Last update 2022-05-27

High Fructose Syrup Production Process

HFCS 42 Process description

HFCS 42 Process description

Dextrose is enzymatically isomerized to fructose by passing through isomerization column.

(1) Preparation:

To facilitate isomerization of dextrose to a 42% fructose solution, salts such as BSS, Na2CO3, MgSO4 are need be added into dextrose syrup.

(2) Isomerization:

The dextrose syrup goes though the isomerase enzyme column where convert dextrose to fructose, under conventional conditions, it is generally produces a syrup containing a minimum of 42% fructose.

(3) Decolorization:

 Carbon (granula or powder) or adsorbent resins remove color, flavor and odor compounds from 42% fructose syrup, generally, carbon is often used ahead of ion exchange whereas adsorbent resins are used after deionization.

(4) Deionization:

The salts which are added to facilitate increase enzyme activity must be removed after isomerization via deionization to produce a pure sweetener for sale or subsequent enrichment to a 55% fructose solution.

(5) Evaporation

Low ds 42% fructose syrup is concentrated to solid 70.5%~71.5% by evaporation of water.

HFCS 55 Process description

HFCS 55 Process description

Separating the F42 by chromatography can obtain high fructose glucose syrup (HFGS). Mixing the HFGS and F42 in a certain proportion can produce F55.

(1) Chromatographic separation: Transport 50% F42 to Chromatographic separation column, run according to the specific procedure, glucose and fructose will be separated, F90 fructose-glucose syrup can be obtained.

(2) Mixing: Mixing F42 and F90 in a certain proportion to produce F55.

(3) Decolorization: The F55 needs to be purified by decolorization.

(4) Mixed bed: The decolorized F55 needs to be purified to remove the salt and other impurities by mixed bed, so as to guarantee the quality of final product.

(5) Sterilization: Use special filter to remove bacteria from F55 product, so that the product can meet the standard requirement.

(6) Evaporation: After sterilization, use evaporation to increase the concentrate of F55 product.

Pure Crystalline Fructose (PCF) Process description

(1) Chromatographic separation: Sending 60% F42 syrup to Chromatographic separation column, run according to the specific procedure, glucose and fructose will be separated, F95 will be prouced.

(2) F95 Refinery: Through active carbon and ion exchange resin to remove impurities and bad odour for purification.

(3) Evaporation: Purified F95 syrup is sent to evaporator for concentration to the required DS.

(4) Crystallization: The concentrated F95 syrup is sent to crystallizer for crystallizaiton. The crystalline fructose will be formed by controlling suitable temperature.

(5) Separation: After crystallization the wet crystalline fructose will be separated with mother liquid by separator.

(6) Drying: The wet crystalline fructose is sent to dryer for removing extra moisture to match finished product requirement.

Plant 3D drawing