In terms of nutrition, dates are an important commodity because they are a source of carbohydrates and minerals. Saudi Arabia is the second largest producer of dates worldwide. Khalas is the tenth most popular date type in the Kingdom of Saudi Arabia (KSA), but only limited information related to the levels of essential nutrients in Khalas dates is available. The concentrations of Mn, Cu, Zn, and Se were determined using inductively coupled plasma-mass spectrometry (ICP-MS). The average concentrations in wet weight were as follows (mg/kg): Mn (2.90 ± 0.54), Cu (1.78 ± 0.64), Zn (1.72 ± 0.42), and Se (0.10 ± 0.06). The calculated intakes (μg/kg bw day) per 100 g dates for each element were as follows: Mn (4.14), Cu (2.54), Zn (2.46), and Se (0.14), which represent 0.14%, 0.51%, 0.25%, and 0.2%, respectively, of the provisional maximum tolerable daily intake (PMTDI) recommended by the EFSA/WHO. It was found that levels of the analysed essential elements in up to 100 g of Khalas dates do not exceed the level set by the EFSA/WHO.

中文翻译：

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电感耦合等离子体质谱法测定从棕榈中提取的Khalas枣中某些必需元素的评价。

就营养而言，枣是重要的商品，因为它们是碳水化合物和矿物质的来源。沙特阿拉伯是全球第二大枣生产国。Khalas是沙特阿拉伯王国（KSA）中第十大最受欢迎的枣类，但仅提供与Khalas枣中必需营养素含量有关的有限信息。使用电感耦合等离子体质谱法（ICP-MS）测定Mn，Cu，Zn和Se的浓度。湿重的平均浓度如下（mg / kg）：Mn（2.90±0.54），Cu（1.78±0.64），Zn（1.72±0.42）和Se（0.10±0.06）。计算的摄入量（μ每100 g日期的每种元素的g / kg bw日）如下：Mn（4.14），Cu（2.54），Zn（2.46）和Se（0.14），分别代表0.14％，0.51％，0.25％和分别为EFSA / WHO建议的临时最大每日耐受摄入量（PMTDI）的0.2％。发现在最多100克的Khalas枣中分析的必需元素含量未超过EFSA / WHO设定的含量。