for that of C.
nardus. The in vitro cytotoxicity bioassays on human epidermic cell line HaCaT
revealed that the toxicity of the essential oil from C. citratus (IC50: 150 μL.mL-1)
was higher than that of the essential oil from C. nardus (IC50: 450 μL.mL-1).
Pure commercial neral, geranial, and citronellal standards showed
respectively the following IC50 values: 100, 250 and 300 μL.mL-1).