Sweet Sorghum Bagasse Pretreatment by Coriolus versicolor in Mesh Tray Bioreactor for Selective Delignification and Improved Saccharification

Mishra, Vartika; Jana, Asim Kumar

doi:10.1007/s12649-018-0276-z

Cited by 18 publications

(13 citation statements)

References 61 publications

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“…Lignocellulolytic enzymes linked to the degradation of lignin are the laccases, lignin peroxidases, and Mn peroxidases. Lignin acts as a rigid barrier, which hinders the access of enzymes to cellulose [38]. White-rot fungi can grow on lignocellulosic materials and to produce peroxidases for degradation of the lignin fraction [39], improving the subsequent enzymatic hydrolysis of cellulose fraction.…”

Section: Production Of Lignocellulosic Enzymes In Ssf Bioreactorsmentioning

confidence: 99%

Recent advances in production of lignocellulolytic enzymes by solid-state fermentation of agro-industrial wastes

Leite

Sousa

Fernandes

et al. 2021

Current Opinion in Green and Sustainable Chemistry

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Agricultural, forestry, and food industries produce large amounts of lignocellulosic wastes every year. Land disposal of these residues without proper treatment leads to environmental pollution and negative health effects. The recent advances in valorization of agro-industrial wastes by the production of lignocellulolytic enzymes under solid-state fermentation (SSF) are reviewed. SSF is a promising technology to produce lignocellulolytic enzymes. However, the large-scale feasibility is the main challenge of SSF being the control of operational parameters and adequate reactor design the first locks. The current and future trends of SSF bioreactors for lignocellulolytic enzyme production are summarized. SSF allows the production of lignocellulolytic enzymes with high stability at different temperatures and pH, improving their applicability in different industrial settings.

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Section: Production Of Lignocellulosic Enzymes In Ssf Bioreactorsmentioning

confidence: 99%

Recent advances in production of lignocellulolytic enzymes by solid-state fermentation of agro-industrial wastes

Leite

Sousa

Fernandes

et al. 2021

Current Opinion in Green and Sustainable Chemistry

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“…Agricultural feedstocks such as sweet sorghum bagasse (SSB) and corncob (CC) have been identified as promising alternatives for the production of second-generation biofuels and other value-added chemicals [1][2][3]. These feedstocks consist of polysaccharides (cellulose and hemicellulose) that can be hydrolysed to simple monosaccharides which can be fermented to produce ethanol.…”

Section: Introductionmentioning

confidence: 99%

“…The acid pretreatment of agricultural feedstocks effectively removes lignin, however, it also removes a high amount of hemicellulose. In addition, some acids such as sulfuric acid are not environmentally friendly or require higher temperature for long periods (140 • C for 6 h) for the pretreatment to be effective [2]. Biological pretreatments such as the use of fungi or bacteria to degrade lignin were introduced as alternative environmentally friendly pretreatment technologies [8].…”

Section: Introductionmentioning

confidence: 99%

“…Biological pretreatments such as the use of fungi or bacteria to degrade lignin were introduced as alternative environmentally friendly pretreatment technologies [8]. For instance, Mishra and Jana [2] pretreated SSB biomass with Coriolus versicolor using solid-state fermentation (SSF) in a bioreactor. C. versicolor removed more than 40% (w/w) of lignin from the SSB biomass, but this process takes many days to remove high amounts of lignin.…”

Section: Introductionmentioning

confidence: 99%

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The Effects of Alkaline Pretreatment on Agricultural Biomasses (Corn Cob and Sweet Sorghum Bagasse) and Their Hydrolysis by a Termite-Derived Enzyme Cocktail

et al. 2020

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Sweet sorghum bagasse (SSB) and corncob (CC) have been identified as promising feedstocks for the production of second-generation biofuels and other value-added chemicals. In this study, lime (Ca(OH)2) and NaOH pretreatment efficacy for decreasing recalcitrance from SSB and CC was investigated, and subsequently, the pretreated biomass was subjected to the hydrolytic action of an in-house formulated holocellulolytic enzyme cocktail (HEC-H). Compositional analysis revealed that SSB contained 29.34% lignin, 17.75% cellulose and 16.28% hemicellulose, while CC consisted of 22.51% lignin, 23.58% cellulose and 33.34% hemicellulose. Alkaline pretreatment was more effective in pretreating CC biomass compared to the SSB biomass. Both Ca(OH)2 and NaOH pretreatment removed lignin from the CC biomass, while only NaOH removed lignin from the SSB biomass. Biomass compositional analysis revealed that these agricultural feedstocks differed in their chemical composition because the CC biomass contained mainly hemicellulose (33–35%), while SSB biomass consisted mainly of cellulose (17–24%). The alkaline pretreated SSB and CC samples were subjected to the hydrolytic action of the holocellulolytic enzyme cocktail, formulated with termite derived multifunctional enzymes (referred to as MFE-5E, MFE-5H and MFE-45) and exoglucanase (Exg-D). The HEC-H hydrolysed NaOH pretreated SSB and CC more effectively than Ca(OH)2 pretreated feedstocks, revealing that NaOH was a more effective pretreatment. In conclusion, the HEC-H cocktail efficiently hydrolysed alkaline pretreated agricultural feedstocks, particularly those which are hemicellulose- and amorphous cellulose-rich, such as CC, making it attractive for use in the bioconversion process in the biorefinery industry.

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“…The most suitable type of bioreactor for SSF scale-up is the tray bioreactor. It is a traditional type of bioreactor used in SSF, most commonly in laboratory research for enzyme production [ 63 ], for lignin degradation [ 62 , 63 ] for the application of biologically pretreated material in the process of biogas production [ 55 ]. It is also used in commercial processes in various industries, such as the production of fermented foods such as tempeh [ 8 ] and the production of various enzymes [ 64 ].…”

Section: Solid-state Fermentation (Ssf)mentioning

confidence: 99%

A Comprehensive Review on Valorization of Agro-Food Industrial Residues by Solid-State Fermentation

Šelo

Planinić

Tišma

et al. 2021

Foods

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Agro-food industrial residues (AFIRs) are generated in large quantities all over the world. The vast majority of these wastes are lignocellulosic wastes that are a source of value-added products. Technologies such as solid-state fermentation (SSF) for bioconversion of lignocellulosic waste, based on the production of a wide range of bioproducts, offer both economic and environmental benefits. The versatility of application and interest in applying the principles of the circular bioeconomy make SSF one of the valorization strategies for AFIRs that can have a significant impact on the environment of the wider community. Important criteria for SSF are the selection of the appropriate and compatible substrate and microorganism, as well as the selection of the optimal process parameters for the growth of the microorganism and the production of the desired metabolites. This review provides an overview of the management of AFIRs by SSF: the current application, classification, and chemical composition of AFIRs; the catalytic function and potential application of enzymes produced by various microorganisms during SSF cultivation on AFIRs; the production of phenolic compounds by SSF; and a brief insight into the role of SSF treatment of AFIRs for feed improvement and biofuel production.

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Sweet Sorghum Bagasse Pretreatment by Coriolus versicolor in Mesh Tray Bioreactor for Selective Delignification and Improved Saccharification

Cited by 18 publications

References 61 publications

Recent advances in production of lignocellulolytic enzymes by solid-state fermentation of agro-industrial wastes

Recent advances in production of lignocellulolytic enzymes by solid-state fermentation of agro-industrial wastes

The Effects of Alkaline Pretreatment on Agricultural Biomasses (Corn Cob and Sweet Sorghum Bagasse) and Their Hydrolysis by a Termite-Derived Enzyme Cocktail

A Comprehensive Review on Valorization of Agro-Food Industrial Residues by Solid-State Fermentation

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