Essential oil composition of the needles of Pinus nigra Arnold collected from different localities in Turkey was investigated by GC and GC/MS. The main components in the oils were \alpha-pinene, \beta-pinene, \beta-caryophyllene, and germacrene D.
SEZİK, EKREM; ÜSTÜN, OSMAN; DEMİRCİ, BÜLENT; and BAŞER, KEMAL HÜSNÜ CAN
"Composition of the essential oils of Pinus nigra Arnold from Turkey,"
Turkish Journal of Chemistry: Vol. 34:
2, Article 17.
Available at: https://journals.tubitak.gov.tr/chem/vol34/iss2/17