Outline the process of producing penicillin

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The biodigester

A biodigester is a large vessel made from stainless steel used to produce large quantities of a certain chemical, usually the product of a particular microbe.
Eg, penicillin

The process of producing penicillin:
Culture placed in fermenter: to allow fungus to reproduce
Collect batch and filter: to remove solid material
Collect filtered liquid: it contains penicillin
Penicillin crystallised: penicillin concentrated
Put into capsules: medicine ready for use.

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Parts of a biodigester

- stirrer: mixes microbes, nutrients and oxygen

- cold water jacket

- control centre: for monitoring conditions and sensor

- product collected through oulet then purified

- paddle wheel

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