Extraction of protein from common buckwheat was investigated to improv
e low digestibility of buckwheat. Furthermore, the improvement of tast
e of tartary buckwheat was conducted by using a protein extraction pro
cedure, in which the buckwheat protein mainly consisting of globulin w
as recovered by isoelectric precipitation. In this case, the extractio
n temperature influenced greatly on a yield of the protein. The protei
n extracted from tartary buckwheat had no bitter taste.