신갈나무 폐목재의 페놀산 추출액이 상추 발아율과 생장에 미치는 영향

Abstract

The extracts from Quercus monglica were investigated for analysis of sugar composition and content of phenolic acid, also tested seed germination and seed growth of Lactuca sativa. Steam explosion process is one of the most efficient pretreatment method for the utilization of lignocellulose biomass. The steam explosion at PT 25-9 from Q. monglica showed the highest content of glucose at 92.4%. And content of xylose in PT 25-3 condition from Q. monglica showed the highest (18.6%). The highest content of extracts from the exploded Q. monglica (PT 25-6) was obtained about 207 mg in hot water extraction at 120oC for 60 minute. And, the highest content of phenolic acid from the pretreated Q. monglica (PT 25-9) was obtained about 49 mg in hot water extraction at 120oC for 60 minute. The best condition of steam explosion method for seed germination and seed growth of L. sativa was 25 Kgf/cm2 pressure for 9 minute. The relative seed germination of L. sativa showed 0.2% was threshold concentration. The germination rates of L. sativa was inhibited to treatment of 0.4% extract pretreated Q. monglica. But The germination rates of L. sativa showed stimulation in 0.2% and 0.1% extract pretreated Q. monglica. Seedling growth was excellent in the 0.2% extract pretreated Q. monglica. Accordingly, it is suggested that 0.2% concentration seems the most desirable when planted within these three concentration of extract from pretreated Q. monglica. The sesults of the present study led to the conclusion that the extracts of phenolic acid from waste woody biomass (Q. monglica) had positive effects on the germination and seedling growth of L. sativa.