Production process of concentrated solution of lactulose

Abstract

The invention discloses a production process of a concentrated solution of lactulose. The production process comprises the preparation of a lactulose solution and the preparation of the concentrated solution of lactulose, and in particular comprises the following steps: (1) cleaning, sterilization and inspection of reaction devices and a working place; (2) material weighing and mixing; (3) isomerization reaction; (4) acidification and crystallization; (5) filtering and washing; (6) primary concentration; (7) purification by use of resin; (8) secondary concentration; (9) decoloring; (10) press filtering and packaging, wherein the formula of the isomerization reaction is shown in the specification. The process is simple in flow and convenient to operate; lactose and boric acid are taken as the raw materials for the isomerization reaction; the boric acid and salts can be effectively removed by virtue of filtering and eluting separation; the production process has the advantages of high lactulose yield, no three wastes difficult to treat, simple separation and purification, and the like, and is suitable for the preparation of the lactulose and the concentrated solution thereof in industrial production, and wide in application prospect.

Description

technical field [0001] The invention relates to the technical field of functional sugar preparation, in particular to a production process of lactulose concentrated solution. Background technique [0002] Lactulose Concentrate is an aqueous solution of 4-O-β-D-galactopyranosyl-D-fructofuranose, containing lactulose (C 12 h 22 o 11 ) should be 634 ~ 700mg / ml. It is a colorless or light yellow to brown clear viscous liquid; odorless and sweet; its molecular structure is: [0003] [0004] Lactulose is a bifidobacterium-promoting factor and has important applications in medical clinics. Most of the industry uses lactose as a raw material to prepare lactulose. At present, the preparation methods of lactulose generally include the following several types: one, using strong alkaline reagents such as NaOH, KOH, Mg(OH) 2 or organic base triethylamine for isomerization reaction; secondly, use weak basic reagents such as alkaline magnesium salt, alkali or alkaline earth metal...

AI Technical Summary

Problems solved by technology

The above method has disadvantages such as low yield of lactulose, difficulty in handling the three wastes produced, and difficulty in separation and purification, and is not suitable for the preparation of lactulose and its concentrated solution in industrial production.

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