MONOTERPENES, FATTY AND RESIN ACIDS OF PINUS EDULIS AND PINUS ALBICAULIS

The sapwood and heartwood of pinyon pine (Pinus edulis) and whitebark pine (P. albicaulis) were examined for monoterpenes, fatty and resin acids. The principal qualitative differences between the terpene composition of these pines are the presence of limonene in pinyon pine and its apparent absence in whitebark pine, and the presence of α-phellandrene in whitebark pine and its possible absence in pinyon pine. Quantitatively, the principal difference appears to be the predominance of α-pinene in pinyon pine, and the high percentage of δ3-carene in whitebark pine. Among acidic components, the main qualitative difference is the presence of δ8,15-isopimaric acid in pinyon pine, and its apparent absence in whitebark pine. © 1970.