间苯二酚与蔗糖反应的动力学研究  

Study on the Kinetics of the Reaction between Sucroseand Resorcinol

作　　者：李利军[1] 孔红星[1] 张家仁[1] 赖学寨[1] 

机构地区：[1]广西工学院轻工化工系,广西545006

出　　处：《甘蔗糖业》2004年第1期27-31,16,共6页Sugarcane and Canesugar

摘　　要：本文研究了间苯二酚与蔗糖在盐酸溶液中的反应机理,发现间苯二酚与蔗糖在盐酸溶液中反应,其实质是蔗糖先水解成果糖和葡萄糖,然后果糖在盐酸催化下与间苯二酚反应生成有色物质。实验结果表明,当间苯酚的浓度远大于果糖时,果糖与间苯二酚的反应为准一级反应,其表观活化能为127kJ/mol。推导了蔗糖与间苯二酚反应的动力学方程,提出间苯二酚法测定蔗糖理论依据,与实验结果吻合。According to the experiment results, the mechanism of the reaction between sucrose and resorcinol was discussed, and there is a conclusion that sucrose hydrolyzate-fructose can oxidize esorcinol to produce colored substance. The reaction between fructose and resorcinol is a asi-first-order reaction in hydrochloric acid medium, and the activation energy is 127kJ/mol. On the above basis, the kinetic equation was reduced, and it was proved that absorbency and sucrose concentration is in direct proportion by theory and by experiment results.

关 键 词：间苯二酚 蔗糖 反应机理 盐酸溶液 反应动力学 显色剂 

分 类 号：TS247[轻工技术与工程—制糖工程]