Method for producing isomaltulose without purification step

Abstract

The invention provides a method for directly producing isomaltulose by condensation crystallization without a separating purification step. The method is characterized in that: in the process of preparing the isomaltulose, the complex processes of separating and purifying the isomaltulose by ion exchange resin and the like are omitted in industrialized production, and the vacuum condensation and crystallization of conversion solution of sucrose are directly performed to obtain the purified isomaltulose. In the method, cell debris containing activity of sucrose isomerase is firstly prepared into a biocatalyst, the sucrose is subjected to biological conversion by catalysis to generate a product of the isomaltulose not containing byproducts such as glucose, fructose and the like, and the conversion solution of sucrose is directly subjected to vacuum condensation, crystallization and drying to produce the crystallized product of the isomaltulose. The method has the advantages of greatly lowering production cost, saving a large amount of process water and simplifying the production process.

Description

technical field [0001] The invention relates to a production technology for preparing isomaltulose by using sucrose as a raw material, and a production process for isomaltulose without separating and removing by-products such as glucose and fructose during the production process of isomaltulose. Background technique [0002] The chemical name of isomaltulose is α-D-glucopyranoside-1,6-D-fructofuranose, which was first found in honey. Because its content is very small, it has not attracted people's attention. The importance of isomaltulose was not gradually recognized until 1957, when this "new" disaccharide compound, isomaltulose, was discovered and crystallized during sugar beet production. Subsequently, the discovery that certain bacteria could convert sucrose into isomaltulose led to extensive research on the edibility and production possibilities of isomaltulose. For those special groups who are not suitable for sugar intake and need to carefully choose sweeteners, the...

AI Technical Summary

Problems solved by technology

However, the conversion products of these sucrose isomerases also contain 2 to 7% by-products such as glucose and fructose, which seriously affect the quality of isomaltulose products, and must be separated and removed in the post-extraction process

In the production process, complex separation and purification processes such as ion exchange resins must be used to remove these impurities, resulting in a substantial increase in production costs, which is an industrialization issue worth considering

Images