Abstract
IN 1903 Schultz directed attention to the blue, acid-soluble pigment which occurs in the shells of the Californian abalone. Subsequent studies by Schultz, Schultz and Becker1, Kodzuka2 and Lemberg3 have further subdivided the pigments present ; but there has been no agreement as to their identity. Schultz, in his later papers, pointed to the similarity between the visible absorption band of the main pigment (λmax. 622 mµ) and that of the known indigos, and Lemberg identified the pigment provisionally as pyrrole body, since its solubility in dilute acids as greater than that of most indigoids. The pigment as known to give a strong colour reaction with nitrites and with fuming nitric acid. There has been doubt about the exact nature of this reaction, and about the number of pigments responsible for it.
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Rimington, C., Holiday, E. R., and Jope, E. M., Biochem. J., 40, 669 (1946).
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COMFORT, A. Identity of the Shell Pigment of Haliotis cracherodii Leach. Nature 163, 647 (1949). https://doi.org/10.1038/163647a0
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DOI: https://doi.org/10.1038/163647a0
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