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Adsorbents for the recovery of aroma compounds in fermentation processes
Authors:Ulrich Krings  Markus Kelch  Ralf G Berger
Abstract:Using a model solution of 12 aroma compounds, representative of microbial volatiles, 31 different adsorptive materials were investigated with regard to their solid phase extraction and desorption properties. Well known styrene—divinylbenzene-based resins and alternative adsorbents including zeolites, β-cyclodextrin and modified activated carbon were compared. Adsorption/desorption rates in aqueous solution were determined for each adsorbent. Isotherms and adsorption kinetics were determined for the most effective adsorbents.
Keywords:adsorbents  aroma compounds  recovery  adsorption isotherms  adsorption kinetics
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