蜡质玉米淀粉制备乙酰化二淀粉磷酸酯的工艺优化  

Optimization of Preparation of Acetyl Disstarch Phosphate from Waxy Corn Starch

作　　者：西芳 刘馨远 曹国强 XI Fang;LIU Xin-yuan;CAO Guo-qiang(Heilongjiang Jinxiang Bioehenlical Co.,Ltd.,Heilongjiang Harbin 150000,China)

机构地区：[1]黑龙江金象生化有限责任公司,黑龙江哈尔滨150000

出　　处：《广州化工》2023年第8期80-82,104,共4页GuangZhou Chemical Industry

摘　　要：复合变性淀粉可以同时具有交联、酯化变性的性能优势,被广泛应用于酱料、速冻食品、奶及肉制品等食品中。探讨蜡质玉米淀粉交联酯化过程中各因素对反应效果的影响,通过单因素分析,以取代度为衡量标准,得出最佳反应条件。交联反应:三偏磷酸钠加量0.7%,pH为10.0、反应时间2.0 h,反应温度45℃;酯化反应:醋酸酐加量3.5%、pH为8.0、反应时间1.8 h、反应温度35℃,此条件下制备的乙酰化二淀粉磷酸酯磷含量0.45%,乙酰基含量0.95%。Compound modified starch has the advantages of crosslinking and esterification at the same time,and is widely used in sauces,frozen foods,milk and meat products.To investigate the influence of various factors on the reaction effect during the cross-linking esterification of waxy corn starch,through single factor analysis,the optimal reaction conditions were obtained with the degree of substitution as the measurement standard.Crosslinking reaction was as follows:adding 0.7%sodium trimetaphosphate,pH=10.0,reaction time was 2.0 h,reaction temperature was 45℃.Esterification reaction was as follows:addition of acetic anhydride was 3.5%,pH=8.0,reaction time was 1.8 h,reaction temperature was 35℃.Under these conditions,the phosphate ester of acetyl disstarch was prepared with 0.45%phosphorus and 0.95%acetyl.

关 键 词：蜡质玉米淀粉 交联 酯化 取代度 复合变性淀粉 

分 类 号：TQ920.4[轻工技术与工程—发酵工程]