Enzyme-Catalyzed Breakdown of Dehydroascorbic Acid in Plant Tissue |
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| Authors: | C. P. TEWARI P. S. KRISHNAN |
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| Affiliation: | Division of Biochemistry, Lucknow University, Lucknow, U.P., India |
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| Abstract: | Homogenates of plant material were examined for enzymatic delactonization of dehydroascorbic acid and oxidation of diketogulonic acid. Bitter gourd fruit, cauliflower, and the leaves of the tapioca plant contain an enzyme that brings about conversion of dehydroascorbic acid to diketogulonic acid. Tapioca leaves are able to effect, in addition, a significant enzyme-catalyzed degradation of diketogulonic acid. The 1eaves of the tapioca plant contain some material that stabilizes ascorbic acid against oxidation to dehydroascorbic acid during homogenization in a Waring blender. |
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