BIOACCESSIBILITY OF METALLIC IONS AND PHENOLIC COMPOUNDS IN TEAS FROM MICONIA ALBICANS

• DOI: 10.22533/at.ed.3172272223111

• Palavras-chave: Cinnamon de Velho, cooking, metals, reducing action, bioaccessible fraction

• Keywords: Cinnamon de Velho, cooking, metals, reducing action, bioaccessible fraction

• Abstract:

  The bioaccessibility of Al, Ca, Cr, Cu, Mg, Zn, phenolics and flavonoids during in vitro gastrointestinal digestion of Canela de Velho (Miconia albicans) tea was investigated in 10 samples. Determinations were made by atomic and molecular absorption spectrometry. Metal concentrations in Canela de Velho tea ranged from 343 ± 18 to 1163 ± 36 µg g-1 for Al, 102 ± 23 to 347 ± 13 µg g-1 for Ca, 0.093 ± 0.009 to 0.109 ± 0.003 µg g-¹ for Cr, 0.30 ± 0.05 to 0.9 ± 0.2 µg g-1 for Cu, 264 ± 27 to 633 ± 53 µg g-1 for Mg and 1.3 ± 0.3 to 3.1 ± 0.4 µg g-1 for Zn, while the bioaccessibility percentages were from 62 ± 4 to 98 ± 3 % for Al, 26 ± 6 to 120 ± 3 % for Ca, 30.0 ± 1.0 to 62 ± 8% for Cr, 62 ± 2 to 90 ± 3% for Cu, 79 ± 8 to 108.2 ± 0.1% for Mg and 76 ± 5 to 114.0 ± 0.2% for Zn. Regarding organic compounds, the bioaccessibility values ​​ranged from 70 ± 4 to 99 ± 11 % for phenolics and from 20 ± 4 to 92 ± 2 % for flavonoids.