佳提取条件为:乙醇体积分数70%、料液比(g/mL)为1∶50、超声功率153W、超声时间8min、水浴温度60℃、水浴时间50min、提取次数1次。在此条件下原花青素的得率为153.63mg/g,与模型预期值154.33mg/g十分接近。

关键词: 原花青素, 花生红衣, 提取, 响应面法