REVIEW L-Ascorbic acid 6-stearate is the stearate ester of L-ascorbic acid and as well as source of vitamin C, it is used as an antioxidant food additive in margarine (E number E305). The USDA limits its use to 0.02% individually or in conjunction with other antioxidants. L-Ascorbic acid 6-stearate has also been used in the preparation of nanoparticles for drug delivery and the food industry.
Sharma, R.; Pathak, Y. Enzymatic synthesis: acyl ascorbate and its industrial use as a food additive Edited by Laudon, Matthew; Romanowicz, Bart. Nanotech Conference & Expo 2010: An Interdisciplinary Integrative Forum on Nanotechnology, Biotechnology and Microtechnology, Anaheim, CA, United States, June 21-24, 2010. (2010) 1: 79-82.