Effect of Temperature and Time on the Steam Pretreatment of Hazelnut Shells for the Enzymatic Saccharification

Abstract

Saturated steam pretreatment of hazelnut shells was studied for fermentable sugars after enzymatic hydrolysis. The elevation of temperature (from 160 to 200 degrees C) and time (0-30 min) of steam pretreatment were investigated. Hemicellulose removal (%) gradually increased with increasing pretreatment temperature and time. 83 % of initial hemicellulose was removed when the biomass was treated at 200 degrees C for 30 min. Maximum cellulose digestibility (46%) was obtained at the conditions of 180 degrees C for 30 min (46 %). Glucose recovery ranged from 337 to 456 mg/g initial solid.