472626.fig.001a
(a)
472626.fig.001b
(b)
472626.fig.001c
(c)
472626.fig.001d
(d)
Figure 1: SEM photomicrographs of OSA starch/alginate containing PenG (a), a section near the surface of the bead (b), beads without PenG (c), and pure PenG (d).