Detection and Identification of the Polyphenoloxidase Substrate of the Banana
Detection and Identification of the Polyphenoloxidase Substrate of the Banana"
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Letter Published: 04 July 1959 Detection and Identification of the Polyphenoloxidase Substrate of the Banana L. A. GRIFFITHS1 Nature volume 184, pages 58–59 (1959)Cite this article
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AbstractBLACKENING of the fruit of the banana may occur during cultivation, when the cause is usually of pathological origin, or during storage if ripening is not adequately controlled. The
biochemical changes involved in the blackening of the fruit have received little study, although evidence for the existence of an enzyme system in the fruit of the banana capable of
oxidizing substances of the catechol type was presented by Onslow1 in 1920. The existence of flavonoid compounds in the edible banana has been reported2,3. Robinson2 detected delphinidin in
the hydrolysis products of the pulp of an edible banana while Simmonds3, who has described the anthocyanin pigments of the bracts of a number of banana species in detail, reported that the
skin and pulp of fruit of the edible varieties contained large amounts of leucoanthocyanins. Indirect evidence was, however, obtained3 that the polyphenol oxidase system of the banana was
unable to act on the leucoanthocyanins present to produce brown colorations. Recently, the presence of serotonin and related compounds in the fruit of the banana was reported by Waalkes et
al.5. The ability of these compounds to serve as substrates for polyphenoloxidase was not, however, explored.
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of fruits and leaves of apple, pear and quince Article Open access 12 October 2021 References Onslow, M. W., Biochem. J., 14, 541 (1920).
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Robinson, G. M., J. Chem. Soc., 1157 (1937).
Simmonds, N. W., Ann. Bot., N.S., 18, 471 (1954).
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Swain, T., Biochem. J., 53, 200 (1953).
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Waalkes, T. P., Sjoerdsma, A., Creveling, C. R., Weissbach, H., and Udenfried, S., Science, 127, 648 (1958).
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Griffiths, L. A., Nature, 180, 1373 (1957).
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Author informationAuthors and Affiliations Regional Research Centre, Imperial College of Tropical Agriculture, Trinidad, British West Indies
L. A. GRIFFITHS
AuthorsL. A. GRIFFITHSView author publications You can also search for this author inPubMed Google Scholar
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About this articleCite this article GRIFFITHS, L. Detection and Identification of the Polyphenoloxidase Substrate of the Banana. Nature 184, 58–59 (1959). https://doi.org/10.1038/184058a0
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Issue Date: 04 July 1959
DOI: https://doi.org/10.1038/184058a0
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