Microstructural analysis of films was performed by SEM. Micrographs
of kefiran films without microorganisms or containing both,
lactobacilli and yeast, are shown on top of Fig. 1. For all kefiran films a
relatively compact structure was observed, however, the film surface
was less uniform when the microorganisms were included. Prints of
bacteria and yeasts, according to their morphology, were observed in
the surface of K-Mix and Kgly-Mix films (Fig. 1b and d).