EFFECT OF THERMOCHEMICAL TREATMENT PARAME TERS AND ENZYMATIC-HYDROLYSIS OF WHEAT-STRAW ON SIMPLE SUGAR YIELD

Wheat straw has been treated with 1,0% or 1,5% solution of HNO3 at 185 centigrade and substrate/solution weight ratio equal 1,0 and after th at enzymatically hydrolyzed with use of Trichoderma reesei cellulase. At optimum conditions 90% of xylan and cellulose to sugar conversion h as been reached. When substrate/solution weight ratio was 1/3, convers ion rations were lower. It has been shown that increase in the sugar c onversion level from 50 to 90% requires at least 5,5 fold increase in cellulase dose. After 48 hours of enzymatic hydrolysis of wheat straw at 30 and 50 centigrade the glucose yields were comparable, however th ey were very different in the beginning.