Jackline A. Ogolla

Department of Food Science, Nutrition and Technology, University of Nairobi, Nairobi (Kangemi), Kenya

George O. Abong

Department of Food Science, Nutrition and Technology, University of Nairobi, Nairobi (Kangemi), Kenya

Michael W. Okoth

Department of Food Science, Nutrition and Technology, University of Nairobi, Nairobi (Kangemi), Kenya

Jackson N. Kabira

National Potato Research Centre (KARI), Tigoni, Limuru. Nairobi, Kenya.

Jasper K. Imungi

Department of Food Science, Nutrition and Technology, University of Nairobi, Nairobi (Kangemi), Kenya

Paul N. Karanja

Department of Food Science Technology, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya