Abstract: Provided is a peptide composition for preventing or treating Alzheimer's dementia. A peptide or a salt substituent thereof according to the presently claimed subject matter exhibits effects such as suppression of LPS-mediated cytokine production, suppression of LPS-induced neuroinflammation, amelioration of cognitive impairment, suppression of beta amyloid or tau protein aggregation, and suppression of neuronal loss. The polypeptide or the salt substituent thereof can permeate the blood-brain barrier, and thus, is expected to be usefully used for preventing or treating Alzheimer's dementia.

Abstract: The present invention relates to a composition and a kit for removing lipopolysaccharide (LPS), comprising a polypeptide having binding ability to lipopolysaccharide or a salt substitute thereof as an active ingredient, and a method for removing lipopolysaccharide. The polypeptide or a salt substitute thereof according to the present invention has very excellent binding ability with lipopolysaccharide, and the efficiency of removing lipopolysaccharide during a purification process in a protein production process using E. coli is high, such that the lipopolysaccharide removal efficiency can be maximized.