| Literature DB >> 19056259 |
C L Xu1, Y Z Wang, M L Jin, X Q Yang.
Abstract
The tolerant-selenium exopolysaccharide-producing bacterial strain Enterobacter cloacae Z0206 was batch cultured in PDA medium containing optimal concentration of sodium selenite. Selenium was accumulated efficiently in Enterobacter cloacae Z0206 during cultivation with selenium. Inorganic selenite could be transformed into organic forms. Selenium-enriched exopolysaccharide (Se-ECZ-EPS-1) was purified from the fermentation liquid. Selenium content of Se-ECZ-EPS-1 was 12.962microg/g. Se-ECZ-EPS-1 with Mw of 29,300Ka was composed of Glc, Gal and Mann with molar ratio of 8.530:0.061:0.706. Administration of Se-ECZ-EPS-1 to cyclophosphamide (CP)-exposed animals resulted in improvement of cellular and humoral immune responses. These findings indicated that Se-ECZ-EPS-1 may act as potent immunomodulatory agents.Entities:
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Year: 2008 PMID： 19056259 DOI： 10.1016/j.biortech.2008.10.037
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642