Eight strains of Lactobacilli(a, b, b´, c, d, e, f and g) Here isolated from seven Korean liquid-yogurts(A, B, C, D, E. F and G), and identification and tolerance-test to digestive fluids were carried out. Isolate a from yogurt A and isolate a from yogurt E were identified as L. casei, isolate b from yogurt B as L. acidopltihs, isolate d from yogurt Das L. bulgaricus, isolate f from yogurt F as L. lielveticus, and isolate b´ from gurt B, isolate c from yogurt C and isolate g from yogurt Gas L. jugurti, respectively. Isolate f(L. helveticus) and c(L. jugurti) showed high tolerance to artificial gastric juice but didn´t to bile acid. Isolate b(L. acidophilus), a(L. casei), and e (L. casei) showed high tolerance to both artificial gastric juice and bile acid, but isolate d (L.
bulgaricta), b´(L. jurgurti) and g(L. jugurti) did not.
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