“…dairy products, meat and vegetables) which can be easily retrieved on selective plates, isolation from human feces is hampered by bifidobacteria, that present similar nutritional and environmental requirements but are much more numerous (Quartieri et al ., ). Investigations based on cultivation of fecal lactobacilli indicated some recurring species such as L. acidophilus , L. brevis , L. casei , L. crispatus , L. delbrueckii , L. fermentum , L. gasseri , L. jensenii , L. johnsonii , L. mucosae , L. paracasei , L. plantarum , L. reuteri , L. rhamnosus , L. ruminis , L. salivarius and L. vaginalis (Reuter, ; Dal Bello et al ., ; Ahrnè et al ., ; Delgado et al ., ; Lönnermatk et al ., ; Öztürk and Meterelliyöz, ). Consistently, species‐specific amplification and sequencing of 16S rRNA gene confirmed the presence of several of the above‐cited species (Heilig et al ., ).…”