Exploring the promoting mechanisms of bovine serum albumin, lignosulfonate, and polyethylene glycol for lignocellulose saccharification from perspective of molecular interactions with cellulase

Bovine serum albumin (BSA), polyethylene glycol (PEG) and lignosulfonate (LS) have been extensively employed as synergistic agents in lignocellulose saccharification. Nevertheless, the promoting mechanisms not fully understood there are a number of controversial opinions existed. All attention has paid to interactions between respective additive substrate. However, rarely additives enzymes (cellulase from Trichoderma reesei this investigation). This interaction is actually more important since cellulase interacts with before it contacts Therein, Quartz crystal microbalance dissipation monitoring (QCM-D), surface plasma resonance (SPR) small angel X-ray scattering (SAXS) were incorporated study enzyme additives. The results showed different modes cellulase. BSA LS can form complexes formed prevent them nonproductive binding by residue lignin; what’s more, cellulase-BSA improve hydrolytic capability pristine whereas cellulase-LS reduce. PEG prevents unproductive residual lignin forming thin layer that acts steric hindrance lignin. investigation helps us understand sophisticated among components complicated enzymatic system, especially agents. It will be helpful design utilization biorefinery process well.