폭쇄처리(爆碎處理)된 목질계(木質系) Biomass의 산소가수분해(酸素加水分解)(I) -리그닌의 함량(含量)과 섬유소(纖維素)의 결정화도(結晶化度)가 산소가수분해(酸素加水分解)에 미치는 영향

The Enzymatic Hydrolysis of Exploded Woody Biomass(I) -Effects of Lignin Contents and Cellulose Crystallinity on the Enzymatic Hydrolysis-

Substrates used were hardwood-Suwon poplar-(Populus alba${\times}$glandulosa L.) and softwood-pitch pine-(Pinus rigida M.). And these substrates were steam exploded then treated with sodium chlorite at 75$^{\circ}C$ with occasional stirring in order to obtain samples which had different lignin contents and crystallinity. And then this resulting samples incubated with a commercial cellulase derived from Trichoderma ressei. The contents of Klason lignin were decreased as the increasing of the ratio of sodium chlorite in the two species. The effect of hardwood was more effective than that of softwood in the same ratio of sodium chlorite. The minimum contents of Klason lignin were 0.8% and 5.1% respectively. And the crystallinities of cellulose were increased very little as increasing of the ratio of sodium clorite. The hydrolysis extent of the two species were increased as the increasing of delignification. Especially, the hydrolysis extent of hardwood was more higher than that of softwood. The maximum hydrolysis extent were 89.8% and 71.1%, respectively.