C - Chemistry – Metallurgy – 12 – P
Patent
C - Chemistry, Metallurgy
12
P
195/140, 195/145
C12P 19/06 (2006.01) B01F 5/10 (2006.01) B01J 8/04 (2006.01) C12M 1/04 (2006.01) C12M 1/08 (2006.01) C12M 1/20 (2006.01)
Patent
CA 1313159
ABSTRACT For the fermentative preparation of polysac- charides, in particular xanthane, water, production medium (sugars, nutrient salts), and an inoculation material of a suitable aerobic bacterium are mixed in a reactor as reaction components, the production medium being exposed to fermentation while an oxygen-containing gas is being supplied. The object is to avoid the usual low yield of such a process and to reject an expensive and sensitive alternative construction (circulation tube). According to the invention, the reaction components are introduced into a reactor vessel in a circulating flow by means of Pumping means, which circulating flow comprises a rising flow and a descending flow which are separated from each other by one or more partitions disposed in the reactor vessel. The mixing is brought about because the rising flow and/or the descending flow is passed essentially in the form of a Plug flow through one or more static in-line mixers.
539147
Koerts Kees
Oosterhuis Nicolaas Marius Gerard
Cooperatieve Vereniging Suiker Unie U.a.
Mccarthy Tetrault Llp
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