isolated strain AST18 with antifungal activity from Chinese traditional dairy
products and identified it as Lactobacillus casei. The antifungal activities
of L. casei AST18 exerted a synergistic effect caused by lactic
acid and cyclo-(Leu-Pro) (Li, Liu, Zhang, Cui, & Lv, 2012). The purification
of antifungal n compounds from LAB is complicated, and
isolated antifungal compounds remain a controversial subject.