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Microbial Laccase: a robust enzyme and its industrial applications

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Abstract

Laccases (E.C. 1.10.3.2) are most stable and powerful biocatalysts with broad applications. It is a copper containing, organic solvents resistance, oxidoreductase enzyme, having potential ability to oxidize the phenolic and non-phenolic compounds to produce dimers, oligomers, and polymers. Laccase are widely distributed in nature ranging from prokaryotes to lower eukaryotes and fungi to plants. In their natural surroundings, Laccases are responsible for the biological degradation of lignin and received much attention among researchers in last decade, due to their wide-spread applicability and stability. The huge versatility of laccase due to their broad range of substrate specificity makes laccase highly suitable for various fields of industrial applications such as paper and pulp industry, textile applications, bioremediation, food processing, pharmaceutical and nanobiotechnological applications, bio-bleaching of synthetic dyes and biodegradation of xenobiotic compounds. Laccase mediated enzymatic treatment has been considered as, an effective process towards their adequate effect of real industrial decolourization of dye-contaminated wastewater, improving and texturing the food quality in affordable cost, less-time consuming at state-of-environmental risk. A present review is a brief analysis about this prominent group of enzymes and increase knowledge about its applications further which would encourage the use of laccase based production for economical purposes in future.

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Abbreviations

EC:

Enzyme commission

MCOs:

Multi-copper oxidases

2, 5-xylidine:

2, 5-dimethylbenzene-1-amine

kDa:

Kilo-Dalton

pI:

Isoelectric point

EPR:

Electron Paramagnetic Resonance

Cu:

Copper

EFBs:

Empty fruit bunches

PAHs:

Polynuclear aromatic hydrocarbons

PCP:

Pentachlorophenol

PCB:

Polychlorinated biphenyls

DDT:

1, 1, 1-trichloro-2, 2-bis (4-chlorophenyl) ethane

BTEX:

Benzene, toluene, ethylbenzene, and xylene

TNT:

Trinitrotoluene

CuSO4 :

Copper sulphate

RSM:

Response surface methodology

SMF:

Submerged fermentation

SSF:

Solid-state fermentation

Nacl:

Sodium chloride

MnII:

Manganese diphosphate

MnP:

Manganese peroxidase

MnO2 :

Manganese oxide

VPLs:

versatile peroxidase

T1:

Type-1

T2:

Type-2

T3:

Type-3

HBT:

hydroxybenzotriazole

EDCs:

Endocrine disrupting compounds

PPCPs:

Pharmaceuticals and personal care products

Ecs:

Emerging contaminants

BPA:

Bisphenol A

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Acknowledgments

Authors are thankful to Shri Ramswaroop Memorial University Lucknow-Deva road, Barabanki UP, India for providing research and financial support.

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Correspondence to Neeraj Gupta.

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The authors have no financial conflicts of interest to declare.

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Singh, D., Gupta, N. Microbial Laccase: a robust enzyme and its industrial applications. Biologia 75, 1183–1193 (2020). https://doi.org/10.2478/s11756-019-00414-9

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