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d--氨基葡萄糖盐酸盐
相关语句
  “d-(+)-氨基葡萄糖盐酸盐”译为未确定词的双语例句
     Preparation of D-(+)-glucosamine Hydrochloride From Crab Shell
     用蟹壳制备D-(+)-氨基葡萄糖盐酸盐的研究
短句来源
  相似匹配句对
     Study on Preperation of D-Glucosamine Hydrochloride
     氨基葡萄糖盐酸盐的研制
短句来源
     Preparation of D-glucosamine hydrochloride
     D-氨基葡萄糖盐酸盐的研制
短句来源
     Preparation of D-glucosamine Hydrochloride
     氨基葡萄糖盐酸盐的制备
短句来源
     Preparation of D-(+)-glucosamine Hydrochloride From Crab Shell
     用蟹壳制备D-(+)-氨基葡萄糖盐酸盐的研究
短句来源
     Qualification Test of D(+)—Glucosamine Hydrochloride and Working out the Quality Standards
     D(+)氨基葡萄糖盐酸盐质量的检测及其质量标准的拟定
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D Glucosamine sulfate (D GlcN·12H 2SO 4) was prepared from D Glucosamine hydrochloride (D GlcN·HCl) with average yield of 93.7%,the purity of 98.6% and 21.5% of SO 2 4. The compound mp is 116℃. The[α] 20 D is +54°. The result of paper Chromatography is a single stop. The structure of the compound was elucidated by IR and elementary analysis.

D-氨基葡萄糖盐酸盐和浓硫酸为原料制备 D-氨基葡萄糖硫酸盐 ,平均收率为 93.7% ,含量为 98.6 % ,其中硫酸根含量平均为 2 1.5%。精品经纸层析为单一班点 ,Rf0 .58;差热分析测得其 m.p为 116℃ ;比旋光度 [α]2 0D 为 + 54°,干燥保存两个月后 [α]2 0D 为 + 4 0 .1°;红外光谱分析显示出伯胺基、伯醇基及六元酯醚环的特征吸收峰 ;元素分析结果为 C30 .10、H5.6 5及 N5.72 ,与理论值基本吻合。结果表明本工艺产物为高纯度 D-氨基葡萄糖硫酸盐。

N acetyl D glucosamine(N AcGA) was synthesized from D glucosamine hydrochloride (D GlcN·HCl)and acetic anhydride with the yield of 76 4% and the purity of 99 6% The product has the solubility of 0 27% in ethanol with 30℃,in contrast to 20% in water with 5℃ and 53% in water with 100℃ The compound was confirmed by PLC、DSC、IR、optical activity and elementary analysis,and has mp of 196~204℃ and [α] 20 D of +40 72°

D 氨基葡萄糖盐酸盐及乙酸酐为原料合成N 乙酰氨基 D 葡萄糖 ,精品收率为76 4% ,纯度为 99 6%。溶解度试验表明产品易溶于水而难溶于高浓度乙醇。

D glucosamine hydrochloride is accessible through the purification of hydrochloride hydrolysed chitin derived from the shells of lobsters(crabs).Experiments show that the best technological conditions are:the weight proportion between chitin and hydrochloric acid is 1∶7;the density of hydrochloric acid 30%;the temperature and time to hydrolyse 80℃ and 3.0-3.5h;the purge solvent alcohol;active carbon used to decolor at the temperature of 85℃ for 0.8h;D Glucosamine Hydrochloride produced under such conitions...

D glucosamine hydrochloride is accessible through the purification of hydrochloride hydrolysed chitin derived from the shells of lobsters(crabs).Experiments show that the best technological conditions are:the weight proportion between chitin and hydrochloric acid is 1∶7;the density of hydrochloric acid 30%;the temperature and time to hydrolyse 80℃ and 3.0-3.5h;the purge solvent alcohol;active carbon used to decolor at the temperature of 85℃ for 0.8h;D Glucosamine Hydrochloride produced under such conitions will satiate therequirementsofdifferent clients from the U.S.A and Japan and other countries.

从龙虾壳 (蟹壳 )制备甲壳素 ,后者用盐酸水解 ,再纯化得到D -氨基葡萄糖盐酸盐 .经实验研究表明其最佳工艺条件为 :投料比为甲壳素∶盐酸 =1∶7(重量比 ) ;盐酸浓度为 30 % ;水解温度为 80℃ ;水解时间为 3.0~ 3.5h ;洗脱溶剂为乙醇 ;活性炭脱色 ,脱色温度为 85℃ ;脱色时间为 0 .8h 依此工艺条件生产的新产品能够满足美国、日本等多个国家客户的要求 ,具有很好的经济效益和社会效益

 
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