Potential Agrochemical and Medicinal Usage of Essential Oils of Pelargonium Species

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Abstract
The essential oils of a number of Pelargonium species, hybrids and cultivars in the family Geraniaceae were screened for agrochemical and pharmacological properties using 25 gram-positive and gram-negative microorganisms, Aspergillus niger, and isolated guinea pig ileum. Substantial agrochemical potential was observed in most hexane extracts, including those from ivy-leaf, zonals, and regals as well as scented leaf species and cultivars. The extracts were analyzed using GC/MS and compounds correlated with the agrochemical and pharmacological activity. No correlation between the agrochemical and pharmacological action and the essential oil composition was noted. The active component could be non-terpenoid. The active principle which caused relaxation in smooth muscle could be developed into an anti-asthmatic or antispasmodic therapeutic.

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