USA HISTORY

Detailed explanation-1: -Natural indigo is obtained from a variety of plants, the most widely used one being indigofera tinctoria. This shrub grows wild and is cultivated in tropical areas throughout the world. Indigo powder-the famous blue dye-is extracted from the leaves of the indigo plant.

Detailed explanation-2: -Isatis tinctoria, also called woad (/ˈwoʊd/), dyer’s woad, or glastum, is a flowering plant in the family Brassicaceae (the mustard family) with a documented history of use as a blue dye and medicinal plant.

Detailed explanation-3: -Dye is obtained from the processing of the plant’s leaves. They are soaked in water and fermented in order to convert the glycoside indican naturally present in the plant to the blue dye indigotin.

Detailed explanation-4: -The primary use for indigo is as a dye for cotton yarn, mainly used in the production of denim cloth suitable for blue jeans; on average, a pair of blue jeans requires just 3 grams (0.11 oz) to 12 grams (0.42 oz) of dye. Smaller quantities are used in the dyeing of wool and silk.

Detailed explanation-5: -Indigo dye is dye with a distinctive blue color (see indigo). The chemical compound that constitutes the indigo dye is called indigotin. The ancients extracted the natural dye from several species of plant as well as one of the two famous Phoenician sea snails, but nearly all indigo produced today is synthetic.