Original Articles

Pelargonium tomentosum: A potential source of peppermint-scented essential oil

Published in: South African Journal of Plant and Soil
Volume 7, issue 1, 1990 , pages: 36–39
DOI: 10.1080/02571862.1990.10634534
Author(s): F.-E. Demarne, France, J., J.A. van der WaltDepartment of Botany, Republic of South Africa


A synopsis of the nomenclature and morphological features of Pelargonium tomentosum Jacq. (2n=44) is presented. The structure of the trichomes is described in detail and the composition of the essential oil is tabulated. The main components of the essential oil are (-)-isomenthone (61–62%) and (+)-menthone (25–27%), the rest being terpenic hydrocarbons. It is concluded that P. tomentosum has the potential to become a new crop plant for the production of natural peppermint-scented essential oil in South Africa.

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