Production process of high fructose corn syrup

Abstract

The invention provides a production process of high fructose corn syrup, which comprises the following steps that: adding amylase into starch to obtain hydrolysised starch, and then liquefying at high temperature; filtering and deslagging a liquefied product and adding glucolase to be glycated; carrying out the first time of decoloring, filtration, ion exchange and impurity removal to the glycated product; adding isomerase into discharge liquid so that part of the glucose is converted into fructose through isomerism; and evaporating and concentrating feed liquid after the second time of ion exchange, impurity removal, decoloring and filtration to obtain the high fructose corn syrup. Simultaneously, the production process neutralizes the initially discharged material with higher pH value by decoloring and filtration, thereby reducing the used amount of auxiliary materials, and controlling the production of color substances during production. In addition, after the process is changed, an ion-exchange column does not need to be regenerated in advance. The high fructose corn syrup product obtained from the production process has stable quality, saves cost and has very strong practicality.

Description

technical field [0001] The invention belongs to the field of syrup preparation, and specifically refers to a production process of fructose syrup. Background technique [0002] The basis of fructose syrup production process is to produce glucose by double enzyme method, and then use glucose isomerase to convert part of the glucose into fructose to obtain a mixed syrup containing about 42% fructose, about 51% glucose, and about 7% oligosaccharides. [0003] Existing production processes such as figure 2 As shown, amylase is added to the raw rice to catalyze the hydrolysis of the starch in the rice, and then the rice slurry is liquefied at high temperature, then glucose is added to saccharify it into glucose, and then activated carbon is added for decolorization and filtered, and then it is passed through an ion exchange column. Ion exchange for the first time to remove impurities, then pre-concentrate, add isomerase to isomerize, then add activated carbon for second decolori...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned existing process, the initial discharge after the first ion exchange needs to be pre-concentrated to about 42% of dry matter before adding auxiliary materials to adjust the pH value. The process is more complicated and the cost is also higher.

In addition, in the second ion exchange process, before the ion exchange column fails, due to the low pH value, the color of the discharged material will be deepened, which cannot meet the requirements of colorless and transparent products, so the ion exchange column needs to be regenerated in advance. Increase the pH value, the process is cumbersome

Images