[Hydrolysis of waste keratin material for use of certain sulfonated acids. I. Chemical characteristics of protein waste products].

We have fixed optimal conditions for preparation to analysis of waste keratin material (bristle, cerebellum and hoof), which then description of the chemical character define in there fat, moisture and ash content, nitrogen: total and ammonium and qualitative and quantitative composition amino acids. Results, which we obtained indicate to possibility utilization waste keratin material to obtain of full value, dyeability protein products.