How is high fructose corn syrup made?
The corn wet milling industry makes high fructose corn syrup from corn starch using a series of unit processes that include steeping corn to soften the hard kernel; physical separation of the kernel into its separate components—starch, corn hull, protein and oil; breakdown of the starch to glucose; use of enzymes to invert glucose to fructose; removal of impurities; and blending of glucose and fructose to make HFCS-42 and HFCS-55.2