Method for producing peptide mixture, method for producing fermented milk containing antihypertensive peptide and method for producing antihypertensive peptide preparation

摘要

Provided is a method for producing a peptide mixture containing IPP and / or VPP at a high concentration, fermented milk containing an antihypertensive peptide, and a preparation thereof with high efficiency. The method for producing a fermented milk containing a peptide mixture or an antihypertensive peptide of the present invention comprises a step of preparing a mixed raw material (a) comprising a protein containing an amino acid sequence of an antihypertensive peptide, a lactic acid bacteria assimilating sugar, and a lactic acid bacterium (1 -A), including stirring the mixed raw material (a), adjusting the pH with an alkaline agent and performing lactic acid fermentation to produce an antihypertensive peptide, etc. (1-B), and for the protein in the mixed raw material (a) The ratio of lactic acid bacteria assimilating sugar is 1.53 times or more by weight, and the pH adjustment in step (1-B) is controlled to 4.8 to 5.8.