Significant amounts of citrus by-products remain after juice processing, which is then used to obtain pectin. The pectin industry then generates a new waste. No study has characterized this residue or suggested applications for it. The main goal of this study was to compare citrus industrial by-products that remain after juice (CJB) and pectin (CPB) extraction, aiming to obtain bioactive compounds. The residues were evaluated for their chemical composition, antioxidant capacity, and polyphenols content. CJB had 2-fold higher total phenols than CPB. Moreover, CJB exhibited higher antioxidant capacity than CPB. Nine polyphenols were detected; hesperidin was the main compound on both residues. CPB had higher content of polyphenols than CJB, which can be attributed to the industry procedure of pectin extraction. Thus, this study provides support for the reuse of CPB to obtain nutraceutical compounds, converting waste into added-value products.
RESUMOEste trabalho teve como objetivo desenvolver duas formulações de bebida probiótica do tipo smoothie com iogurte e polpa de manga (F1 e F2), bem como avaliar a viabilidade dos microrganismos, a qualidade higiênico sanitária e as características físico-químicas (pH, acidez e sinérese) das bebidas ao longo de 30 dias de estocagem refrigerada. F1 foi preparada com adição de 30% de polpa de manga e 10% de açúcar ao iogurte probiótico e F2 foi adicionada de 40% de polpa e 8% de açúcar. A qualidade higiênico-sanitária foi satisfatória, e as amostras seguras para consumo. As amostras não diferiram entre si quanto ao pH, acidez titulável, sinérese e viabilidade dos microrganismos, ao longo da estocagem refrigerada, portanto, os níveis de açúcar e polpa não influenciaram significativamente as formulações. Os níveis de probióticos se mantiveram dentro da dose considerada terapêutica. Portanto, as bebidas podem ser consideradas um veículo apropriado para incorporação de probióticos e um novo produto funcional poderá ser disponibilizado para o mercado.Palavras-chave: Bifidobacterium spp., viabilidade microbiológica, leite fermentado, polpa de frutas, smoothie.
ABSTRACTThe study aimed to develop two formulations (F1 and F2) of probiotic mango
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