Impacto in vitro de taninos condensados nos metabólitos cecais de frangos de corte
DOI:
https://doi.org/10.11606/issn.1678-4456.bjvras.2021.174733Palavras-chave:
Procianidinas, Prodelfinidinas, 1H-NMR, Aminoácidos, Ácidos graxos, Fermentação in vitroResumo
Taninos são um grupo diversificado de compostos fenólicos derivados de plantas. Os taninos condensados (TCs) representam o maior subgrupo de taninos extraídos das flores de tília (Tilia L) e de folhas negras (acácia-bastarda). Estes extratos foram examinados para a avaliação dos seus efeitos no perfil metabólico do ceco de frangos de corte. Com o emprego da ressonância magnética nuclear in vitro (1H-NMR) combinada com estatística multivariada, o presente trabalho foi aplicado pela primeira vez para investigar como três diferentes composições de TCs, unidades de procianidinas (PC) e/ou prodelfinidinas (PD) influenciariam os produtos metabólicos finais dos conteúdos cecais de frangos de corte. Na presença de taninos, houve um significativo decréscimo de glutamato, leucina, lisina, piroglutamato, fenilalanina, prolina e sarcosina. Os extratos de TCs influenciaram significativamente a fermentação, aumentando as concentrações de alguns ácidos graxos, tais como o acetato, butirato e propionato, enquanto em contraste, houve um decréscimo do lactato entre os tratamentos. Este trabalho identificou aspectos estruturais chave que os TCs contêm, tanto as altas proporções molares de PD como as de PC, as quais podem ser úteis para aumentar a utilização de alimentos em frangos de corte.
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