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Citral showed appreciable antimicrobial activity against Gram‐positive and Gram‐negative bacteria as well as fungi. Media composition and inoculum size had no observable effect on activity but alkaline pH increased citral activity. The growth rates of Escherichia coli cultures were reduced at concentrations of citral ≥0·01% v/v while concentrations ≥0·03% v/v produced rapid reduction in viable cells followed by limited regrowth. In a non‐growth medium, 0·08% and 0·1% v/v showed rapid bactericidal effects. Citral may therefore be of preservative use in addition to its other uses in the food, soap and cosmetic industries.

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In an open non-comparative study to evaluate the efficacy and safety of Acalypha wilkesiana ointment in superficial fungal skin diseases, 32 Nigerian patients with clinical and mycological evidence of superficial mycoses were recruited. Twelve patients defaulted and were lost to follow up, while one patient withdrew because of intolerable excoriation at the site of the lesion. Of the 19 patients that completed the trial, clinical cure was achieved in 73.3% of the patients. The ointment was very efficacious in the treatment of Tinea pedis, Pityriasis versicolor and Candida intetrigo where the cure rate was 100% in each condition. It is recommended that Acalypha ointment can be used for the treatment of these superficial mycoses.