Yoghurt has a long history of consumption as dietary product. It
presents interesting nutritional and organoleptic properties
(Astrup, 2014; El-Abbadi et al., 2014; Rizzoli, 2014) conferred by
milk fermentation by starter bacteria, the most commonly
employed being Streptococcus salivarius subsp. thermophilus andLactobacillus delbrueckii subsp. bulgaricus. During the past three
decades, yoghurt has also received considerable attention as
vehicle for probiotic bacteria and more and more probiotic yoghurts
are now available on the market (Boyer and Geng, 2014).
Probiotics are defined as “live microorganisms which when
administered in adequate amounts confer a health benefit on the
host” (FAO, 2006). Members of the genera Lactobacillus and Bifi-
dobacterium are mainly employed as probiotics, and among lactic
acid bacteria (LAB) Lactobacillus rhamnosus and Lactobacillus casei/
paracasei are frequently used and therefore, well studied (Bron
et al., 2012). The suggested minimal dose is generally agreed to