蔗糖异构酶催化生产异麦芽酮糖研究进展

Advances in isomaltulose production catalyzed by sucrose isomerase

摘要:

作为蔗糖的一种异构体, 异麦芽酮糖具有许多独特的生理功能, 例如非致龋齿性、益生元特性、适合糖尿病人使用以及对大多数细菌和酵母的抗性等, 因而受到广泛关注。异麦芽酮糖主要是通过蔗糖异构酶催化蔗糖转化形成, 反应中同时生成的海藻酮糖以及少量的葡萄糖和果糖, 给工业生产带来困扰。简要论述异麦芽酮糖的特性、生理功能及其生产中存在的问题, 重点论述蔗糖异构酶催化蔗糖转化的机理, 为异麦芽酮糖在食品工业中的开发利用提供参考。

Abstract:

Isomaltulose as a functional isomer of sucrose has attracted much more attention in the industrial application due to its attractive features such as non-cariogenic, prebiotic and diabetics-acceptable nutrient and resistance to most bacteria and yeasts. It has been proved that sucrose isomerase not only transforms sucrose to isomaltulose and trehalulose, but also produce a small amount of glucose and fructose as by-products, which is a considerable industrial problem because elaborate purification are necessary to remove them. In this paper, we discuss the characteristics and functions of isomaltulose as well as potential problems in its production. Particularly, we focus on the catalytic mechanism of sucrose conversion by sucrose isomerase, which is in favour of developing isomaltulose in the application of foodstuff.