Cymbopogon winterianus Jowitt ex Bor - Poaceae - citronella grass, Citronella Gras
„Perennial from a shallowly rooted rhizome. Culms tufted, robust, up to 2 m or more tall. Leaf sheaths glabrous, reddish inside; leaf blades relatively thin, drooping for 2/3 of their length, 40–80(–100) × 1–1.5(–2.5) cm … This species, known only from cultivation, produces citronella oil of a higher quality than that from Cymbopogon nardus.“
Cympogon winterianus is the source of Java-type citronella oil („Mahapengri“), owning a fresh, citrusy, somewhat lemon-like odor. Main constituents of the essential oil are citronellal (32-45%, best quality greater 38%), geraniol (12-18%, best quality greater 16%), citronellol (11-15%, best quality greater 12%), geranyl acetate (3-8%), citronellyl acetate (2-4%), and limonene (2-5%).
„It has an image of a cheap pefumery product for household soap, but in low dosage it can impart freshness even in high-class perfume… Java citronella oil contains not less than 35% alcohols and not less than 35% aldehydes…“
[Boelens, Mans H. „Sensory and chemical evaluation of tropical grass oils.“ Perfumer & flavorist 19.2 (1994): 29-45]
The essential oil of the leaves contained limonene 3.4%, citronellal 40.2%, citronellol 13.3%, geraniol 17.7%, elemene 2.7%, citronellyl acetate 4.5%, δ-cadinene 2.8%, geranyl acetate 4.6%, and elemol 4.7%.
[Fractionation of citronella (Cymbopogon winterianus) essential oiland concentrated orange oil phase by batch vacuum distillation, Stephani C. Beneti, Eline Rosset, Marcos L. Corazza, Caren D. Frizzo, Marco Di Luccio, J. Vladimir Oliveira, Journal of Food Engineering 102 (2011) 348–354] http://de.scribd.com/doc/56036245/Citronella