1. Chemistry Department, Kenyatta University, P. O Box: 43844-00100, Nairobi, Kenya
2. Centre for Sustainable Pest and Disease Management, Biological Chemistry Department, Rothamsted Research, Harpenden, Herts, AL5 2JQ, UK
3. Applied Bioprospecting Programme, International Centre for Insect Physiology and Ecology, P.O Box 30772-00100, Nairobi Kenya
4. Biotechnology Research Institute-Kenya Agricultural and Livestock Research Organization, P.O Box 362-00902, Kikuyu, Kenya