摘要
不同的辛烯基琥珀酸淀粉酯制备方法对其取代度和反应效率有显著影响。通过对3种制备方法的比较,探索出湿法是较好的方法,其最佳反应条件是:质量分数25%的淀粉乳,在温度38℃、pH 8.5的条件下,分批加入经体积分数为95%的酒精稀释的酸酐(体积比为3∶1,酸酐占淀粉干基的质量分数为3%),反应130 min。在此条件下取代度为0.0159,反应效率为68.710%。
Different methods for preparing octenyl succinic cassava starch effected greatly on reaction efficiency (RE) and the degree of substitution (DS). Wet-method was the best one in contrast with other methods. The optimal combinations of modification were as follows: starch concentration 25%(in proportion to aqueous solution of ethanol, W/ W); esterified pH 8.5; esterified temperature 38 ℃, OSA diluted certain times with absolute alcohol (V/V=1:3) was added slowly; esterified time 130 min. Under these conditions, the DS was 0.0159 and the RE was 68.710%. Key words octenyl succinic anhydride (OSA); cassava starch; esterification; degree of substitution (DS); reaction efficiency(RE)
出处
《中国食品学报》
EI
CAS
CSCD
北大核心
2013年第9期113-118,共6页
Journal of Chinese Institute Of Food Science and Technology
基金
国家自然科学基金项目(31130042)
关键词
辛烯基琥珀酸酐
木薯淀粉
酯化反应
取代度
反应效率
octenyl succinic anhydride (OSA)
cassava starch
esterification
degree of substitution (DS)
reactionefficiency(RE)