beta-carotene-loaded liposome dispersions stabilized with xanthan and guar gums: Physico-chemical stability and feasibility of application in yogurt

Autor(es)

Toniazzo, Talse ; Berbel, Isis F. ; Cho, Stefany ; Favaro-Trindade, Carmen S. ; Moraes, Izabel C. F. ; Pinho, Samantha C.

• Tipo de documento: Artigo Científico
• Fonte: LWT-FOOD SCIENCE AND TECHNOLOGY; v. 59, n. 2, p. 9-pg., 2014-12-01.

Resumo

The objective of this work was to produce beta-carotene-loaded liposomes using proliposomes and to test their incorporation in yogurts. Multilamellar liposome dispersions were stabilized by the addition of a mixture of xanthan and guar gums as thickeners, and vesicles exhibited an average diameter of approximately 2000 nm. The liposomes were capable of protect the beta-carotene from degradation for a period of 95 days; in fact, nearly 90% of the encapsulated carotenoids were preserved after this time. The dispersions were characterized by transmission electron microscopy, differential scanning calorimetry and rheology. The thermal analyses showed that neither the beta-carotene nor the gums affected the liposome bilayer structure. Moreover, the mixture of gums was highly effective in avoiding beta-carotene-loaded liposome aggregation over the storage time, and the data showed that a higher thickener concentration did not necessarily construct a more stable system. The physico-chemical characterization of the yogurts showed that their texture of both formulations A and B was not affected by the incorporation of the liposomes. The grades assigned were 7.40 +/- 1.22 and 6.87 +/- 1.43, respectively. This shows that they did not differ significantly, indicating the real possibility that at least part of the artificial colorants can be replaced by the encapsulated beta-carotene-loaded liposomes. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 11/01277-0 - Estabilização de dispersões lipossomais utilizando hidrocolóides: estudo de caso para encapsulação de beta-caroteno
• Beneficiário: Stefany Cho
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 11/03901-3 - Dispersões de lipossomas encapsulando beta-caroteno e estabilizadas com hidrocolóides: caracterização e aplicações
• Beneficiário: Taíse Toniazzo
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 09/01087-7 - Incorporação de carotenóide em lipossomas por hidratação de partículas secas de fosfolipídios
• Beneficiário: Samantha Cristina de Pinho
• Modalidade de apoio: Auxílio à Pesquisa - Regular