Application of partial autoproteolysis to extraction of protein from Antarctic krill ( Euphausia superba). Part 3. Changes in and yield of nitrogen substances during autoproteolysis of fresh and frozen krill

• Published in: Food / Nahrung
• Main Authors: Kolakowski, E., Lachowicz, K.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1982
• Subjects: Antarctic; Antarc*; Antarctic Krill; Euphausia superba
• Online Access: http://dx.doi.org/10.1002/food.19820261026; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Ffood.19820261026; https://onlinelibrary.wiley.com/doi/pdf/10.1002/food.19820261026

Abstract Respective utilities of the fresh and frozen (after a 10‐month storage at −21 °C) krill for precipitate production by means of partial autoproteolysis within 10–60 °C were compared. The highest yield of the precipitate was found at about 20 °C, regardless of the raw material used, although the optimal temperature ranges for the fresh and frozen krill were 20–30 °C and 10–20 °C, respectively. The main factors assisting the protein extraction during partial autoproteolysis were enzymatic protein hydrolysis in the fresh krill and the loosening of tissues brought about by water crystallization in the frozen krill.