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. Author manuscript; available in PMC: 2014 Jan 1.
Published in final edited form as: J Mater Chem B. 2012 Nov 23;2013(7):1002–1009. doi: 10.1039/C2TB00058J

Fig. 1.

Fig. 1

Typical phase images of microcapsules formed after coating (coating time: 3 min) plain alginate microbeads with chitosan either without mannitol washing before coating in 0.4 % chitosan solution (A) or with mannitol washing before coating in 0.1 % (B), 0.5 % (C), and 0.4 % (D) chitosan solution together with surface zeta potential (E) and ATR-FTIR spectra (F) showing successful preparation of the ACA (alginate-chitosan-alginate) microcapsules (liquid core): 1, sodium alginate; 2, chitosan; 3, plain alginate microbeads; 4, AC microcapsules; 5, ACA microcapsules; and scale bar (applicable to all micrographs), 100 μm