Abstract Sesame seeds collected in eight provinces of Yemen were used to prepare cold-pressed sesame oil over three consecutive years. After ascertaining the nutritional quality and compliance with official norm of each batch of oil, mineral composition was determined by ICP-OES. No major and significant variations were detected over three years indicating the high reproducibility of Yemeni sesame oil composition as a function of its geographic origin. Three physico-chemically distinct sub-groups were identified. A subgroup includes sesame oil from Al Bayda, Marib, Ibb, and Taiz; a second is constituted by sesame oil from Abyan, Shabwa, and Hadhramount while sesame oil from Hodeida presents its own specificity. Calcium content was between 3.02 and 9.66 mg/kg, this cation making up 50% of the total mineral content. The two other most abundant minerals were potassium (0.824–4.251 mg/kg) and magnesium (0.811–4.742 mg/kg). Potentially toxic metal (Cd, Pb, Cu, Sn and Zn) content was very low in all samples. Principal component analysis showed that Abyan oil presents a unique metal-content profile. The precise geographic origin of Yemeni sesame oil can be determined by element content analysis.

中文翻译：

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来自也门不同环境的植物芝麻油的化学成分和矿物学特征

摘要 采自也门8个省的芝麻，连续三年制备冷榨芝麻油。在确定每批油的营养质量和符合官方标准后，通过 ICP-OES 确定矿物成分。三年内未检测到重大和显着变化，表明也门芝麻油成分的高度可重复性作为其地理来源的函数。确定了三个物理化学上不同的亚组。一个亚组包括来自 Al Bayda、Marib、Ibb 和 Taiz 的芝麻油；第二种是由来自 Abyan、Shabwa 和 Hadhramount 的芝麻油构成，而来自 Hodeida 的芝麻油则具有自己的特点。钙含量介于 3.02 和 9.66 毫克/公斤之间，该阳离子占总矿物质含量的 50%。另外两种最丰富的矿物质是钾（0.824-4.251 mg/kg）和镁（0.811-4.742 mg/kg）。所有样品中的潜在有毒金属（Cd、Pb、Cu、Sn 和 Zn）含量都非常低。主成分分析表明，Abyan 油具有独特的金属含量特征。也门芝麻油的精确地理来源可以通过元素含量分析来确定。