Method for extracting low-molecular pectin from banana peel

The invention belongs to the field of pectin extraction methods, and particularly relates to a method for extracting low-molecular pectin from banana peel. Comprising the following steps: treating banana peel with tea polyphenol, then carrying out enzymolysis by using an enzymolysis preparation, extracting pectin by combining microwaves, and then carrying out alcohol precipitation, filtration and drying to obtain the low-molecular pectin. The low-molecular pectin is extracted by combining enzymolysis with a microwave extraction method, banana peel oxidation is avoided by utilizing tea polyphenol, the pectin is reserved, the low-molecular pectin with the molecular weight lower than 3kD is finally obtained, and the extraction rate is high. 本发明属于果胶提取方法领域，特别涉及一种从香蕉皮中提取低分子果胶的方法。包括茶多酚处理香蕉皮，然后利用酶解制剂进行酶解，结合微波提取果胶，然后通过醇沉，过滤，干燥获得低分子果胶。本发明通过酶解结合微波提取法提取低分子果胶，利用茶多酚避免香蕉皮氧化，保留果胶，最终获得分子量低于3kD的低分子果胶，且提取率高。