Patent ID: 8728773

Claim:
A process for the production of at least one organic compound having at least 3 C atoms or having at least 2 C atoms and at least one N atom, where the organic compound is selected among mono-, di- and tricarboxylic acids which optionally have hydroxyl groups attached to them and which have 3 to 10 carbon atoms, proteinogenic and nonproteinogenic amino acids, purine bases, pyrimidine bases; nucleosides, nucleotides, lipids; saturated and unsaturated fatty acids; diols having 4 to 10 carbon atoms, polyhydric alcohols having 3 or more hydroxyl groups, long-chain alcohols having at least 4 carbon atoms, carbohydrates, aromatic compounds, vitamins, provitamins, cofactors, nutraceuticals, proteins, carotenoids, ketones having 3 to 10 carbon atoms, lactones, polyhydroxyacetate, polyester, polylactide, polysaccharides, polyisoprenoids, polyamides and cyclodextrins, by means of fermentation, comprising the following steps: a1) milling a cereal kernels as a starch feedstock, thus obtaining a millbase which comprises at least 20% by weight of the nonstarchy solid constituents of the starch feedstock; a2) suspending the millbase in an aqueous liquid and liquefying the millbase present in the aqueous liquid in the presence of at least one starch-liquefying enzyme, obtaining an aqueous dextrin-containing medium (1) which comprises at least 20% by weight of all a part of the nonstarchy solid constituents of the starch feedstock; and b) using the aqueous dextrin-containing medium (1) in a fermentation liquor for culturing a microorganism which is capable of overproducing the organic compound and which is capable of metabolizing dextrins present in the aqueous dextrin-containing medium (1) without externally adding enzymes which hydrolyze the dextrins to monosaccharides; and c) optionally, enzymes which hydrolyze dextrins to monosaccharides can be added externally in an amount of less than 0.001% by weight based on the total weight of the starch feedstock employed.