Lactic acid bacteria isolated from traditional Iranian butter with probiotic and cholesterol-lowering properties: In vitro and in situ activity.

Producing butter from yogurt is known as a traditional way practiced in Iran and elsewhere, particularly in rural areas. Lactic acid bacteria (LAB) with probiotic and cholesterol-lowering properties were isolated from traditional butter collected in different regions of Iran. Then, isolates were identified and applied as adjunct culture in industrial butter production.