“After fermentation” or “Days of storage” as fixed factor. To allow graphical representation and statistical analysis of Salmonella spp. and L. monocytogenes counts, absence of the pathogens in 25 g of product was considered to be 0 CFU/g and the applied logarithmic scale transformation was log (N þ 1), i.e. absence in 25 g of product corresponded to 0 log CFU/g.