The aim of the present study was to determine macro- and micro-elements of fruits commonly available on the Czech market and estimate their daily reference intake. The locally produced Czech fruits (grape wine, apples, pears, plums and peaches) and exotic fruits (physalis, kiwifruit, fig and avocado) were analysed. The determination of mineral elements was carried out with the validated Atomic Absorption Spectrometry method. Statistically significant influence (p < 0.001) of fruit’s geographical origin on the content of almost all analysed macro- and micro-elements (Mg, Ca, Mn, Zn, K and Cu) and Na in fruits (p < 0.05), except Fe was confirmed. In many cases, locally produced Czech fruits contained lower levels of macro- and micro-elements in comparison to exotic fruits. Potassium and iron were the most abundant macro- and micro-elements found in the analysed fruit samples. The highest average percentages of daily reference intake (DRI) and adequate intake (AI) for an adult were obtained for exotic fruit samples: physalis, avocado and fig. Factorial analysis allowed the discrimination between the locally produced Czech fruit samples and the exotic fruit samples and can be used for the differentiation with respect to their origin.

中文翻译：

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捷克市场上本地生产和进口的水果中的宏观和微量元素：定量评估

本研究的目的是确定捷克市场上常见的水果的宏观和微量元素，并估计其每日参考摄入量。分析了当地生产的捷克水果（葡萄酒，苹果，梨，李子和桃子）和外来水果（酸浆，猕猴桃，无花果和鳄梨）。矿物元素的测定是使用经过验证的原子吸收光谱法进行的。 水果地理起源对水果中几乎所有分析的宏观和微量元素（Mg，Ca，Mn，Zn，K和Cu）和Na的含量具有统计学意义（p <0.001）（p <0.05），但确认到铁。在许多情况下，与外来水果相比，当地生产的捷克水果含有的微量元素和微量元素含量较低。钾和铁是在分析的水果样品中发现的最丰富的宏观和微量元素。成人的每日参考摄入量（DRI）和充足摄入量（AI）的最高平均百分比来自异国水果样品：酸浆，鳄梨和无花果。析因分析可以区分本地生产的捷克水果样品和外来水果样品，并可用于区分其来源。