pH 7.5) over a period of 6 h in vitro. Fig. 7a represents the release profile
of glucose from encapsulated GLS/A beads by air, vacuum and freeze
drying. In the simulated stomach solution SS1, almost none of glucose
was released from the beads up to 180 min. By transferring to the simulated
intestinal solution SI1, the release of glucose was observed after
30 min incubation (the time point of 210 min in Fig. 7a). As expected,
the release of glucose increased with incubation time and the release
rates were depended on the drying methods. The time required for
the complete release of glucose in the SI1 was 180, 150 and 90 min,
respectively, for air, vacuum and freeze dried GLS/A beads, as shown
in Fig. 7a.