Abstract
IT has generally been assumed that the only carboxylic acid present in the fruit of Bramley's Seedling apple is malic acid; but in 1949, when examining chromatograms run in n-butanol–formic acid–water (40 : 10 : 50 v/v1) of methyl alcohol extracts of pulp tissue of young Bramley's Seedling apples, we noted that several spots having an acid reaction to bromophenol blue appeared on the chromatograms.
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References
Lugg, J. W. H., and Overell, B. T., Aust. J. Sci. Res., 1 A, 98 (1948).
Feigl, F., and Anger, V., Microchemie, 11, 35 (1935).
Bate-Smith, E. C., and Westall, R. G., Biochem. Biophys. Acta, 4, 427 (1950).
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HULME, A., SWAIN, T. Organic Acids of the Apple Fruit. Nature 168, 254 (1951). https://doi.org/10.1038/168254a0
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DOI: https://doi.org/10.1038/168254a0
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