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A kind of microbacterium xl1 and its application in producing levan fructan

A technology of microbacteria and fructan, applied in the field of bioengineering, to achieve the effects of easy control of fermentation conditions, high carbon source utilization, and simple operation

Active Publication Date: 2022-05-24
JIANGSU OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that the carbon source utilization rate of levan fructan produced by the existing strains still needs to be improved

Method used

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  • A kind of microbacterium xl1 and its application in producing levan fructan
  • A kind of microbacterium xl1 and its application in producing levan fructan
  • A kind of microbacterium xl1 and its application in producing levan fructan

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Embodiment Construction

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] The present invention will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of the present invention by those skilled in the art.

[0044] The inoculation amount involved in the present invention...

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Abstract

The invention relates to the technical field of bioengineering, in particular to a microbacterium XL1 and its application in producing Levan fructan. The invention provides a bacterial strain whose preservation number is CCTCC NO: M2021423, and discloses the application of the strain to produce Levan fructan. The invention also provides a specific method for screening and cultivating the strain to produce Levan fructan. And after several tests, the optimal culture condition for the production of Levan fructan by the strain is provided, so that the utilization rate of carbon source for producing Levan fructan exceeds 64%.

Description

technical field [0001] The invention relates to the technical field of bioengineering, in particular to a microbacterium XL1 and its application in producing Levan fructan. Background technique [0002] Fructan is a homopolysaccharide composed of β-2,6 bonds and β-2,1 bonds connected to fructofuranosyl groups, and is a widely distributed biopolymer in nature. Depending on the linkage, there are two types of fructans: inulin and levan. Inulin is linked by β-2,1 glycosidic bonds, usually derived from plants, and is used as a storage sugar in Compositae and Poaceae, so inulin-type fructans can be isolated from natural plants. Levan is a fructan composed of β-2,6 glycosidic bonds connecting D-fructofuranose residues as the main chain and some β-2,1 glycosidic bonds as branch points. It is usually derived from microorganisms. Bacterial fructans are all levan-type fructans. [0003] Levan-type fructan has anti-tumor, anti-diabetic, hypolipidemic, immune-enhancing and increasing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20C12P19/04C12R1/01
CPCC12N1/20C12P19/04
Inventor 徐淋香吴丹张岩殷先伟刘楠楠王震魏真徐海洋
Owner JIANGSU OCEAN UNIV
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