Pectin and whey protein concentrate were
used as wall and coating materials, respectively. First, an emulsion
was obtained using an aqueous solution of pectin (2% w/w) at pH 4.0
and melted unsalted butter (2% w/w) through homogenization
(Ultraturrax homogenizer, IKA Works Inc., Staufen, Germany) at
14,000 rpm for 5 min.