【摘要】 茉莉花开放过程中 ,以PNPG为底物的 β_葡萄糖苷酶活性没有明显变化 ,同样丙酮粉中参与键合态芳樟醇释放的有关酶活性变化也不显著 ,但与键合态苯甲醇释放有关的酶活性却在离体后 6小时 ( 2 3∶0 0 )有一明显活性高峰 ,这一变化与游离态的苯甲醇变化规律相吻合 ;苯丙氨酸解氨酶在花初开时 ( 2 0∶0 0 )活性有所提高 ;非特异性酯酶同工酶谱带显示酯酶与香气释放有关 ;乙醇脱氢酶活性始终高于甲醇脱氢酶 ,而两种酶活性变化不大 ,前者在花前 ( 17∶0 0 )和花盛开时 ( 2∶0 0 )略有提高 ,后者在花后 (次日 5∶0 0 )有所提高 ;未检测到脂肪酸氧化途径中的关键酶———脂肪氧合酶活性更多还原

【Abstract】 Glucosidase activity had no obvious change during the blooming of jasmine flower with PNPG method. So did those enzymes in acetone powder, which participate the releasing of bound linalool. The activity of enzyme related to the releasing of bound benzyl alcohol showed an obvious high peak in jasmine flower after picked 6 h. This trend corresponded with the change of free benzyl alcohol. Phenylalanine ammonia_lyase activity increased slightly at the early stage of flower blooming. The bonds of the non_specific esterase isozymes showed that esterase was related to the forming of the fragrant esters. The activity of alcohol dehydrogenase was higher than that of methanol dehydrogenase, but the activities of both enzymes changed slightly. The activity of lipoxidase, the key enzyme of lipid oxidation path way, could not be observed during the flower blooming.更多还原