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Chemical Composition and Antioxidant Activity of Essential Oils from Three Varieties of Carya illinoinensis (Wangenh.) C. Koch Grown in Tunisia

Bouali, Intidhar, Khadhri, Ayda, Dallali, Sana, Albouchi, Ali, Sebei, Houssine, Boukhchina, Sadok, Masson, Eric
Journal of essential oil-bearing plants 2017 v.20 no.6 pp. 1472-1481
2,2-diphenyl-1-picrylhydrazyl, Carya illinoinensis, antioxidant activity, camphene, camphor, chemical composition, chemotypes, essential oils, gas chromatography-mass spectrometry, Tunisia
The composition and antioxidant activity of the essential oil of Carya illinoinensis were evaluated in this research. The yield of essential oils from three varieties was found to vary from 0.024 to 0.03%. GC-MS analysis of the essential oils resulted in the identification of seventy-four compounds representing over 99.97% of the leaf oil. The three essential oils had different chemotypes. The major components identified were camphor (0.0-44.03% of total essential oil), l-fenchone (0.0-28.85%), cis-carvone oxide (0.0-23.64%), β-elemene (0.0-17.66%), cis-z-α-bisabolene epoxide (0.0-16.76%), aromadendrane (0.0-13.31%), camphene (0.0-11.54%), β-eudesmene (0.0-9.41%) and caryophyllen oxide (0.47-8.98%). The antioxidant activity was tested using 2,2-diphenyl-1 picrylhydrazyl (DPPH). The essential oil showed a weak antioxidant activity. This is the first report on the composition and the antioxidant activity of the essential oil of Carya illinoinensis grown in Tunisia.