The chemical composition of the essential oil obtained from pine cones of Pinus koraiensis and Pinus sylvestris from northeast China was analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS), and 35 and 31 components were identified, respectively. α-pinene (35.2%), limonene (18.4%), β-pinene (8.7%), β-caryophyllene (3.5%) and myrcene (3.0%) were the main components in P. koraiensis cone oil. Aromadendrene (20.2%), α-pinene (18.5%), α-longipinene (10.5%) and α-terpineol (5.5%) were the main components in P. sylvestris cone oil. The antioxidant activity of the oils from P. koraiensis and P. sylvestris was evaluated using the DPPH.
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Yang et al. (2010) studied this question.
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