The causative agent of botulism, a deadly form of food poisoning, is an endospore-forming bacterium called Clostridium botulinim. Why might it be difficult to kill this bacterium in contaminated food?

Answer: It is difficult to kill clostridium botulinum in food because the organism grow under low oxygen condition and produce spores and toxin. The bacterium can survive under harsh condition and produce spores that are resistant to heat, drying and chemicals. These spores germinate into bacteria in food when conditions is favourable.

Explanation:

Botulisim is a serious and fatal illness caused by the neurotoxin secreted by clostridium botulinum. This toxin block nerve function and can lead to respiratory and muscular paralysis. The toxin is found in improper processed can food.