Explanation

A class of natural fiber made from animal hair or secretions. The most important varieties are wool and silk; Raw leather is a composite materials composed of collagen fiber woven fabric, cuticle and connective tissue, which is a naturally generated animal fiber product. animal fiber is mainly composed of a series of amino acids that are combined by peptide bonds to form a chain like protein. For example, the keratin of wool is composed of cystine, aspartic acid, glutamic acid, arginine and lysine. The silk protein of cooked silk is composed of glycine, alanine, tyrosine, etc. animal fiber has the chemical properties of common protein and is mainly used as textile materials.

Classification