The Influence of the Oenococcus Oeni Malolactic Bacteria in Modelling the Flavor of White Wine

The research investigated the accumulation of malic acid and diacetyl in the white wines during the alcoholic fermentation of must with a Saccharomyces cerevisiae wine yeasts isolated by the author and Oenococcus oeni malolactic bacteria in a concentration of 10⁶ CFU/mL. The two aroma compounds were detected and quantified in the resulting wines, making a comparison between the two technological systems, i.e.: co-inoculation of malolactic bacteria and sequential inoculation. Based on our determinations, it was ascertained that the Oenococcus oeni malolactic bacteria co-inoculation system in fermentative processes leads to a substantial reduction of malolactic bacteria and diacetyl concentrations. Thus, harmonious, balanced white wines are obtained, as specific to the area.