Control sample was commercial starter culture YF-L812. 1e8 are experimental
samples: SP1.1, CH9-9 4.0, 1703Ca, and 03 are Streptococcus thermophilus strains
and 3 4.5, SH3 4.3, CH9-3 4.0, SH3 4.0, and 01 are Lactobacillus delbrueckii ssp.
bulgaricus strains.