Purification method for HFCS (high fructose corn syrup) in fructose production process

Abstract

The invention provides a purification method for HFCS (high fructose corn syrup) in a fructose production process. According to the purification method, the HFCS is obtained after cane juice is subjected to neutralization-hydrolysis in a medicinal anhydrous crystalline fructose production process adopting sugarcane as a raw material, the HFCS is decolorized with activated carbon, subjected to ion exchange twice and then separated through chromatography, a fructose rich liquid is obtained, the fructose rich liquid enters a nanofiltration membrane system, a high-purity fructose dialysate and a high fructose corn concentrated solution are filtered out respectively, the high-purity fructose dialysate is used for producing 99.9% crystalline fructose, and the high fructose corn concentrated solution is applied to beverage-grade high fructose corn. According to the purification method, devices and technological parameters of all working procedures are comprehensively optimized and reasonably matched to meet industrial production requirements, equipment input and production cost are greatly reduced, the one-time yield of industrially produced crystalline fructose products is up to 50%, the technical content of fructose production is increased, and the problem about the situation of heavy dependence on import of high-quality medicinal fructose is solved.

Description

technical field [0001] The invention belongs to the field of medical fructose production technology and equipment, and specifically relates to a process step in a method for industrially producing medical anhydrous crystalline fructose using sugarcane as a raw material. Background technique [0002] Fructose, also known as dextrose, is a monosaccharide, the full name is D-arabinoketohexose, and the molecular formula is C 5 h 12 o 5 CO, whose biochemical name is abbreviated as F, is a prismatic crystal with a melting point of 103-105°C and a sweetness of 1.3-1.8 times that of sucrose (better eaten in cold storage). It is the sweetest natural sweetener and exists in large quantities in free form In honey and fruit juice, it combines with glucose to form sucrose for daily consumption. Pure fructose is a white crystal, easy to absorb moisture, not easy to crystallize, usually viscous liquid, soluble in water and ethanol, insoluble in ether. [0003] Fructose products are usu...

AI Technical Summary

Problems solved by technology

Due to the difficulty of separation, crystallization and drying of fructose, the complex production process, and the large investment in civil engineering and equipment, the large-scale industrial production of crystalline fructose in my country is still in its infancy, and the production cost is high. High-quality medical fructose mainly relies on imports

The fructose content of domestic industrialized production of crystalline fructose products is usually about 99%, the quality is unstable, and the yield of the product is less than 40%.

Moreover, due to the defects of the existing production process, the industrial production of fructose generally has a complete set of production equipment that does not match, and the process parameters are unreasonable, resulting in high energy consumption, low efficiency, unstable quality, and high production costs.

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