The reaction Between Gelatine and Trypsin.

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Biology Coursework The reaction Between Gelatine and Trypsin

Aim

I am going to investigate how photographic film can be recycled to be reused again.

The photographic film has a silver compound on it which needs to be separated from

the plastic. If the silver compound was to come off then the plastic would go clear. If

we were to use an industrial process it would be too expensive, so our task is to make

it cost efficient. Exposed photographic film contains black grains of silver compound.

The particles of silver are attached to the film by an insoluble compound called

gelatine. To achieve this goal I have been asked to find the optimum temperature at

which this process is most efficient. I will use an enzyme called Trypsin to dissolve

the gelatine in the photographic film. However gelatine is in soluble in water if the

water is not at a high temperature. When the enzyme digests the gelatine it forms

soluble amino acids. These acids dissolve and take the silver compounds with them.

At the end