lthough S. thermophilus is known to be fructose
positive and galactose negative, 52 out of 66 isolates were found to
be fructose negative, and 41 out of 66 were determined to be
galactose positive. Galactose positive S. thermophilus strains are
technologically important, since they can inhibit the growth of
undesirable lactic acid bacteria, and prevent the browning defects