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Process for the enzymatic preparation from sucrose of a mixture of sugars having a high content of isomaltose, and products obtained

Patent 4861381 Issued on August 29, 1989. Estimated Expiration Date: Icon_subject July 1, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2742365

Inventors

Assignee

Application

No. 07/068940 filed on 07/01/1987

US Classes:

127/41, Inversion of sucrose127/46.1, Treatment of sacchariferous solutions127/46.2, Involving ion manipulation, e.g., ion exchange, etc.426/658, Carbohydrate containing435/193, Transferase other than ribonuclease (2.)435/211Dextranase (3.2.1.11)

Examiners

Primary: Sneed, Helen M. S.
Assistant: Pak, Chung K.

Attorney, Agent or Firm

International Classes

C12P 19/12 (20060101)
C12P 19/00 (20060101)
C12P 19/18 (20060101)
C13K 13/00 (20060101)

Foreign Application Priority Data

1986-07-09 FR

Abstract

The invention relates to the field of biotechnology.It relates to a process for preparing a syrup, the dry extract of which includes a high content of isomaltose, which comprises treating an aqueous solution of sucrose with a mixture of the enzymes dextransucrase and dextranase at a temperature of 0° to 50° C. and at a pH in the range from 4.5 to 7, so as to obtain an aqueous syrup containing fructose, isomaltose, glucose and, possibly, isomaltotriose as the main constituents.The syrup obtained is a useful intermediate for the synthesis, in particular, of isomaltitol.

Other References

  • Karl L. Smiley et al., "A Simplified Method for Preparing Linear Isomalto-Oligosaccharides", Carbohydrate Research, 108 (1982) pp. 279-283
  • Chemical Abstracts, vol. 99, No. 19, Nov. 7, 1983, p. 488, Resume No. 156809a, Columbus, Ohio
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