Growth kinetics and biodeterioration of polypropylene microplastics by Bacillus sp. and Rhodococcus sp. isolated from mangrove sediment.

Autor: Auta HS; Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia; Department of Microbiology, Federal University of Technology, Minna, Nigeria. Electronic address: helen.shnada@futminna.edu.ng., Emenike CU; Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia; Centre for Research in Waste Management, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia., Jayanthi B; Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia., Fauziah SH; Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia; Centre for Research in Waste Management, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2018 Feb; Vol. 127, pp. 15-21. Date of Electronic Publication: 2017 Nov 23.
DOI: 10.1016/j.marpolbul.2017.11.036
Abstrakt: Interest in the biodegradation of microplastics is due to their ubiquitous distribution, availability, high persistence in the environment and deleterious impact on marine biota. The present study evaluates the growth response and mechanism of polypropylene (PP) degradation by Bacillus sp. strain 27 and Rhodococcus sp. strain 36 isolated from mangrove sediments upon exposure to PP microplastics. Both bacteria strains were able to utilise PP microplastic for growth as confirmed by the reduction of the polymer mass. The weight loss was 6.4% by Rhodococcus sp. strain 36 and 4.0% by Bacillus sp. strain 27 after 40days of incubation. PP biodegradation was further confirmed using Fourier-transform infrared spectroscopy and scanning electron microscopy analyses, which revealed structural and morphological changes in the PP microplastics with microbial treatment. These analyses showed that the isolates can colonise, modify and utilise PP microplastics as carbon source.
(Copyright © 2017 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: