化学

• 脱乙酰度

  This new technology needs lower NaOH concentration, shorter reaction time and less water washing than that of conventional NaOH aqueous solution method. The produced chitosan is of high degree of deacetylation （%D. D>90） and molecular weight （9.3 105）.2.

  该工艺的特点是低碱度，反应时间短，产品脱乙酰度高（％D.D＞90），黏度大（分子量9.3×105），产率80％左右，与传统的水溶液碱液法比较可以节省70～80％的烧碱和2／3左右的洗涤水。

• 脱乙酰基

  P 桪梘lucopyranosede. It抯 deacetylation didn抰 obtain expective result.

  它的脱乙酰基反应，未能得到预期的结果。

机械工程

• 壳聚糖

  The principal derivative of chitin, chitosan, is obtained by N-deacetylation of more than 55%.

  壳聚糖是甲壳素脱去55％以上的N-乙酰基的产物。

生物学

• 去乙酰化

  Tumorigenesis is always accompanied by the epigenetic modifications of anti-oncogenes,such as DNA methylation and histone deacetylation.

  肿瘤发生过程中,经常伴有抑癌基因的表观遗传学修饰,如DNA甲基化、组蛋白去乙酰化等。

• 脱乙酰作用