| 摘要 |
The apparatus comprises a receptacle 10, for nutrient medium 18, having a lid 12 with a gas-permeable foam insert 16 and a floating raft 20 carrying a fermentation vessel 28 for a microorganism which is in contact with the growth medium via a membrane (32) of the vessel. The supporting raft and vessel can be removed so that the medium can be replaced by a second medium which provides conditions for biosynthesis of a potentially useful biochemical, such as a secondary metabolite, by the microorganism. In a further embodiment, the apparatus comprises a cylindrical receptacle and a cylindrical fermentation vessel having a tapered end which has membranes formed thereacross (Figs.12,13). Alternatively, the vessel is formed with an outer membrane extending down its length (Figs.15,16).
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