fructosemolecuul

Fructose is a simple sugar, or monosaccharide, found in many plants. Its chemical formula is C6H12O6, identical to that of glucose, making it an isomer. However, its molecular structure is arranged differently, which gives it unique properties.

The fructose molecule is a ketohexose, meaning it contains a ketone functional group and has six carbon atoms. Its molecular structure makes it significantly sweeter than glucose and even table sugar, or sucrose. Sucrose is actually a disaccharide composed of one glucose molecule bonded to one fructose molecule.

In its free form, fructose occurs naturally in fruits, honey, and some vegetables. It is also a major component, in the form of high-fructose corn syrup, in many sweetened beverages and processed foods. The body metabolizes fructose differently from glucose; it is primarily processed in the liver.

While fructose from whole fruits is part of a healthy diet due to the accompanying fiber and nutrients, excessive consumption of free fructose, particularly from sugary drinks, has been linked to negative health effects. These can include weight gain and an increased risk of metabolic disorders. Its high sweetness and low cost have made it a widely used ingredient in the modern food industry.