M C Almeida Ivone, Oliva-Teles M Teresa, Alves Rita C, Santos Joana, S Pinho Roberta, I Silva Suzene, Delerue-Matos Cristina, Oliveira M Beatriz P P
REQUIMTE/LAQV, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal.
Foods. 2020 Feb 21;9(2):229. doi: 10.3390/foods9020229.
Oilseeds from five native plant species with edible potential from the Brazilian Caatinga semi-arid region ( , , , , and ) were investigated regarding their mineral contents. The minerals, Na, K, Ca, Mg, Fe, Cu, Cr, Al, were analyzed by high-resolution continuum source atomic absorption spectrometry (HR-CS AAS) and P by the vanadomolybdophosphoric acid colorimetric method. K, Mg, and P were the main elements found (1.62-3.7 mg/g, 362-586 µg/g, and 224-499 µg/g dry weight (dw), respectively). seeds contained the highest amounts of K and P, while seeds were the richest in Mg. Fe was the most abundant oligoelement (2.3-25.6 µg/g dw). Cr contents were below the limit of quantification for all samples and Al amounts were low: 0.04-1.80 µg/g dw. A linear discriminant analysis clearly differentiated and samples from the remaining ones. In sum, these oilseeds from the Brazilian Caatinga semi-arid region seem to have the potential to be used as natural sources of minerals, mainly K.
对巴西半干旱卡廷加地区5种具有食用潜力的本土植物种子（ 、 、 、 、 ）的矿物质含量进行了研究。通过高分辨率连续光源原子吸收光谱法（HR-CS AAS）分析了钠、钾、钙、镁、铁、铜、铬、铝等矿物质，通过钒钼磷酸比色法分析了磷。钾、镁和磷是主要发现的元素（干重分别为1.62 - 3.7毫克/克、362 - 586微克/克和224 - 499微克/克）。 种子的钾和磷含量最高，而 种子的镁含量最丰富。铁是含量最丰富的微量元素（2.3 - 25.6微克/克干重）。所有样品的铬含量均低于定量限，铝含量较低：0.04 - 1.80微克/克干重。线性判别分析清楚地将 和 样品与其他样品区分开来。总之，这些来自巴西半干旱卡廷加地区的油籽似乎有潜力作为矿物质的天然来源，主要是钾。
