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

Author(s)

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

• Document type: Journal article
• Source: LWT-FOOD SCIENCE AND TECHNOLOGY; v. 59, n. 2, p. 9-pg., 2014-12-01.

Abstract

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)

• FAPESP's process: 11/01277-0 - Stabilization of liposomal dispersions using hydrocolloids: case study for the encapsulation of beta-carotene
• Grantee: Stefany Cho
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 11/03901-3 - Liposome dispersions encapsulating beta-carotene and stabilized with hydrocolloids: characterization and applications
• Grantee: Taíse Toniazzo
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 09/01087-7 - Incorporation of carotenoid in liposomes by hydration of dry phospholipid particles
• Grantee: Samantha Cristina de Pinho
• Support Opportunities: Regular Research Grants