查询词典 lipase

The results showed that Candida sp.lipase was the best lipase,the mixture of tert -butanol and DMSO (2∶3,vol) was the most suitable media for the reaction,and the appropriate reaction temperature was 30℃.

的催化活性最好；叔丁醇和DMSO组成的混合溶剂(体积比为2∶3)为最合适的反应介质；30℃为适宜的反应温度。

Due to adsorption on kieselguhr, lipase became harder to combine with R-2,4-DP and the reaction rate of hydrolysis decreased. On the other hand, it was easier for S-2,4-DP to get close to the active sites of lipase, so the rate increased.

吸附在硅藻土上的脂肪酶，与R-2，4-DP结合更为困难，反应速率下降；而S-2，4-DP接近酶反应中心更加容易，反应速率上升。

Objective To determine the possible role of hepatic lipase and lipoprotein lipase in the pathogenesis of fatty liver.

目的 探讨肝脂酶和脂蛋白脂肪酶在脂肪肝发病中的作用。

Objective: To separate natural bacteria producing high activities lipase from environment, and clone its lipase gene.

目的：从环境中分离高产脂肪酶的细菌，并克隆其脂肪酶基因。

Owing to the abroad application of Candida rugosa lipase in the resolution of racemic aminoacides, the prepared lipase was used in the resolution of phenylglycine and tert-leucine. Through the optimization of the reaction conditions, such as reaction substrate, pH, temperature, ion strength and additives, enantiomeric excesses for phenylglycine and tert-leucine reached 96% and 90.1%, respectively, enantiomeric ratio came up to 28. 9 and 15. 4, respectively.

鉴于该酶广泛应用于手性化合物的拆分研究，本论文中选用了两种手性氨基酸作为拆分对象，通过对反应体系中一系列条件的优化，包括底物、pH、温度、离子强度以及添加物的使用，苯甘氨酸和叔亮氨酸的对映体过量值分别达到96%和90.1%，对映催选择率分别达到28.9和15.4。

Enzymatic interesterification of palm stearin and soybean oil was carried out by immobilized lipase Lipozyme TL IM. The reaction curve of batch operation was studied. Results showed that the reaction reached blance in 3 h with 5% lipase at 70℃, temperature of 70~90℃ did no remarkable influence on the reaction rate.

进行了固定化脂肪酶Lipozyme TL IM催化棕榈油硬脂和大豆油酶法酯交换的研究，考察了酶法酯交换分批操作的反应动力学曲线，发现5%的加酶量、70℃下反应，反应3 h内达到平衡，反应温度在70~90℃对反应速度无明显影响。

The last part of this article emphasis on the mechanism of cichory extract N2. Hepatic lipase, NO and xanthine oxidase are observed in this aspect, and gene expression of hepatic lipase is also detected.

本部分研究观察了菊苣提取物 N2 对影响脂质代谢的肝脂酶、尿酸代谢的关键酶黄嘌呤氧化酶、一氧化氮的活性和含量，还从分子生物学角度观察了肝脂酶的基因表达。

Through screening lipases, lipase Novozym 435 and lipase Alcaligenes sp were found to show higher activity and better enantioselectivity for the resolution of 2-(2-chloro- 1-hydroxyethyl)thiophene. The optimal reaction conditions were finally achieved by further investigating the effects of solvents, temperature, rotation speed and enzyme concentrations.

通过对不同来源酶的筛选，找到了Novozym 435和Alcaligenes sp两种选择性较好的酶，它们均对该反应具有较高的选择性和较快的反应速度，在此基础上进一步通过对溶剂、温度、摇床转速以及酶用量的筛选，确定了能够有效拆分2-氯-1-(2-噻吩)-乙醇的较佳反应条件。

Lipase mediates esterification between caproic acid (0.6mol/L) and ethanol (0.6mol/L) in n-heptane at 40℃. The decrease in caproic acid is measured by titration and 1 unit of lipase synthetic activity is defined as 1 μmol caproic acid consumed per min.

在40℃下，脂肪酶催化己酸(0.6mol/L)与乙醇(0.6mol/L)在正庚烷中进行酯合成反应，通过滴定法测定剩余的己酸，1个脂肪酶有机相合成酶活单位定义为：在测定条件下每分钟消耗1μmol己酸的酶量。

It was increased ethyl hexanoate synthesis substrate concentration mediated by Rhizopus chinensis 2113 whole-cell lipase after improved synthetic activity and optimized reaction condition. The reaction condition were: caproic acid concentration 2.4mol/L, substrate molar concentration ratio 1:1.1, initial water content ≤0.2%, lipase water activity 0.3~0.66, enzyme amount 16%, reaction temperature 30℃, agitation speed 150 r/min.

通过合成酶活的提高及反应条件的优化，提高了华根霉2113全细胞脂肪酶催化己酸乙酯合成的反应底物浓度，其反应条件为：己酸浓度为2.4mol/L；酸醇摩尔浓度比1：1.1；反应体系含水量≤0.2%；脂肪酶水活度0.3～0.66；加酶量16%；反应温度30℃；150r/min振荡反应。

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。