... grade: first grade "dark buckwheat flour" is nutrition flourThe protein content of dark buckwheat flour is higher than rice, millet, ... the legume proteins amino acids. And its fat content is also higher than millet, wheat, etc. ... kinds of fatty acids, among them the content of oleic acid and linoleic acid occupy more ... than 75% of fatty acids.Dark buckwheat flour is the only grain which contains rutin, ...