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Reactors for continuous primary beer fermentation using immobilised yeast |
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| Authors: | Smogrovicova&#; Daniela Do&#;m&#;ny Zolta&#;n Gemeiner Peter Malovi&#;kova&#; Anna Sturdi&#;k Ernest |
| Institution: | (1) Department of Biochemical Technology, Faculty of Chemical Technology, Slovak Technical University, Radlinskeho 9, SK-812 37 Bratislava, Slovakia;(2) Institute of Chemistry, Slovak Academy of Sciences, Dubravska´ cesta 9, SK-842 38 Bratislava, Slovakia |
| Abstract: | A continuous multistage column bioreactor with fluidised beds and continuous gas-lift bioreactor system with immobilised yeast Saccharomyces cerevisiae was developed for the first step of wort fermentation. The system of gas-lift reactor with yeast entrapped in calcium pectate beads was stable for 5 weeks by the optimal residence time of 12.75h and produced beer with a composition and flavour profile similar to that of beer produced by batch fermentation. Concentration of diacetyl was less than 0.1mg/l. |
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