Abstract
Keratin was hydrolyzated by calcium hydroxide to obtain hydrolysis products. The foaming components constituted a fractionated portion of keratin hydrolysate by membrane ultrafiltration.
Foam height and stability of the fraction were related to the moleculer weight of each fraction. Fractions with molecular weights (FMW) range from 5, 000 to 10, 000 had the highest foam heights and the greatest foam stability. Those with FMW below 5, 000 had the lowest foam height and least foam stability. Fractions with FMW above 10, 000 differed somewhat from each other in foam height and foam stability.
