Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/70443
Type: Artigo de periódico
Title: Production of stabilized sub-micrometric particles of carotenoids using supercritical fluid extraction of emulsions
Author: Santos, DT
Martin, A
Meireles, MAA
Cocero, MJ
Abstract: Sub-micrometer particles of carotenoids (beta-carotene and lycopene) suspended in aqueous media were produced by extraction of the organic solvent from the droplets of an oil-in-water emulsion with supercritical CO2. The influence of the process parameters emulsion flow rate, concentration of surfactant/carrier material and pressure on product characteristics was evaluated. Suspensions containing stabilized carotenoids with final particle size of 344-366 nm, encapsulation efficiency of 34-89% and degree of isomerization from carotenoid trans to cis forms in the range of 0.02-15%, were obtained. Independently of the type of carotenoid used, emulsion flow rate influenced the production of suspensions of carotenoids, particularly the encapsulation efficiency and the degree of isomerization. Higher encapsulation efficiencies, but also higher degradations were obtained when beta-carotene was employed instead of lycopene. The concentration of surfactant/carrier material was the only process parameter that influenced the final particle size, while the encapsulation efficiency and degree of isomerization were influenced also by the concentration of surfactant/carrier material and by pressure. (C) 2011 Elsevier B.V. All rights reserved.
Subject: Carotenoid
beta-Carotene
Lycopene
Supercritical fluid extraction of emulsions
Nanosuspension
Encapsulation
Stabilization
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.supflu.2011.09.011
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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