Role of a thermostable laccase produced by Streptomyces ipomoeae in the degradation of wheat straw lignin in solid state fermentation

Arias, Mauricio; Blánquez, Alba; Hernández, Manuel; Rodríguez, Jhon James Mora; Ball, Andrew S.; Morillo, N. T. Jiménez; González-Vila, Francisco Javier; González‐Pérez, José Antonío

doi:10.1016/j.jaap.2016.09.023

Cited by 36 publications

(18 citation statements)

References 29 publications

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“…Agricultural waste provides carbon and nitrogen nutrients, which are excellent substrates for fungal growth and laccase production in SSF [41,42]. In general, the most abundant and least expensive lignocellulosic agricultural waste source is crop straw (e.g., from rice, wheat, or corn).…”

Section: Lignocellulosic Agricultural Wastesmentioning

confidence: 99%

Fungal Laccase Production from Lignocellulosic Agricultural Wastes by Solid-State Fermentation: A Review

et al. 2019

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Laccases are copper-containing oxidase enzymes found in many fungi. They have received increasing research attention because of their broad substrate specificity and applicability in industrial processes, such as pulp delignification, textile bleaching, phenolic removal, and biosensors. In comparison with traditional submerged fermentation (SF), solid-state fermentation (SSF) is a simpler technique for laccase production and has many advantages, including higher productivity, efficiency, and enzyme stability as well as reduced production costs and environmental pollution. Here, we review recent advances in laccase production technology, with focus on the following areas: (i) Characteristics and advantages of lignocellulosic agricultural wastes used as SSF substrates of laccase production, including detailed suggestions for the selection of lignocellulosic agricultural wastes; (ii) Comparison of fungal laccase production from lignocellulosic substrates by either SSF or SF; (iii) Fungal performance and strain screening in laccase production from lignocellulosic agricultural wastes by SSF; (iv) Applications of laccase production under SSF; and (v) Suggestions and avenues for future studies of laccase production by fungal SSF with lignocellulosic materials and its applications.

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Section: Lignocellulosic Agricultural Wastesmentioning

confidence: 99%

Fungal Laccase Production from Lignocellulosic Agricultural Wastes by Solid-State Fermentation: A Review

et al. 2019

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“…The biological role of fungal and plant laccases has been exhaustively studied and shown to be related to the degradation and synthesis of lignin, respectively (Riva, 2006). It has been suggested that bacterial laccases are involved in morphogenesis, biosynthesis of spore pigments, copper homeostasis and lignin solubilisation (Roberts et al, 2002, Arias et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Decolorization and detoxification of textile dyes using a versatile Streptomyces laccase-natural mediator system

Blánquez

Rodríguez

Brissos

et al. 2019

Saudi Journal of Biological Sciences

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Currently, there is increasing interest in assessing the potential of bacterial laccases for industrial and environmental applications especially in harsh conditions. The environmental impact of the textile industry requires novel and effective technologies to mitigate the presence of dyes in wastewaters before discharging into the environment. Dyes usually remain stable in the presence of a variety of chemicals, light and are recalcitrant to microbial degradation. Among available technologies the biological treatments offer environmentally friendly strategies for decolorizing and detoxifying these compounds. The recent discovery of versatile laccases in streptomycetes opens up new opportunities for their commercial application. The aim of this study is to assess the potential of a novel bacterial laccase SilA produced by Streptomyces ipomoeae CECT 3341 active over wide temperature and pH ranges for use as an eco-friendly, biological treatment for the degradation of textile dyes. Insights into the enhancement of the oxidative action of this enzyme through the use of natural redox mediators are presented together with an assessment of the potential toxicity of the degradation products. Our results confirm that the combination of the laccase and natural mediators such as acetosyringone and methyl syringate enhanced the decolorization and detoxification of a variety of textile dyes up to sixfold and 20-fold, respectively. Mediator concentration was found to have a significant effect (p < 0.05) on dye decolorization at 60 °C; thus, the decolorization of Acid Orange 63 increased from 6 to 70-fold when the mediator concentration was increased from 0.1 to 0.5 mM. Further, the toxicity of tartrazine decreased 36-fold when the SilA-MeS system was used to decolorize the dye. The thermal properties of the SilA coupled with the stability of SilA at high pH suggest a potential commercial application for use in the decolorization of textile wastewaters which generally are performed at high temperature (>55 °C) and salinity and neutral pH, conditions which are unfavourable for conventional fungal laccases.

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“…The initial mixture was composed of pig slurry and straw at a ratio of 3:1 (w/w). The three main constituents of straw are cellulose, hemicelluloses (carbohydrates) and lignin [14,17]. The animal manure is a complex solid/liquid system that contains a mixture of raw fibre, cellulose, woody parts, plants residues in various degree of decomposition, mineral materials, excretions from the digestive system such as bacteria and products of their metabolism, nitrogen compounds from the metabolism of protein and non-protein substances as well as vitamins and hormones.…”

Section: Experimental Set-upmentioning

confidence: 99%

“…Consequently, Py-GC/MS represents a powerful tool for analyzing organic wastes of different nature and origin. In fact, it has been applied to the characterization of compost [8,9], digested sewage sludge [10], mulched soil [11], agricultural soil and its humic fractions [12,13] and more recently to the study of fermentation processes of lignocellulosic materials [14,15]. Only a few papers have reported previously the application of Py-GC/MS to study AD processes [16,17].…”

Section: Introductionmentioning

confidence: 99%

Molecular characterization of digestates from solid-state anaerobic digestion of pig slurry and straw using analytical pyrolysis

Cavallo

Rosa

González‐Pérez

et al. 2018

Journal of Analytical and Applied Pyrolysis

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HIGHLIGHTS • Molecular composition of solid-state anaerobic digestates of pig slurry and straw studied by Py-GC/MS • Highest OM loss found when using 2 and 4 percolate recirculation per day • Greater polysaccharides consumption found when increasing recirculation frequency • Enrichment in Lig-compounds found when increasing recirculation frequency • Positive effect of percolate recirculation on OM degradation and stabilization

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Role of a thermostable laccase produced by Streptomyces ipomoeae in the degradation of wheat straw lignin in solid state fermentation

Cited by 36 publications

References 29 publications

Fungal Laccase Production from Lignocellulosic Agricultural Wastes by Solid-State Fermentation: A Review

Fungal Laccase Production from Lignocellulosic Agricultural Wastes by Solid-State Fermentation: A Review

Decolorization and detoxification of textile dyes using a versatile Streptomyces laccase-natural mediator system

Molecular characterization of digestates from solid-state anaerobic digestion of pig slurry and straw using analytical pyrolysis

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