Processed foods varieties like potatoes are very popular in developing era. There are plenty of industries engaged in this kind of work. The main problem in these industries is disposal of the waste materials produced during processing of potatoes, it creates environmental pollution. So, use of this waste materials mainly potato peel as a raw material for enzyme production will be possible with the help of starch hydrolyzing bacterial strain, B.subtilis. Sufficient amount of potato peel is necessary for the optimum growth of bacteria. So, the correct peel: agar ratio is also very much...