Survival of K. marxianus CIDCA 8154 (a) and L. plantarum CIDCA 8327 (b) during film storage at 20°°C. Kefiran films containing individual microorganisms (●), Mix kefiran films (▲) and glycerol plasticized Mix kefiran films (■). Viable microorganisms during storage (N) and in recently obtained film (N0).