| abstract |
(57) [Summary] [Object] To provide an immune system stimulating composition comprising a peptide derived from soybean protein. [Structure] A peptide represented by the following formula I: His-Cys-Gln-Arg-Pro-Arg (wherein His is histidine, Cys is cysteine, Gln is glutamine, Arg is arginine and Pro is proline). Alternatively, an immune system activating composition containing a salt thereof as an active ingredient, and a method for producing the peptide by an enzymatic hydrolysis method. [Effects] The above-mentioned peptide has an action of enhancing neutrophil accumulation ability, active oxygen production ability and tumor necrosis factor production ability, and an anticancer action. |