Title:
METHOD FOR PRODUCING XYLOOLIGOSACCHARIDE UNDER CATALYSIS OF XYLONIC ACID
Document Type and Number:
WIPO Patent Application WO/2021/082440
Kind Code:
A1
Abstract:
Disclosed in the present invention is a method for producing xylooligosaccharide under catalysis of a xylonic acid. The method for producing xylooligosaccharide using a xylonic acid comprises: mixing a xylan raw material and the xylonic acid, and performing heating and stirring to undergo a reaction to obtain xylooligosaccharide, in parts by mass, the xylan raw material being 1 part, and the xylonic acid being 5-12 parts. The method for producing xylooligosaccharide by fermentation under catalysis comprises: mixing xylose and bacteria to obtain a mixed liquid; adjusting the pH of the mixed liquid; stirring at a low temperature to undergo a biological oxidation reaction; and adding a xylan raw material, and performing heating and stirring to obtain xylooligosaccharide. The present invention utilizes the reaction of microbial whole cell biological oxidation of the xylose to the xylonic acid, and uses the produced xylonic acid as a catalyst; compared with acetic acid and other inorganic acids, the produced glycan is not easily excessively degraded, and has a high yield and less by-product xylose furfural.
More Like This:
| WO/2015/066492 | METHODS OF SACCHARIFYING AND FERMENTING A CELLULOSIC MATERIAL |
| WO/2013/137151 | METHOD FOR PRODUCING GLUCOSE |
| WO/1998/014270 | HYDROLYSIS AND FRACTIONATION OF LIGNOCELLULOSIC BIOMASS |
Inventors:
XU YONG (CN)
ZHOU XIN (CN)
ZHOU XIN (CN)
Application Number:
PCT/CN2020/093889
Publication Date:
May 06, 2021
Filing Date:
June 02, 2020
Export Citation:
Assignee:
UNIV NANJING FORESTRY (CN)
International Classes:
C12P19/02; C12P19/00; C12P19/04; C12P19/12; C12R1/01
Foreign References:
| CN110616238A | 2019-12-27 | |||
| CN102676608A | 2012-09-19 | |||
| CN106187731A | 2016-12-07 | |||
| CN108707632A | 2018-10-26 | |||
| CN106701844A | 2017-05-24 | |||
| CN110305921A | 2019-10-08 |
Other References:
ZHOU XIN, XU YONG: "Eco-friendly consolidated process for co-production of xylooligosaccharides and fermentable sugars using self-providing xylonic acid as key pretreatment catalyst.", BIOTECHNOLOGY FOR BIOFUELS, vol. 12, 272, 18 November 2019 (2019-11-18), pages 1 - 10, XP055809129, ISSN: 1754-6834, DOI: 10.1186/s13068-019-1614-5
ZHANG HONGYU: "Acetic Acid Prehydrolysis, Enzyme Hydrolysis of Lignocellulose for Xylooligosaccharides and Fermentable Sugars Production", CHINA MASTER’S THESES FULL-TEXT DATABASE, no. 3, 1 June 2018 (2018-06-01), pages 1 - 64, XP055809140, ISSN: 1674-0246
ZHANG HONGYU: "Acetic Acid Prehydrolysis, Enzyme Hydrolysis of Lignocellulose for Xylooligosaccharides and Fermentable Sugars Production", CHINA MASTER’S THESES FULL-TEXT DATABASE, no. 3, 1 June 2018 (2018-06-01), pages 1 - 64, XP055809140, ISSN: 1674-0246
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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