How glucose syrup is made ?|FAQ

How glucose syrup is made ?

2018-07-02 /

Glucose syrup is widely used in food industry. How glucose syrup is made? Usually the raw materials are starch (corn starch, cassava starch etc) and rice. Production procedures are as follows: raw material starch→mixing starch with water to get starch slurry→liquefaction process→deproteinization process→saccharification process→decolorization process→decarburization process→ion exchange process to eliminate ion impurities→evaporation process to get certain concentration glucose liquid→final products filling and packing.

How glucose syrup is made in high quality? Firstly we should make sure good quality of raw material starch. Second key point is to get high working efficiency equipment. The last but not least important factor is that processing technology applied in glucose syrup production line. Glucose syrup processing equipment is not complicated and many manufacturers can supply the kind of machines. What glucose manufacturer should attach great importance is the processing technology.

In latest technology, how glucose syrup is made? To put it simply, the whole process can be regarded as chemical transformation process, which makes starch polysaccharide converted into glucose monosaccharide. How glucose syrup is made consists of six steps as bellow:

1st step of glucose syrup manufacturing process is mixing process. Mixing starch with water to get certain required density starch slurry. It's better to use soften water, which can reduce ion impurities. The mixing process finished in certain temperature and PE value.

2nd step is liquefaction process. Jet cooking machine and liquefaction tank are used in the procedure. Jet cooking makes temperature increase quickly in short time, resulting in starch granules absorb water quickly and expend together to get transparent paste liquid, which is called gelatinization. Gelatinization provide better condition for the later liquefaction process. In liquefaction process, after adding enzyme, temperature is maintained at required temperature to make starch slurry liquefied completely. All the reaction will be proceed in the liquefaction tank.

Glucose syrup saccharification tank

3rd step is saccharification process. It's the key process to how glucose syrup is made as required, which directly determines DE value of final products. In fact, the saccharification process is to create an environment suitable for saccharification enzymes. The key point is pH and temperature adjustment. The final hydrolysis of the sugars gives a crude saccharification solution.

4th step is decolorization and decarburization process. The purpose of decolorization is to remove organic impurities dissolved in water. Most organic impurities are colored organic impurities. We add powdered activated carbon that has strong adsorption ability to organic impurities. And activated carbon is insoluble in water, and then we can use filter press machine to finish decarburization process. The filter removes the activated carbon as well as removes organic impurities from the sugar solution.

Glucose syrup processing plant

5th step is ion exchange process. After the water-insoluble impurities and organic impurities in the sugar liquid are removed, there still contain many inorganic impurities dissolved in water. These impurities exist in the form of cations and anions in water. The purpose of ion exchange is to remove these water-soluble inorganic impurities.

The last 6th step is evaporation process. After previous steps, impurities in the liquid glucose are mostly removed. The last step will use evaporator to remove excess water and get final glucose syrup in certain density. Three-effect syrup evaporator is commonly used.

To sum up, how glucose syrup is made consists of three main parts: saccharification, impurities-removing and concentration. Strictly speaking, each process can influence the quality of final products.