ISO 26323: First Edition
SDO: ISO: International Organization for Standardization
DOD Adopted ANSI Approved Approved
This International Standard specifies a method for the measurement of the acidification activity of lactic acid bacteria by continuous measurement of pH.
NOTE The method is based on Reference .
The method is applicable to dairy starter cultures where these characteristic microorganisms are present.
Two types of standardized milk are specified in the procedure: boiled milk with 9,5 % mass fraction dry matter (B-milk 9,5); and autoclaved milk with 9,5 % mass fraction dry matter (A-milk 9,5). It is possible that heat treatment of B-milk 9,5 does not inactivate all enzymes that are present, which can affect the activity of some cultures. In that case, cultures are tested with A-milk 9,5 in which all enzymes have been inactivated.
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