Effects of reduced severity of ammonium sulfite pretreatment on bamboo for high cellulose Recovery

This study was performed to quantify the effect of different pretreatment temperatures, time durations, and ammonium sulfite concentrations on the total cellulose recovery yieldduring pretreatment by the Box–Behnken design based on the response surface methodology. The total cellulose recovery yield after the 48 h enzymatic hydrolysis (with the cellulose loading of 15 FPU per g glucan) could reach around 59.87% with the preferred pretreatment condition of 20% ammonium sufite at 150℃ for 6 h.