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Microencapsulation of Eugenia uniflora L. juice by spray drying using fructans with different degrees of
R I Ortiz-Basurto1, M E Rubio-Ibarra1, J A Ragazzo-Sanchez1
1Instituto Tecnológico de Tepic. Av. Tecnológico #2595, Col. Lagos del Country, C. P. 63175, Tepic, Nayarit, Mexico.
Abstract:
The objective of this work was to microencapsulate pitanga (Eugenia uniflora L.) juice by spray drying, using High Performance Agave Fructans (HPAF) and High Degree of Polymerisation Agave Fructans (HDPAF) and maltodextrin (MD), respectively, as the wall materials. The physicochemical and antioxidant properties of the capsules during storage at various temperatures were evaluated. The microparticles developed using fructans HPAF and HDPAF, exhibited similar physicochemical and flow properties to those presented by the microparticles prepared with MD. The highest yield and concentration of anthocyanins after drying and during storage were found for a 1:6 core:wall material ratio. The total color change was a good indicator of the microcapsule stability. This study showed that both fructans fraction possess similar encapsulating properties to MD and that the HDPAF were more efficacious than MD at protecting the antioxidants during drying and storage.
