Question

13. Is canned food sterile? Yes or No. Explain your answer

14. Why are endospores so resistant to drying, heat, chemicals, and radiation

Answer 1

13- Mostly canned food are sterilised and pasteurised but this process might not be 100 % effective at the spores of bacterias which can spoil the canned product. Generally bacteria or bacterial spore can be destroyed by autoclaving , irradiation but these methods can also destroy the food quality.

14- Endospores' cortex contain an inner membrane which surrounds the main part of bacteria which is also known as core which provide resistance to endospore against any adverse condition . This cortex makes a cell highly resistant and make it dormant so that the genetic material get preserved.

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