Delmonte Pierluigi, Kia Ali-Reza Fardin, Hu Qing, Rader Jeanne I
U.S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, Office of Regulatory Science, 5100 Paint Branch Pkwy, College Park, MD 20740, USA.
J AOAC Int. 2009 Sep-Oct;92(5):1310-26.
In recent years, several countries have implemented new regulations regarding the limitation or labeling of the trans fatty acid (TFA) content of foods and dietary supplements. GC methods for fatty acid (FA) analysis have been updated by improving the separation of TFAs from other FAs, especially trans- and cis-18:1, and by focusing more attention on the FAs contained in fats and oils in lower amounts. FA analysis is affected by the limited availability of reference materials. Identifications are frequently made simply by comparison with separations reported in the literature. This report describes the preparation of mixtures containing fatty acid methyl esters (FAMEs) that are not available as reference materials. These mixtures can be used for FAME identifications. The prepared mixtures are analyzed under the experimental conditions of the American Oil Chemists' Society (AOCS) Official Method Ce 1h-05 and AOCS Recommended Practice Ce 1j-07.
近年来，几个国家已就食品和膳食补充剂中反式脂肪酸（TFA）含量的限制或标签实施了新规定。脂肪酸（FA）分析的气相色谱（GC）方法已得到更新，通过改进反式脂肪酸与其他脂肪酸（尤其是反式和顺式18:1）的分离，并更加关注油脂中含量较低的脂肪酸。脂肪酸分析受到参考物质供应有限的影响。鉴定通常只是简单地与文献报道的分离结果进行比较。本报告描述了含有不可作为参考物质的脂肪酸甲酯（FAME）混合物的制备方法。这些混合物可用于脂肪酸甲酯的鉴定。所制备的混合物在美国油脂化学家协会（AOCS）官方方法Ce 1h - 05和AOCS推荐操作规程Ce 1j - 07的实验条件下进行分析。
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