Abstract
SPECTROGRAPHIC analysis of mushrooms by the method described in Nature of April 20, 1929, p. 601, has revealed a remarkable composition. A button mushroom from the Cromer district was divided into skin, white portion, gills, and stem and the parts were dried in a water oven at 100° C. The analyses prove that each part has a high potassium and a low calcium content; the skin contains lithium and it contains most iron. Phosphorus in the dried material varies from about one to three per cent, the gills containing most. The chief interest lies in the presence of silver and copper; all parts contain these, the stem containing least. The spectra of four standards, containing from 0.001 to 0.01 per cent of silver and from 0.002 to 0.02 per cent of copper, and other elements, were photographed on the same plate as the spectra of the parts of the mushroom. Comparison of the spectra proves that the skin, white, and gills contain somewhat more than 0.02 per cent of copper and that all the parts contain decidedly more than 0.01 per cent of silver; the silver content of the gills appears to be not less than 0.05 per cent.
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RAMAGE, H. Mushrooms—Mineral Content. Nature 126, 279 (1930). https://doi.org/10.1038/126279c0
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DOI: https://doi.org/10.1038/126279c0
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