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Modifications of wheat straw to enhance cellulose saccharification by enzymatic hydrolysis
- Cunningham, R.L., Detroy, R.W., Bagby, M.O., Baker, F.L.
- Transactions of the Illinois State Academy of Science 1981 v.74 no.3/4 pp. 67
- wheat straw, lignocellulose, lignocellulosic wastes, heat treatment, chemical treatment, alkalis, alkali treatment, chopping, grinding, pulping, sodium hydroxide, sodium hypochlorite, pretreatment, cellulose, saccharification, enzymatic hydrolysis, cellulases, glucose, yields
- Successful utilization of lignocelluloses for fermentation alcohol or other chemicals requires development of economic conversion techniques. Chemical, physical and thermal processes were applied to wheat straw (WS) and the modified products were assayed by enzymatic hydrolysis. Treatments that remove pentosans or lignin make the cellulose more readily available to saccharifying enzymes. Autohydrolysis at 170.degree. C for 30 min decreased pentosan content and increased 4-fold the conversion of cellulose to glucose. Cold soda pulping removed lignin and pentosans to effect a 6-fold improvement. Good results were obtained by more complete delignification without an appreciable loss in pentosans.