摘要: Abstract Residues obtained by treatment of various silk fibroins with acid, alkali and hydrogen peroxide have been analysed for their constituent amino acids column chromatography. Treatment the Antheraea mylitta, Dictyoploca japonica Pachypasa otus acid or alkali, gave residues that had a considerably greater content alanine than untreated fibroins. These belong to same main X-ray group whose diffraction patterns resemble β-polyalanine, show in this respect an even resemblance synthetic fibrous polymer. It seems fairly certain these are derived from crystalline parts The Bombyx mori Anaphe moloneyi , on other hand, yield similar composition pattern original fibroin. Hydrogen has different mode attack alkali. Those that, after give enriched alanine, peroxide-resistant which increase is far less marked, only slight change occurs compared significance observations discussed relation structure them.
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