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Lookup NU author(s): Shamas Tabraiz, Dr Burhan ShamuradORCiD, Dr Evangelos Petropoulos, Marcos Quintela-Baluja, Dr Alex Charlton, Dr Jan DolfingORCiD, Dr Paul Sallis
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
© 2021 Elsevier LtdA novel quorum quenching (QQ) strain, Acinetobacter guillouiae ST01, was isolated from a full-scale membrane bioreactor (MBR) and characterized for its QQ activities. Batch reactor studies at lab-scale showed that A. guillouiae ST01 exhibited higher QQ activity against acyl homoserine lactones (AHLs) with an oxo group compared to those without an oxo group. The organism was then inoculated (10%) in an MBR (Q-MBR) treating sewage over 48 days and was found to reduce quorum sensing (QS) activity by reducing AHL concentrations in the sludge and the biofilm of the Q-MBR. The concentration of polysaccharides was reduced up to 30% in both the biofilm and sludge relative to the control, whereas protein concentrations were reduced by 40% and 47% in the sludge and biofilm, respectively. The Q-MBR fouling rates were halved. These results indicate that A. guillouiae ST01 is a promising strain for biofouling reduction in MBR treating real wastewater.
Author(s): Tabraiz S, Shamurad B, Petropoulos E, Quintela-Baluja M, Charlton A, Dolfing J, Sallis PJ
Publication type: Article
Publication status: Published
Journal: Bioresource Technology
Year: 2021
Volume: 334
Print publication date: 01/08/2021
Online publication date: 01/05/2021
Acceptance date: 27/04/2021
Date deposited: 21/07/2021
ISSN (print): 0960-8524
ISSN (electronic): 1873-2976
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.biortech.2021.125242
DOI: 10.1016/j.biortech.2021.125242
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