THE KERATINIZATION PROCESS 



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(cysteic acid), proline, serine and threonine and smaller amounts of 

 alanine, aspartic and glutamic acids, leucine, lysine and phenylalanine than 

 the original wool. The reverse is true of the a-fraction. These figures 



Table 15. Protein Fractions Obtained from Oxidized 

 Wool. (Alexander and Hudson, 1954.) 



* S content of original wool averages 3-5 %. 

 f Alexander and Hudson (1954). 

 X Earland and Knight (1956). 

 § Alexander and Smith (1955). 

 ** Corfield, Robson and Skinner (1958). 



*[[ O'Donnell and Thompson, quoted Gillespie (1960) (performic 

 acid). 



should be compared with those for " kerateine 2 " (Table 17) and those for 

 the " wool root extract " (Table 14). The higher sulphur content of 

 y-keratose shows it to be the more cross-linked and the higher proline is 



