US 12,465,070 B2
Method for producing caviar or a caviar-like product from live mature eggs of fish or crustaceans
Angela Koehler-Guenther, Taarstedt (DE)
Assigned to ALFRED-WEGENER-INSTITUT HELMHOLTZ-ZENTRUM FUER POLAR— UND MEERESFORSCHUNG, Bremerhaven (DE)
Filed by Alfred-Wegener-Institut Helmholtz-Zentrum fuer Polar— und Meeresforschung, Bremerhaven (DE)
Filed on Dec. 16, 2019, as Appl. No. 16/714,886.
Claims priority of provisional application 62/780,356, filed on Dec. 17, 2018.
Prior Publication US 2020/0187532 A1, Jun. 18, 2020
Int. Cl. A23L 17/30 (2016.01)
CPC A23L 17/30 (2016.08) [A23V 2002/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for producing caviar or a caviar substitute product from live, mature, ovulated eggs of bony fish or crustaceans, wherein the live, mature, ovulated eggs comprise an egg envelope having three or more layers, are in a fertile but unfertilized state, comprise egg plasma, and have a natural potassium content in the egg plasma, the method comprising: treating the live, mature, ovulated eggs in a saline solution which does not damage the live, mature, and ovulated eggs and subsequently treating the live, mature, and ovulated eggs in a solution of water and potassium in a concentration which does not damage the live, mature, and ovulated eggs and does not change the eggs' natural potassium content,
wherein an elastic stabilizing layer is formed in the egg envelope between a zona radiata interna layer and an alveolar layer after treatment in the solution of water and potassium,
wherein the water is deionized prior to addition of a potassium donor for forming a cationic component in the solution of water and potassium, wherein the solution of water and potassium has a temperature that does not damage the live, mature, and ovulated eggs, wherein the concentration of potassium cations in the cationic component of the solution of water and potassium is between 0.1 mmol/l and 3.0 mmol/l,
wherein the live, mature, and ovulated eggs are treated in the solution of water and potassium for a duration of a potassium exposure time until an egg envelope of the live, mature, and ovulated eggs obtains a desired elastic stabilization.