2) deacetylase
脱乙酰酶
1.
Studies on producing conditions of marine aspergillus fumigatus deacetylase;
海洋烟曲霉菌产脱乙酰酶发酵条件优化
3) degree of deacetylation
脱乙酰度
1.
On-site monitoring of the degree of deacetylation for the production of chitosan using near-infrared spectroscopy;
壳聚糖生产过程中脱乙酰度的近红外光谱法现场监测
2.
Preparation and characterization of chitosans of high degree of deacetylation with different molecular weights;
不同分子量高脱乙酰度壳聚糖的制备及表征
3.
Research of common indicator of degree of deacetylation of chitosan by alkalimetry
碱量法测定壳聚糖脱乙酰度通用指示剂的研究
4) the degree of deacetylation
脱乙酰度
1.
The determination of the degree of deacetylation of chitosan by linear potentiometric titration was studied, and the determined values were compared with the values determined by acid-base titration.
采用线性电位滴定法测定壳聚糖的脱乙酰度,并与酸碱指示剂滴定法测定的结果进行比较,结果表明线性电位滴定法测定比较适合粘度高的样品,且分析速度快,操作简单,精密度高。
2.
The paper discussed a method of determination of chitosan and the degree of deacetylation.
讨论了国内外水产界对壳聚糖产品标注的质量指标脱乙酰度的存在问题。
5) deacetylation
[diə,siti'leiʃən]
脱乙酰
1.
Study on the preparation of water-soluble chitosan by deacetylation of ultrafine chitin;
超细甲壳素脱乙酰制备水溶性壳聚糖的研究
2.
Chitosan raw material with low degree of deacetylation(D.
以壳聚糖粗品(脱乙酰度65%)为原料,在二甲亚砜-氢氧化钠体系中运用超声波技术加速脱乙酰反应,制备了脱乙酰度达97。
3.
Through single-factor experiments and orthogonal experiment, the effects of some factors on the degree of deacetylation and molecular weight of the chitosan product were studied.
本文采用微波技术由甲壳素脱乙酰制备壳聚糖,首次对在微波反应前采用乙醇浸泡对甲壳素进行预处理的条件进行了较为系统的研究,并通过单因素试验和正交试验分析了微波反应时间、碱液浓度、乙醇浸泡时间、乙醇浓度、微波功率对壳聚糖脱乙酰度和粘均分子量的影响,提出了制备高脱乙酰度、高粘均分子量壳聚糖的最优条件为(微波功率462W):微波反应时间20min,NaOH浓度50%,乙醇浸泡时间2。
6) deacetylation
[diə,siti'leiʃən]
脱乙酰度
1.
Research on the degree of deacetylation (D.D) of chitosan
壳聚糖脱乙酰度检测方法的研究
2.
Influence of reaction temperature, time, NaOH content and pre-marination on deacetylation in the preparation of chitosan from chitin is studied.
研究了甲壳质分步脱乙酰制壳聚糖反应的温度、时间、NaOH含量和预浸泡时间对脱乙酰度的影响。
3.
By comparing with the traditional method, it has saved money and protected environment The best process was got by SAS That is, when papain acted on the materials, the best proportion was water:papain=16:1,pH is 7 0, under the condition of 55℃,14?000?IU/g, for 5 hours Deacetylation was achieved by 46% NaOH at 110℃ for 2 hours By determinating deacetylation degree and viscosity, the most importa.
0 ,温度 5 5℃ ,反应时间 5h ;脱乙酰基条件为温度 110℃ ,碱浓度4 6% ,反应时间 2h ;通过测定几丁聚糖的主要质量指标脱乙酰度和粘度 ,证明了该工艺的可行
补充资料：7-氨基-3-脱乙酰氧基头孢烷酸
分子式：
CAS号：
性质：无色结晶，熔点241～242℃，旋光度+111°（c=0.175，二甲亚砜）。无抗菌活性，是制造半合成头孢菌素的基本原料之一。工业上采用由廉价的青霉素出发，先氧化成亚砜再扩的方法制取。直接从微生物Acremonium chrysogenum发酵亦可获得。
CAS号：
性质：无色结晶，熔点241～242℃，旋光度+111°（c=0.175，二甲亚砜）。无抗菌活性，是制造半合成头孢菌素的基本原料之一。工业上采用由廉价的青霉素出发，先氧化成亚砜再扩的方法制取。直接从微生物Acremonium chrysogenum发酵亦可获得。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条