GATE (TF) Textile 2021 Question Paper Solution | GATE/2021/TF/04

Question 04 (Textile Technology & Fibre Science)
Q.4The gummy substance present in raw silk fibre is
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Frequently Asked Questions | FAQs

What is Serine ?

Serine is a non-essential amino acid, which means that the body can produce it on its own. It is one of the 20 common amino acids that are the building blocks of proteins. Serine is classified as a polar amino acid due to the presence of a hydroxyl group (-OH) in its side chain. It plays important roles in protein synthesis and also serves as a precursor for other important biomolecules, such as nucleotides, phospholipids, and the amino acid glycine. Additionally, serine is involved in the regulation of various physiological processes, including the immune response, DNA repair, and cell signaling.

What is Fibroin ?

Fibroin is a fibrous protein that is the main structural component of silk produced by certain insects, such as silkworms. It is a long, continuous protein molecule composed of amino acid chains arranged in a repeating pattern. Fibroin is characterized by its high tensile strength, elasticity, and resistance to breaking, making it an ideal material for weaving into fabric. The unique properties of fibroin are attributed to its specific amino acid composition and the way the protein chains interact with one another. Fibroin is also used in various biomedical applications, including tissue engineering, drug delivery, and wound healing.

What is keratin ?

Keratin is a fibrous protein that is the main structural component of hair, nails, feathers, hooves, and horns of vertebrate animals. It provides strength and durability to these biological materials, as well as protection from external forces. Keratin is a type of scleroprotein, which means it is a hard, insoluble protein. In addition to its structural role, keratin also plays a role in protecting the skin and tissues from damage and disease. Keratin is made up of amino acids, including cysteine, which form disulfide bonds that give it its strength and stability.

What is sericin ?

Sericin is a type of protein that is produced by silkworms. It is a sticky, gum-like substance that coats the silk fibers and holds them together in the cocoon. Sericin is removed from the silk fibers during the process of degumming, which is necessary to prepare the silk for spinning and weaving. Sericin has some potential applications in the fields of medicine and cosmetics, due to its moisturizing and antioxidant properties.

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