production of inhibitor compounds by LAB can not be excluded.
Although it was not possible to verify these hypothesis, the com-
bination of LAB and propionibacteria must to be taken into account,
when a high P. freudenreichii count is required. The growth of dairy
propionibacteria in milk had previously been tested in different
studies, with varying degrees of success. Because of its nitrogen
requirements, P. freudenreichii is known to grow poorly in milk
(Falentin et al., 2010; Piveteau et al., 2000), thus hampering the
production of fermented milk with Propionibacteria. Ekinci and
Gurel (2008) produced fermented milk with dairy propionibac-
teria as an adjunct culture, but these propionibacteria did not grow
in the fermented milk and the count remained low (