CAJ | 학술논문

本文以稻壳这种在我国来源十分丰富的农业副产物为原料，采用三种方法(乙二醇法、乙醇法、碱法)提取稻壳中的木质素，考察相应处理条件下的木质素提取率、羟基含量来确定提取适宜条件。乙二醇提取法所得木质素的羟基值和产率可以分别达到275．2mg/g和45．2%；乙醇法在适宜的提取条件下得到稻壳基木质素羟基值和产率分别为269．1mg/g 和51．1%；碱溶液提取法可获得羟基值和产率分别为324．7mg/g 和64．1%的碱木质素，无论何种木质素都富含活性官能团为后续再利用提供条件。
본문이도각저충재아국래원십분봉부적농업부산물위원료，채용삼충방법(을이순법、을순법、감법)제취도각중적목질소，고찰상응처리조건하적목질소제취솔、간기함량래학정제취괄의조건。을이순제취법소득목질소적간기치화산솔가이분별체도275．2mg/g화45．2%；을순법재괄의적제취조건하득도도각기목질소간기치화산솔분별위269．1mg/g 화51．1%；감용액제취법가획득간기치화산솔분별위324．7mg/g 화64．1%적감목질소，무론하충목질소도부함활성관능단위후속재이용제공조건。
Rice husk,a very rich by-product in China,was processed with three extraction methods( ethylene glycol,ethanol and al-kali)to produce lignin. The hydroxyl value and lignin yield of the corresponding conditions were investigated in order to find the ap-propriate condition. The first method with ethylene glycol can give the hydroxyl value and yield of 275. 2mg/g and 45. 2%,respec-tively;the second method with ethanol can give the hydroxyl value and yield of 269. 1mg/g and 51. 1%,respectively;the third meth-od with alkali can give the hydroxyl value and yield of 324. 7mg/g and 64. 1%,respectively. Each kind of lignin from three methods is rich in active functional groups which make it convenient to use.