In order to extend and to preserve the positive effects due to a vinification with oxygen lack, AEB prepared Plustabil Redox, a clarifier based on potassium caseinate and PVPP, enabling, thanks to the synergic action of its components, to slow down oxidative effects because of a partial removal of easily oxidizable unstable catechins. Plustabil Redox does not interfere in any way with odorous compounds, thus keeping wine aroma unaltered. It can be used during fermentation, at its end or as last preassembling clarification.