ICS 67.200.10                         FAD 13

New Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 3/Sec 10) which is identical with ISO 18363-2 : 2018 'Animal and vegetable fats and oils - Determination of fatty-acid-bound chloropropanediols (MCPDs) and glycidol by GC/MS - Part 2: Method using slow alkaline transesterification and measurement for 2-MCPD, 3-MCPD and glycidol' issued by the International Organization for Standardization was adopted by the Bureau of Indian Standards on recommendation of the Oils and Oilseeds Sectional Committee, and approval of the Food and Agriculture Division Council.

IS 548 was first published in 1954 covering the methods of sampling, physical, chemical and qualitative tests for oils and fats. Subsequently, the standard was revised in 1964 and split into 3 parts namely:

Part 1 Methods of sampling, physical and chemical tests;

Part 2 Methods for purity tests; and

Part 3 Methods of analysis of vegetable oils and fats by gas liquid chromatography (GLC) technique (first published in 1976).

To update the method for fatty acid profile given in IS 548 (Part 3) and to include advanced analytical methods for the additional quality parameters, IS 548 Part 3 has been renamed as 'Advanced instrumental methods' and split into separate sections:

Section 1 Determination of fatty acid profile

Section 2 Determination of oxidative stability (accelerated oxidation test)

Section 3 Determination of the triacylglycerol composition of fats and oils - Determination by capillary gas chromatography

Section 4 Determination of content of polar compounds

Section 5 Determination of wax content by gas chromatography

Section 6 Determination of phosphorus content-Colorimetric method

Section 7 Determination of phosphorus content-Method using graphite furnace atomic absorption spectrometry

Section 8 Determination of phosphorus content-Method using inductively coupled plasma (ICP) optical emission spectroscopy

Section 9 Determination of fatty-acid-bound chloropropanediols (MCPDs) and glycidol by GC/MS-Method using fast alkaline transesterification and measurement for 3-MCPD and differential measurement for glycidol

Section 10 Determination of fatty-acid-bound chloropropanediols (MCPDs) and glycidol by GC/MS-Method using slow alkaline transesterification and measurement for 2-MCPD, 3-MCPD and glycidol

Section 11 Determination of fatty-acid-bound chloropropanediols (MCPDs) and glycidol by GC/MS-Method using acid transesterification and measurement for 2-MCPD, 3-MCPD and glycidol