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Diversity and effectiveness of tropical mangrove soil microflora on the degradation of polythene carry bags

dc.creatorKumar, Shristi
dc.creatorHatha, A. A. M.
dc.creatorChristi, K. S.
dc.date2007-05-07
dc.date.accessioned2016-05-03T15:24:54Z
dc.date.available2016-05-03T15:24:54Z
dc.identifierhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/5954
dc.identifier10.15517/rbt.v55i3-4.5954
dc.identifier.urihttp://hdl.handle.net/10669/25536
dc.descriptionThe diversity and load of heterotrophic bacteria and fungi associated with the mangrove soil from Suva, Fiji Islands, was determined by using the plate count method. The ability of the bacterial isolates to produce various hydrolytic enzymes such as amylase, gelatinase and lipase were determined using the plate assay. The heterotrophic bacterial load was considerably higher than the fungal load. There was a predominance of the gram positive genus, Bacillus. Other genera encountered included Staphylococcus, Micrococcus, Listeria and Vibrio. Their effectiveness on the degradation of commercial polythene carry bags made of high density polyethylene (HDPE) and low density polyethylene (LDPE) was studied over a period of eight weeks in the laboratory. Biodegradation was measured in terms of mean weight loss, which was nearly 5 % after a period of eight weeks. There was a significant increase in the bacterial load of the soil attached to class 2 (HDPE) polythene. After eight weeks of submergence in mangrove soil, soil attached to class 1 and class 3 polythene mostly had Bacillus (Staphylococcus predominated in class 2 polythene). While most of the isolates were capable of producing hydrolytic enzymes such as amylase and gelatinase, lipolytic activity was low. Class 2 HDPE suffered the greatest biodegradation.en-US
dc.formatapplication/pdf
dc.languageeng
dc.publisherUniversidad de Costa Ricaen-US
dc.rightsCopyright (c) 2014 International Journal of Tropical Biology and Conservationen-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 55 (3-4) September-December 2007en-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 55 (3-4) September-December 2007es-ES
dc.sourceRevista Biología Tropical; Vol. 55 (3-4) September-December 2007pt-PT
dc.source2215-2075
dc.source0034-7744
dc.source10.15517/rbt.v55i3-4
dc.titleDiversity and effectiveness of tropical mangrove soil microflora on the degradation of polythene carry bagsen-US
dc.titleDiversity and effectiveness of tropical mangrove soil microflora on the degradation of polythene carry bagses-ES
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.coverageCRCen-US


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