標準號：ISO 8292-1-2008
中文標準名稱：動物和植物的脂肪和油.用脈沖NMR測定固體脂肪含量.第1部分:直接法
英文標準名稱：Animal and vegetable fats and oils - Determination of solid fat content by pulsed NMR - Part 1: Direct 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 8292-2
適用范圍：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.