Determination of the Hydrophobic Fraction of Ca, Fe, Mg and Zn in Dark Color Honeys Using Solid Phase Extraction and Flame Atomic Absorption Spectrometry

نویسندگان

  • Pawel Pohl
  • Helena Stecka
  • Krzysztof Greda
  • Piotr Jamroz
چکیده

Neste estudo, avaliou-se a fração hidrofóbica de Ca, Fe, Mg e Zn em méis escuros por meio de extração em fase sólida utilizando material à base de sílica gel com grupos ativos fenil ligados monomericamente. Verificou-se que Fe está associado com esta fração, provavelmente compostos polifenólicos, no mais alto grau. A contribuição da fração hidrofóbica no conteúdo total deste elemento nos méis analisados representou 7-43%. A confiabilidade destes resultados foi verificada através de extração em fase sólida utilizando material à base de sílica gel com grupos ativos octadecil ligados polimericamente (Superclean ENVI DSC-18). Além disso, estabeleceu-se uma forte correlação positiva entre a concentração de Fe na fração hidrofóbica avaliada e a densidade óptica dos méis escuros, indicando uma possível contribuição dos complexos azuis deste metal com substâncias fenólicas para a cor global do mel.

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تاریخ انتشار 2012