The present invention provides a novel lactobacillus and a use for same, the lactobacillus being separated from kimchi and thus highly safe, and having various types of biological activity such as memory improving activity, tight junction protein expression inducing activity, antioxidation activity, lipopolysaccharide (LPS) generation-suppressing activity, and β-glucuronidase inhibiting activity. The novel lactobacillus according to the present invention can be used as a functional food medicine material for preventing, improving, or treating degenerative brain diseases or cognitive function disorders.
