Process for preparing a biomass, use of the biomass so prepared, and panification ferment

A process for preparing a biomass on a culture medium, the biomass being directly useable as a panification ferment without separating the biomass from the culture medium and without the addition of industrial yeast, said process comprising;

• obtaining the culture medium;
• inoculating the culture medium with at least one strain of yeast and at least one strain of lactic acid bacteria;
• providing an air supply;
• cultivating the strain of yeast and the strain of lactic acid bacteria on the culture medium in the presence of the air supply;
• and
• recovering the medium containing the biomass;
• wherein the culture medium comprises a cereal medium free of any chemical additives obtained by;
• preparing a dilute aqueous mixture comprising at least whole-flour or wheat germ, the mixture comprising starch and gluten;
• adding at least one alpha-amylase and at least one amyloglucosidase to hydrolyze all of the starch in the mixture into fermentable sugar;
• and
• adding at least one proteolytic enzyme of food quality to gently hydrolyze at least part of the gluten in the mixture, thereby obtaining the culture medium.