Utilization of Buckwheat Husks through a Two-stage Cooking and Carbonization Treatment

Abstract

Buckwheat husks were treated by cooking with water followed by carbonization. By cooking buckwheat with water, about 600 mg of rutin, a well-known bioactive polyphenol, was extracted per kilogram of husks. After cooking, the wet buckwheat husks were carbonized and yielded useful char and vinegar.