公开(公告)号：US20250034512A1

公开(公告)日：2025-01-30

申请号：US18275380

申请日：2023-03-30

Applicant: QILU UNIVERSITY OF TECHNOLOGY (SHANDONG ACADEMY OF SCIENCES)

Inventor： Lujiang HAO ,  Yuhao JU ,  Wei WANG ,  Kai SHAN ,  Xiaofei ZHANG ,  Ruiwen CAO ,  Nan LIU ,  Gangrui ZHANG ,  Xingbao WANG

IPC: C12N1/20 ,  B01D15/36 ,  C12P19/04 ,  C12R1/01

Abstract: The present disclosure provides a Pseudoalteromonas agarivorans strain and a preparation method of an exopolysaccharide (EPS), and relates to the technical field of functional bacteria. In the present disclosure, the Pseudoalteromonas agarivorans strain HJWL2022 has a deposit number of CGMCC No. 26272. Fermentation, centrifugation, alcohol precipitation, protein removal, purification, and drying are conducted with the strain HJWL2022 to obtain a pure EPS. A proportion of a monosaccharide component in the product EPS is controlled by precisely controlling a pH value in a fermentation environment of the strain HJWL2022. Targeted control of a monosaccharide ratio is achieved to enhance a certain biological activity by adjusting fermentation conditions to change a composition of a bacterial EPS.