2014•Science Technology and EngineeringRequires access
Enzymatic Hydrolysis of Corn Stalk by Dilute Acid-steam Explosion
Han Mu-xi
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Abstract
In order to increase the enzymic hydrolysis of corn stalk,steam explosion of corn stalk was carried out under various pretreatment conditions( 1. 5 MPa,1. 8 MPa and 2. 0 MPa,4 min,6 min and 8 min) after impregnation of the corn stalk with 1. 0%( w / w) H2SO4or water. Composition of solid and filtrate obtained after pretreatment,enzymatic digestibility of pretreated corn stalk at different experimental conditions was analyzed. The best pretreatment conditions to obtain high conversion yield to glucose after steam-explosion were 1. 8 MPa and 8 min,in acid-impregnated corn stalk. for 24 h. The highest glucose yield referred to raw material is 26. 9 g /100 g corn stalk and sugars recovery yield in the filtrate is 34. 5g /100g corn stalk).