Microbiological analyses of yogurt were performed to determine the influence of the HS addition on the starter. Streptococci
were counted on Me17 agar (Oxoid, Basingstoke, Hampshire, England) and were incubated aerobically at 37 C for 24 h. Lactobacilli
were counted on MRS agar (Lab M Limited, Heywood, Lancashire,
United Kingdom) under anaerobic incubation at 37 C for 48 h. The
samples were analysed in duplicate.