Application of partial autoproteolysis to extraction of protein from Antarctic krill (Euphasia superba). Part 2. Influence of temperature on protein extraction intensity

Two temperature maxima were found of protein extration using partial autoproteolysis of krill. The extracts obtained at 45‐55 °C show a high content of non‐protein nitrogen, polypeptides and free amino acids, with a low content of thermally precipitated protein. This extract can be utilized as a useable material for direct drying. Otherwise if an extract is used for production of thermally precipitated protein, much better results are obtained at low temperatures of autolysis (6‐10 °C).