Fig. 1

Optical images of LGG microcapsules produced by the emulsification/internal gelation technique (bar = 100 μm) at (a) 0 h culture and (b) 24 culture. c Size distribution of LGG microcapsules produced by the emulsification/internal gelation technique. d Confocal laser scanning microscopy images of E. coli biofilm formation after coculture with LGG microcapsules for 24 h