Abstract: The object is to provide: a safe immunomodulating agent which can be used as a pharmaceutical or a food material; a method for production of the immunomodulating agent; and a novel application of a coffee extract residue. Disclosed is an immunomodulating agent comprising a coffee extract as an active ingredient. Preferably, the coffee extract is an extract containing arabinogalactan. The immunomodulating effect of the immunomodulating agent relies on the promotion of the proliferation of an immunocompetent cell such as a macrophage. The immunocompetent cell is preferably any one selected from a macrophage like strain RAW264 or J774.1, a murine splenocyte, a murine peritoneal macrophage and a murine dendrocyte. A composition containing the immunomodulating agent can be used as a composition such as a pharmaceutical composition, a food composition and a cosmetic composition.

Abstract: The object is to provide: a safe immunomodulating agent which can be used as a pharmaceutical or a food material; a method for production of the immunomodulating agent; and a novel application of a coffee extract residue. Disclosed is an immunomodulating agent comprising a coffee extract as an active ingredient. Preferably, the coffee extract is an extract containing arabinogalactan. The immunomodulating effect of the immunomodulating agent relies on the promotion of the proliferation of an immunocompetent cell such as a macrophage. The immunocompetent cell is preferably any one selected from a macrophage like strain RAW264 or J774.1, a murine splenocyte, a murine peritoneal macrophage and a murine dendrocyte. A composition containing the immunomodulating agent can be used as a composition such as a pharmaceutical composition, a food composition and a cosmetic composition.