Abstract
PAPER chromatography has revealed the presence in tea-leaf of a large number of substances giving a yellow colour on the chromatogram on exposure to ammonia vapour. These are regarded as anthoxanthins, and two of them have been identified as rutin and quercitrin1. Chromatograms of fermented tea show the same pattern of anthoxanthin spots, which suggests that these substances are not oxidized enzymically by the tea-oxidase, although some of them presumably contain catechol or pyrogallol groupings in their molecules.
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References
Roberts, E. A. H., and Wood, D. J. (results submitted to Biochem. J.).
Roberts, E. A. H., and Wood, D. J., Biochem. J., 47, 175 (1950).
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ROBERTS, E., WOOD, D. Oxidation of Anthoxanthins by Tea-Oxidase. Nature 167, 608 (1951). https://doi.org/10.1038/167608a0
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DOI: https://doi.org/10.1038/167608a0
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