The use of disedium EDTA,zinc acetate,sedium chloride and ascorbic acid in the extracting process could raise the ativities of bromelin in fruit pulp,stem and leaf by 69.37%,93.88%and 139. 69%respectively.

• 在提取过程中使用乙二胺四乙酸二钠、醋酸锌、氯化钠、抗坏血酸可使果肉蛋白酶、茎蛋白酶和叶蛋白酶活性分别提高69.；37%25、93