ISO 11816-2:2003|IDF 155-2:2003
Determination of alkaline phosphatase activity in milk and milk products Part 2: Fluorimetric method in cheese

Standard No.

ISO 11816-2:2003|IDF 155-2:2003

Release Date

2003

Published By

International Organization for Standardization (ISO)

Status

Be replaced

Replace By

ISO 11816-2:2016

Latest

ISO 11816-2:2024

Scope

Part2:FluorometricmethodforcheeseThisstandardspecifiesafluorometricmethodforthedeterminationofalkalinephosphataseactivityincheese.Thismethodisalsoapplicabletosoftcheesesandsemi-hardcheesesfordistinguishingrawmilkcheesesfromcheeseproducedwithpasteurizedmilk,providedthatthemouldisonlyonthesurfaceandnotalsointheinnerpart(e.g.blue-veinedcheeses).Thismethodcanalsobeusedtochecktheproperpasteurizationofcheeseoritsrawmaterial.Inlargehardcheeseswherethewheycurdmixtureisscaldedattemperaturesabove50degreesCelsius,hightemperaturesremainforarelativelylongtime.Thisisespeciallythecaseinthecentreofthesecheeses,thuspromotingphosphataseinactivation.Todistinguish,therefore,betweenhardcheesesfromrawmilkandhardcheesesfrompasteurizedmilkisdifficultandoftenevenimpossiblebythismethod.

ISO 11816-2:2003|IDF 155-2:2003 history

• 2024 ISO 11816-2:2024 Milk and milk products — Determination of alkaline phosphatase activity — Part 2: Fluorimetric method for cheese
• 2023 ISO 11816-2:2023 Milk and milk products — Determination of alkaline phosphatase activity — Part 2: Fluorimetric method for cheese
• 2016 ISO 11816-2:2016 Milk and milk products - Determination of alkaline phosphatase activity - Part 2: Fluorimetric method for cheese
• 2003 ISO 11816-2:2003 Milk and milk products - Determination of alkaline phosphatase activity - Part 2: Fluorometric method of cheese