Changes in microbial counts (aerobic bacteria, yeast and
mould) of osmotically dehydrated and CaCl2 infused purple sweet potatoes at both temperature (RT & 4˚C) for 25 day are shown in Figs. 7 and 8 Shelf life of of potatoes samples. The acceptable maximum microbial load including aerobic bacteria, and total yeast
and mould in fruit juices are about 4 and 3 log CFU/ml, respectively. The aerobic plate counts (APC) in control (untreated
juice) increased from 2.74 to 8.32 log CFU/ml after 5 weeks storage. While, yeast and mould counts (YMC) increased from 2.42 to 6.10 log CFU/ml after 5 weeks storage. The rate of microbial growth observed in control was higher than UV-C treated juice samples during storage. The shelf life of UV-C treated