of 3:2, contained a slight amount (

of 3:2, contained a slight amount (0.1%) of phosphorus, and the apparent
molecular weight was 1.1×106 Da [24]. These results suggest
that partially phosphorylated glucogalactan as APS is at least one of
the active components in EPS produced by L. bulgaricus OLL1073R-1. It
has been reported that S. thermophilus and L. bulgaricus were found to
be stimulated in growth and acid production in mixed cultures compared
to single-strain cultures [25]. Therefore S. thermophilus OLS3059
may stimulate the growth of L. bulgaricus OLL1073R-1 for the
fermentation.