標準號：ISO 8292-2-2008
中文標準名稱：動物和植物的脂肪和油.用脈沖的NMR測定固體脂肪含量.第2部分:間接法
英文標準名稱：Animal and vegetable fats and oils - Determination of solid fat content by pulsed NMR - Part 2: Indirect method
標準類型：X14
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：X14
國際標準分類號：67.200.10
引用標準：ISO 661;ISO 3960;ISO 8292-1
適用范圍：This part of ISO 8292 specifies an indirect method for the determination of the 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 indirect method is less easy to carry out and less reproducible than the direct method, but is moreaccurate and more universally applicable to all fats.NOTE A direct method is specified in ISO 8292-1.