柚皮提取果胶水解条件的研究

Study on hydrolysis of extracting pectin from pomelo peel

研究了以柚皮为原料提取果胶时的酸水解条件 ,通过正交实验确定最佳水解条件为 :温度 95℃ ,液固比 1 5 ml g,p H值 1 5 ,水解时间 1 h,此时果胶得率在 2 6 %以上。实验还发现从白果皮层提取果胶得率高、色泽好 ,柚皮的不同干燥方法对果胶提取率没有影响 ,用水浸泡原料不能提高提取率 ,而原料的粉碎度越高 ,越有利于果胶提取。

The acid hydrolysis of extracting pectin from pomelo peel is studied.Optimum reaction conditions are defined through orthogonal tests..Pectin extracted from the white layer of peel can have a high yield and a good color.Difference in peel drying method produces no effect on the yield.Peel soaking can not improve the yield either.High grinding degree,however,benefits the extraction.