Aqueous extract of pomegranate peels (Punica granatum) encapsulated by spray drying.

Tannins, as punicalagin, represent the predominant class of bioactive substances from pomegranate, concentrating mostly in the peels and fruit mesocarp. The aim of this study was to select the wall materials (gum Arabic, Capsul™ and maltodextrin) for microencapsulating by spray drying an aqueous extract with 14% insoluble solids obtained from pomegranate peels. It was observed no statistical differences on punicalagin concentration in all powdered products. However the agents Capsul™ and maltodextrin were responsible for the better retention of punicalagin in the powdered product. So the stability of dried extracts makes it suitable for industrial or in agricultural applications.IDS 2014. August 24-27. Editors: Julien Andrieu, Roman Peczalski, Séverine Vessot. Series Editor: Arun S. Mujumdar