High fructose corn syrup (HFCS) is a liquid alternative sweetener to sucrose that is made from corn, the
“king of crops” using chemicals (caustic soda, hydrochloric acid) and enzymes (-amylase and
glucoamylase) to hydrolyze corn starch to corn syrup containing mostly glucose and a third enzyme
(glucose isomerase) to isomerize glucose in corn syrup to fructose to yield HFCS products classified
according to their fructose content: HFCS-90, HFCS-42, and HFCS-55.