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Color Development in Carotenoid-Enriched Bigels: Effects of Extraction Method, Saponification, and Oleogel-to-Hydrogel Ratios on CIELAB Parameters

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Autor(es):
Ramos-Souza, Caroline ; Bandoni, Daniel Henrique ; De Rosso, Veridiana Vera
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: GELS; v. 11, n. 10, p. 16-pg., 2025-10-14.
Resumo

Bigels are promising delivery systems for bioactive compounds, combining the properties of hydrogels and oleogels. Pequi carotenoids, characterized by their natural yellow fluorescence, hold potential to replace the artificial dye tartrazine in foods while simultaneously enhancing their functional properties. This study developed food-grade bigels with varying oleogel-to-hydrogel ratios (40%, 60%, 80% OG) to assess the pigmentation capacity of pequi carotenoid extracts. Hydrogel contained agar and xanthan gum, while oleogel comprised beeswax, lecithin, sunflower oil, and 400 mu g/100 g carotenoid extract. Bigel color was analyzed using the CIELAB system. Linear and multiple regression models were applied to assess the influence of crosslinking time (1 vs. 12 h), extraction solvent (acetone vs. [BMIM][BF4]), saponification, and oleogel ratio on color parameters. The color of the carotenoid-enriched bigels was mainly influenced by the extraction solvent and the oleogel ratio, while saponification and crosslinking time had only minor impacts. Although changes in L*, a*, and b* were observed across samples, Delta E* values generally reflected low perceptibility. Notably, more evident color differences were associated with variations in solvent type and oleogel ratio. These findings contribute to a better understanding of how formulation parameters influence the pigmentation behavior and support the development of natural, visually appealing functional foods. (AU)

Processo FAPESP: 24/10635-8 - Bigéis para impressão 3D de alimentos com carotenoides de pequi incorporados: Insights sobre digestão gastrointestinal dinâmica in vitro, citotoxicidade e avaliação de bioatividade antioxidante
Beneficiário:Caroline Ramos da Silva Souza
Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado Direto
Processo FAPESP: 21/02692-3 - Estudo para substituição de corantes artificiais por carotenoides de frutas brasileiras: respostas tecnológicas inovadoras para aplicações em alimentos
Beneficiário:Veridiana Vera de Rosso
Modalidade de apoio: Auxílio à Pesquisa - Regular
Processo FAPESP: 21/00596-7 - Estudo da substituição do corante amarelo tartrazina por carotenoides de Pequi extraídos utilizando líquidos iônicos de alta performance
Beneficiário:Caroline Ramos da Silva Souza
Modalidade de apoio: Bolsas no Brasil - Doutorado Direto