Abstract
The Blueberry cv. Biloxi is characterized by its high phenolic compounds content, mainly anthocyanins, which are relevant for their application in the prevention of chronic degenerative diseases. In this study, we have demonstrated that the encapsulation of blueberry extracts is feasible using as a matrix a combination of biopolymers through the electrohydrodynamic process from aqueous solutions. Corn prolamin zein, whey protein concentrate and high polymerization grade agave fructans were used as polymers. The properties of the solution and the capacity of atomization with high voltage were evaluated by adding glycerol as an adjuvant. The results of this investigation showed that most of the solutions were within the recommended ranges to be electrospun. However, not all exhibited stability when the blueberry polyphenolic extract was added. The morphology of structures was characterized and then related to the properties of the solution. The corn prolamin zein was able to obtain capsules loaded with encapsulation efficiency of 52.65% of polyphenolic extract by electrospraying process with homogeneous morphology and smooth, as well as continuous nanofibers by electrospinning process.
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