There is a high demand for enzymatic proteins in modern food production. They are used to increase the efficiency and profitability of traditional production, as well as to obtain new products with interesting functional and sensory properties. Enzymes are present in the natural environment, where they are synthesized by various organisms. They are necessary catalysts of all biochemical reactions. They are characterized by high specificity and substrate selectivity, which guarantees high product quality. The enzymes that hydrolysing cheap starch and cellulosic raw materials, pectins and β-glucans are particullary needed in some of food industry branches, e.g. brewing, baking, or fruit and vegetable industry. Biotechnological production, which guarantees fast, cheap and very efficient biosynthesis of enzymes, can meet the increased demand for enzymatic products.