Federal University of Pelotas (UFPel), Graduate Program in Chemistry, Chemical Metrology Laboratory (LabMeQui), 96010-900 Capão do Leão, RS, Brazil; Sul-rio-grandense Federal Institute of Education, Science and Technology, 96015-560 Pelotas, RS, Brazil.
Federal University of Pelotas (UFPel), Graduate Program in Chemistry, Chemical Metrology Laboratory (LabMeQui), 96010-900 Capão do Leão, RS, Brazil.
Food Chem. 2022 Oct 15;391:133228. doi: 10.1016/j.foodchem.2022.133228. Epub 2022 May 17.
This paper describes studies for the determination of total concentration and bioaccessible fraction of minerals in peaches by MIP OES. The PCA analysis identified 3 distinct groups of elements concerning the total concentration, which was attributed to the origin of each cultivar. Among the macroelements, K presented higher values for total concentration, while B and Fe predominated among the microelements. Regarding the bioaccessible fraction, Mn presented the highest percentage (46-84%), followed by Zn and B (10-63% and 33-57%, respectively). Pearson's correlation coefficient revealed that reducing sugars and titratable acidity can influence the mineral bioaccessibility, highlighting the strong positive correlations between reducing sugars with Mn and total acidity with Fe. Peach cultivars have satisfactory nutritional value, but the total and bioaccessible concentrations of minerals obtained do not meet the recommended daily needs, requiring the consumption of other fruits and vegetables to complement the diet.
本研究采用 MIP-OES 法测定了桃中矿物质的总量浓度和生物可给分数。主成分分析（PCA）根据每个品种的起源，确定了 3 组不同的元素总量浓度。在大量元素中，K 的总量浓度最高，而 B 和 Fe 在微量元素中占主导地位。至于生物可给分数，Mn 表现出最高的百分比（46-84%），其次是 Zn 和 B（10-63%和 33-57%）。皮尔逊相关系数显示，还原糖和可滴定酸度会影响矿物质的生物可给性，突出了 Mn 与还原糖之间以及 Fe 与总酸度之间的强烈正相关关系。桃品种具有令人满意的营养价值，但获得的矿物质总量浓度和生物可给分数都不能满足推荐的日需求量，需要食用其他水果和蔬菜来补充饮食。
