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Ethanol production from fructose in continuous culture by free and flocculent cells ofZymomonas mobilis

✍ Scribed by I. Toran-Diaz; V. K. Jain; J. C. Baratti

Publisher: Springer Netherlands
Year: 1984
Tongue: English
Weight: 414 KB
Volume: 6
Category: Article
ISSN: 0141-5492
DOI: 10.1007/bf00138011

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✦ Synopsis

SuMMARk'

Zymomonas mobilis st,rei.n ZM4 was used for ethanol production from fructose (100 g/l) in continuous culture with a mineral (cant eining Ca pantothenate) or a rich (containing yeast extract) mediium. With both media high conversion yields we,re observed but the ethanol productivity was limited by the low biomass content of the fe-lilentor.

A new flocculent strain of Zmobilis (ZM4F) was cultivated in a CSTR with an internal settler and showed a maximal productivity of 93 g/l.h (fructose conversion of 8Cr%). When the fructose conversion was 96% en ethanol productivity of 85.6 g/l.h with an ethanol yield of 0.49 g/g (96% of theoretical) was observed.

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