CHEMICAL CHARACTERISTICS OF OLEORESINS FROM CHINESE PINE SPECIES

Chemical studies on the oleoresins from 22 species of Chinese pines sh owed that alpha-pinene, beta-pinene, limonene, longifolene, caryophyll ene, pimaric acid, communic acid, sandaracopimaric acid, isopimaric ac id, palustric/levopimaric acids, dehydroabietic acid, abietic acid and neoabietic acid were among the main constituents. Each of the pine ol eoresins in this study had unique characteristics in the composition o f its oleoresin. The presence of lambertianic acid was the main differ ence between oleoresins of sect. Strobus and sect. Pinus. Communic aci d and cembrene were detected for the first time in Chinese oleoresins.