Steam explosion pretreatment of corn stover (SEPOCS) was provided
by Jiangsu Kangwei Biotechnology Co. (Dongtai, China). It
was prepared as follows: corn stover was soaked with 3.0% (w/
w) sulfuric acid for 2 h and then processed at 170 C for 5 min. SEPOCS
was washed by 10-fold distilled water (w/w), filtered, and
stored in sealed plastic bags at 4 C. The sample was used throughout
the experiments.