苹果渣中苹果多酚的提取工艺优化

Optimization of Extraction Process of Polyphenols from Apple Residue

采用有机溶剂提取法从苹果渣中提取苹果多酚,研究了提取溶剂乙醇体积分数、料液比、提取温度、提取时间对苹果多酚提取量的影响。通过单因素实验及正交实验确定苹果多酚的最佳提取工艺条件为:提取溶剂乙醇体积分数70%、料液比1∶25(g∶mL)、提取温度30℃、提取时间40min,此条件下苹果多酚的提取量为2.982mg.g-1。

Apple polyphenols was extracted from apple residue by using organic solvent extraction method.The effects of ethanol volume fraction,solid-liquid ratio,extraction temperature and extraction time on extraction of apple polyphenols were studied.Through single factor experiment and orthogonal experiment,the optimal extraction conditions were obtained as follows：using ethanol as solvent,ethanol volume fraction was 70%,solid-liquid ratio was 1∶25（g∶mL）,extraction temperature was 30 ℃,extraction time was 40 min.Under above conditions,the extraction of apple polyphenols was 2.982 mg·g-1.