Comparisons of Chemical and Biological Studies of Essential Oils of Stem, Leaves and Seeds of Zanthoxylum alatum Roxb growing wild in the State of Azad Jammu and Kashmir, Pakistan

The fresh plant material of stem, leaves and seeds of Zanthoxylum alatum Roxb (Rutaceae) collected at high altitude of District Kotli, the State of Azad Jammu & Kashmir and subjected to Clevenger type hydro distillation for the extraction of essential oils. The essential oils were characterized by using gas chromatography-mass spectrometry (GC-MS) technique. Twenty five components have been identified from the stem yielded about 95.8 % of the total essential oils, the major constituents were Terpinen-4-ol (30.47%), β -Terpenene (16.16%), eighteen components identified from the leaves which yields about 89.08 % of the oil, Tridecanone (25%), Isohexane (21.4%), Eucalyptol (8.5%) and Linalool (7.21%) were the major constituents. From the seeds of Z. alatum twenty components have been identified which yielded about 98.5 % of the oil; major components were Linalool (45%), Isohexnae (38%), Methyl-10-octadecanoate (6.25%). The essential oils show significant antioxidant, antimicrobial activities. The essential oils of Z. alatum are expected to be used as traditional herbal system of medicine.