Plastic degradation by thermophilic
                    <i>Bacillus</i>
                    sp. BCBT21 isolated from composting agricultural residual in Vietnam

Dang, Thi Cam Ha; Nguyen, Dang Thang; Hoàng, Thái; Nguyen, Thi Thanh Sang; Tran, Thi Thu Hien; Le, Viet Hung; Nguyen, Van Hoang; Tran, Xuan Bach; Pham, Thi Phuong Thao; Nguyen, Truong Giang; Nguyen, Quang Trung

doi:10.1088/2043-6254/aaabaf

Cited by 62 publications

(25 citation statements)

References 31 publications

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“…But despite their stable properties, the biodegradation of these polymers through microbial enzymes have been reported in various studies [73] . Similar results were obtained in Vietnam where three different kinds of plastic bags with different chemical nature were degraded by a novel thermophilic bacterial strain isolated from composting agricultural residual [76] .…”

Section: Applications Of Peroxidases In Industry Set Upsupporting

confidence: 79%

Breakthroughs in the discovery and use of different peroxidase isoforms of microbial origin

et al. 2020

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Peroxidases are classified as oxidoreductases and are the second largest class of enzymes applied in biotechnological processes. These enzymes are used to catalyze various oxidative reactions using hydrogen peroxide and other substrates as electron donors. They are isolated from various sources such as plants, animals and microbes. Peroxidase enzymes have versatile applications in bioenergy, bioremediation, dye decolorization, humic acid degradation, paper and pulp, and textile industries. Besides, peroxidases from different sources have unique abilities to degrade a broad range of environmental pollutants such as petroleum hydrocarbons, dioxins, industrial dye effluents, herbicides and pesticides. Ironically, unlike most biological catalysts, the function of peroxidases varies according to their source. For instance, manganese peroxidase (MnP) of fungal origin is widely used for depolymerization and demethylation of lignin and bleaching of pulp. While, horseradish peroxidase of plant origin is used for removal of phenols and aromatic amines from waste waters. Microbial enzymes are believed to be more stable than enzymes of plant or animal origin. Thus, making microbially-derived peroxidases a well-sought-after biocatalysts for versatile industrial and environmental applications. Therefore, the current review article highlights on the recent breakthroughs in the discovery and use of peroxidase isoforms of microbial origin at a possible depth.

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Section: Applications Of Peroxidases In Industry Set Upsupporting

confidence: 79%

Breakthroughs in the discovery and use of different peroxidase isoforms of microbial origin

et al. 2020

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“…To carry out simultaneous bioconversion of LCB and LDPE oxo different types of microorganisms can be used, by themselves, in co-cultures or in consortiums [15–17]. From an array of microorganisms studied, lignolytic white rot fungi are the most efficient to perform partial or total biotransformation of these types of solid residues [16–19] because of: ( i ) form networks of mycelia and produce exopolysaccharides that aid in colonization of both materials [6,20], ( ii ) produce an ample gamut of extracellular enzymes such as ligninases (E.C.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous bioconversion of lignocellulosic residues and oxodegradable polyethylene by Pleurotus ostreatus for biochar production, enriched with phosphate solubilizing bacteria for agricultural use

et al. 2019

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A simultaneous treatment of lignocellulosic biomass (LCB) and low density oxodegradable polyethylene (LDPE oxo ) was carried-out using Pleurotus ostreatus at microcosm scale to obtain biotransformed plastic and oxidized lignocellulosic biomass. This product was used as raw matter (RM) to produce biochar enriched with phosphate solubilizing bacteria (PSB). Biochar potential as biofertilizer was evaluated in Allium cepa culture at greenhouse scale. Experiments including lignocellulosic mix and LDPE oxo were performed for 75 days in microcosm. Biotransformation progress was performed by monitoring total organic carbon (TOC), CO 2 production, laccase (Lac), manganese peroxidase (MnP), and lignin peroxidase (LiP) enzymatic activities. Physical LDPE oxo changes were assessed by atomic force microscopy (AFM), scanning electron microscopy (SEM) and static contact angle (SCA) and chemical changes by Fourier transform infrared spectroscopy (FTIR). Results revealed P . ostreatus was capable of LCB and LDPE oxo biotransformation, obtaining 41% total organic carbon (TOC) removal with CO 2 production of 2,323 mg Kg -1 and enzyme activities of 169,438 UKg -1 , 5,535 UKg -1 and 5,267 UKg -1 for LiP, MnP and Lac, respectively. Regarding LDPE oxo , SCA was decreased by 84%, with an increase in signals at 1,076 cm -1 and 3,271 cm -1, corresponding to C-O and CO-H bonds. A decrease in signals was observed related to material degradation at 2,928 cm -1 , 2,848 cm -1 , agreeing with CH 2 asymmetrical and symmetrical stretching, respectively. PSB enriched biochar favored A . cepa plant growth during the five-week evaluation period. To the best of our knowledge, this is the first report of an in vitro circular production model, where P . ostreatus was employed at a microcosmos level to bioconvert LCB and LDPE oxo residues from the agroindustrial sector, followed by thermoconversion to produce an enriched biochar with PSB to be used as a biofertilizer to grow A . cepa at greenhouse scale.

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“…BCBT21 is one of the hydrolases producing bacteria. It produces lipase, CMCase, xylanase, chitinase, and protease that are important in the degradation of plastic polymers (65).…”

Section: Enzymes Involved In Plastics Biodegradationmentioning

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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Plastic degradation by thermophilic Bacillus sp. BCBT21 isolated from composting agricultural residual in Vietnam

Cited by 62 publications

References 31 publications

Breakthroughs in the discovery and use of different peroxidase isoforms of microbial origin

Breakthroughs in the discovery and use of different peroxidase isoforms of microbial origin

Simultaneous bioconversion of lignocellulosic residues and oxodegradable polyethylene by Pleurotus ostreatus for biochar production, enriched with phosphate solubilizing bacteria for agricultural use

A Review: Plastics Waste Biodegradation Using Plastics-Degrading Bacteria

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