查询词典 enzymes

Oyster was hydrolysed with six kinds of commercial proteinases including pepsin, trypsin, bromelin, papain, 3942 neutral proteinase and Alcalase 2.4L. Three enzymes of better hydrolysis effect were chosen as the target enzymes, taking the α-amino nitrogen in the hydrolysates as the index. The hydrolysis conditions of the three enzymes were investigated by single factor experiment and orthogonal test.

选取胃蛋白酶、胰蛋白酶、菠萝蛋白酶、木瓜蛋白酶、3942中性蛋白酶、Alcalase碱性蛋白酶等对牡蛎进行水解，以水解液中氨基酸态氮的含量为指标，确定了3种水解效果较好的酶：Alcalase碱性蛋白酶、胰蛋白酶和菠萝蛋白酶。

Although there were different influences on these soil enzymes for different metals, it was difficult to find a special soil enzyme to index a single heavy metal pollution in soil. Also, little was known about the interwork of heavey metals, soil enzymes and soil conditions. Therefore, lots of research will be needed to accomplish the foundation of enzymes indexes for assessing heavy metals pollution in soil.

虽然不同重金属元素对土壤酶活性的影响差异较大，但很难用某一专有土壤酶来反映特定重金属的污染，而且关于酶系统与重金属以及土壤自身和外界环境因素的相互作用机制尚不清楚，所以土壤重金属酶学指标的建立还需做大量的研究工作。

Skatole is harmful to human animals as well as environment. When human and animals take food which contains skatole or can be converted into skatole, skatole will inevitably interact with digestive enzymes. Skatole absorbed through skin may also interact with digestive enzymes in human and animals. So we studied the effect of skatole on three important digestive enzymes.

粪臭素对人、动物及环境均有一定的危害作用，含有粪臭素或可以转变为粪臭素的外源性食物进入体内后，粪臭素将不可避免地与动物和人体内的消化酶发生作用，人和动物通过皮肤吸收的来自外界环境中的粪臭素也有可能与体内的消化酶发生作用，因此我们研究了粪臭素对几种重要消化酶部分性质的影响。

In order to understand antioxidant enzymes activities in response to temperature increment and the active oxygen free radical clearing function of antioxidant enzymes in antarctic ice mircoralgae Chlorophyceae L4, the free radical generation rate, the malonaldehyde content changes and the corresponding antioxidant enzymes activities changes in Chlorophyceae L4 at different temperatures were determined.

为了阐明南极冰藻Chlorophyceae L4抗氧化酶活性对温度升高的响应以及了解冰藻细胞内抗氧化酶系统对活性氧自由基的清除作用，对不同温度下（包括最适温度6℃、高于最适温度10℃和15℃）Chlorophyceae L4细胞中自由基的产生速率、丙二醛含量的变化和相应的抗氧化酶系统活性的变化进行了测定。

The major results of this proposal are as follows:(1) ABA induces a rapid, substantial accumulation of apoplastic H2O2 in mesophyll and bundle sheath cells of maize leaves, and the accumulation of apoplastic H2O2 is involved in the induction of the chloroplastic and cytosolic antioxidant enzymes.(2) ABA-induced H2O2 production activates a 46 kDa MAPK, which in turn induces the expression of antioxidant genes and up-regulates the activities of antioxidant enzymes. The activation of MAPK also enhances H2O2 production, forming a positive amplification loop.(3) Water stress also induces the activation of a 46 kDa MAPK, which is dependent on the accumulation of ABA and H2O2 production induced by water stress and involved in the up-regulation of the expression and the activities of antioxidant enzymes.(4) ABA-induced H2O2 production mediates NO generation, which in turn activates a 46 kDa MAPK and results in the up-regulation in the expression and the activities of antioxidant enzymes in ABA signaling. NO-independent signaling is also involved in ABA- and H2O2-induced antioxidant defense.

本项目的主要研究结果如下：（1）ABA诱导的H2O2产生主要出现在叶肉细胞与维管束鞘细胞的质外体中，质外体H2O2的积累能够上调叶绿体与细胞溶质中抗氧化酶的活性；（2）ABA诱导的H2O2产生活化一个46kDa的MAPK，由此而导致编码抗氧化防护酶基因的表达与酶活性的上调；而MAPK的活化也能增强H2O2的产生，从而形成一个正的反馈调节环；（3）水分胁迫也能诱导一46kDa MAPK活化，这一MAPK活化依赖于水分胁迫诱导的ABA积累以及H2O2的产生，同时参与水分胁迫诱导的抗氧化防护基因的表达与抗氧化酶活性的上调；（4）ABA诱导一个依赖于H2O2的NO产生，NO活化一个46kDa的MAPK，从而导致抗氧化防护基因的表达以及抗氧化酶活性的上调；同时一个不依赖于NO的信号转导途径也存在于ABA诱导的抗氧化防护过程中。

The mechanism in which trehalose is produced from dextrin or starch hydrolyzate by endocellular enzymes of bacterium D-97 can be elucidated by high performance liquid chromatography with differential refraction detection basically, including the effect of the different carbon sources on the endocellular trehalose-producing enzymes in bacterium D-97 and the possibility or ability of the endocellular enzymes to produce trehalose using maltooligosaccharides of different chain lengths.

通过高效液相色谱/示差折光检测系统分析可获得细菌D-97利用糊精或淀粉水解物合成海藻糖的基本生物学信息，包括微生物培养碳源对细菌D-97胞内海藻糖合成酶系的影响以及该酶系利用不同种类或不同分子链长度的麦芽寡糖合成海藻糖的能力及作用过程。

By the partial purification of Arthrobacter nicotinovorus D-97 endocellular enzymes and the results of enzymatic reaction of enzymes of partition collection, it was found that enzymes related to trehalose synthesis were consisted of Trehalose-forming Enzyme and Trehalose-releasing Enzyme . Trehalose-forming Enzyme could convert maltooligosaccharides into non-reducing maltooligosyl trehalose by intramolecular transglycosylation, and Trehalose-releasing Enzyme could hydrolyze α-1, 4 linkage between the trehalose residue and the maltooligosaccharide residue to release trehalose and maltooligosaccharides with two glucose monomer lesser.

将食尼古丁节杆菌D-97胞内酶部分纯化并对各收集组分进行酶反应，发现其海藻糖合成酶系由海藻糖生成酶(Trehalose-forming Enzyme，TFE)和海藻糖释放酶(Trehalose-releasingEnzyme，TRE)组成，前者分子内转糖基将直链麦芽寡糖转化为没有还原性的麦芽寡糖基海藻糖，后者专一切割麦芽寡糖基海藻糖分子上麦芽寡糖基与海藻糖连接的α-1，4糖苷键，从而释放出海藻糖和减少了两个葡萄糖单体的麦芽寡糖。

Effects of extragenous enzymes on the development of gut, digesta pH value, vili structure of small intestine, growth performance of piglets, effects of extragenous digestive enzymes and polysaccharide enzymes on endogenous enzymes activities were also determined.

试验研究了外源酶对仔猪消化道组织生长、食糜pH值、小肠绒毛形态结构及生长性能的影响及添加消化酶和聚糖酶对仔猪消化系统内源酶活（胃蛋白酶、胰蛋白酶、胰淀粉酶和粘膜二糖酶）的影响。

He analysis of the category and function of TCB stress inducible proteins showed that different groups of proteins were induced by 5 mg L^(-1) TCB stress. They are detoxification enzymes (including esterase, aldo/keto reductases, and glutathione S-transferase), cell wall compound metabolism related enzymes (including UDP-glucose protein transglucosylase and GDP-mannose 3,5-epimerase 1), phytohormone metabolism and regulation related enzymes or proteins (including aci-reductone dioxygenase 4, beta-glucosidase, two members of pathogenesis-related proteins from family 10), primary and secondary metabolism regulative enzymes (including translational elongation factor Tu, cytosolic orthophosphate dikinase, triosephosphate isomerases, alanine aminotransferase, and isoflavone reductase).

CB胁迫能诱导根系内不同类型蛋白质的表达，它们是：解毒酶（包括脂酶、醛／酮还原酶、谷胱甘肽－硫转移酶），细胞壁物质代谢相关酶（包括蛋白转葡萄糖基酶、GDP-甘露糖－3，5-异构酶1），激素代谢或调节相关酶（包括酸式－还原酮二加氧酶、β-葡萄糖苷酶、病程相关蛋白家族10中的2个不同蛋白），原初或次生代谢相关酶（包括转录延长因子、细胞质磷酸丙酮酸双激酶、磷酸丙糖异构酶、丙氨酸氨基转移酶和异黄酮还原酶）。

The effect of the flight on the activities of energy metabolism related enzymes in the flight muscles of the Oriental armyworm moth, Mythimna separata females was studied. These enzymes measured were glyceraldehydes-phosphate dehydrogenase, glycerol-3-phosphate dehydrogenase, lactate dehydrogenase, and 3-hydroxyacyl-CoA dehydrogenase. In the first 5 min of the tethered-flight of 3 day-old moth, activities of all the enzymes related to carbohydrate and lipid metabulistu increased rapidly, enzymes related to lipid metabolism were completely activated, and the activities of HOAD were significantly strengthened. But in flight duration from 5th to 60th min, the activities of all energy metabolism related enzymes decreased, suggesting that the flight was going to be stabilized.

对3日龄粘虫雌蛾吊飞过程中4种相关酶3-羟酰辅酶A脱氢酶、3-磷酸甘油醛脱氢酶、3-磷酸甘油脱氢酶和乳酸脱氢酶的研究结果表明，在室内条件下，粘虫在吊飞过程中其能量代谢有以下特点：在吊飞的初始5min，所有与糖代谢和脂肪代谢相关的酶活性都快速升高，这段时期脂肪代谢的酶活性也完全被活化，HOAD活性明显增强；但在随后的5~60min持续吊飞期间与能量代谢有关的酶活性都有所下降，表明此时飞行活性趋于平稳。

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。