Advertising

Fructose: the fruit sugar

The structure displayed here is α-D-Fructofuranose, a ring form of fructose. Fructose is optically active (stereoisomer) and belongs to the category of monosaccharides (simple sugars); more precisely, it is a hexose (6 C atom). Fructose is also a ketose because of its ketone group. Fructose has the chemical formula C6H12O6. In its crystalline form it is present as fructopyranose, bound as fructofuranose.

In nature, fructose is present especially in plants (fruits). It is absorbed via the GLUT-5 transporter and metabolised in the liver (glycolysis). Due to its slower absorption into the bloodstream it is also used in dietetic food products intended for those with diabetes mellitus type II as a substitute for the faster acting sugars such as cane sugar and beet sugar (sucrose) that are mostly used.

fruktose_struktur

Sources:
Stryer, L., Biochemie, Specktrum Akademischer Verlag, 4. Auflage
Beliz, H.D., Lehrbuch der Lebensmittelchemie, Springer Verlag, 2001.

login

Register
Remember Me
Forgot username  Forgot password

Advertising

Advertising

Certifications & Quality

This website is certified by Health On the Net Foundation. Click to verify. This site complies with the HONcode standard for trustworthy health information: verify here.

quality criteria logoThe information provided is created in compliance with a self-imposed quality management procedure

Disclaimer

The information provided on the Food Intolerance Network website is no substitute for a visit to a registered dietician, nutritionist or a doctor. The information that you will find here may not be used as a substitute for professional advice and treatment by a medical professional or approved and registered dieticians. The content of the Food Intolerance Network website may not be used as a basis or means for any form of self-diagnosis.

Go to top