Purity Kaaria

Department of Botany, Jomo Kenyatta University of Agriculture and Technology, P.O.Box 62000-00200 Nairobi, Kenya

Joseph Wakibia

Department of Botany, Jomo Kenyatta University of Agriculture and Technology, P.O.Box 62000-00200 Nairobi, Kenya

Viviene Matiru

Department of Botany, Jomo Kenyatta University of Agriculture and Technology, P.O.Box 62000-00200 Nairobi, Kenya

Mary Ndung’u

Department of Chemistry, Jomo Kenyatta University of Agriculture and Technology, P.O.Box 62000-00200 Nairobi, Kenya

Christine Bii

Kenya Medical Research Institute-Centre for Microbiology, 54840-00200 Nairobi, Kenya