| 摘要 |
PROBLEM TO BE SOLVED: To provide a feather powder which has a low water content useful for various applications and good color and odor and is refined; and to provide a method for advantageously industrially producing the feather powder having the properties. SOLUTION: The feather powder is prepared by chemical pulverization of a poultry feather and has a specific composition, size distribution, a smell degree and whiteness. The method for producing the feather powder includes: (A) the step of alkalizing the poultry feather with an alkali chemical in a water-based medium under the conditions of a pH of 12.5-14.0 and a temperature of 30-60°C; (B) the step of performing oxidation treatment of an alkalized liquid including the feather obtained in the step (A) with an oxidizer under the conditions of a pH of 8.0-13.0 and a temperature 30-60°C; and (C) the step of neutralizing, solid-liquid separating, washing, and drying the oxidation treatment liquid provided in the step (B). COPYRIGHT: (C)2010,JPO&INPIT |
