环糊精糖基转移酶 | 9030-09-5

• 物质功能分类: 生物化工 - 酶及辅酶类
• 分子结构分类: 转移酶 - 糖基转移酶 - 己糖基转移酶
• 中文名称: 环糊精糖基转移酶
• 英文名称: cyclomaltodextrin glucanotransferase
• 英文别名: Bacillus macerans amylase；cyclodextrin glucanotransferase；alpha-cyclodextrin glucanotransferase；alpha-cyclodextrin glycosyltransferase；beta-cyclodextrin glucanotransferase；beta-cyclodextrin glycosyltransferase；gamma-cyclodextrin glycosyltransferase；cyclodextrin glycosyltransferase；cyclomaltodextrin glucotransferase；cyclomaltodextrin glycosyltransferase；konchizaimu；alpha-1,4-glucan 4-glycosyltransferase, cyclizing；BMA；CGTase；neutral-cyclodextrin glycosyltransferase；1,4-alpha-D-glucan 4-alpha-D-(1,4-alpha-D-glucano)-transferase (cyclizing)；Bacillus macerans cyclomaltodextrin glucanyltransferase
• CAS: 9030-09-5

物化性质

• 密度：
  1.37[at 20℃]
• LogP：
  -1.3 at 20℃

制备方法与用途

用途

环糊精糖基转移酶主要应用于生产环糊精（CD）和糖基化碳水化合物，同时在食品行业中也发挥着重要作用。

反应信息

• 作为试剂：
  描述：

  苯基-BETA-葡萄糖吡喃糖苷 在 环糊精糖基转移酶 作用下， 以 acidic aq. solution 为溶剂， 反应 24.0h， 生成 、 、 、 phenyl β-D-glucopyranosyl-(1->4)-β-D-glucopyranoside
  参考文献：
  名称：

  Optimized synthesis of specific sizes of maltodextrin glycosides by the coupling reactions of Bacillus macerans cyclomaltodextrin glucanyltransferase

  摘要：

  Bacillus macerans cyclomaltodextrin glucanyltransferase (CGTase, EC 2.4.1.19), in reaction with cyclomaltohexaose and methyl alpha-D-glucopyranoside, methyl beta-D-glucopyranoside, phenyl alpha-D-glucopyranoside, and phenyl beta-D-glucopyranoside gave four kinds of maltodextrin glycosides. The reactions were optimized by using different ratios of the individual D-glucopyranosides to cyclomaltohexaose, from 0.5 to 5.0, to obtain the maximum molar percent yields of products, which were from 68.3% to 78.6%, depending on the particular D-glucopyranoside, and also to obtain different maltodextrin chain lengths. The lower ratios of 0.5-1.0 gave a wide range of sizes from d.p. 2-17 and higher. As the molar ratio was increased from 1.0 to 3.0, the larger sizes, d.p. 9-17, decreased, and the small and intermediate sizes, d.p. 2-8, increased; as the molar ratios were increased further from 3.0 to 5.0, the large sizes completely disappeared, the intermediate sizes, d.p. 4-8, decreased, and the small sizes, d.p. 2 and 3 became predominant. A comparison is made with the synthesis of maltodextrins by the reaction of CGTase with different molar ratios Of D-glucose to cyclomaltohexaose. (c) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2005.11.014