Degradation of polyethylene by Penicillium simplicissimum isolated from local dumpsite of Shivamogga district

Sowmya, H. V.; Ramalingappa,; Krishnappa, M.; Thippeswamy, B

doi:10.1007/s10668-014-9571-4

Cited by 118 publications

(43 citation statements)

References 21 publications

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“…In regards to MnP and LiP enzyme, no reports describe their mechanisms in LDPE biodeterioration [ 18 ]. Therefore, we assume this process might occur in a similar manner as for lignin biotransformation, where these enzymes employ H 2 O 2 to catalyze phenolic fraction oxidation, non-phenolic and aromatic rings respectively [ 74 ].…”

Section: Discussionmentioning

confidence: 99%

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Biodeterioration of plasma pretreated LDPE sheets by Pleurotus ostreatus

et al. 2018

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Low-density polyethylene (LDPE) waste generates an environmental impact. To achieve the most suitable option for their degradation, it is necessary to implement chemical, physical and biological treatments, as well as combining procedures. Best treatment was prognosticated by Plackett-Burman Experimental Design (PB), evaluating five factors with two levels (0.25 mM or 1.0 gL-1 glucose, 1.0 or 2.0 mM CuSO4, 0.1 or 0.2 mM ABTS [2, 20-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)], pH 4.5 ± 0.2 or 7.0 ± 0.2 and 30 or 90 day incubation), which was reproduced for 150 days. Therefore, PB identified a sequential treatment (plasma followed by fungus) for partial LDPE biodeterioration. Sheets were pretreated with glow discharge plasma (O2, 3.0 x 10−2 mbar, 600 V, 6 min.), followed by Pleurotus ostreatus biodeterioration. Fungus growth, colonization percentage, and pigment generation followed. Laccase (Lac), manganese peroxidase (MnP) and lignin peroxidase (LiP) activities were appraised. Additionally, contact angle (CA), functional group presence and changes and carbonyl and vinyl indices (Fourier transformed infrared spectroscopy) were evaluated. LDPE surface changes were assessed by Young’s modulus, yield strength, scanning electronic microscopy (SEM), Fourier transformed infrared spectroscopy (FTIR) and atomic force microscopy (AFM). Plasma discharge increased hydrophilicity, decreasing CA by 76.57% and increasing surface roughness by 99.81%. P. ostreatus colonization was 88.72% in 150 days in comparison with untreated LDPE (45.55%). After this treatment carbonyl groups (C = O), C = C insaturations, high hydrophilicity CA (16 ± 4) °, and low surface roughness (7 ± 2) nm were observed. However, the highest Lac and LiP activities were detected after 30 days (Lac: 2.817 U Lac g-1 and LiP: 70.755 U LiP g-1). In addition, highest MnP activity was observed at day 120 (1.097 U MnP g-1) only for P. ostreatus treated LDPE. Plasma favored P. ostreatus adsorption, adherence, growth and colonization (88.72%), as well as partial LDPE biodeterioration, supported by increased hydrophilicity and presence of specific functional chemical groups. The approximate 27% changes in LDPE physical properties support its biodeterioration.

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Section: Discussionmentioning

confidence: 99%

“…In addition, P . ostreatus makes part of white rot fungi producing enzymes, such as manganese peroxidase (MnP, 1.11.1.13), [ 18 ] and laccases (Lac, EC. 1.10.3.2), [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Biodeterioration of plasma pretreated LDPE sheets by Pleurotus ostreatus

et al. 2018

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“…A surface sterilized LDPE sheet (1.5 cm x 1.5 cm) was inoculated into each culture flask, cultures were prepared in triplicates. Cultures were incubated at room temperature (26 ± 2 ° C) at rotary shaker (120 rpm) for 4 weeks [13].…”

Section: Screening Of Bacterial Isolates and Biodegradation Test Of Ldpementioning

confidence: 99%

Potential of bacteria isolated from landfill soil in degrading low density polyethylene plastic

Munir

Sipayung

Priyani

et al. 2018

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. Plastic is an important material and used for many purposes. It is returned to the environment as a waste which is recently considered as the second largest solid waste. The persistency of plastic in the environment has been attracted researchers from a different point of view. The study of the degradation of plastic using bacteria isolated from local landfill soil was conducted. Low density polyethylene (LDPE) plastic was used as tested material. Potential isolates were obtained by culturing the candidates in mineral salt medium broth containing LDPE powder. Two of ten exhibited better growth response in the selection media and were used in degradation study. Results showed that isolate SP2 and SP4 reduced the weight of LDPE film significantly to a weight loss of 10.16% and 12.06%, respectively after four weeks of incubation. Scanning electron micrograph analyses showed the surface of LDPE changed compared to the untreated film. It looked rough and cracked, and bacteria cells attached to the surface was also noticed. Fourier transform infrared spectroscopy analyses confirmed the degradation of LDPE film. These results indicated that bacteria isolated from landfill might play an important role in degrading plastic material in the landfill.

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“…These insoluble recalcitrant polymers take many years to be naturally degraded in the environment. This problem encourages plastic waste pollution that threatens many living things, including humans (10).…”

Section: Introductionmentioning

confidence: 99%

“…Those released gases cause lung diseases and cancer (11). As plastics waste is a pollutant polluting the land, air, and water ecosystem (12), threatening various living things (10), therefore the appropriate processing method of plastic waste is necessarily needed to be carried out. The application of reuse, reduce, and recycle is now widely applied to prevent the problem caused by plastics waste.…”

Section: Introductionmentioning

confidence: 99%

A Review: Plastics Waste Biodegradation Using Plastics-Degrading Bacteria

2020

J. Environ. Treat. Tech.

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Plastic is a synthetic polymer that is widely used in almost every field of life. The massive use of this synthetic polymer has led to the accumulation of this polymer in the environment thus polluting the environment. The general techniques in preventing plastic waste as landfill, incineration, recycling are considered less effective as they release some hazardous materials to the environment. Thus, the appropriate technique is needed to overcome this problem. Biodegradation is an enzymatic degradation involving some microorganisms including bacteria. This technique can be used to prevent the plastic waste problem. Plastic waste biodegradation occurred through several steps, including biodeterioration, depolymerization, and assimilation. Within this process, bacteria will secrete many enzymes that will degrade and convert plastic polymers into microbial biomass and gases. Thus, this process has fewer even no side effect.

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Degradation of polyethylene by Penicillium simplicissimum isolated from local dumpsite of Shivamogga district

Cited by 118 publications

References 21 publications

Biodeterioration of plasma pretreated LDPE sheets by Pleurotus ostreatus

Biodeterioration of plasma pretreated LDPE sheets by Pleurotus ostreatus

Potential of bacteria isolated from landfill soil in degrading low density polyethylene plastic

A Review: Plastics Waste Biodegradation Using Plastics-Degrading Bacteria

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