当前位置： SCI文献检索 > BIORESOURCE TECHNOLOGY期刊下所有文献 > Isolation, structural characterization and immunological activity of an exopolysaccharide produced by Bacillus licheniformis 8-37-0-1.

Isolation, structural characterization and immunological activity of an exopolysaccharide produced by Bacillus licheniformis 8-37-0-1.

Abstract：

:A strain of Bacillus licheniformis 8-37-0-1 with high exopolysaccharide (EPS) production ability was isolated and identified based on morphological and physiological characteristics and phylogenetic analysis of 16S rDNA sequences. A new type of EPS was isolated from the strain fermentation broth by enzymolysis, isopropanol precipitation, anion-exchange, and gel-filtration chromatography. The new EPS was determined as homogeneous, with a molecular weight of 2.826 x 10(4), as determined by High-Performance Size-Exclusion Chromatography Multi-Angle Laser Light Scattering analysis. Its structural characteristics were investigated and elucidated by methylation analysis, partial acid hydrolysis, gas-liquid chromatography mass spectrometry, Fourier transform infrared, and nuclear magnetic resonance spectroscopy. Based on obtained data, the EPS was found to be a levan containing a (2-->6)-linked backbone with a single beta-d-fructose at the C-1 position every seven residue, on average, along the main chain. Preliminary in vitro tests revealed that EPS could significantly stimulate the proliferation of spleen lymphocyte.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Liu C,Lu J,Lu L,Liu Y,Wang F,Xiao M

doi

10.1016/j.biortech.2010.01.151

subject

Has Abstract

pub_date

2010-07-01 00:00:00

pages

5528-33

issue

14

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(10)00317-2

journal_volume

101

pub_type

杂志文章

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