cellobiulose, keto form | 26391-66-2

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: cellobiulose, keto form
• 英文别名: cellobiulose；O⁴-β-D-Glucopyranosyl-D-fructose；(3S,4R,5R)-1,3,5,6-tetrahydroxy-4-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyhexan-2-one
• CAS: 26391-66-2
• 化学式: C₁₂H₂₂O₁₁
• 分子量: 342.3
• InChiKey: PFCRQPBOOFTZGQ-WUYFHPBOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -4.8
• 重原子数：
  23
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.92
• 拓扑面积：
  197
• 氢给体数：
  8
• 氢受体数：
  11

反应信息

• 作为产物：
  描述：

  D-纤维二糖 在 calcium hydroxide 、 水 作用下， 生成 cellobiulose, keto form
  参考文献：
  名称：

  碳水化合物被碱降解。第九部分 纤维二糖，纤维二糖，纤维四糖和层粘连蛋白

  摘要：

  DOI：

  10.1039/jr9550001431

文献信息

• Isomerization and hydrolysis reactions of important disaccharides over inorganic heterogeneous catalysts
  作者：Rajesh Shukla、Xenophon E. Verykios、Rajakkannu Mutharasan

  DOI：10.1016/s0008-6215(00)90699-2

  日期：1985.11

  that reaction routes consist of parallel hydrolysis and isomerization of the disaccharides to their corresponding ketoses, followed by hydrolysis of the ketoses. Approximately 10–13% of the disaccharide reacted is not accounted for in the product distribution, indicating that degradation reactions occur, probably in the alkaline broth of the mixtures.

  摘要研究了纤维二糖，麦芽糖和乳糖在各种矿物和合成沸石催化剂上的异构化和水解反应。A，X和Y型沸石对此类反应最活跃。由间歇实验确定产物分布，并将其与在均相碱性条件下获得的分布进行比较。产物分布表明，反应路线包括二糖的平行水解和异构化为其相应的酮糖，然后进行酮糖的水解。大约10–13％的二糖反应没有在产物分布中说明，这表明降解反应可能发生在混合物的碱性液体中。
• CELLOBIOSE 2-EPIMERASE, ITS PREPARATION AND USES
  申请人：Watanabe Hikaru

  公开号：US20120040407A1

  公开（公告）日：2012-02-16

  The present invention has objects to provide a thermostable cellobiose 2-epimerase, its preparation and uses. The present invention attains the above objects by providing a thermostable cellobiose 2-epimerase, a DNA encoding the enzyme, a recombinant DNA and transformant comprising the DNA, a process for producing the enzyme, and a process for producing isomerized saccharides using the enzyme.

  本发明的目的是提供一种热稳定的纤维二糖2-表异构酶，其制备和用途。本发明通过提供一种热稳定的纤维二糖2-表异构酶，编码该酶的DNA，含有该DNA的重组DNA和转化体，生产该酶的过程以及使用该酶生产异构化糖的过程来实现上述目的。
• Matrix-forming composition containing pectin
  申请人：——

  公开号：US20030118712A1

  公开（公告）日：2003-06-26

  One aspect of the present invention relates to a liquid edible composition with a pH of more than 6, a viscosity below 600 mPas at a shear rate of 100s −1 and 20° C., and a viscosity of at least 125% of the aforementioned viscosity at a pH below 5 and a temperature of 37° C., the composition comprising at least 0.05 wt. % of pectin having a degree of methoxylation between 2 and 50 and/or of alginate; at least 5 mg calcium per 100 ml; and at least 0.1 wt. % indigestible oligosaccharide having a degree of polymerisation between 2 and 60. Another aspect of the invention relates to a method for the treatment or prevention of overweight or obesity in mammals, said method comprising the enteral administration to a mammal of an effective amount of the aforementioned composition.

  本发明的一个方面涉及一种液体食用组合物，其 pH 值大于 6，在剪切速率为 100s -1 该组合物包括至少 0.05 重量％的果胶，其甲氧基化程度在 2 至 50 之间和/或海藻酸；每 100 毫升至少 5 毫克钙；以及至少 0.1 重量％的难消化寡糖，其聚合度在 2 至 60 之间。 本发明的另一方面涉及一种治疗或预防哺乳动物超重或肥胖症的方法，所述方法包括向哺乳动物肠内注射有效量的上述组合物。
• Kinetic analysis for the isomerization of cellobiose to cellobiulose in subcritical aqueous ethanol
  作者：Nontanut Soisangwan、Da-Ming Gao、Takashi Kobayashi、Pramote Khuwijitjaru、Shuji Adachi

  DOI：10.1016/j.carres.2016.07.015

  日期：2016.10

  The isomerization of cellobiose to cellobiulose, and other degradation reactions of cellobiose were investigated in subcritical aqueous ethanol with concentrations of ethanol ranging from 0 to 60% (w/w) and at temperatures ranging from 170 to 200 degrees C. The maximum yield of cellobiulose (ca. 40%) was obtained from the treatment of cellobiose in 60% (w/w) aqueous ethanol at 190 degrees C. Glucose and fructose were also detected as byproducts. The concentration-time integral method was employed to analyze the rate constants for the isomerization and degradation processes. The rate constant of cellobiose isomerization to cellobiulose was greater than those of the degradation reactions under all experimental conditions, and it increased significantly with treatment temperature and ethanol concentration. However, the use of higher temperatures and ethanol concentrations was restricted due to decomposition of the saccharides and the low solubility of cellobiose, respectively. The effect of initial feed concentration (0.5-5.5% w/w) was also studied. The maximum productivity of cellobiulose, 54.1 kg/(h m(3)-reactor), was accomplished at a feed concentration of 5.5% (w/w) in 20% (w/w) subcritical aqueous ethanol. (C) 2016 Elsevier Ltd. All rights reserved.
• CELLOBIOSE 2-EPIMERASE, PROCESS FOR PRODUCING SAME, AND USE OF SAME
  申请人：Hayashibara Co., Ltd.

  公开号：EP2395080B1

  公开（公告）日：2014-08-06