Abstract
Ascorbic acid rapidly decays in plant tissue culture media. Within 50 min to 3 h after preparing 100 mM solutions, ascorbic acid was destroyed. Autoclaving, shaking flasks, high light intensity and increasing pH over a range from 4.5–7 accelerated decay. Ascorbic acid was oxidized to dehydroascorbic acid which also underwent decay. Within 11 h and 15 min after adding ascorbic acid both ascorbic acid and its oxidation product, dehydroascorbic acid, disappeared from medium. Since ascorbic acid is rapidly destroyed in plant tissue culture media it may not exert its effect as an intact molecule. Instead its antioxidant/antibrowning role in plant cell, tissue and organ cultures may be mediated by some product of further oxidation.
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Elmore, H.W., Samples, B., Sharma, S. et al. Influence of cultural and physiochemical factors on ascorbate stability in plant tissue culture media. Plant Cell Tiss Organ Cult 20, 131–135 (1990). https://doi.org/10.1007/BF00114711
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DOI: https://doi.org/10.1007/BF00114711