[01] Hussein A. H. Said-Al Ahl, Medicinal and Aromatic Plants Research Department, National Research Centre, Dokki, Giza, Egypt. [02] Ahmed S. H. Gendy, Horticulture Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt. [03] Ali S. Sabra, Medicinal and Aromatic Plants Research Department, National Research Centre, Dokki, Giza, Egypt. [04] Elsayed A. Omer, Medicinal and Aromatic Plants Research Department, National Research Centre, Dokki, Giza, Egypt. [05] Kirill G. Tkachenko, V. L. Komarov Botanical Institute of the Russian Academy of Sciences, Saint Petersburg, Russia.

Nepeta grandiflora (Lamiaceae) is a perennial plant. It contains essential oils, steroids, tannins, flavonoids. It is used in folk medicine as a general, emollient, during anemia as a substitute for tea. This work reports the essential oil content and its composition of Nepeta grandiflora grown in pots under the natural conditions of the greenhouse of the National Research Center, Egypt, during 2013 and 2014 season and determines their active constituents. The volatile oil content has been analyzed by GC/MS. The GC/MS revealed the presence of p-cymene (43.46%); ç-terpinene (18.58%); carvacrol (12.95%) and o-cymene (10.99%) which represents the main compounds of volatile oil extracted from Nepeta grandiflora flowering herb. Other important compounds were trans-caryophyllene (2.04%), α-thujene(1.69%), α-bisabolene (1.57%) and borneol (1.52%).

Nepeta grandiflora, Essential Oil, P-Cymene, Ç-Terpinene, Carvacrol, O-Cymene

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