Abstract
CONTRARY to what is true of sap-wood, pine heart-wood cannot be digested by the normal sulphite method. The cause of this has often been discussed. Investigations, especially by Hägglund and his co-workers, eventually disclosed that the cause must lie in the presence of certain substances in the heart-wood which can be extracted by suitable solvents.
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Bacteriological Studies of Pinosylvine, its Monomethyl and Dimethyl Ethers, and Toxicologic Studies of Pinosylvine. Nature 155, 454–455 (1945). https://doi.org/10.1038/155454a0
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DOI: https://doi.org/10.1038/155454a0
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