Skoči na glavni sadržaj

Food Technology and Biotechnology, Vol. 40 No. 4, 2002.

Izvorni znanstveni članak

Stillage as a Source of Growth Promoting Biofactors and a Stimulator of Levan and Extracellular Levansucrase Synthesis for Zymomonas mobilis

Martins Bekers ; Institute of Microbiology and Biotechnology, University of Latvia, Kronvalda blvd. 4, LV-1586 Riga, Latvia
Mara Grube ; Institute of Microbiology and Biotechnology, University of Latvia, Kronvalda blvd. 4, LV-1586 Riga, Latvia
Livija Vulfa ; Faculty of Biology, University of Latvia, Kronvalda blvd. 4, LV-1586 Riga, Latvia
Dagnija Upite ; Institute of Microbiology and Biotechnology, University of Latvia, Kronvalda blvd. 4, LV-1586 Riga, Latvia
Elena Kaminska ; Institute of Microbiology and Biotechnology, University of Latvia, Kronvalda blvd. 4, LV-1586 Riga, Latvia
Rita Scherbaka ; Institute of Microbiology and Biotechnology, University of Latvia, Kronvalda blvd. 4, LV-1586 Riga, Latvia
Armands Vigants ; Institute of Microbiology and Biotechnology, University of Latvia, Kronvalda blvd. 4, LV-1586 Riga, Latvia
Aleksejs Danilevich ; Institute of Microbiology and Biotechnology, University of Latvia, Kronvalda blvd. 4, LV-1586 Riga, Latvia

Puni tekst: engleski pdf 108 Kb

str. 305-310

preuzimanja: 306

citiraj

Sažetak

In the present work, the fermentation of simultaneous production of ethanol and levan by Zymomonas mobilis grown on different growth media has been studied. Yeast extract, rye stillage or sugar beet molasses stillage were used as additives to the basic sucrose media and the chemical composition, including vitamins, of the cultivation liquids have been determined. It has been shown that 0.5 % of yeast extract dry weight additive could be substituted by 10.0 % of native stillage additive. It was established that molasses stillage stimulates the ethanol synthesis, but rye stillage additive is more preferable for levan production. The extracellular levansucrase obtained from the culture liquid resulted in similar fructooligosaccharide-producing activities using all the above-mentioned media additives.

Ključne riječi

Zymomonas mobilis; stillage media; vitamins; ethanol; levan; levansucrase

Hrčak ID:

178554

URI

https://hrcak.srce.hr/178554

Datum izdavanja:

12.12.2002.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.047 *