Hyaluronic acid is a high molecular weight homopolysaccharide composed of repeating units of glucuronic acid and N acetyl glucosamine. 透明质酸是葡萄糖醛酸和N-乙酰氨基葡萄糖的双糖交联形成的一种高分子均聚糖,广泛应用于临床医学和高级化妆品生产。
N acetyl D glucosamine ( NAG ) is an important amino sugar with a lot of physiological activities and functional properties. 乙酰-D-葡糖胺是一种具有多种生理活性和功能性质的重要氨基糖。
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。
While the serum agglutinating activity of Anodonta woodiana remained over a pH value range from 6 to 9, and was inhibited by N Acetyl D Glucosamine intensively. 背角无齿蚌的血清凝集素能凝集鸡和鸭的红细胞,但不能凝集兔的红细胞,在pH6~9的范围内保持活性。
An improved preparation of N acetyl D glucosamine from D glucosamine hydrochloride is described. The yield is up to 96.7 % 改进了N-乙酰氨基葡萄糖的合成方法,后处理过程简单,产率提高至96.7%