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Nademo ZM, Shibeshi NT, Gemeda MT. Isolation and screening of low-density polyethylene (LDPE) bags degrading bacteria from Addis Ababa municipal solid waste disposal site “Koshe”. ANN MICROBIOL 2023. [DOI: 10.1186/s13213-023-01711-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Abstract
Purpose
This study aims to screen bacterial isolates from the Addis Ababa municipal solid waste dumping site (Koshe) for the biodegradation of low-density polyethylene bags and analyzes their efficiency in degrading plastic bags.
Methods
In this study, low-density polyethylene bag-degrading bacteria were isolated from the Koshe municipal solid waste disposal area in Addis Ababa, Ethiopia. Screening of isolates for low-density polyethylene bag biodegradation was carried out using a clear zone method. Additionally, the efficiency of the isolates for low-density polyethylene biodegradation was evaluated using the weight loss method, scanning electron microscopy analysis, and Fourier transform infrared analysis. Finally, molecular identification of potential low-density polyethylene degrader bacterial isolates was done by 16S rDNA sequencing.
Results
Isolates KS35, KS14, and KS119 resulted in significant weight loss of low-density polyethylene film (42.87 ± 1.91%, 37.2 ± 3.06%, and 23.87 ± 0.11% weight loss, respectively). These isolates were selected for further biodegradation study using scanning electron microscopy and Fourier transform infrared analysis. Scanning electron microscopy analysis shows the formation of pores, pits, and distortion of the plastic surface. Fourier transform infrared analysis indicates the appearance of new peaks at the surface of low-density polyethylene films. Phylogenetic analysis of the three potential bacterial isolates was also carried out, and the result indicates that the sequence of isolate KS35 had 99% similarity with sequences of Methylobacterium radiotolerans MN525302. Isolate KS119 had 100% similarity with Methylobacterium fujisawaense KT720189, and the sequence of isolate KS14 had 99% similarity with species of Lysinibacillus fusiformis.
Conclusions
Weight loss, scanning electron microscopy analysis, and Fourier transform infrared analysis results show that isolates KS35, KS14, and KS119 have high potential in degrading low-density polyethylene bags.
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Elghnam SM, Abdelalim YH, Hamad MA. Important modifications in dielectric properties of LDPE after contact with some foods. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2022. [DOI: 10.1080/16583655.2022.2136911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- Sameh M. Elghnam
- Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Youssef H. Abdelalim
- Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Mahmoud A. Hamad
- Basic Science Department, Higher Institute of Engineering and Technology, Alexandria, Egypt
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Lomwongsopon P, Varrone C. Critical Review on the Progress of Plastic Bioupcycling Technology as a Potential Solution for Sustainable Plastic Waste Management. Polymers (Basel) 2022; 14:polym14224996. [PMID: 36433123 PMCID: PMC9692586 DOI: 10.3390/polym14224996] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 11/19/2022] Open
Abstract
Plastic production worldwide has doubled in the last two decades and is expected to reach a four-fold increase by 2050. The durability of plastic makes them a perfect material for many applications, but it is also a key limitation to their end-of-life management. The current plastic lifecycle is far from circular, with only 13% being collected for recycling and 9% being successfully recycled, indicating the failure of current recycling technology. The remaining plastic waste streams are thus incinerated, landfilled, or worse, mismanaged, leading to them leaking into the environment. To promote plastic circularity, keeping material in the loop is a priority and represents a more sustainable solution. This can be achieved through the reuse of plastic items, or by using plastic waste as a resource for new materials, instead of discarding them as waste. As the discovery of plastic-degrading/utilizing microorganisms and enzymes has been extensively reported recently, the possibility of developing biological plastic upcycling processes is opening up. An increasing amount of studies have investigated the use of plastic as a carbon source for biotechnological processes to produce high-value compounds such as bioplastics, biochemicals, and biosurfactants. In the current review, the advancements in fossil-based plastic bio- and thermochemical upcycling technologies are presented and critically discussed. In particular, we highlight the developed (bio)depolymerization coupled with bioconversion/fermentation processes to obtain industrially valuable products. This review is expected to contribute to the future development and scale-up of effective plastic bioupcycling processes that can act as a drive to increase waste removal from the environment and valorize post-consumer plastic streams, thus accelerating the implementation of a circular (plastic) economy.
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Perera TWNK, Weerasinghe R, Attanayake RN, Paranagama PA. Biodeterioration of low density polyethylene by mangrove associated endolichenic fungi and their enzymatic regimes. Lett Appl Microbiol 2022; 75:1526-1537. [PMID: 36000184 DOI: 10.1111/lam.13819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 06/02/2022] [Accepted: 08/20/2022] [Indexed: 11/26/2022]
Abstract
Fungal involvement in biodeterioration of Low Density Polyethylene (LDPE) has received a great attention in recent years. Among diverse groups of fungi, Endolichenic Fungi (ELF) are adapted to thrive in resource limited conditions. Present study was designed to investigate the potential of mangrove associated ELF, in biodeterioration of LDPE and to quantify key-depolymerizing enzymes. A total of 31 ELF species, isolated from 22 lichens of mangrove ecosystems in Negombo lagoon, Sri Lanka were identified using DNA barcoding techniques. ELF were inoculated into mineral salt medium, containing LDPE strips and incubated at 28±2°C, for 21 days, under laboratory conditions. After incubation, biodeterioration was monitored based on percent reductions in weights and tensile properties, increments in degree of water absorption, changes in peaks of Infrared spectra and surface erosions using Scanning Electron Microscopy. Out of 31 species, Chaetomium globosum, Daldinia eschscholtzii, Neofusicoccum occulatum, Phanerochaete chrysosporium, Schizophyllum commune and Xylaria feejeensis showed significant changes. Production of depolymerizing enzymes by these species, were assayed qualitatively using plate-based methods and quantitatively by mass level enzyme production. Among them Phanerochaete chrysosporium showed the highest enzyme activities as (9.69±0.04)x10-3 , (1.96±0.01)x10-3 , (5.73±0.03)x10-3 , (0.88±0.01), (0.64±0.06), (1.43±0.01) U ml-1 for laccase, lignin peroxidase, manganese peroxidase, amylase, lipase and esterase, respectively.
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Affiliation(s)
- T W N K Perera
- Departmment of Microbiology, Faculty of Science, University of Kelaniya, Sri Lanka
| | - R Weerasinghe
- Departmment of Chemistry, Faculty of Science, University of Kelaniya, Sri Lanka
| | - R N Attanayake
- Department of Plant & Molecular Biology, Faculty of Science, University of Kelaniya, Sri Lanka
| | - P A Paranagama
- Departmment of Chemistry, Faculty of Science, University of Kelaniya, Sri Lanka
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Effect of Quinoline on the Phospholipid Profile of Curvularia lunata and Its Microbial Detoxification. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27072081. [PMID: 35408479 PMCID: PMC9000216 DOI: 10.3390/molecules27072081] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/20/2022] [Accepted: 03/21/2022] [Indexed: 12/13/2022]
Abstract
Quinoline is an N-heterocyclic compound commonly found in wastewater, especially that derived from coal processing, chemical, and pharmaceutical industries. In the present study, the microscopic fungus Curvularia lunata IM 4417, which is known to degrade various xenobiotics, was used. The aim of the research was to study the elimination of quinoline and its influence on fungal phospholipids, which are considered to be excellent indicators of environmental monitoring. Quinoline biodegradation products and phospholipid contents were analyzed using gas chromatography–mass spectrometry and liquid chromatography–tandem mass spectrometry. C. lunata IM 4417 degraded quinoline, which led to the formation of conjugates of glucose with hydroxylated derivatives of the compound. Toxicity tests (Artoxkit M and Microtox assay) indicated that the elimination of lower concentrations of quinoline was efficient and led to a reduction in sample toxicity. The presence of quinoline also significantly affected the profile of fatty acids and phospholipids. The addition of quinoline to a culture of C. lunata IM 4417 caused an increase in the content of phosphatidylcholine (PC) and a decrease in the amount of phosphatidylethanolamine (PE), two major structural lipids. Additionally, decreases in the contents of phosphatidylinositol (PI) and phosphatidylserine (PS), which are responsible for tolerance to toxic substances, cell viability, and signal transduction, were noted. Thus, it can be concluded that the presence of quinoline modifies the membrane composition, and this change may be an important indicator of the presence of N-heterocyclic compounds or other toxins in the environment.
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Cowan AR, Costanzo CM, Benham R, Loveridge EJ, Moody SC. Fungal bioremediation of polyethylene: Challenges and perspectives. J Appl Microbiol 2021; 132:78-89. [PMID: 34218487 DOI: 10.1111/jam.15203] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/18/2021] [Accepted: 06/30/2021] [Indexed: 11/28/2022]
Abstract
Plastics have become ubiquitous in both their adoption as materials and as environmental contaminants. Widespread pollution of these versatile, man-made and largely petroleum-derived polymers has resulted from their long-term mass production, inappropriate disposal and inadequate end of life management. Polyethylene (PE) is at the forefront of this problem, accounting for one-third of plastic demand in Europe in part due to its extensive use in packaging. Current recycling and incineration processes do not represent sustainable solutions to tackle plastic waste, especially once it becomes littered, and the development of new waste-management and remediation technologies are needed. Mycoremediation (fungal-based biodegradation) of PE has been the topic of several studies over the last two decades. The utility of these studies is limited by an inconclusive definition of biodegradation and a lack of knowledge regarding the biological systems responsible. This review highlights relevant features of fungi as potential bioremediation agents, before discussing the evidence for fungal biodegradation of both high- and low-density PE. An up-to-date perspective on mycoremediation as a future solution to PE waste is provided.
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Affiliation(s)
- Andrew R Cowan
- Faculty of Sport, Health and Social Science, Solent University, Southampton, UK
| | - Chiara M Costanzo
- Department of Chemistry, College of Science, Swansea University, Swansea, UK
| | - Robert Benham
- Faculty of Creative Industries, Architecture and Engineering, Solent University, Southampton, UK
| | - E Joel Loveridge
- Department of Chemistry, College of Science, Swansea University, Swansea, UK
| | - Suzy C Moody
- School of Life Sciences, Pharmacy and Chemistry, Faculty of Science, Engineering and Computing, Kingston University, Kingston-Upon-Thames, UK
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Taghavi N, Udugama IA, Zhuang WQ, Baroutian S. Challenges in biodegradation of non-degradable thermoplastic waste: From environmental impact to operational readiness. Biotechnol Adv 2021; 49:107731. [PMID: 33785376 DOI: 10.1016/j.biotechadv.2021.107731] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 02/17/2021] [Accepted: 03/16/2021] [Indexed: 12/30/2022]
Abstract
Non-degradable plastics such as polyethylene (PE), polypropylene (PP), polystyrene (PS), and polyethylene terephthalate (PET) are among the most generated plastic wastes in municipal and industrial waste streams. The mismanagement of abandoned plastics and toxic plastic additives have threatened marine and land fauna as well as human beings for several decades. The available thermal processes can degrade plastic at pilot- and commercial-scale. However, they are energy-intensive and can generate toxic gases. Degradation of plastic waste with the help of live microorganisms (biodegradation) is an eco- and environmentally friendly method for plastic degradation, although the slow processing time and low degradation rate still hinder its applications at pilot- and large-scale. In this review, the advantages and limitations of current plastic degradation methods, their technology readiness levels (TRL), biodegradation mechanisms and the associated challenges in biodegradation are assessed in detail. Based on this analysis, a path toward an efficient and greener way toward degradation of non-recyclable single-use PE, PP, PS and PET plastic is proposed.
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Affiliation(s)
- Navid Taghavi
- Department of Chemical & Materials Engineering, Faculty of Engineering, The University of Auckland, Auckland 1010, New Zealand
| | - Isuru Abeykoon Udugama
- Department of Chemical & Materials Engineering, Faculty of Engineering, The University of Auckland, Auckland 1010, New Zealand; Process and Systems Engineering Centre (PROSYS), Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Wei-Qin Zhuang
- Department of Civil & Environmental Engineering, Faculty of Engineering, The University of Auckland, Auckland 1010, New Zealand
| | - Saeid Baroutian
- Department of Chemical & Materials Engineering, Faculty of Engineering, The University of Auckland, Auckland 1010, New Zealand.
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Sangale MK, Shahnawaz M, Ade AB. Potential of fungi isolated from the dumping sites mangrove rhizosphere soil to degrade polythene. Sci Rep 2019; 9:5390. [PMID: 30926843 PMCID: PMC6440974 DOI: 10.1038/s41598-019-41448-y] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 03/06/2019] [Indexed: 11/09/2022] Open
Abstract
Polythene is the most widely used plastic around the globe. Among the total plastic waste generated, polythene contributes the maximum share (64%). Various strategies/methods are being utilized to deal with the increasing rate of plastic waste, but among all the methods, bioremediation is regarded as the ecofriendly and widely accepted method. In the current investigation, we have attempted to discover the elite polythene deteriorating fungi (isolated from the rhizosphere soil of Avicennia marina). From 12 different eco-geographical locations along the West Coast of India, total 109 fungal isolates were recorded. The polythene deteriorating fungi were screened at varied pH (3.5, 7 and 9.5) based on changes in weight and tensile strength of the treated polythene at ambient temperature with continuous shaking for 60 days. BAYF5 isolate (pH 7) results in maximum reduction in weight (58.51 ± 8.14) whereas PNPF15 (pH 3.5) recorded highest reduction in tensile strength (94.44 ± 2.40). Surprisingly, we have also reported weight gain, with highest percent weight gain (28.41 ± 6.99) with MANGF13 at pH 9.5. To test the reproducibility of the results, the elite polythene degrading fungal isolates based on weight loss and reduction in tensile strength were only used for repetition experiment and the results based on the reduction in tensile strength were found only reproducible. Polythene biodegradation was further confirmed using Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR) analysis. The most efficient polythene deteriorating fungal isolates were identified as Aspergillus terreus strain MANGF1/WL and Aspergillus sydowii strain PNPF15/TS using both morphological keys and molecular tools.
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Affiliation(s)
- Manisha K Sangale
- Department of Botany, Savitribai Phule Pune University, Pune, 411007, Maharashtra, India.,Department of Botany, S. M. Joshi College Hadapsar, Malwadi, Hadapsar, Pune, Maharashtra, 411028, India
| | - Mohd Shahnawaz
- Department of Botany, Savitribai Phule Pune University, Pune, 411007, Maharashtra, India. .,Plant Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road Jammu, Jammu, 180001, Jammu and Kashmir, India.
| | - Avinash B Ade
- Department of Botany, Savitribai Phule Pune University, Pune, 411007, Maharashtra, India.
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Ray S, Kalia VC. Biomedical Applications of Polyhydroxyalkanoates. Indian J Microbiol 2017; 57:261-269. [PMID: 28904409 PMCID: PMC5574769 DOI: 10.1007/s12088-017-0651-7] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 04/20/2017] [Indexed: 12/24/2022] Open
Abstract
Polyhydroxyalkanoates (PHA) are produced by a large number of microbes under stress conditions such as high carbon (C) availability and limitations of nutrients such as nitrogen, potassium, phosphorus, magnesium, and oxygen. Here, microbes store C as granules of PHAs-energy reservoir. PHAs have properties, which are quite similar to those of synthetic plastics. The unique properties, which make them desirable materials for biomedical applications is their biodegradability, biocompatibility, and non-toxicity. PHAs have been found suitable for various medical applications: biocontrol agents, drug carriers, biodegradable implants, tissue engineering, memory enhancers, and anticancer agents.
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Affiliation(s)
- Subhasree Ray
- Microbial Biotechnology and Genomics, CSIR - Institute of Genomics and Integrative Biology (IGIB), Delhi University Campus, Mall Road, Delhi, 110007 India
- Academy of Scientific and Innovative Research (AcSIR), 2, Rafi Marg, Anusandhan Bhawan, New Delhi, 110001 India
| | - Vipin Chandra Kalia
- Microbial Biotechnology and Genomics, CSIR - Institute of Genomics and Integrative Biology (IGIB), Delhi University Campus, Mall Road, Delhi, 110007 India
- Academy of Scientific and Innovative Research (AcSIR), 2, Rafi Marg, Anusandhan Bhawan, New Delhi, 110001 India
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