ISO 8292-1-2008 动物和植物的脂肪和油.用脉冲NMR测定固体脂肪含量.第1部分:直接法

标准号：ISO 8292-1-2008
中文标准名称：动物和植物的脂肪和油.用脉冲NMR测定固体脂肪含量.第1部分:直接法
英文标准名称：Animal and vegetable fats and oils - Determination of solid fat content by pulsed NMR - Part 1: Direct method
标准类型：X14
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：X14
国际标准分类号：67.200.10
引用标准：ISO 661;ISO 8292-2
适用范围：This part of ISO 8292 specifies a direct method for the determination of solid fat content in animal andvegetable 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 pronouncedpolymorphism and which stabilize mainly in the β′-polymorph; and one for fats similar to cocoa butter whichexhibit pronounced polymorphism and stabilize in the β-polymorph. Additional thermal pre-treatments, whichmay be more suitable for specific purposes, are given in an informative annex.The direct method is easy to carry out and is reproducible, but is not as accurate as the indirect method due tothe approximate method of calculation.NOTE An indirect method is specified in ISO 8292-2.