The oil distribution at the beads’ surface was determined from
the oil extraction profile. Hexane was added to a known amount of
dried beads, followed by stirring for 15 min. The beads were sampled
at suitable time intervals where they were filtered, air-dried
for 30 min and weighed. The amount of extractable oil was calculated
based on the difference between the weights of beads before
and after extraction. It was expressed as the percentage of the
extractable oil (W6) with respect to the amount of oil encapsulated
before drying (W3)