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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Adv Mater. 2016 Sep 12;28(43):9486–9490. doi: 10.1002/adma.201603270

Figure 1.

Figure 1

Layer-by-layer encapsulation of probiotics. a) Schematic LbL templating of chitosan and alginate on probiotic. b) Brightfield images of (i) uncoated-BC and (ii) LbL-(CHI/ALG)2-BC. SEM images of (iii) uncoated-BC and (iv) LbL-(CHI/ALG)2-BC. c) Zeta potential at each sequential layer, for up to two chitosan and alginate bilayers, (CHI/ALG)2, at pH 1.5 and 7. d) Uniform layer templating for up to three bilayers of chitosan and alginate was confirmed via measuring fluorescently labeled chitosan and alginate. e) Bilayer number modulates probiotic growth. As bilayer number increases, the time taken to reach the exponential growth phase is shifted to the right. Error bars represent standard deviation (n = 3). Bright field scale bars = 25 μm. SEM scale bars = 2 μm.