Design and performance of amphiphilic lignin derivatives in enzymatic hydrolysis of sweet sorghum bagasse for bioethanol production

Sweet sorghum bagasse (SSB) is potential feedstock for bioethanol production due to its natural abundance and high cellulose content (> 40%). This work compared the impact of three variables relative enzymatic hydrolysis SSB kraft pulp. The were biosurfactant from lignin derivative known as amphiphilic derivatives (A-LD), enzyme loading level, time. These optimized by response surface methodology (RSM) with a Box-Behnken design (BBD). concentration polyethylene glycol (PEG) 4000 was also compare it A-LD performance in process. After optimization, produced higher reducing sugar yield (RSY) (99.45%) than PEG 4000. difference predicted versus experimental values RSY less 4%, which means that model highly predictive. adequacy confirmed regression value close 1 assisted test. result implies significantly improved enhance RSY. Moreover, BBD adequate useful identify optimum surfactant.