Method for recovering peptides/amino acids and oil/fat from one or more protein-containing raw materials, products produced by the method, and use of the products

摘要

Disclosed is a method for recovering peptides or amino acids and oil or fat from one or more protein-containing raw materials, the method comprising the following steps: a) grinding the raw materials; b) heating the ground raw materials to a temperature in the range of 40-62 deg C; c) optionally before and/or after the heating step, separating oil/fat from the raw materials in order to obtain a first oil product; d) adding water, the water having approximately the same or the same temperature as the raw materials, and wherein the pH of the water is adjusted by adding calcium; e) hydrolysing the raw materials with endogenous enzymes in order to prepare a hydrolysate: f) optionally during the hydrolysation step, adding a pH adjuster in order to maintain the desired pH value of the hydrolysate; g) heating the hydrolysate to 75-100 deg C; h) removing large particles from the hydrolysate, including non-hydrolysed proteins, which can be returned to the hydrolysis; i) optionally separating off fat/oil in order to obtain a second oil product; j) coagulating the proteins; k) removing the coagulated proteins; l) optionally separating off fat/oil in order to obtain a third oil product; m) optionally concentrating the remaining amino acids and short peptides; and n) optionally drying the concentrate in order to obtain dry short peptides and amino acids.