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Title:
METHOD FOR REMOVING IMPURITIES IN XYLOSE MOTHER LIQUOR
Document Type and Number:
WIPO Patent Application WO/2020/098659
Kind Code:
A1
Abstract:
The present invention relates to a method for removing impurities in a xylose mother liquor. A xylose mother liquor produced during xylose production is used as a raw material, and the xylose mother liquor is pretreated by using a lytic polysaccharide monooxygenase (LPMO) and a copper ethylenediamine solution, so as to greatly reduce the viscosity of the xylose mother liquor; then, the xylose mother liquor is treated by a carbonation process to adjust the pH to acidic, thereby removing colloidal impurities to purify the xylose mother liquor, and thus, the xylose mother liquor can smoothly pass through a chromatographic separation device to obtain high-purity xylose. The present invention achieves the purpose of removing impurities in a xylose mother liquor by using a glycosyl hydrolase in combination with a carbonation process, thereby reducing the production costs and improving the utilization of the xylose mother liquor, and effectively removes colloidal impurities in the xylose mother liquor, so that the xylose mother liquor smoothly passes through a chromatographic separation device to obtain high-purity xylose, thereby improving the utilization value of the xylose mother liquor.

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Inventors:
LIAO CHENGJUN (CN)
ZHANG JINJIAN (CN)
LI MIAN (US)
WANG XIUXIU (CN)
ZHENG YI (CN)
CHEN DESHUI (CN)
CHENG XINPING (CN)
AN YANLONG (CN)
Application Number:
PCT/CN2019/117716
Publication Date:
May 22, 2020
Filing Date:
November 12, 2019
Export Citation:
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Assignee:
ZHEJIANG HUAKANG PHARMACEUTICAL CO LTD (CN)
International Classes:
C07H3/02; C07H1/08
Foreign References:
CN109384819A2019-02-26
CN1846523A2006-10-18
CN102964393A2013-03-13
Other References:
SUN, . XIAOBAO ET ET AL.: "Progress in Lytic Polysaccharide Monooxygenase", CHINESE JOURNAL OF BIOTECHNOLOGY, vol. 34, no. 2, 25 February 2018 (2018-02-25), pages 178 - 179, ISSN: 1000-3061
WANG, PU ET AL.: "Xylose Mother Liquor Microorganisms Remove Glucose and Recover Xylose", FOOD SCIENCE, vol. 23, no. 7, 31 December 2002 (2002-12-31), pages 73 - 74
Attorney, Agent or Firm:
HANGZHOU AOCHUANG INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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