Biofouling control by quorum sensing inhibition and its dependence on membrane surface

Mijin Kim; Sangyoup Lee; Hee Deung Park; Suing Il Choi; Seungkwan Hong

doi:10.2166/wst.2012.307

Biofouling control by quorum sensing inhibition and its dependence on membrane surface

Mijin Kim, Sangyoup Lee, Hee Deung Park, Suing Il Choi, Seungkwan Hong

School of Civil, Environmental and Architectural Engineering

Research output: Contribution to journal › Article

21 Citations (Scopus)

Abstract

Biofouling control by quorum sensing (QS) inhibition and the influence of membrane surface characteristics on biofilm formation and QS inhibition were investigated. Pseudomonas putida isolated from the bio-fouled reverse osmosis (RO) membranes in a real plant was used. Acylase was chosen as a model QS inhibitor. Bacteria on the membrane coupons were quantified with the heterotrophic plate count method. Cell distribution was imaged by a confocal laser scanning microscope. Results showed that biofilm formation on the membrane was reduced by acylase as it inhibits the activity of N-acylhomoserine lactone (AHL) which is a signal molecule of QS. It was also shown that membrane surface characteristics were influential factors affecting bacterial adhesion, biofilm formation, and QS inhibition.

Original language	English
Pages (from-to)	1424-1430
Number of pages	7
Journal	Water Science and Technology
Volume	66
Issue number	7
DOIs	https://doi.org/10.2166/wst.2012.307
Publication status	Published - 2012

Keywords

Acylase
Biofouling
Pseudomonas putida
Quorum sensing
Reverse osmosis (RO) membrane

ASJC Scopus subject areas

Environmental Engineering
Water Science and Technology

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abstract = "Biofouling control by quorum sensing (QS) inhibition and the influence of membrane surface characteristics on biofilm formation and QS inhibition were investigated. Pseudomonas putida isolated from the bio-fouled reverse osmosis (RO) membranes in a real plant was used. Acylase was chosen as a model QS inhibitor. Bacteria on the membrane coupons were quantified with the heterotrophic plate count method. Cell distribution was imaged by a confocal laser scanning microscope. Results showed that biofilm formation on the membrane was reduced by acylase as it inhibits the activity of N-acylhomoserine lactone (AHL) which is a signal molecule of QS. It was also shown that membrane surface characteristics were influential factors affecting bacterial adhesion, biofilm formation, and QS inhibition.",

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AU - Kim, Mijin

AU - Lee, Sangyoup

AU - Park, Hee Deung

AU - Choi, Suing Il

AU - Hong, Seungkwan

PY - 2012

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AB - Biofouling control by quorum sensing (QS) inhibition and the influence of membrane surface characteristics on biofilm formation and QS inhibition were investigated. Pseudomonas putida isolated from the bio-fouled reverse osmosis (RO) membranes in a real plant was used. Acylase was chosen as a model QS inhibitor. Bacteria on the membrane coupons were quantified with the heterotrophic plate count method. Cell distribution was imaged by a confocal laser scanning microscope. Results showed that biofilm formation on the membrane was reduced by acylase as it inhibits the activity of N-acylhomoserine lactone (AHL) which is a signal molecule of QS. It was also shown that membrane surface characteristics were influential factors affecting bacterial adhesion, biofilm formation, and QS inhibition.

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