2. Material and methods
2.1. Plant material
Rose-scented geranium (P. graveolens) was grown in the field
station of aromatic and medicinal plants of “Extral Bio” Company,
Chiffa, Blida city (Algeria). The aerial parts of rose geranium were
collected in May 2011 during the flowering period. Identification of
the species was confirmed by the Botanical Laboratory in the National
Institute of Agronomy (Algiers, Algeria).