Prospecting exopolysaccharides produced by selected bacteria associated with marine organisms for biotechnological applications

P. Priyanka; A.B. Arun; C.C. Young; P.D. Rekha

doi:10.1007/s10118-015-1581-7

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Prospecting exopolysaccharides produced by selected bacteria associated with marine organisms for biotechnological applications

PAPER | Updated：2022-01-17

- Prospecting exopolysaccharides produced by selected bacteria associated with marine organisms for biotechnological applications
- Prospecting Exopolysaccharides Produced by Selected Bacteria Associated with Marine Organisms for Biotechnological Applications
- Chinese Journal of Polymer Science 2015年33卷第2期页码：236-244
- Affiliations：
  
  a.Yenepoya Research Centre, Yenepoya University, Deralakatte, Mangalore, Karnataka, India
  b.Department of Soil and Environment Sciences, National Chung-Hsing University, Taichung 402, China
- Author bio：
  
  **PD Rekha, E-mail: rekhapd@hotmail.com or dydirectoryrc@yenepoya.edu.in
- Funds：
  
  India and author Priyanka P acknowledges the Yenepoya University Junior research fellowship. The authors thank BRNS(2013/34/19/BRNS/1210)
- DOI：10.1007/s10118-015-1581-7
  中图分类号：
- 收稿：2014-04-03，
  
  修回：2014-07-28，
  
  录用：2014-09-01，
  
  纸质出版：2015-02
- Accepted：
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P. Priyanka, A.B. Arun, C.C. Young, 等. Prospecting exopolysaccharides produced by selected bacteria associated with marine organisms for biotechnological applications[J]. Chinese Journal of Polymer Science, 2015,33(2):236-244.

P. Priyanka, A.B. Arun, C.C. Young, et al. Prospecting Exopolysaccharides Produced by Selected Bacteria Associated with Marine Organisms for Biotechnological Applications[J]. Chinese Journal of Polymer Science, 2015, 33(2): 236-244.
P. Priyanka, A.B. Arun, C.C. Young, 等. Prospecting exopolysaccharides produced by selected bacteria associated with marine organisms for biotechnological applications[J]. Chinese Journal of Polymer Science, 2015,33(2):236-244. DOI： 10.1007/s10118-015-1581-7.

P. Priyanka, A.B. Arun, C.C. Young, et al. Prospecting Exopolysaccharides Produced by Selected Bacteria Associated with Marine Organisms for Biotechnological Applications[J]. Chinese Journal of Polymer Science, 2015, 33(2): 236-244. DOI： 10.1007/s10118-015-1581-7.

摘要

Abstract

In this study

bacteria associated with marine organisms were screened for the production of exopolysaccharides (EPSs) on MY media containing sea salts (2.5%-10%). Three selected isolates were identified as

Alteromonas

sp. PRIM-21

Nitratireductor

sp. PRIM-24 and

Enterobacter

sp. PRIM-26 using 16S rRNA gene sequencing. Optimization of the growth and EPS production kinetics in relation to incubation time were assessed. The purified EPS yield was 590

650 and 540 mg·L

-1

culture media respectively in

Alteromonas

sp. PRIM-21

Nitratireductor

sp. PRIM-24 and

Enterobacter

sp. PRIM-26. Biochemical and FTIR analyses revealed the presence of biologically important functional groups in the EPS produced by all the three isolates. The EPS produced by

Nitratireductor

sp. PRIM-24 and

Alteromonas

sp. PRIM-21 showed 2.0% sulfate content. These bacterial EPS also showed antioxidant and emulsifying activities and the EPS produced by

Enterobacter

sp.PRIM-26 showed significantly higher antioxidant activities in terms of superoxide (IC

0.33 mg·mL

-1

) and DPPH (IC

0.44 mg·mL

-1

) radical scavenging. It also showed higher emulsifying activities against selected hydrophobic substrates with EI

values above 60%. From the results of the study

it can be concluded that the isolated bacteria produce EPS that can be investigated in detail for biotechnological applications.

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