CAJ | 학술논문

以脱氢松香中分离得到的脱氢枞酸为原料，经酰氯化生成脱氢枞酰氯后，再与壳聚糖的氧化降解产物甲壳低聚糖作用，得到以脱氢枞酰基为亲油基和多聚氨基葡萄糖单元为亲水基的生物表面活性剂；用FT—IR等方法表征了产物结构，元素分析法测定了产物的取代度。结果表明，当以甲烷磺酸-DMSO为反应介质、脱氢枞酸对氨基葡萄糖单元的摩尔比为2．0时，酰化反应主要发生在壳寡糖的伯羟基上，且产物的取代度为15．43％。
이탈경송향중분리득도적탈경종산위원료，경선록화생성탈경종선록후，재여각취당적양화강해산물갑각저취당작용，득도이탈경종선기위친유기화다취안기포도당단원위친수기적생물표면활성제；용FT—IR등방법표정료산물결구，원소분석법측정료산물적취대도。결과표명，당이갑완광산-DMSO위반응개질、탈경종산대안기포도당단원적마이비위2．0시，선화반응주요발생재각과당적백간기상，차산물적취대도위15．43％。
Dehydroabietic acid, which was obtained from dehydrogenated rosin, was reacted with thionyl chloride and transformed into dehydroabietic acid chloride. Meanwhile, chitosan was degraded into chitooligosaccharide through oxidation. Dehydroabietyl chitooligosaccharide, a bio - surfactant with dehydroabietyl group as hydrophobic group and poly - aminoglucose unit as hydro- philic group, was obtained through the reaction between chitooligosaccharide and dehydroabietic acid chloride. The product＇ structure was characterized by FT - IR, and the degree of substitution （DS） was ascertained by elemental analysis. When the MeSO3 H - DMSO was utilized as reaction medium and the mass ratio of dehydroabietic acid versus aminoglucose unit was 2.0, results indicated that the DS was 15.43%. FT- IR spectra showed that the substitution reaction was mainly occurred in the primary hydroxyl group.