Desenvolvimento, caracterização, atividade antimicrobiana e estabilidade de microcápsulas de oleorresina de cúrcuma
Carregando...
Data
2013-02-15
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Goiás
Resumo
This study aimed to develop general microcapsules containing turmeric oleoresin and cluster derived from turmeric suspended in canola oil from concentrated whey protein, encapsulating material, and evaluate their antimicrobial activity. Turmeric gained fresh in the municipality of Mara Rosa underwent slicing and dehydration in an oven with air circulation. Obtained as a powder after successive washes with ethanol generated containing the ethanol extract of turmeric oleoresin which was rotaevaporado generating the turmeric oleoresin. This extract was subjected to vacuum filtration in order to remove solid fractions, and this filtration gave a cluster of turmeric. Both the extract containing oleoresin such as agglomerated product obtained by filtration were suspended in canola oil and used as core material for developing microcapsules. The microcapsules obtained had good sphericity concluding that the protein concentrate of whey was a good encapsulating material to the core studied. The microcapsules and free oleoresin extract were taken for analysis of antibacterial activity using agar diffusion test and found that the extract of turmeric oleoresin can be regarded as a potential antimicrobial agent, none of the microcapsules showed antimicrobial activity against fungus, but against the bacteria showed bacteriostatic action. We evaluated the behavior of the microcapsules determining their sorption isotherms, thermal stability and glass transition temperature. Before the study concluded that: the microcapsules oleoresin showed good thermal stability at temperatures that did not exceed 225 ° C, while the turmeric powder had good stability under temperatures slightly higher, up to 250 ° C, and these results do not conclusive, necessitating characterization studies of the patterns.
Descrição
Palavras-chave
Citação
REIS, Pamela Cristina de Sousa Guardiano. Desenvolvimento, caracterização, atividade antimicrobiana e estabilidade de microcápsulas de oleorresina de cúrcuma. 2013. 88 f. Dissertação (Mestrado em Ciência e Tecnologia de Alimentos) - Universidade Federal de Goiás, Goiânia, 2013.