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The effects of water content and the added amount of triethylamine on peptide synthesis by immobilized enzyme were different from that of free enzyme. The catalytic efficiency of immobilized enzyme was better than that of free enzyme in most cases. The reuse times of immobilized α-chymotrypsin on MCM-22 are about 4-5 times.

结果表明，有机溶剂中含水量、三乙胺的加入量对自由酶与固载化酶的影响程度不同；多数情况下固载化酶的催化效果优于自由酶；吸附固载化酶的重复使用次数有限。

The best enzymolysis pH of cellulose was 6 and the enzymolysis temperature was 30℃.

该纤维素酶的最适酶解pH值为6，温度为30℃；Na对纤维素酶具有激活作用，Cu(上标 2+)则明显抑制纤维素酶的活性；VB2可以提高纤维素的分解率，VC使酶活力和纤维素的分解率明显升高。

Four white-rot fungi, Pleurotus eryngii, Polyporus versicolor, Pleurotus ostreatus and Fomes lignosus, are tested for their abilities to produce lignin peroxidase, manganese peroxidase and laccase in N-limited and N-rich media with shake culture. The four white-rot fungi only produce manganese peroxidase and laccase. Pleurotus eryngii and Pleurotus ostreatus are selected, due to their high enzyme activities, for the degradation and decolorization of alkali lignin.

首先观察了四种白腐菌Pleurotus eryngii，Polyporusversicolor，Pleurotus ostreatus和Fomes lignosus在限氮和富氮培养基中振荡培养产木素过氧化物酶、锰过氧化物酶和漆酶的能力，由于Pleurotus ostreatus和Pleurotus eryngii产酶能力较强，用于碱木素的降解脱色效果较好，二者在限氮条件下11天对碱木素降解脱色率为65%和72%。

Hydrogenases are key enzyme for bio-hydrogen production, most of them were rapidly inactivated by oxygen. It is important to bio-hydrogen production and hydrogen application that improve the O2-tolerance of hydrogenase.

氢酶是生物制氢的关键酶，大多数氢酶因对氧极敏感而易失活，因此提高氢酶的氧耐受性对生物制氢有重要意义。

The basic principles of drug metabolism and its enzyme are discussed, with an emphases on the interindividual variations and ethnic differences of two monooxygenases (cytochrome P450 CYP2D6 and CYP2C19) and one conjugation enzyme (N-acetyltransferases).

综述近10年来国内外有关药物代谢酶的分子遗传学进展，介绍药物代谢酶的基本概念并重点探讨了具有遗传多态性的两种氧化酶（细胞色素P450酶 CYP2D6 ， CYP2C19）和一种结合酶的个体和种族差异。

Determination of the properties of lactase expressed in E.coli.

原核表达乳糖酶的酶学性质测定制备原核表达乳糖酶的原酶液。

Changes of DBE activity of four cultivars had a single-peak curve, and the peak appeared in 14 d after anthesis. HPLC analysis showed that the activity of DBE to amylopectin was similar. There are two types of DBE in the wheat grains, one is isoamylase, and the other is limit dextrinase.

在灌浆过程中，淀粉去分支酶的活性均呈单峰曲线变化，灌浆中期活性最大；淀粉去分支酶对底物支链淀粉均具有相似的酶解活性；对灌浆中期小麦淀粉去分支酶进行的纯化结果表明，小麦籽粒胚乳中也存在2种类型的淀粉去分支酶，一种是以极限糊精为特异性底物的极限糊精酶，另一种是以支链淀粉为底物的异淀粉酶。

The physiological and biochemical resistant mechanism of tea cultivars to tea brown blight caused by Guignardia camelliae. Making use of the mensuration of spectrophotometric analysis to study the enzyme activity of Peroxidas, Polyphenol Oxidas, Catalas, Phenylalamine Ammenia-lyase. The result showed that there was definite difference to the metabolic rule of defence enzymes activity in the annual leaf tissue of the resistant and susceptible cultivars after infecting.

茶树抗云纹叶枯病的生理生化机理研究利用分光光度计对茶树叶片中过氧化物酶、多酚氧化酶、过氧化氢酶，苯丙氨酸解氨酶的活性进行了测定分析，结果表明：感染茶云纹叶枯病菌前后，抗病品种和感病品种当年生成叶中防御酶活性变化规律存在一定的差异。

The results imply that the inhibition of NADPH is due to the earlier binding of NADPH to the enzyme which caused the arm to move from the condensation domain to the reduction domain so as to affect the binding of substrate malonyl CoA and inhibit the activity.

实验结果表明：NADPH对脂肪酸合成酶的抑制可能是由于NADPH在酶上过早的结合而使该酶的活臂向远离缩合中心的方向移动，从而影响了底物丙二酰辅酶A与酶的结合，造成酶活性的下降。

Homology analysis demonstrated that, McChi5 protein, which contained a conserved domain of family 18 glycosyl hydrolyse, had the sequence similar to tabacco class V chitinases, several putative chitinases and chitinase-like proteins of Arabidopsis thiliania , and some chitinases from mammals, insects and bacteria.

同源性分析表明，McChi5蛋白与烟草V类几丁酶、拟南芥的推测几丁酶和类几丁酶蛋白、以及哺乳动物和细菌的一些几丁酶有序列相似性，并具有第18家族糖基水解酶的保守域。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。