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Cymbopogon giganteus Chiov. - syn.Andropogon giganteus Hochst. - Poaceae
giant lemongrass, Großes Zitronengras, Grosses Lemongras

Perennial, up to 3m tall, native to tropical Africa.

The oil of C. giganteus from Burkina Faso contained mainly limonene (17.3%) and the monoterpene alcohols trans-p-mentha-l(7),8-dien-2-ol (17.0%), cis-p-mentha-l(7),8-dien-2-ol (16.5%), trans-p-mentha-2,8-dien-l-ol (13.8%) and cis-p-mentha-2,8-dien-l-ol (9.3%).
[Aromatic plants of tropical west africa. XI. Chemical composition, antioxidant and antiradical properties of the essential oils of three Cymbopogon species from Burkina Faso., Menut, C., Bessiere, J.M., Samate, D., Djibo, A.K., Buchbauer, G., Schopper, B., Journal of Essential Oil Research, 12(2), 2000, 207-212]

„Cymbopogon giganteus plant parts are used in local African medicine for various treatments, such as against rheumatism, fever, cough, skin disorders (decoctions of leaves and flowers) and arterial hypertension… The essential oils of this as well as of other Cymbopogon species (e.g. the more common C. citratus) are important aromatic substances, used for food flavoring and perfumery/cosmetic products, and also show antioxidative and antiradical as well as anti-inflammatory and analgesic properties. Analyses of the oil composition of C. giganteus samples from Africa, such as Burkina Faso, Ivory Coast and Mali, showed p-menthadienols as main constituents.“
Of the more than 55 components identified (in stems, leaves and flowers), the main compounds were cis-p-mentha-1(7),8-dien-2-ol (20.5-29.1%), trans-p-mentha-1(7),8-dien-2-ol (21.6-28.1%), trans-p-mentha-2,8-dien-1-ol (16.3%-22.1%) and cis-p-mentha-2,8-dien-1-ol (4.6%-9.7%). Additional components responsible for the characteristic aroma impressions of C.giganteus oil samples were especially limonene, trans-verbenol and carvone.
[Composition and antimicrobial activity of Cymbopogon giganteus (Hochst.) Chiov. essential flower, leaf and stem oils from Cameroon., Jirovetz, L., Buchbauer, G., Eller, G., Ngassoum, M.B., Maponmetsem, P.M., Journal of Essential Oil Research, 19(5), 2007, 485-489] http://www.holzer-group.at/download.asp?id=392

p-mentha-2,8-dien-1-ol and p-mentha-1(7),8-dien-2-ol (isocarveol)

„The main constituents of Cymbopogon giganteus were cis-p-mentha-1(7),8-dien-2-ol (19.4%), trans-p-mentha-2,8-dien-1-ol (16.4%) and limonene (13.7%)… The antimicrobial activity of the essential oil of Cymbopogon giganteus was found to be moderate on Staphylococcus aureus ATCC 25923 with MIC equal to 0.32 ± 0.02 mg/mL and Escherichia coli ATCC 25922 with MIC equal to 0.64 ± 0.34 mg/mL. This same oil induced the death of 57.84% of ticks at 8μL.“
[Chemical composition and biological activities of essential oils from the leaves of Cymbopogon giganteus Chiov. and Cymbopogon schoenanthus (L.) Spreng (Poaceae) from Benin., Alitonou, G.A., Avlessi, F., Tchobo, F., Noudogbessi, J.P., Tonouhewa, A., Yehouenou, B., Sohounhloue, D.K., International Journal of Biological and Chemical Sciences, 6(4), 2012, 1819-1827] http://www.ajol.info/index.php/ijbcs/article/viewFile/84041/74046