ISO 18363-1:2015
Animal and vegetable fats and oils — Determination of fatty-acid-bound chloropropanediols (MCPDs) and glycidol by GC/MS — Part 1: Method using fast alkaline transesterification and measurement for 3-MCPD and differential measurement for glycidol
ISO 18363-1:2015 describes a procedure for the indirect determination of 3-MCPD esters (bound 3-MCPD) and possible free 3-MCPD after alkaline catalysed ester cleavage and derivatization with phenylboronic acid (PBA). Furthermore, this part of ISO 18363 enables the indirect determination of glycidyl esters (bound glycidol) under the assumption that no other substances are present that react at room temperature with inorganic chloride to generate 3-MCPD.
ISO 18363-1:2015 is applicable to solid and liquid fats and oils. Milk and milk products (or fat coming from milk and milk products) are excluded from the scope of this part of ISO 18363.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
5.1 General
5.2 Standard and reference compounds
5.3 Solvents
5.4 Other reagents
6 Apparatus
7 Sample
7.1 Sampling
7.2 Preparation of the test sample
8 Procedure
8.1 Spiking with surrogate standard and homogenization
8.2 Ester cleavage and glycidol transformation
8.3 Matrix clean up
8.4 Derivatization
8.5 Gas chromatography/mass spectrometry references
9 Expression of results
10 Precision
10.1 Interlaboratory test
10.2 Repeatability
10.3 Reproducibility
11 Test report
Annex A (informative) Results of an collaborative trial
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
5.1 General
5.2 Standard and reference compounds
5.3 Solvents
5.4 Other reagents
6 Apparatus
7 Sample
7.1 Sampling
7.2 Preparation of the test sample
8 Procedure
8.1 Spiking with surrogate standard and homogenization
8.2 Ester cleavage and glycidol transformation
8.3 Matrix clean up
8.4 Derivatization
8.5 Gas chromatography/mass spectrometry references
9 Expression of results
10 Precision
10.1 Interlaboratory test
10.2 Repeatability
10.3 Reproducibility
11 Test report
Annex A (informative) Results of an collaborative trial
Bibliography