|Jmol-3D images||Image 1|
|Molar mass||176.12 g mol−1|
|Melting point||164 to 172 °C (327 to 342 °F; 437 to 445 K) (decomposes)|
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)|
|(what is: / ?)|
Erythorbic acid (isoascorbic acid, D-araboascorbic acid) is a stereoisomer of ascorbic acid (vitamin C). It is a natural product, a vegetable-derived food additive produced from sucrose. It is denoted by E number E315, and is widely used as an antioxidant in processed foods.
Clinical trials have been conducted to investigate aspects of the nutritional value of erythorbic acid. One such trial investigated the effects of erythorbic acid on vitamin C metabolism in young women; no effect on vitamin C uptake or clearance from the body was found. A later study found that erythorbic acid is a potent enhancer of nonheme-iron absorption.
Since the U.S. Food and Drug Administration banned the use of sulfites as a preservative in foods intended to be eaten fresh (such as salad bar ingredients), the use of erythorbic acid as a food preservative has increased.
It is also used as a preservative in cured meats and frozen vegetables.
- Erythorbic acid and its sodium salt Dr R. Walker, Professor of Food Science, Department of Biochemistry, University of Surrey, England.
- Current EU approved additives and their E Numbers, Food Standards Agency
- Sauberlich, HE; Tamura T; Craig CB; Freeberg LE; Liu T (September 1996). "Effects of erythorbic acid on vitamin C metabolism in young women". American Journal of Clinical Nutrition 64 (3): pp. 336–46. PMID 8780343.
- Fidler, MC; Davidsson L; Zeder C; Hurrell RF (January 2004). "Erythorbic acid is a potent enhancer of nonheme-iron absorption". American Journal of Clinical Nutrition 79 (1): 99–102. PMID 14684404.
- Hui YH (2006). Handbook of Food Science, Technology and Engineering. CRC Press. pp. 83–32. ISBN 0-8493-9848-7.