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The survival of microencapsulated bacteria in the simulated human GIT. (a) The double layers of the microcapsules were intact in the initial stage (b) The outer chitosan layer was shrunken and decreased in the size in the SGJ stage (c and d) Both the chitosan and alginate layers were disrupted in the SSJ stage and SCJ stage, respectively. The dark arrow in C points to the disrupted alginate while in D the arrow points to the disrupted chitosan layers
