Effects of the degree of deacetylation (DD) on the properties of chitosan.
脱乙酰度对壳聚糖材料性能的影响。
Results The degree of deacetylation of chitosan was found to be about 80%.
结果壳聚糖澄清剂的脱乙酰度约80 %，在澄清液中壳聚糖残留量小于0。
Chitosan which also is called soluble chitin is obtained by deacetylation of chitin.
壳聚糖由甲壳素经脱乙酰基而得，又称为可溶性甲壳素。
Under the suitable conditions, the deacetylation degree is more than 75% for 7 minutes.
在较适宜的条件下，7分钟内脱乙酰度可大于75％。
The deacetylation degree of obtained with optimal conditions chitosan was more than 76%.
用优化条件制备的壳聚糖的脱乙酰度>76 %。
Deacetylation degree and carboxymethyl degree of ch are unchanged after a series of reactions.
CH经系列反应后，脱乙酰度和羧基化度稳定。
The chitosan was prepared from chitin by deacetylating and the degree of deacetylation was 83%.
甲壳素通过脱乙酰化制备壳聚糖，脱乙酰度可达83%。
The degree of deacetylation has a great effect on the physiochemical and bioactive properties of chitosan.
壳聚糖的脱乙酰度直接影响壳聚糖的物理化学和生物特性。
This work first carries on the water content, the degree of chitin deacetylation of the merchandise chitosan.
本工作首先对商品壳聚糖进行水份含量，脱乙酰度等性能测定；
The effect of chitosan with different molecular weight and deacetylation degree on blood hemostasis was tested.
研究了不同脱乙酰度和不同分子量壳聚糖醋酸溶液的凝血作用。
In deacetylation degree, pupa shell of M. domestica and shell of Euplyphaga chitosan was relatively higher than others.
从几丁糖质量角度看，采用家蝇蛹壳和地鳖虫壳可制备脱乙酰度较高的几丁糖；
The effect of degradation conditions on the degree of deacetylation and instinct viscosity of chitosan is also studied.
采用正交设计，探讨降解条件对产物脱乙酰度、特性粘度等的影响。
Several epigenetic drugs targeting DNA methylation and histone deacetylation enzymes have been tested in clinical trials.
靶向DNA甲基化和组蛋白去乙酰化酶的几个表观药物已经在临床试验中被测试。
Histone acetylation contributes to expression of gene, while histone deacetylation leads to repression of gene expression.
组蛋白乙酰化促进基因表达，而去乙酰化则抑制基因表达。
Some chitosan samples with the different degree of deacetylation were determined by the method, the reproducibility was good.
不同脱乙酰度的样品按照所确立的条件测定均获得了重现性较好的结果。
Chitosan with excellent xanthation ability has high requirement on purity, degree of polymerization and degree of deacetylation.
具有良好黄化反应性能的壳聚糖对原料的纯度、聚合度、脱乙酞度等指标是有一定要求的。
Histone acetylation and deacetylation can regulate many chromosome functions, such as gene expression and chromosome segregation.
组蛋白乙酰化和去乙酰化可调节染色体的多种功能，例如基因表达和染色体分离等。
High degree of deacetylation and low molecular Chitosan L-lactate which has good solubility in water has good antibacterial effects.
高脱乙酰度低分子量壳聚糖l -乳酸盐将具有良好的水溶性和抑菌效果。
Chitosan is material from deacetylation of chitin, which from arthropod, coelenterate, annelids, protozoans, part of algae and fungi.
壳聚糖是来源于节肢、肠腔、环节、原生动物及海藻和真菌类的甲壳素类物质脱去乙酰基的产物。
We used phase transfer catalyst to improve the deacetylation of Chitosan, and the hydrogen peroxide degradation to reduce the molecular of Chitosan.
本文通过使用相转移催化剂来提高壳聚糖的脱乙酰度，使用过氧化氢降解法降低壳聚糖的分子量。
The factors which affect the deacetylation degree of chitosan and the viscosity, e. g. reaction time, base concentration and food rate are discussed.
并讨论了影响壳聚糖脱乙酰度和粘度的因素，例如，反应时间，碱浓度，料比。
RESULTS No influence of the pretreatment condition was observed on the deacetylation, but obvious effect was obtained on the degree of polymerization.
结果样品的前处理条件在所考察的范围内对测定结果的影响较小，但对样品的聚合度有较大影响。
A dissolving precipitated method has been developed for the preparation of chitosan having a high degree of deacetylation in the presence of ethyl alcohol.
以乙醇为反应介质，采用溶解沉淀法制备了高脱乙酰壳聚糖。
Deacetylation of p53 occurs through interaction with the SIRT1 protein, a deacetylase that may be involved in cellular aging and the DNA damage response (19).
SIRT1蛋白，一种涉及到细胞衰老和DNA损伤反应的去乙酰基酶能够与p53结合，促使后者的去乙酰化（19）。
The first work of this paper is measuring physical properties of chitosan. Degree of deacetylation(DD)of chitosan determined by acid base titration is about 83%.
实验首先对原料壳聚糖的物理性质进行测定：采用酸碱指示剂滴定法测定壳聚糖的脱乙酰度约为83%，应用粘度法测定其粘均分子量为十万左右。
The kinetics of heterogeneous deacetylation of chitin in alkaline solution under microwave irradiation in sealed and opening container were investigated in this paper.
比较了微波场中密闭式及开放式条件下，甲壳素非均相碱法脱乙酰反应的动力学情况。
The result shows that the composite sorbent has a high adsorption rate when the mass ratio of chitosan to rectorite was 0.04 and the deacetylation degree of chitosan was 90%.
结果表明：当壳聚糖与累托石的质量比为0.04，壳聚糖脱乙酰度为90%时，制成的复合吸附剂吸附效率较高。
We also studied on the clarification effect of chitosan treatment with different deacetylation degree and molecular weight, and storage stability of clarified kiwifruit juice.
分别用具有不同脱乙酰度和相对分子质量的四种壳聚糖澄清猕猴桃果汁，研究了不同壳聚糖的澄清效果和澄清后猕猴桃清汁的贮藏稳定性。
The acetylation and deacetylation of histone is charged by a pair of protea se with antistatic function on each other, which are histone transacetylase and histone deacetylase.
组蛋白乙酰化和去乙酰化由一对功能相互拮抗的蛋白酶——组蛋白乙酰基转移酶和组蛋白去乙酰化酶负责。
The acetylation and deacetylation of histone is charged by a pair of protea se with antistatic function on each other, which are histone transacetylase and histone deacetylase.
组蛋白乙酰化和去乙酰化由一对功能相互拮抗的蛋白酶——组蛋白乙酰基转移酶和组蛋白去乙酰化酶负责。
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