ISO 8292-2:2008
动物和植物的脂肪和油.用脉冲的NMR测定固体脂肪含量.第2部分:间接法

Animal and vegetable fats and oils - Determination of solid fat content by pulsed NMR - Part 2: Indirect method

标准号

ISO 8292-2:2008

发布

2008年

发布单位

国际标准化组织

当前最新

ISO 8292-2:2008

 

 

引用标准

ISO 3960 ISO 661 ISO 8292-1

适用范围

This part of ISO 8292 specifies an indirect method for the determination of the solid fat content in animal and vegetable fats and oils (hereafter designated “fats”) using low-resolution pulsed nuclear magnetic resonance (NMR) spectrometry. Two alternative thermal pre-treatments are specified: one for general purpose fats not exhibiting pronounced polymorphism and which stabilize mainly in the β′-polymorph; and one for fats similar to cocoa butter which exhibit pronounced polymorphism and stabilize in the β-polymorph. Additional thermal pre-treatments, which may be more suitable for specific purposes, are given in an informative annex. The indirect method is less easy to carry out and less reproducible than the direct method, but is more accurate and more universally applicable to all fats. NOTE A direct method is specified in ISO 8292-1.

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