CAJ | 학술논문

以马铃薯淀粉为原料,丁二酸酐为酯化剂合成低取代度酯化淀粉的最佳合成条件.试验采用湿法合成工艺,以产物取代度的高低水平为指标进行合成条件的筛选,并分析测定了产物的黏度、透明度.结果表明:合成的最佳工艺条件为反应体系pH9.0、丁二酸酐用量4%、反应时间60 min、反应温度30℃;随着产物取代度的增加,其黏度和透明度均有提高且呈上升趋势;酯化淀粉的黏度和透明度均高于马铃薯原淀粉及玉米酯化淀粉.
이마령서정분위원료,정이산항위지화제합성저취대도지화정분적최가합성조건.시험채용습법합성공예,이산물취대도적고저수평위지표진행합성조건적사선,병분석측정료산물적점도、투명도.결과표명:합성적최가공예조건위반응체계pH9.0、정이산항용량4%、반응시간60 min、반응온도30℃;수착산물취대도적증가,기점도화투명도균유제고차정상승추세;지화정분적점도화투명도균고우마령서원정분급옥미지화정분.
Preparation of esterified starch with low substitution degree was studied by using potato starch as raw material, succinic acid anhydride as esterifying reagent, water as solvent, substitution degree as evaluating index. The viscosity and transparency of product were determined and analyzed. Results : The proper reaction conditions are reaction time 60 min, reaction temperature 30 ℃, pH 9.0, succinic acid anhydride dose 4%. The product transpar-ency and viscosity trend increase with substitution degree rising. The transparency and viscosity of the esterified pota-to starch are better than raw potato starch and esterified corn starch.