Inhibition of oxidation of ascorbic acid by EDTA

Rao, M. V. L. ; Sastry, L. V. L. ; Srinivasan, M. ; Subrahmanyan, V. (1959) Inhibition of oxidation of ascorbic acid by EDTA Journal of the Science of Food and Agriculture, 10 (8). pp. 436-441. ISSN 0022-5142

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Addition of small amounts of EDTA to acidified solutions of ascorbic acid, completely protects the vitamin against copper-catalysed aerobic oxidation for over 6 days at room temperature. In the absence of acid, excess EDTA acts as a pro-oxidant for the vitamin. Under optimal conditions solutions of ascorbic acid containing EDTA could be heated on the water-bath to complete evaporation without any loss of the vitamin.

Item Type:Article
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