what is fructose corn syrup
High fructose corn syrup (HFCS) is a sweetener made from corn and can be found in numerous foods and beverages on grocery store shelves in the United States. High fructose corn syrup is composed of either 42 percent or 55 percent fructose, with the remaining sugars being primarily glucose and higher sugars.In terms of composition, high fructose corn syrup is nearly identical to table sugar (sucrose), which is composed of 50 percent fructose and 50 percent glucose.Glucose is one of the simplest forms of sugar that serves as a building block for most carbohydrates.igh fructose corn syrup is composed of either 42 percent or 55 percent fructose, with the remaining sugars being primarily glucose and higher sugars.