... a black protean gelatine coating and trypsin breaks down proteins so therefore will break down the coating and the film will just become a clear strip of plastic. Trypsin usually works at pH8 or pH9 (alkali conditions) and at human body temperature, which is normally 37-38?C. Considering that those conditions are its normal conditions, I think that they will be its best conditions. Basically I think that, if the temperature is too low then, due to insufficient amounts of energy this will slow down the trypsin's speed of breaking down the gelatine and if the temperature is too high then it will start to kill off the enzyme which will also slow it down, so it needs to be somewhere in between. Preliminary test: I did this experiment previously to test whether the range of temperatures or the equipment needed to be changed. Here are the results of the preliminary ...

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