Volatile constituents of Peganum harmala (Zygophyllaceae)

Fresh and dry Peganum harmala from Morocco were investigated for volatile c omponents. Thirty-one volatile constituents were identified from aerial org ans (leaves and stems) and roots. The dry parts were qualitatively richer i n volatiles than the fresh ones. The leaves contained more volatile molecul es than stems and roots. The main constituents were propylic acid and 2,3-d ihydiobenzofurane identified in both fresh and dry materials, 3-octanone pr esent in the aerial parts, and isovanillin detected only in dry P. harmala organs.