title: Study on the stability of β-carotene microencapsulated with pinhão (Araucaria angustifolia seeds) starch.
abstract: Native and hydrolyzed pinhão starches were used as coating materials for β-carotene microencapsulation by freeze-drying. The purpose of the present study was to evaluate the stability of β-carotene encapsulated under three different conditions: in the presence of ultraviolet light at 25±2 °C, in the dark at 25±2 °C and in the dark at 10.0±0.2 °C. The color of the samples was also analyzed. Microcapsules prepared with native starch showed the lowest stability during storage. In contrast, microcapsules encapsulated with 12 dextrose equivalent (DE) hydrolyzed starch exhibited the highest stability. First-order kinetic and Weibull models were applied to describe the degradation of β-carotene over time. The R(2) values of the Weibull model were greater than those of the first-order kinetic model. Moreover, multivariate analyses (principal component and cluster analyses) were also conducted.
authors.affiliation: Chemical Engineering Department, Federal University of Rio Grande do Sul (UFRGS), Rua Engenheiro Luiz Englert s/n, Porto Alegre, RS 90040-040, Brazil.
authors.forename: Jordana Corralo
authors.initials: JC
authors.lastname: Spada
authors.affiliation: Institute of Food Science and Technology, UFRGS, Av. Bento Gonçalves, 9500, Porto Alegre, RS 91501-970, Brazil.
authors.forename: Caciano Pelayo Zapata
authors.initials: CP
authors.lastname: Noreña
authors.affiliation: Chemical Engineering Department, Federal University of Rio Grande do Sul (UFRGS), Rua Engenheiro Luiz Englert s/n, Porto Alegre, RS 90040-040, Brazil.
authors.forename: Ligia Damasceno Ferreira
authors.initials: LD
authors.lastname: Marczak
authors.affiliation: Chemical Engineering Department, Federal University of Rio Grande do Sul (UFRGS), Rua Engenheiro Luiz Englert s/n, Porto Alegre, RS 90040-040, Brazil.
authors.forename: Isabel Cristina
authors.initials: IC
authors.lastname: Tessaro
mesh_terms: D002214:Capsules; D019669:Embryophyta / Q000737:chemistry*; D006868:Hydrolysis; D012639:Seeds / Q000737:chemistry*; D013213:Starch / Q000737:chemistry*; D019207:beta Carotene / Q000737:chemistry*
chemical_list: D002214:Capsules; D019207:beta Carotene; D013213:Starch