查询词典 enzyme

Making standard curve by salicin enzyme activity ,we can get the formula of relative and absolute enzyme activity ,then transform into absolute enzyme activity of glucose.

通过水杨苷法作葡萄糖标准曲线，能得到相对酶活与绝对酶活的换算公式，进而得到绝对酶活。

The purified recombinant enzyme had optimal reaction conditions at pH 5.0 and 80 °C, was stable between pH 4.0 and pH 6.0. The enzyme had residual activity of 60% at 95 °C for 6 h at pH 5.0, thus has considerable potential in industrial applications. The specific activities of the enzyme to salicin, p-Nitrophenyl β-D-glucopyranoside, p-nitrophenyl β-D-xylopyranoside and p-nitrophenyl α-D-glucopyranoside were: 57500 U/mg, 1632 U/mg, 109 U/mg, and 39 U/mg, respectively, the specificity of salicin was the highest, p-nitrophenyl β-D-glucopyranoside followed, no activities to xylan and arabinofuranoside.

重组 Tm-SIGlA 的酶学性质研究表明：该酶最适作用温度和最适作用 pH 分别为80 ℃和 pH 5.0；在 pH 4.0-6.0 之间酶活性稳定，95 ℃保温 6 h 残留活性为 60%，具有非常高的热稳定性；在所测定的底物中，该酶对水杨苷、对硝基苯酚-β-D-葡萄糖苷(p-Nitrophenyl β-D-glucopyranoside)、对硝基苯酚-β-D-木糖苷(p-Nitrophenyl β-D-xylopyranoside)和对硝基苯酚-α-D-葡萄糖苷(p-Nitrophenyl α-D-glucopyranoside)的比酶活分别为：57500 U/mg、1632 U/mg、109 U/mg 和39 U/mg，作用水杨苷的专一性最强，其次为对硝基苯酚-β-D-葡萄糖苷，没有检测到对木聚糖和阿拉伯糖苷的活性。

Eggs and soyabean milk contains soap protein enzyme stayer,which can control liveness of flesh's protein enzyme,affecting protein digestion and absorption internal to the body.Egg white contains tough protein,which can integrate with soap protein enzyme in the soybean milk,blocking the break down of protein,thereby reducing the protein absorptivity of the body.

鸡蛋与豆浆生豆浆中含有胰蛋白酶抑制物，它能抑制人体蛋白酶的活性，影响蛋白质在人体内的消化和吸收，鸡蛋的蛋清里含有粘性蛋白，可以同豆浆中的胰蛋白酶结合，使蛋白质的分解受到阻碍，从而降低人体对蛋白质的吸收率。

It was helpful to extract enzyme by using homogenate in citrate-phosphate buffer; The enzyme activity extracted from pH5.6 buffer is higher than that of pH5.8.The loss of enzyme activity of this zymin is better, but easily used in manufacture.

丙酮粉提取法会引起回收酶活性较大损失，其总酶活仅是缓冲液匀浆法和浸提法的1/5、1/7，但酶制剂本身的酶活性较好，使用方便，有利于工业化生产应用。

32 U/mL enzyme activity can be detected in medium after fermentation. By optimizing the zymotic medium and fermentation conditions, recombination B. subtilis can express as high as 110.02 U/mL of Alkalineβ-mannanase. Cycle of fermentation needs 5 days(4 days is needed in induced expression ), then enzyme activity maintained at the highest level, less than 5 % enzyme activity was lost in next 2 days.

为了继续对碱性β-甘露聚糖酶进行高表达研究，试验采用了芽孢杆菌发酵培养基来进行产酶研究，初步诱导酶活达到29.32 U/mL，通过对发酵条件的优化，该重组枯草芽孢杆菌的产酶水平有了大幅度的提高，最高可达110.02 U/mL。

However, the first one enzyme 1-deoxy-D-xylulose 5-phosphate synthase gene and the second one enzyme 1-deoxy-D-xylulose 5-phosphate reductoisomerase gene in MEP pathway had been reported and expressed in the latex of rubber tree, indicating that MEP pathway may be involved in rubber biosynthesis.4 - hydroxy -3 - methyl -2 -- butenyl -4 - phosphate reductaseis the last enzyme that catalytic 4 - hydroxy -3 - methyl -(2E)- butenyl -4 - phosphate to generate isopentenyl pyrophosphate.

然而已有报道MEP途径中第1个酶1-脱氧-D-木酮糖-5-磷酸合成酶（1-deoxy-D-xylulose 5-phosphate synthase，DXS）基因和第2个酶1-脱氧-D-木酮糖-5-磷酸还原酶（1-deoxy-D-xylulose 5-phosphate reductoisomerase ，DXR）基因在橡胶树胶乳中的表达，这表明MEP途径可能参与橡胶的生物合成。4-羟基-3-甲基-2--丁烯基-4-磷酸还原酶（4-hydroxy -3-methyl-2--butenyl-4-diphosphate reductase，HDR）是异戊烯基焦磷酸合成途径之一甲基赤藓糖磷酸（methylerythritol phosphate，MEP）途径中的最后一个酶，催化4-羟基-3-甲基-(2E)-丁烯基-4-磷酸生成异戊烯基焦磷酸。

The experiment two wasundertaken to examine the effect of different enzyme preparation levels on growthperformance, nutrient digestibility, intestinal morphology, serum biochemical parameters,physico-chemical property and chemical digestion of intestine digesta, endogenousdigestive enzyme and caecal microbial population for gosling, the diet with stuff of highfiber content was added 0, 0.2% and 0.4% enzyme preparation for the experimentalgroups.

试验二采用单因素试验设计，研究含高纤维原料的日粮中添加不同酶制剂水平(0、0.2％、0.4％)对雏鹅生长性能、养分消化率、消化道组织形态、血清指标、肠道食糜理化性质和化学性消化、机体内源性消化酶及盲肠微生物等的影响。

The effects of cadmium stress on POD activity of D. caryophyllus were mainly on the change of individual enzyme belt Rf value, the drop of enzyme band number, and the increase of enzyme activeness.

镉胁迫下对石竹叶POD的影响主要表现为个别酶带Rf值的改变、酶带数的下降和活性的增加。

It has been reported that F185K and C280S mutations of HIV1 integrase would improve the enzyme solubility, and the catalytical activity of the enzyme was the same as that of the wildtype enzyme in vitro.

coli中进行整合酶基因表达，SDSPAGE鉴定表达产物，亲和层析纯化蛋白，酶联免疫吸附实验方法测定整合酶的生物学活性。

Compared with prozyme A, alkali enzyme was a powerful enzyme for the hydrolysis of corn protein, but it could result deamidation, that was another reason for selecting prozyme A as the first enzyme.

与复合酶A相比，碱性蛋白酶也能较好地作用于黄粉蛋白，但它对酰胺基有较强的水解作用，这是选择复合酶A作为第一次水解用酶的又一个主要原因。

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。