a careful evaluation of the efficiency of a selective medium should be
performed to avoid overestimated results during the development
of the study, since some culture media do not effectively select
probiotic cultures, as observed by several authors.It is necessary that the culture
media are previously evaluated in the matrix in question, since
dairy products such as cheese, for example, are complex matrices,
and selective media are generally evaluated in model systems using
pure cultures, which may compromise the results.