title: Investigating the enzyme-lignin binding with surfactants for improved saccharification of pilot scale pretreated wheat straw.
abstract: In this study, commercial surfactants have been investigated at economically viable dosage to enhance the enzymatic saccharification of pretreated wheat straw at high solid loadings. Twenty one surfactants were evaluated with pilot scale pretreated wheat straw and mechanism of surfactant action has been elucidated. One surfactant has improved the saccharification of dilute acid wheat straw (DAWS) by 26.4% after 24h and 23.1% after 48h while, steam exploded wheat straw (SEWS) saccharification was increased by 51.2% after 24h and 36.4% after 48h at 10% solid loading. At 20% solid loading, about 31% increase in yield was obtained on DAWS and about 55% on SEWS after 48h. Further, lignin was isolated from pretreated wheat straws and characterized which revealed that SEWS derived lignin was more hydrophobic than DAWS lignin. This investigation suggests that surfactant supplementation during saccharification is an effective strategy to achieve higher saccharification yield.
authors.affiliation: DBT-IOC Centre for Advanced Bioenergy Research, Research and Development Centre, Indian Oil Corporation Ltd., Sector-13, Faridabad 121007, India.
authors.forename: Ruchi
authors.initials: R
authors.lastname: Agrawal
authors.affiliation: DBT-IOC Centre for Advanced Bioenergy Research, Research and Development Centre, Indian Oil Corporation Ltd., Sector-13, Faridabad 121007, India. Electronic address: satlewala@indianoil.in.
authors.forename: Alok
authors.initials: A
authors.lastname: Satlewal
authors.affiliation: DBT-IOC Centre for Advanced Bioenergy Research, Research and Development Centre, Indian Oil Corporation Ltd., Sector-13, Faridabad 121007, India.
authors.forename: Manali
authors.initials: M
authors.lastname: Kapoor
authors.affiliation: Analytical Department, Research and Development Centre, Indian Oil Corporation Ltd., Sector-13, Faridabad 121007, India.
authors.forename: Sujit
authors.initials: S
authors.lastname: Mondal
authors.affiliation: DBT-IOC Centre for Advanced Bioenergy Research, Research and Development Centre, Indian Oil Corporation Ltd., Sector-13, Faridabad 121007, India.
authors.forename: Biswajit
authors.initials: B
authors.lastname: Basu
mesh_terms: D000327:Adsorption; D018533:Biomass; D019149:Bioreactors; D050260:Carbohydrate Metabolism / Q000187:drug effects*; D002480:Cellulase / Q000378:metabolism*; D004795:Enzyme Stability / Q000187:drug effects; D005285:Fermentation / Q000187:drug effects; D008031:Lignin / Q000378:metabolism*; D010865:Pilot Projects; D066244:Proton Magnetic Resonance Spectroscopy; D015203:Reproducibility of Results; D017550:Spectroscopy, Fourier Transform Infrared; D013227:Steam; D013379:Substrate Specificity / Q000187:drug effects; D013464:Sulfuric Acids / Q000494:pharmacology; D013501:Surface-Active Agents / Q000494:pharmacology*; D014908:Triticum / Q000737:chemistry*; D014866:Waste Products
chemical_list: D013227:Steam; D013464:Sulfuric Acids; D013501:Surface-Active Agents; D014866:Waste Products; D008031:Lignin; D002480:Cellulase; C033158:sulfuric acid
keywords: Adsorption; Hydrolysis; Hydrophobicity; Lignin; Mechanism; Stability