Palm oil is one of the most useful vegetable available. Sudan IV dye is used as hue enhancer in palm oil despite the ban as food colorant due to its carcinogenicity and mutagenicity by the International Agency for Research on Cancer (IARC). Surface enhanced Raman spectroscopy (SERS) coupled with chemometric methods was applied to detect the presence of Sudan IV in some edible palm oil samples. We studied the samples within the 1200–1800 cm− 1 Raman frequency range. In predicting adulteration, we used 1388 cm− 1 Raman peak that is associated with Sudan IV as our marker. We were able to confirm adulteration in four of the five palm oil samples provided by the Food and Drug Authority of Ghana. With these methods, we confirmed the results from Food and Drug Authorities of Ghana by proving that there were indeed Sudan IV adulteration in some palm oil samples.

中文翻译：

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食用棕榈油中苏丹四的定性分析

棕榈油是最有用的蔬菜之一。尽管国际癌症研究机构（IARC）禁止将Sudan IV染料用作食品着色剂，但仍将其用作棕榈油的色相增强剂。表面增强拉曼光谱（SERS）结合化学计量学方法用于检测一些食用棕榈油样品中苏丹IV的存在。我们研究了1200–1800 cm-1拉曼频率范围内的样本。在预测掺假时，我们使用了与苏丹IV相关的1388 cm-1拉曼峰。我们能够确认加纳食品和药物管理局提供的五个棕榈油样品中有四个掺假。通过这些方法，