Fructose is metabolized or processed by different enzymes in our body as compared to glucose. These enzymes can very easily be over whelmed by high amounts of fructose in our diet. This makes sense, since it would take several to many servings of fruit to equal the amount of fructose I have seen in baked goods, sodas, and snack bars. There is also some evidence that suggests that fructose is not only as unhealthy as regular sugar, but might actually be even worse. In other words, they do not grow special types of corn to provide this high fructose corn syrup.
Corn syrup is made by chemically splitting corn starch with a weak acid.
The corn syrup then undergoes further processing to result in high fructose corn syrup. Dextrose and Maltodextrans These do not sound as sexy as the above sweeteners and they are not. Dextrose is just the mirror image form of glucose. It is commercially made from corn, sugar cane, or other starches. Maltodextrans are polysaccharides or glucose molecules strung together in long chains.