In the present work we have investigated the application of several porous matrices (alginate, polyvinyl alcohol (PVA), and combination of alginate/PVA) as carriers for brewing yeast cell immobilisation and techniques that enable special carrier forms (microbeads and lenses), and studied primary beer fermentation in a gas-lift bioreactor. All carriers provided good mass transfer properties as determined from uniform cell distribution throughout the matrices. Carriers based on PVA have shown excellent mechanical properties. Short- as well as longterm fermentation studies demonstrated high fermentation activity of immobilised cells for all investigated cell carriers. The quality of the obtained beers was comparable to the quality of beer produced by suspended cells.
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