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。
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。
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。
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。
The degree of deacetylation of chitosan was determined directly by 1st derivative UV spectrophotometry using hydrochloric acid as solvent and N acetyl D glucosamine (ACGLSM) as standard.
以盐酸为溶剂，N乙酰基D葡萄糖胺为标准品，用紫外一阶导数光度法直接测定壳聚糖的脱乙酰度。
The degree of deacetylation of chitosan prepared by the optimum condition is 88.53%, the viscosity average molecular mass is 9048. The experimental result mainly accorded the prospective desire.
最佳制备条件得到的壳聚糖脱乙酰度为88.53%，黏均分子质量为9048。实验结果基本符合预期的要求。
METHODS After being dissolved and depolymerized, the sample was determined by 1h-nmr. From the chemical shifts and the intensities of resonances of protons, the degree of deacetylation was determined.
方法样品经溶解、降解处理后，测定1h -NMR图谱，根据氢的化学位移和响应值，计算样品的脱乙酰度。
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。
The effect of N acylation on the solubility and crystallinity of chitosan and the effect of reactive time, temperature and proportion on degree of deacetylation were investigated.
研究了N-酰化反应对壳聚糖溶解性能和结晶性能的影响以及反应时间，温度，配比对脱乙酰度的影响。
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 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。
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。
The preparation conditions of chitosan and the chitosan with higher deacetylation degree are investigated. The preparation methods of some derivatives of chitosan are also introduced.
研究了壳聚糖的制备条件。同时对高脱乙酰度壳聚糖的制备进行了探索。探讨了一些壳聚糖衍生物的制备方法。
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。
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 %。
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。
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。
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。
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。
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。
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