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- Deacetylation degree has direct effect on properties of chitosan. 甲壳质脱乙酰度的高低直接影响到壳聚糖的性质。
- OBJECTIVE To establish a method for determining the deacetylation degree in chitosan by 1H-NMR. 目的建立测定壳聚糖脱乙酰度的1H-NMR方法。
- The water-soluble chitin with about 51.7% deacetylation degree exhibited high water solubility. 通过红外光谱、X-射线衍射、差热分析等测试表征了水溶性甲壳素结构。
- 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%25。
- 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 effects of molecular weight,deacetylation degree and modification reaction on the properties of chitosan membrane were discussed in details. 壳聚糖膜的组分包括酸的种类和浓度、增塑剂的种类和浓度与其他高分子材料复合等对膜性质的影响。
- 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 chitosan was prepared with 92% deacetylation degree using n-butanol and sodium hydroxide as a reaction medium and cetyltrimethylammonium bromide as a phase transfer catalyst. 采用正丁醇-氢氧化钠反应体系,以十六烷基三甲基溴化铵为相转移催化剂,制得脱乙酰度为92%25的壳聚糖。
- This paper studied the adsorption behavior of lab-made chitosan for acid dyeing waste water and basic dyeing waste waters, based on the effects of adsorbing time, deacetylation degree of chitosan, and pH of waste water. 用自制的壳聚糖对几种酸性染料和碱性染料模拟废水进行了吸附行为的研究,考察了吸附时间、壳聚糖脱已酰度及废水pH值对吸附效果的影响。
- As to UV optical property of blend membranes, we also researched on influence of chitosan with the various molecular weight and deacetylation degree, the crosslink and the carboxymethyl with. 我们还进一步考察了壳聚糖的分子量、脱乙酰度、羧甲基化以及交联作用对共混膜紫外滤光性能的影响。
- Objective:To estimate the influencing factors for alkalimetric analysis of deacetylated degree of chitosan. 目的:评价壳多糖脱乙酰度测定的减量法的影响因素。
- Keywords Chitosan;deacetylation degree;conductometric titration; 壳聚糖;脱乙酰度;电导滴定;
- Keywords chitosan;deacetylation degree;molecular weight; 壳聚糖;脱乙酰度;相对分子质量;
- Each of the components is useful in its degree. 每一个元件都各有程度不同的用处。
- Criticism is not lost on you to some degree. 在某种程度上，批评对你起了作用。
- An honorary degree was conferred on Mr.Jones. 琼斯先生被授予一个荣誉学位。
- They cannot be trusted in the slightest degree. 对他们一点也不能相信。
- He's methodical to the nth degree. 他做事有条不紊算是到家了。
- It is difference in kind, not merely in degree. 此乃本质之不同，并非仅仅是程度差异。
- Keywords chitosan;amino content;deacetylation degree;linear titration; 壳聚糖;氨基含量;脱乙酰度;线性滴定法;
