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

  • Vartika Mishra
  • Asim K. Jana
Original Paper


Fungal pretreatment of sweet sorghum bagasse (SSB) by solid state fermentation (SSF) studied in a Mesh tray bioreactor. In pretreatment by using Coriolus versicolor, optimal mesh size in tray and humid airflow into bioreactor overcame the problems of SSF and improved fungal growth; increased the production of lignolytic enzymes laccase, lignin peroxidase, manganese peroxidase, polyphenol peroxidase, aryl alcohol oxidase by 1.9, 1.85, 2.6, 2.0, 1.9 folds respectively; hemicellulolytic enzyme xylanase by 1.8 folds and decreased cellulolytic enzymes production. Altered lignocellulolytic enzyme profiles resulted in high lignin degradation 46.09 ± 2.0% w w−1, high selectivity value 5.98 and low cellulose loss 7.7 ± 0.3% w w−1. Enzymatic hydrolysis of pretreated SSB yielded higher (~ 2.47 times) fermentable sugar. Characterizations of SSB by SEM, XRD, FTIR, TGA/DTG supported the results. Mesh tray bioreactor could be used for fungal pretreatment and enzyme productions by SSF of waste biomass.

Graphical Abstract


Mesh tray bioreactor Sweet sorghum bagasse Fungal pretreatment Lignin degradation Selectivity value 



Mrs. Vartika Mishra gratefully acknowledges Ministry of Human Resource Development (MHRD), Govt. of India for providing the fellowship during the study. All authors are highly thankful to National Institute of Technology (NIT), Jalandhar for providing grants and administrative supports for the study.

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

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Supplementary material 1 (PDF 147 KB)
12649_2018_276_MOESM2_ESM.pdf (220 kb)
Supplementary material 2 (PDF 220 KB)
12649_2018_276_MOESM3_ESM.pdf (147 kb)
Supplementary material 3 (PDF 147 KB)


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Authors and Affiliations

  1. 1.Department of BiotechnologyDr B R A National Institute of TechnologyJalandharIndia

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