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    Author(s): Daniel O. Foster; Duane F. Zinkel; Anthony H. Conner
    Date: 1980
    Source: Tappi. Vol. 63, no. 12 (Dec. 1980): pages 103-105.
    Publication Series: Miscellaneous Publication
    PDF: Download Publication  (81 KB)


    The sapwood and heartwood extractives of Douglas fir [Pseudotsuga menziesii (Mirb.) Franco] and the tall oil in the kraft black liquor were characterized. On pulping, isomerization and conversion of conjugated resin acids to dehydroabietic acid was observed. Recovery of both fatty and resin acids from pulping was lower than predicted from the extractive composition. Unusually high sterol esters and a new triterpene alcohol are reported. The lightwood-inducing effect of paraquat is limited.

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    Foster, Daniel O.; Zinkel, Duane F.; Conner, Anthony H. 1980. Tall oil precursors of Douglas fir. Tappi. Vol. 63, no. 12 (Dec. 1980): pages 103-105.


    Pseudotsuga menziesii, extractives, tall oil, paraquat, fatty acids, oleoresins, precursors, resin acids, lightwood, triterpenes, nonsaponifiables

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