Effects of charcoal kiln and microwave oven drying techniques on the chemical and thermal characteristics of tomato and yam slices

1 Department of Food Science and Technology Federal University of Agriculture Makurdi, Benue State, Nigeria. 2 Department of Nutrition and Dietetics, College of Food Technology and Human Ecology, Federal University of Agriculture, Makurdi, Benue State, Nigeria. 3 International Centre for Biotechnology (ICB) Under the Auspices of UNESCO, at the University of Nigeria, Nsukka, Enugu State, Nigeria. 4 Department of Food Science and Technology, Faculty of Agriculture, University of Nigeria, Nsukka, Enugu State, Nigeria. 5 Department Food Process Engineering, College of Engineering and Technology, Wolkite University, Ethiopia. 6 Department of Chemical Engineering, Kombolcha Institute of Technology, Wollo University, Wollo, Ethiopia.