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<p>Minerals were determined in green coffee beans using an inductively coupled plasma atomic emission spectroscopy (ICP OES). Sodium, magnesium, potassium, phosphorus, calcium, manganese, iron, copper, and zinc were quantified in 10 samples of specialty coffees and 8 of traditional coffees. It employed the two types of dry digestion (<i>in natura</i> and or extract of samples obtained by the cupping protocol). The ANOVA and Tukey’s tests were applied in the obtained results with a confidence interval of 95% (α &lt; 0.05), and Principal Component Analysis (PCA) was used to evaluate the differentiation between the types of coffee. The PCA allowed the differentiation between special and traditional green coffee beans and an understanding of the attributes (potassium, iron, and copper) that influenced the differentiation between the classifications. Therefore, special and traditional green coffee beans can be differentiated using ICP OES in special and traditional dry digestion methods.</p>

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ICP OES combined with chemometric tools to differentiate green coffee beans in special or traditional

  • 期刊论文

  • 发表日期：

    2025年2月13日

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  • Winston Pinheiro Claro Gomes,
  • Gustavo Maximiano Alves,
  • Fernanda C. O. L. Martins,
  • Wanessa R. Melchert

摘要

Minerals were determined in green coffee beans using an inductively coupled plasma atomic emission spectroscopy (ICP OES). Sodium, magnesium, potassium, phosphorus, calcium, manganese, iron, copper, and zinc were quantified in 10 samples of specialty coffees and 8 of traditional coffees. It employed the two types of dry digestion (in natura and or extract of samples obtained by the cupping protocol). The ANOVA and Tukey’s tests were applied in the obtained results with a confidence interval of 95% (α < 0.05), and Principal Component Analysis (PCA) was used to evaluate the differentiation between the types of coffee. The PCA allowed the differentiation between special and traditional green coffee beans and an understanding of the attributes (potassium, iron, and copper) that influenced the differentiation between the classifications. Therefore, special and traditional green coffee beans can be differentiated using ICP OES in special and traditional dry digestion methods.