Biodegradability of Polythene and Plastic By The Help of Microorganism: A Way for Brighter Future

Priyanka, N.; Archana, T. S.

doi:10.4172/2161-0525.1000111

Cited by 80 publications

(48 citation statements)

References 13 publications

(15 reference statements)

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“…Kathiresan (2003) reported biodegradation of plastics and polyethylene bags by microbes present in soil which showed their active association. Priyanka and Archana (2011) conducted a comparative analysis between the biodegradation of polythene and plastic by five different types of soil sample collected from different sources. Among various species of bacteria and fungus, Bacillus subtilis, A. niger, Aspergillus nidulance, Aspergillus flavus, Aspregillus glaucus, Penicillium, Pseudomonas, Staphylococcus aureus, Streptococcus lactis, Proteus vulgaris, Micrococcus were found to degrade polythene and plastic efficiently (Abrusci et al 2011;Aswale and Ade 2008;Kathiresan 2003;Nanda et al 2010;Reddy 2008).…”

Section: Identification Of Fungal Isolatementioning

confidence: 99%

Biodegradation of thermally treated low density polyethylene by fungus Rhizopus oryzae NS 5

et al. 2017

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Polythene is considered as one of the important object used in daily life. Being versatile in nature and resistant to microbial attack, they effectively cause environmental pollution. In the present study, biodegradation of low-density polyethylene (LDPE) have been performed using fungal lab isolate Rhizopus oryzae NS5. Lab isolate fungal strain capable of adhering to LDPE surface was used for the biodegradation of LDPE. This strain was identified as Rhizopus oryzae NS5 (Accession No. KT160362). Fungal growth was observed on the surface of the polyethylene when cultured in potato dextrose broth at 30°C and 120 rpm, for 1 month. LDPE film was characterized before and after incubation by Fourier transform infrared spectroscopy, scanning electron microscopy, atomic force microscopy and universal tensile machine. About 8.4 ± 3% decrease (gravimetrically) in weight and 60% reduction in tensile strength of polyethylene was observed. Scanning electron microscope analysis showed hyphal penetration and degradation on the surface of polyethylene. Atomic force microscope analysis showed increased surface roughness after treatment with fungal isolate. A thick network of fungal hyphae forming a biofilm was also observed on the surface of the polyethylene pieces. Present study shows the potential of Rhizopus oryzae NS5 in polyethylene degradation in eco friendly and sustainable manner.

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Section: Identification Of Fungal Isolatementioning

confidence: 99%

Biodegradation of thermally treated low density polyethylene by fungus Rhizopus oryzae NS 5

et al. 2017

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“…In this study, the AFM images showed the formation of cavities (dark areas) and fungal biofilms (light cloud-like areas) on PC plastic surfaces. This might be due to formation of biofilm on the polymer surface to enable the microbes to efficiently utilize the non-soluble substrate by the compounds secreted extracellularly that may break the complex molecular structure of polymers (Priyanka and Archana 2011;Shah et al 2007). …”

Section: Resultsmentioning

confidence: 99%

Polycarbonate biodegradation by isolated molds using clear-zone and atomic force microscopic methods

Areﬁan

Zia

Tahmourespour

et al. 2013

Int. J. Environ. Sci. Technol.

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The accumulation of dry waste containing synthetic polymers due to their resistance to microorganisms and other environmental factors has posed some serious problems to the environment in recent years. On the other hand, plastics constitute the foundations of economy as they are widely used in agriculture, constructions, packaging, health care and also medicine. The aim of this research was to investigate the role of different isolated fungi in the degradation of polycarbonate polymers. For this purpose, sampling was done using the garden soil and waste leachate from Isfahan Waste Management Organization. Samples were enriched in the liquid mineral salt medium supplemented with polycarbonate and then were transferred to the same medium solidified with agar to isolate and identify different fungi. Finally, their biodegradation activity was investigated with the help of clearzone and atomic force microscopic (AFM) techniques, and also lipase and amylase production was tested. Among 15 isolated genera of mold fungi, Fusarium, Ulocladium, Chrysosporium and Penicillium showed biodegradation activity. According to the diameter of clear zone around the fungal colonies and also AFM results, the highest rate of degradation was related to Fusarium. Lipase activity of all isolated fungi was positive, but amylase activity of Ulocladium was negative. It can be concluded that some fungal strains such as Fusarium can be used for the biodegradation of plastic materials as it leads to a very eco-friendly biodegradation process.

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“…Aerobic bacteria use oxygen as an electron acceptor, and break down organic chemicals into smaller organic compounds, often producing CO 2 and water as the final product which denotes high oxygen demand in salt water due the effect of the salt added while low in fresh water because the dissolved oxygen have been used by the organisms for biochemical processes which is also responsible for the slow response of the materials placed in this environment to changes as reported by Priyanka et al (2011), that in anaerobic condition whether a material is biodegradable makes little difference: biodegradable matter usually does not decay, because of the lack of oxygen required by the microorganisms. This observation is also in correlation with the work of Xunchi and Zhao, (2005) who reported that when the re-aeration rate is low, the dissolved oxygen cannot be supplied in time so that the dissolved oxygen concentration decreases gradually, resulting in the rate of biodegradation decreasing.…”

Section: Discussionmentioning

confidence: 99%

Environmental Effect on Biodegradability of Plastic and Paper Bags

O.¹,

Alo²,

Ugah³

et al. 2014

IOSRJESTFT

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Biodegradability of Polythene and Plastic By The Help of Microorganism: A Way for Brighter Future

Cited by 80 publications

References 13 publications

Biodegradation of thermally treated low density polyethylene by fungus Rhizopus oryzae NS 5

Biodegradation of thermally treated low density polyethylene by fungus Rhizopus oryzae NS 5

Polycarbonate biodegradation by isolated molds using clear-zone and atomic force microscopic methods

Environmental Effect on Biodegradability of Plastic and Paper Bags

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