【摘要】 本文报道制备固定化苯丙氨酸解氨酶(PAL)的初步结果。采用包埋和共价结合两种方法将PAL固定化。结果表明前者的偶联率高于后者。冷冻干燥,4°下贮存6个月后,活性存留分别为89％和76％,说明固定化后稳定性良好。包埋法采用不同T/C比(T为凝胶总浓度;C为交联百分比)的聚丙烯酰胺凝胶(PAG)包埋,结果证明按T/C比为3:30时固定化的酶活性明显高于T/C比为8:19者,二者的相对活性分别为58％和6％。用戊二醛将PAL固定于Bio—Gel P—300上的酶活性高于用碘化—1—[环已基—3—(3—二甲氨丙基)]碳二亚胺(CDC)固定化的酶,相对活性分别为63％和18％。更多还原

【Abstract】 PAL was entrapped with PAG and covalent bound to Bio—Gel P—300 by glutaraldehyde and CDC. The percent of the enzyme immobilized by both methods and the relative activity of the immobilized PAL were measured. The percent of activity retained on storage for 6 months of the PAL immobilized by both methods were 89% and 76% respectively.更多还原