Fig. 2

Blastospore (BS) viability after drying/dissolving was significantly reduced in pure polyvinyl alcohol (PVA) 10-98, but adding polyethylene glycol 4000 (PEG) and soy lecithin (Lec) significantly enhanced blastospore viability in all PVA types (a). The blastospore survival significantly decreased depending on the molecular weight and degree of hydrolysis of pure PVA, but PEG and Lec counterbalanced these effects (b). Dried PVA films were immersed and dissolved in 0.9% NaCl and CFU determined via standard plate counting on semi-selective PDA. Sealed Petri dishes were cultivated at 23 °C for 14 days and checked daily for CFU. Different letters above bars indicate significant differences according to one-way ANOVA with Games Howell post-hoc n = 5 for dried/dissolved samples, and with Bonferroni post-hoc n = 5 for survival. Upper and lower case letters refer to each other only