Dainichiseika Color & Chemicals Mfg. Co., Ltd.

Mitsutaka Seki

Shinya Tsuchida

Takanori Sannan

Shojiro Horiguchi

Kazushige Ieda

Satoru Yoshinaga

A purified chitin has a total content of fatty acids and salts thereof not higher than 0.2 wt. % in terms of fatty acids. The purified chitin can be produced by washing a chitin with at least one solvent selected from the group consisting of organic solvent and water-containing organic solvents such that a total content of fatty acids and salts thereof is lowered at least to 0.2 wt. % in terms of fatty acids.

Purified chitins and production process thereof

A seed colorant useful especially in coloring seeds to distinguish same from those to be used for foods is formed of an aqueous medium such as water, a dye and/or pigment of a desired hue, and a binder resin composed of the salt of chitosan and an organic acid. The seed colorant may additionally contain spherical resin particles.

Growing community of inventors

Kawaguchi, Japan

Mitsutaka Seki