A cell-factory model of Saccharomyces cerevisiae based on bacterial cellulose without GMO for consolidated bioprocessing of starch

•Provide a cell factory of Saccharomyces cerevisiae without genetic modification.•3-combined bioprocesses in one batch (CBP) for starch fermentation are performed.•82% of the theoretical yield of starch alcoholic fermentation in one batch is obtained.•Promising results for the elimination of the malting process in brewing.•Cell factory as model for other microorganisms applications in White Biotechnology.