Abstract
BATE-SMITH1 observed that a methanol extract of white flowers of Camellia japonica turned red after heating with dilute hydrochloric acid. This suggests that leuco-anthocyanin is present in the white flowers. By the same procedure I found that red flowers of several horticultural varieties of C. japonica contained leuco-anthocyanin yielding cyanidin, as well as a glycoside of cyanidin.
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References
Bate-Smith, E. C., J. Exp. Bot., 4, 1 (1953).
Endo, T., Jap. J. Bot., 14, 187 (1954).
Pigman, W., et al., Tappi, 36, 4 (1953).
Robinson, G. M., and Robinson, R., J. Chem. Soc., 744 (1935).
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ENDO, T. Separation of Anthocyanin and Leucoanthocyanin in Flowers of Camellia japonica . Nature 182, 801 (1958). https://doi.org/10.1038/182801a0
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DOI: https://doi.org/10.1038/182801a0
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