2.1. Screening test
A total of 58 commercial cheeses were purchased at Spanish
local markets and farms. The types of cheese analyzed for the
screening of lactic acid bacteria were: fresh, half-ripened, ripened
and old-ripened cheeses from goat, cow, sheep or mixed milks.
Torte-style, flavoured and spicy cheeses were also analyzed. Samples
were stored in the dark at 4 C before analysis.