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The vessel itself is made from stainless steel which does not corrode or affect the microbes and fermentation products. It can also be easily cleaned. Microbes and nutrients are put into the fermenter and air is bubbled through so that the microbes can respire aerobically. As carbon dioxide builds up the gas outlet releases it to avoid build up of pressure. A water jacket surrounding the fermenter maintains an optimum temperature so the proteins do not become denatured. Temperature, pH and oxygen probes are linked to a computer which monitors the conditions inside the vessel. Paddle stirrers ensure that the microbes,


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