Avaliação dos compostos fenolicos e atividade antioxidante em diferentes partes da planta de variedades de sorgo

• Mohamed Zaitri Laboratoire des Sciences Fondamentales, Université Amar Telidji, BP 37, G 03000, Laghouat, Algeria. https://orcid.org/0009-0001-5631-4370
• Badreddine Belhadi Laboratoire des Sciences Fondamentales, Université Amar Telidji, BP 37, G 03000, Laghouat, Algeria. Laboratoire d’Etudes et Développement des Techniques d’Epuration et de Traitement des Eaux et Gestion Environnementale (LEDTEGE), Département des sciences physiques, Ecole Normale Supérieure Cheikh Mohamed El-Bachir El-Ibrahimi, ENS-KOUBA, B.P N° 92 16308 Vieux Kouba, Algiers, Algeria https://orcid.org/0009-0008-2637-8868
• Mohamed Benalia Laboratoire des Sciences Fondamentales, Université Amar Telidji, BP 37, G 03000, Laghouat, Algeria. https://orcid.org/0009-0006-9458-4810
• Redha Ouldkiar Laboratoire d’Etudes et Développement des Techniques d’Epuration et de Traitement des Eaux et Gestion Environnementale (LEDTEGE), Département des sciences physiques, Ecole Normale Supérieure Cheikh Mohamed El-Bachir El-Ibrahimi, ENS-KOUBA, B.P N° 92 16308 Vieux Kouba, Algiers, Algeria. Laboratory of Nutrition, Biodiversity and Environment, Faculty of Science, University of Yahia Fares, Medea, Algeria https://orcid.org/0000-0002-9629-8897
• Rachid Souilah Laboratoire des Sciences Fondamentales, Université Amar Telidji, BP 37, G 03000, Laghouat, Algeria. Laboratoire d’Etudes et Développement des Techniques d’Epuration et de Traitement des Eaux et Gestion Environnementale (LEDTEGE), Département des sciences physiques, Ecole Normale Supérieure Cheikh Mohamed El-Bachir El-Ibrahimi, ENS-KOUBA, B.P N° 92 16308 Vieux Kouba, Algiers, Algeria. Département de physique, Ecole Normale Supérieure Taleb Abderrahmane, ENSL, B.P 4033 Laghouat, Algeria. https://orcid.org/0009-0008-0271-7749
• Djaffar Djabali Laboratoire d’Etudes et Développement des Techniques d’Epuration et de Traitement des Eaux et Gestion Environnementale (LEDTEGE), Département des sciences physiques, Ecole Normale Supérieure Cheikh Mohamed El-Bachir El-Ibrahimi, ENS-KOUBA, B.P N° 92 16308 Vieux Kouba, Algiers, Algeria. https://orcid.org/0000-0002-4819-9077

Palavras-chave: ração, metabólitos secundários, taninos, flavonoides, atividade antioxidante

Resumo

O campo da produção de ração animal é considerado uma das áreas mais importantes na produção pecuária. Dado que o setor pecuário na Argélia enfrentou muitos problemas, como a escassez de água e o alto custo dos alimentos tradicionais, é importante encontrar outras fontes locais para superar essas dificuldades. Este estudo teve como objetivo determinar o conteúdo de metabólitos secundários, incluindo compostos fenólicos totais, taninos e flavonoides, e a atividade antioxidante em diferentes partes (folhas, caules e resíduos de panícula) de dez variedades de sorgo encontradas no deserto argelino e cultivadas na região de Bordj Bou Arreridj, na Argélia. Os resultados mostraram diferenças significativas entre os conteúdos das amostras estudadas, bem como entre as três partes diferentes da planta, a saber, as folhas, os caules e os resíduos da panícula. O conteúdo total de fenólicos variou de 122,33 a 1.344,44 mg EAG.100 g^-1, com níveis de taninos de 4,84 a 927,78 mg EAG.100 g^-1, enquanto os valores de flavonoides variaram de 0,24 a 558,25 mg EQ.100 g^-1. A atividade antioxidante também mostrou  uma variação significativa, com valores de DPPH entre 46,10 e 1481,68 mg AAE.100 g^-1, FRAP de 31,76 a 1.145,92 mg AAE.100 g^-1, e valores de ABTS variando de 28,89 a 459,92 mg AAE.100 g^-1. Esses resultados confirmaram que as plantas de sorgo não apenas representavam uma fonte de compostos metabólicos primários, como fibras, amido, proteínas e materiais energéticos usados como ração animal, mas também poderiam ser utilizadas como uma rica fonte de compostos fenólicos com um valor efetivo na saúde humana.

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