Abstract: | With the aid of the method of isoelectric focusing eight thermostable proteins with isoelectric points of 3.6, 3.9, 4.u, 5.1, 5.8, 6.6, 7.2 and 10.0 were found in the extract from potato tubers of the Lyubimets variety. All the proteins had inhibitory activity in relation to alpha-chymotrypsin and trypsin. |