[Objective] The aim was to obtain the optimum method for extracting pectin from citrus peel. [ Method] With dried citrus peel powder as raw material, by using the method of acid hydrolysis deposition and L9 (34 ) orthogonal test, the extraction conditions were optimized. [Result] The optimum conditions were pH 2.0, temperature 80 ℃, time 70 min, solid-liquid ratio 1:30 g/ml. Under the above conditions, the average yield of pectin was 16. 6% , pectin purity was 87. 6% , the content of methoxyl pectin was 76. 8% . [ Conclusion] The study will provide reference for comprehensive utilization of citrus peel and pectin autonomous production in China.%[目的]研究从芦柑皮中提取果胶的最佳方法.[方法]以烘干的芦柑皮粉末为原料,采用酸水解乙醇沉淀法提取果胶,并应用L9(34)正交试验对提取条件进行了优化.[结果]确定最佳提取条件为pH 2.0、提取温度80℃、提取时间70 min、料液比1:30g/ml,在此条件下果胶平均得率为16.60％,果胶纯度为87.6％,甲氧基果胶含量为76.8％.[结论]为芦柑皮的综合利用和我国果胶自主生产提供了参考.
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