Ascorbic Acid (vitamin C)

Photomicrograph of Ascorbic Acid under the microscope

Many plants and most animals, including reptiles, do not need to consume ascorbic acid rich foods and are instead genetically programmed to produce enzymes that convert glucose into vitamin C. Mammals, in particular, possess the L-gulonolactone oxidase enzyme, enabling them to manufacture ascorbic acid from blood glucose in a metabolic cascade of enzymatic action. Curiously, however, the only way that humans, guinea pigs, and several primate species can satisfy their ascorbic acid requirements is to obtain the vitamin in their diets. As it happens, although humans have three essential enzymes required to convert glucose into ascorbic acid, they lack the fourth and final enzyme needed to complete the biochemical pathway.

© 1995-2022 by Michael W. Davidson and The Florida State University. All Rights Reserved. No images, graphics, software, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders. Use of this website means you agree to all of the Legal Terms and Conditions set forth by the owners.
This website is maintained by our
Graphics & Web Programming Team
in collaboration with Optical Microscopy at the
National High Magnetic Field Laboratory.
Last modification: Monday, Jul 02, 2018 at 04:23 PM
Access Count Since March 20, 1998: 38450