Identificação do teor de metais em plantas de café arábica (Coffea arabica), café robusta (Coffea canephora) e café liberica (Coffea liberica) com base nas diferenças nos locais de cultivo
DOI:
https://doi.org/10.5965/22381171e27170Palavras-chave:
Café arábica, Café libérica, Identificação de metais, Perfil sensorial e café robustaResumo
Houve muitos casos de intoxicação ao consumir café. Um possível fator é a presença de conteúdo metálico que excede o limite padrão no café. Os elementos metálicos são absorvidos através das raízes. Os metais são então translocados para outros órgãos da planta (caules, folhas e frutos) através do xilema e do floema, onde são processados e acumulados e, quando do consumo humano, podem causar problemas de saúde. Portanto, é necessário identificar metais em plantas de café Arábica, Robusta e Libérica, que são geralmente conhecidas na Indonésia, uma das quais é a província de Jambi. A identificação de metais no café é realizada usando Fluorescência de Raios X (XRF) para determinar o conteúdo de metais em plantas e borra de café, em seguida, a análise morfológica é realizada usando Microscopia Eletrônica de Varredura (MEV) e a identificação de compostos bioativos usando o método de Cromatografia Líquida por Espectrometria de Massas (LC-MS) contidos na borra de café para determinar os componentes de seus compostos bioativos. Os resultados do estudo mostraram os teores de metais Fe, Si, Ca e K em plantas de café Arábica, Robusta e Libérica. As três espécies de plantas de café apresentam teores de Fe > Si > Ca > K no solo, K > Ca > Fe na parte do caule, seguidas pela parte da folha, que apresenta teores de Ca > K > Fe, e pela parte da semente, que apresenta K > Ca > Fe. Após a torrefação dos grãos de café, o teor de metais aumenta devido à alta temperatura, formando novos compostos.
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