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Bacillus cereus is a bacterial that tends to grow in starchy food. Since potato is a starchy food, there may be growth of Bacillus cereus on the potatoes. Bacillus cereus is also commonly found in soil, air & water. Thus, if the potatoes are grown on contaminated soil or uses contaminated water, Bacillus cereus may transfer from these sources to the plant itself. Moreover, Bacillus cereus is a spore-forming microorganism. Therefore, there might be possibility that the pathogen survive even after heating process. (European Bioinfomatics Institute, 2010; MicrobiologyBytes, 2007)