title: Biological delignification of paddy straw and Parthenium sp. using a novel micromycete Myrothecium roridum LG7 for enhanced saccharification.
abstract: A new lignolytic micromycete fungus Myrothecium roridum LG7 was isolated and selected for biological delignification of agro residue-paddy straw and herbaceous weed Parthenium sp. Physical and chemical modifications in the biomass following pretreatment with M. roridum LG7 for 7 days in term of structural modification and lignin removal, changes in lignin skeleton, and alteration of cellulose crystallinity was observed through SEM-EDXA, FTIR and XRD analysis, respectively. Colonization of the fungus led to high amount of lignin removal (5.8-6.98mg/gds) from pretreated biomass which could be recovered as a value added product. Enzymatic hydrolysis of M. roridum LG7 pretreated biomass released significantly higher amount of reducing sugars (455.81-509.65 mg/gds) as compared to respective raw biomass within 24h. This study illustrates the promise of M. roridum LG7 for biological pretreatment through structural and chemical alteration of biomass beside creation of alkaline environment which prevent the growth of other contaminants.
authors: Division of Microbiology, Indian Agricultural Research Institute, New Delhi 110012, India.
authors: Rameshwar
authors: R
authors: Tiwari
authors: Sarika
authors: S
authors: Rana
authors: Surender
authors: S
authors: Singh
authors: Anju
authors: A
authors: Arora
authors: Rajeev
authors: R
authors: Kaushik
authors: Ved Varun
authors: VV
authors: Agrawal
authors: Anil Kumar
authors: AK
authors: Saxena
authors: Lata
authors: L
authors: Nain
mesh_terms: D001203:Ascomycota / Q000302:isolation & purification / Q000378:metabolism*; D018533:Biomass; D050260:Carbohydrate Metabolism; D002480:Cellulase / Q000378:metabolism; D008031:Lignin / Q000378:metabolism*; D012275:Oryza / Q000737:chemistry*; D006109:Poaceae / Q000378:metabolism*; D013379:Substrate Specificity; D014866:Waste Products / Q000032:analysis*
chemical_list: D014866:Waste Products; C036909:lignocellulose; D008031:Lignin; D002480:Cellulase