Identification des inhibiteurs de la germination de l'orge et mise au point d'un procédé de traitement des eaux de trempe en malterie en vue leur recyclage

Abstract : This work is focused on the reuse of malting process wastewaters, especially steep-out waters. The negative impact of these waters on malt quality was demonstrated: their reuse results in a water uptake delay and a germination delay. Then, the characterisation of these steep-out waters allowed to identify germination inhibitors : they are intermediates of oxidation and polymerisation reactions of phenolic compounds. Finally, a membrane bioreactor treatment process of steep-out waters was developed. Studied at laboratory and pilot scales - with and without coupling to reverse osmosis or activated carbon step - this process was efficient for water treatment and for the removal of inhibitors. The reuse of these treated waters at the steeping step didn't have any negative impact on the process performances, and malts obtained allowed to prepare beers of comparable qualities
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Wafa Guiga. Identification des inhibiteurs de la germination de l'orge et mise au point d'un procédé de traitement des eaux de trempe en malterie en vue leur recyclage. Autre. Institut National Polytechnique de Lorraine, 2006. Français. ⟨NNT : 2006INPL077N⟩. ⟨tel-01752879⟩

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