Role of laccase in the pulp and paper industry

Hussain, Altaf; Bilal, Muhammad; Rafeeq, Hamza; Jabeen, Zara; Afsheen, Nadia; Sher, Farooq; Kumar, Vineet; Bharagava, Ram Naresh; Ferreira, Luiz Fernando Romanholo; Iqbal, Hafiz M.N.

doi:10.1016/b978-0-323-85835-9.00006-4

Cited by 8 publications

(3 citation statements)

References 59 publications

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“…In addition, cellulases are also especially important in reducing bleaching energy costs, increasing drainage efficiency, and improving paper gloss [ 283 ]. Furthermore, lignin oxidation by the action of laccases also significantly increases the final product brightness [ 291 ]. Several enzyme cocktails have been studied and produced for industrial pulp and paper processes [ 285 ].…”

Section: Application Of Lignocellulolytic Enzymesmentioning

confidence: 99%

Lignocellulolytic Biocatalysts: The Main Players Involved in Multiple Biotechnological Processes for Biomass Valorization

Benatti

Polizeli

2023

Microorganisms

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Human population growth, industrialization, and globalization have caused several pressures on the planet’s natural resources, culminating in the severe climate and environmental crisis which we are facing. Aiming to remedy and mitigate the impact of human activities on the environment, the use of lignocellulolytic enzymes for biofuel production, food, bioremediation, and other various industries, is presented as a more sustainable alternative. These enzymes are characterized as a group of enzymes capable of breaking down lignocellulosic biomass into its different monomer units, making it accessible for bioconversion into various products and applications in the most diverse industries. Among all the organisms that produce lignocellulolytic enzymes, microorganisms are seen as the primary sources for obtaining them. Therefore, this review proposes to discuss the fundamental aspects of the enzymes forming lignocellulolytic systems and the main microorganisms used to obtain them. In addition, different possible industrial applications for these enzymes will be discussed, as well as information about their production modes and considerations about recent advances and future perspectives in research in pursuit of expanding lignocellulolytic enzyme uses at an industrial scale.

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Section: Application Of Lignocellulolytic Enzymesmentioning

confidence: 99%

Lignocellulolytic Biocatalysts: The Main Players Involved in Multiple Biotechnological Processes for Biomass Valorization

Benatti

Polizeli

2023

Microorganisms

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“…The utilization of oxygen as a final acceptor of electrons without involving expensive co-factors, the generation of water as a lone secondary product, and the promiscuity of these enzymes for a broad variety of organic compounds make them an ideal candidate as biocatalysts for diverse technological purposes [9][10][11]. These purposes include applications in the food industry, chemical synthesis, the paper and pulp industry, and bioremediation [12][13][14][15][16][17]. Despite its wide range of substrate specificity, its low redox potential restricts its applications.…”

Section: Introductionmentioning

confidence: 99%

Laccase Engineering: Redox Potential Is Not the Only Activity-Determining Feature in the Metalloproteins

Ali,

Bhardwaj,

Ishqi

et al. 2023

Molecules

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Laccase, one of the metalloproteins, belongs to the multicopper oxidase family. It oxidizes a wide range of substrates and generates water as a sole by-product. The engineering of laccase is important to broaden their industrial and environmental applications. The general assumption is that the low redox potential of laccases is the principal obstacle, as evidenced by their low activity towards certain substrates. Therefore, the primary goal of engineering laccases is to improve their oxidation capability, thereby increasing their redox potential. Even though some of the determinants of laccase are known, it is still not entirely clear how to enhance its redox potential. However, the laccase active site has additional characteristics that regulate the enzymes’ activity and specificity. These include the electrostatic and hydrophobic environment of the substrate binding pocket, the steric effect at the substrate binding site, and the orientation of the binding substrate with respect to the T1 site of the laccase. In this review, these features of the substrate binding site will be discussed to highlight their importance as a target for future laccase engineering.

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“…For instance, peroxidases are used in industrial chemical synthesis, diagnostic tests, and enzyme immunoassays [ 47 ]. Meanwhile, laccase has great importance in the paper industry due to its capacity for delignification [ 48 , 49 ]. Moreover, laccases are also useful in ethanol production, wine clarification, industrial effluents treatment, herbicide degradation, dyes decoloration, and drug analysis [ 50 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Peroxidase and Laccase Gene Families and In Silico Identification of Potential Genes Involved in Upstream Steps of Lignan Formation in Sesame

Zoclanclounon

Rostás

Chung

et al. 2022

Life

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Peroxidases and laccases are oxidative enzymes involved in physiological processes in plants, covering responses to biotic and abiotic stress as well as biosynthesis of health-promoting specialized metabolites. Although they are thought to be involved in the biosynthesis of (+)-pinoresinol, a comprehensive investigation of this class of enzymes has not yet been conducted in the emerging oil crop sesame and no information is available regarding the potential (+)-pinoresinol synthase genes in this crop. In the present study, we conducted a pan-genome-wide identification of peroxidase and laccase genes coupled with transcriptome profiling of diverse sesame varieties. A total of 83 and 48 genes have been identified as coding for sesame peroxidase and laccase genes, respectively. Based on their protein domain and Arabidopsis thaliana genes used as baits, the genes were classified into nine and seven groups of peroxidase and laccase genes, respectively. The expression of the genes was evaluated using dynamic transcriptome sequencing data from six sesame varieties, including one elite cultivar, white vs black seed varieties, and high vs low oil content varieties. Two peroxidase genes (SiPOD52 and SiPOD63) and two laccase genes (SiLAC1 and SiLAC39), well conserved within the sesame pan-genome and exhibiting consistent expression patterns within sesame varieties matching the kinetic of (+)-pinoresinol accumulation in seeds, were identified as potential (+)-pinoresinol synthase genes. Cis-acting elements of the candidate genes revealed their potential involvement in development, hormonal signaling, and response to light and other abiotic triggers. Transcription factor enrichment analysis of promoter regions showed the predominance of MYB binding sequences. The findings from this study pave the way for lignans-oriented engineering of sesame with wide potential applications in food, health and medicinal domains.

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Role of laccase in the pulp and paper industry

Cited by 8 publications

References 59 publications

Lignocellulolytic Biocatalysts: The Main Players Involved in Multiple Biotechnological Processes for Biomass Valorization

Lignocellulolytic Biocatalysts: The Main Players Involved in Multiple Biotechnological Processes for Biomass Valorization

Laccase Engineering: Redox Potential Is Not the Only Activity-Determining Feature in the Metalloproteins

Characterization of Peroxidase and Laccase Gene Families and In Silico Identification of Potential Genes Involved in Upstream Steps of Lignan Formation in Sesame

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