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Journals
Oceanological and Hydrobiological Studies
Volume 45 (2016): Issue 1 (March 2016)
Open Access
Antibiofilm and antifouling activities of extracellular polymeric substances isolated from the bacteria associated with marine gastropod
Turbo
sp
Nadarajan Viju
Nadarajan Viju
,
Sathyaneson Satheesh
Sathyaneson Satheesh
and
Stanislaus Mary Josephine Punitha
Stanislaus Mary Josephine Punitha
| Mar 10, 2016
Oceanological and Hydrobiological Studies
Volume 45 (2016): Issue 1 (March 2016)
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Article Category:
Original research paper
Published Online:
Mar 10, 2016
Page range:
11 - 19
Received:
Apr 12, 2015
Accepted:
Aug 17, 2015
DOI:
https://doi.org/10.1515/ohs-2016-0002
Keywords
biofouling
,
surface associated bacteria
,
extracellular polymeric substance
,
antimicrobial activity
,
antibiofilm activity
,
antifouling activity
© Faculty of Oceanography and Geography, University of Gdañsk, Poland. All rights reserved.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Figure 1.
The growth inhibition effect of EPS on the growth biofilm-forming bacteria Alteromonas sp. and Pseudomonas sp.
Figure 2.
The antibiofilm effect of EPS against biofilm-forming bacteria using the microtiter plate assay
Figure 3.
The antifouling effect of antifouling coating developed by incorporating the bacterial EPS into epoxy primer along with epoxy resin and hardener. (A) Recruitment of marine foulers on the reference and plates coated with bacterial EPS submerged in the marine environment for a period of 50 days. (B) The plot shows the inhibiting effect of antifouling coatings.
Figure 4.
FT-IR spectrum of bioactive EPS isolated from the bacterial strain KT1
Figure 5.
Identification of the strain using the 16S rRNA gene sequencing. The 16S rRNA was aligned and used to construct the neighbour-joining phylogenetic tree and it was identified as Pseudomonas aeruginosa.
Antibacterial activity of EPS isolated from the marine bacteria associated with Turbo sp. against biofilm-forming bacteria
S. No
Bioflim bacteria
EPS
- EPS of surface associated marine bacteria and their zone of inhibition against test bacteria
(mm)
K1
K2
K7
K8
K9
1
Alteromonas sp
12
9
9
12
10
2
Pseudomonas sp
13
10
9
10
7