Autor(es)

Hatami, Tahmasb ; de Araujo, Erick Jarles Santos ; Dias, Arthur Luiz Baiao ; Mei, Lucia Helena Innocentini ; Martinez, Julian

• Tipo de documento: Artigo Científico
• Fonte: Food Research International; v. 178, p. 10-pg., 2024-01-16.

Resumo

beta-carotene, a natural dye renowned for its antioxidant and provitamin A activities, is hindered from direct use in food and drug products due to its susceptibility to oxidation, easy isomerization under light, heat, or acidic conditions, as well as its low water solubility and oral bioavailability. In this study, we addressed these challenges by loading beta-carotene into corn starch aerogels via supercritical carbon dioxide (sc-CO2) and assessed its loading contributions through adsorption during contact time and precipitation during depressurization. The loading process was studied under two cycles at pressure of 30 MPa, temperature of 40 degree celsius, depressurization rate of 0.4 MPa/min, and co-solvent (ethanol) mass percentage of 1.2 %. Experiments found adsorption minimally contributed to impregnation, while precipitation became the primary loading mechanism. The subsequent work focused on a mathematical model describing beta-carotene loading into corn starch aerogels via precipitation, using the law of conservation of mass and classical nucleation theory. The model shows that using pure CO2 results in a loading efficiency of 0.10 mg beta-carotene/g aerogel, while with CO2 and 1.2 % ethanol as the co-solvent, the loading efficiency increases threefold to 0.30 mg beta-carotene/g aerogel. (AU)

• Processo FAPESP: 21/01008-1 - Tecnologia supercrítica no contexto da engenharia reversa: formulação de novos produtos a partir de resíduos agroindustriais de cítricos
• Beneficiário: Julian Martínez
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/18722-6 - Desenvolvimento uma unidade supercrítico de formação de espuma por deposição para fabricação de suportes (scaffolds) 3D: Caracterização, modelagem matemática e otimização
• Beneficiário: Tahmasb Hatami
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado