蠶絲的成分是什麼?

Silk is made up of the amino acids GLY-SER-GLY-ALA-GLY and forms Beta pleated sheets. Interchain H-bonds are formed while side chains are above and below the plane of the H-bond network.
The high proportion (50%) of glycine, which is small, allows tight packing and the fibers are strong and resistant to stretching. The tensile strength is due to covalent peptide bonds. Since the protein forms a Beta sheet, when stretched the force is applied to these strong bonds and they do not break.
Silk is resistant to most mineral acids but will dissolve in sulfuric acid. It is yellowed by perspiration.
i.e.主要都是天然蛋白質纖維

蠶絲的成分主要是蛋白質。

(以前讀 Chem 有得教。)