Ravid, U., Institute of Field Crops, Agricultural Research Organization, Newe Ya'ar Research Center, Haifa, PO 31-999, Israel
Putievsky, E., Institute of Field Crops, Agricultural Research Organization, Newe Ya'ar Research Center, Haifa, PO 31-999, Israel
Katzir, I., Institute of Field Crops, Agricultural Research Organization, Newe Ya'ar Research Center, Haifa, PO 31-999, Israel

(1R)(+)‐Pulegone with high enantiomeric purity (95–100%) was detected in the essential oils from fresh leaves of Mentha piperita L., M. longifolia (L.) Huds., M. pulegium L., M. sylvestris L., Calamintha incána (Sm.) Heldr. and Micromeria fruticosa. L. High enantiomeric purities were found in samples of commercial (+)‐ and (—)‐pulegone. Direct enantiomeric separation was performed using a Cyclodex B chiral capillary column. Copyright © 1994 John Wiley & Sons, Ltd