Bile salt deconjugation of 130 lactic acid bacterial isolates from human feces, fermented milk products, and probiotic capsules has been investigated on MRS media containing oxgall, bile extract, bile, taurocholic acid, taurochenodeoxycholic acid, tau...
Bile salt deconjugation of 130 lactic acid bacterial isolates from human feces, fermented milk products, and probiotic capsules has been investigated on MRS media containing oxgall, bile extract, bile, taurocholic acid, taurochenodeoxycholic acid, taurodeoxycholic acid, glycochlic acid, glycochenodeoxycholic acid, and glycodeoxycholic acid. When bile salts were deconjugated, precipitate halos around colonies or opaque granular white colonies were appeared on MRS agar containing bile salts. Opaque granular white colonies were formed when TDCA and GDCA were deconjugated. No or weak deconjugation activity was found under aerobic condition. 53 lactic acid bacterial isolates from human feces and 13 isolates from fermented milk products or probiotic capsules were found to have high deconjugation activity of bile salts.