蛋白酶

Papain was modified using different anhydrides. The average ratio of modified-NH2 was tested by a trinitrobenzenesulfonic acid method. The native and modified papain samples were purified by dialysis and their structures were characterized by UV and IR.

用不同酸酐对木瓜蛋白酶进行化学修饰，以三硝基苯磺酸法测定修饰酶的平均氨基修饰度，对修饰前后的木瓜蛋白酶分别纯化并通过UV-vis和IR对其结构进行了表征。

These results indicated that, besides the elastase, MMP might also play an important role in the genesis and development of experimental emphysema and pulmonary hypertension.

此结果进一步证明了蛋白酶/抗蛋白酶失衡学说在肺气肿及肺动脉高压的发生和发展中的重要作用。

Effects of different carbon,nitrogen source and inorganic salt on the production of elastase were studied.

针对不同碳氮源及无机盐对芽胞杆菌EA915产弹性蛋白酶的影响进行了研究，结果表明，最适碳源为葡萄糖，最适氮源为酵母膏，无机盐硫酸镁，硫酸亚铁对弹性蛋白酶的产生有促进作用。

Foreign research in this aspect has started in early, and has established the prelimimary industrial system of elastase preparing by microbe fermentation .

国外有关弹性蛋白酶的研究起步较早，并且初步建立了以微生物发酵方式生产弹性蛋白酶的工业技术体系。

The protease activity in foregut was higher than that of midgut in an acidic condition at pH 5.0-5.8, while in an alkalescence condition at pH 7.0-8.6, the protease activity was higher in midgut than that in foregut. The lipase activity of foregut was high and stable in two pH ranges: 4.2-5.0 and 6.2-7.0, and that of midgut was high at pH 3.8, while the lipase lost enzyme activity at pH over 9.0. The amylase activity was high and stable at pH 6.6-7.4 in both foregut and midgut. The cellulase activity of foregut and midgut was high and stable at pH 6.2-7.4 and 5.4-7.0 respectively.

刺参前肠蛋白酶活力在酸性环境下较中肠高，且在反应pH为5.0-5.8之间酶活力相对稳定，而中肠蛋白酶活力在碱性环境下较前肠高，且在反应pH为7.0-8.6之间酶活力相对稳定；刺参前肠脂肪酶活力随着pH的升高出现两个相对稳定的峰值，分别为4.2-5.0和6.2-7.0区间，中肠脂肪酶活力在pH为3.8时达到最大值，而在pH超过9.0明显失活；刺参前肠和中肠淀粉酶活力在pH变化时表现出相似的变化趋势，在反应pH为6.6-7.4之间酶活力较高且相对稳定；刺参前肠和中肠中纤维素酶活力在pH变化时反应不一致，前肠淀粉酶在反应pH为6.2-7.4之间酶活力较高且相对稳定，中肠纤维素酶活力在反应pH为5.4-7.0之间酶活力较高且相对稳定。

Objective To investigate the effects of intense pulsed light on the cell viability of and secretion of MMP-1 and MMP-2 by cultured human fibroblasts. Methods Fibroblasts were isolated from healthy infant foreskins, and irradiated with 18, 29, 35 J/cm2 of IPL respectively.

目的 探讨强脉冲光照射对培养状态下的人成纤维细胞形态、增殖活性以及分泌基质金属蛋白酶1（MMP-1）和基质金属蛋白酶2（MMP-2）的影响。

An alkaline protease Alcalase AF 2.4 L was used to hydrolyze corn gluten meal and study the effects of pH and enzyme concentration on protein conversion. The optimum technological conditions were obtained in this test as follow: hydrolyzing temperature 55℃,addition of 2 ml alkaline protease(90 947 U/ml),pH=9,concentration of substrate 0.1g/ml,hydrolysis time 1 h.

研究了碱性蛋白酶Alcalase AF 2.4L水解玉米蛋白时，pH值和酶浓度对蛋白质转化率的影响，得到了实验范围内的最佳工艺条件：水解温度55℃，碱性蛋白酶加入量2ml(90 947U/ml)，pH值9，底物浓度0.1g/ml，水解时间1h。

Whey proteins which hydrolysed by the primary purified proteinase could stronger inhibit the active of ACE.

将提取的蛋白酶初步纯化，得到纯度更高的能水解乳清抑制ACE活力的蛋白酶。

How to draw proteinase from lactic acid bacteria ATCC15019 and ACE –inhibitory activity of the hydrolysed whey proteins was studied. The main contents were as follows.

本文研究了如何提取瑞士乳杆菌ATCC15019蛋白酶，并对蛋白酶乳清水解物在抑制ACE活性方面的作用进行了检测。

Animal enzymes include rennets and pancreatic protease and lipases; the proteases are used primarily in leather processing.

动物性酶包括胃和胰腺的蛋白酶与脂酶（来源于胃的用于奶酪的制作）；蛋白酶主要用在皮革制品中。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。