| 摘要 |
<p>Process for removing the various amino-acids of the keratine of hairs which comprises, after hydrolysis of the hairs by hydrochloric acid and removal of fatty acids with a chlorinated solvent, the removal of amino-acids in the following order: first cystine, then arginine in the form of benzyleden-arginine, leucine in the form of dileucine hydrochlorate and tyrosine. Finally the glutamic acid, serine and threonine may be removed. </p> |
