PURPOSE: To obtain a taste-related protein extractant capable of extracting a taste-related protein which exists on the tongue and plans an important role in manifestation of sweetness, flavor, etc., and of changing taste sensitivity of the tongue.
CONSTITUTION: This taste-related protein extractant comprises a suspension of liposome containing an amide bond-containing phosphatidylcholine of formula I (R1 and R2 are 8-24C alkyl or 8-24C alkenyl), preferably 1,2- dimyristoylamido-1,2-deoxyphosphatidylcholine(DDPC). The suspension of liposome comprises the compound of formula I and a phospholipid for forming an ordinary liposome, preferably a phosphatidylcholine of formula II (R3 and R4 are R1 and R2) such as egg yolk lecithin or dimyristoylphosphatidylcholine(DMPC) and a mixture of DDPC and egg yolk lecithin or DMPC in the molar ratio of 4:6 may be cited as the suspension of liposome. The extractant is brought into contact with the surface of epithelium of the tongue to extract a taste-related protein existing on the surface of epithelium of the tongue.
TSUJII KAORU
SUNAMOTO JUNZO
