响应面法优化辛烯基琥珀酸淀粉酯的制备工艺  

Optimization of Octenyl Succinic Anhydride Modified Starch by Response Surface Analysis

作　　者：吴海燕[1,2] 

机构地区：[1]南通农业职业技术学院生物工程系,南通226007 [2]南通市农副产品加工技术协会,南通226000

出　　处：《中国粮油学报》2013年第11期80-85,共6页Journal of the Chinese Cereals and Oils Association

基　　金：南通市科技创新计划(AL2008014);南通市农村科技创新及产业化(HL2012025)

摘　　要：以小麦淀粉为原料,采用响应面法对辛烯基琥珀酸淀粉酯化反应的工艺进行优化,并利用红外光谱仪对辛烯基琥珀酸淀粉酯进行结构表征。结果表明,影响酯化反应的主要因素是含水量、辛烯基琥珀酸酐(OSA)的用量、碱(Na2CO3)的用量;酯化反应的最佳条件为:酸酐用无水乙醇稀释5倍;反应时间2 h;反应温度45℃;Na2CO3的用量1.5%;OSA的量3%,水分含量为18%。此条件下制得取代度为0.022 1的辛烯基琥珀酸淀粉酯。红外谱图分析表明,原淀粉的基本结构未被破坏,在1 720、1 576 cm-1出现了辛烯基琥珀酸淀粉酯的特征吸收峰。The preparation of octylene alkenyl succinic anhydride （OSA） starches from wheat starch was studied by response surface analysis （RSA）. The physicochemical properties of the products were determined by means of Fourier transform infrared （ FT - IR） spectroscopy. The results showed that the major influential factors of esterification were ： amount of water, OSA and alkali. The optimum condition was ： dilution of OSA 3 times with alcohol, reaction period 2.0 h, reaction temperature 45 ℃, amount of OSA 3 % （in proportion to starch）, amount of Na2 CO3 1.5 % （in proportion to starch）,water content 18%. The DS about 0. 022 1 of octylene alkenyl succinic anhydride modified starch （SDS） was produced in this condition. FT - IR spectroscopy showed characteristic absorption of SDS at 1 720 and 1 576 cm^-1

关 键 词：响应面法 小麦淀粉 辛烯基琥珀酸淀粉酯 红外光谱 

分 类 号：TS235[轻工技术与工程—粮食、油脂及植物蛋白工程]