A dye is a colored substance that chemically bonds to the substrate to which it is being applied. This distinguishes dyes from pigments which do not chemically bind to the material they color. Dye is generally applied in an aqueous solution and may require a mordant to improve the fastness of the dye on the fiber.
Indigo is a deep color close to the color wheel blue, as well as to some variants of ultramarine, based on the ancient dye of the same name. The word "indigo" comes from the Latin word indicum, meaning "Indian", as the dye was originally exported to Europe from India.
Indigo dye is an organic compound with a distinctive blue color. Historically, indigo was a natural dye extracted from the leaves of some plants of the Indigofera genus, in particular Indigofera tinctoria; dye-bearing Indigofera plants were commonly grown and used throughout the world, in Asia in particular, as an important crop, with the production of indigo dyestuff economically important due to the previous rarity of some blue dyestuffs historically.
Isatis tinctoria, also called woad, dyer's woad, or glastum, is a flowering plant in the family Brassicaceae with a documented history of use as a blue dye and medicinal plant. Its genus name, Isatis, derives from the ancient Greek word for the plant, ἰσάτις. It is occasionally known as Asp of Jerusalem. Woad is also the name of a blue dye produced from the leaves of the plant. Woad is native to the steppe and desert zones of the Caucasus, Central Asia to Eastern Siberia and Western Asia but is now also found in South-Eastern and Central Europe and western North America.
Camellia sinensis is a species of evergreen shrub or small tree in the flowering plant family Theaceae. Its leaves and leaf buds are used to produce the popular beverage, tea. Common names include tea plant, tea shrub, and tea tree.
Strobilanthes is a genus of about 350 species of flowering plants in the family Acanthaceae, mostly native to tropical Asia and Madagascar, but with a few species extending north into temperate regions of Asia. Many species are cultivated for their two-lipped, hooded flowers in shades of blue, pink, white and purple. Most are frost-tender and require protection in frost-prone areas.
Indigofera tinctoria, also called true indigo, is a species of plant from the bean family that was one of the original sources of indigo dye.
Monocarpic plants are those that flower and set seeds only once, and then die.
Ficus tinctoria, also known as dye fig, or humped fig is a hemiepiphytic tree of genus Ficus. It is also one of the species known as strangler fig.
Indigofera suffruticosa, commonly known as Guatemalan indigo, small-leaved indigo, West Indian indigo, wild indigo, and anil, is a flowering plant in the pea family, Fabaceae.
Strobilanthes kunthiana, known as Kurinji or Neelakurinji in Malayalam and Tamil and Gurige in Kannada is a shrub that is found in the shola forests of the Western Ghats in Kerala, Karnataka and Tamil Nadu. The purplish blue flower blossoms only once in 12 years, and gave the Nilgiri Mountains range its name, from the Tamil language Kurinji (flower). a small shrub, blooms once in twelve years, covering the hillsides with bluish flowers, giving the Nilgiris its name.Strobilanthes kunthiana is the most rigorously demonstrated, with documented bloomings in 1838, 1850, 1862, 1874, 1886, 1898, 1910, 1922, 1934, 1946, 1958, 1970, 1982, 1994, 2006 and 2018, these have no match to Solar cycles.
Persicaria tinctoria is a species of flowering plant in the buckwheat family. Common names include Chinese indigo and Japanese indigo. It is native to Eastern Europe and Asia.
Garcinia dulcis is a tropical fruit tree native to the Philippines, Java, Lesser Sunda Islands, eastern Indonesia, and Papua New Guinea. It was domesticated early and spread inland into mainland Asia. It is commonly known as mundu or munu in Indonesia and Malaysia, baniti or taklang-anak in the Philippines, and maphuut or ma phut in Thailand.
Strobilanthes crispa is a shrub which originated from Madagascar, and is now found across south east Asia. It is a member of the family Acanthaceae. It is known as pokok pecah kaca or pokok pecah beling in Malaysia, and pecah beling, enyoh kilo, kecibeling or kejibeling in Indonesia. The leaves are used traditionally for treatment of cancer and diabetes, usually taken as a tea or infusion of the leaves.
Strobilanthes callosa(Synonym: Carvia callosa Bremek) is a shrub found mainly in the low lying hills of the Western Ghats, all along the west coast of India. Its standardized Hindi name is maruadona (मरुआदोना) which it is called in the state of Madhya Pradesh where it is also found. In the state of Maharashtra, in the Marathi language, and other local dialects and in the neighboring state of Karnataka, the shrub is locally known as karvi (कारवी), sometimes spelled in English as karvy.
Natural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The majority of natural dyes are vegetable dyes from plant sources—roots, berries, bark, leaves, and wood—and other biological sources such as fungi.
Dyeing is the craft of imparting colors to textiles in loose fiber, yarn, cloth or garment form by treatment with a dye. Archaeologists have found evidence of textile dyeing with natural dyes dating back to the Neolithic period. In China, dyeing with plants, barks and insects has been traced back more than 5,000 years. Natural insect dyes such as Tyrian purple and kermes and plant-based dyes such as woad, indigo and madder were important elements of the economies of Asia and Europe until the discovery of man-made synthetic dyes in the mid-19th century. Synthetic dyes quickly superseded natural dyes for the large-scale commercial textile production enabled by the industrial revolution, but natural dyes remained in use by traditional cultures around the world.
Indirubin is a chemical compound most often produced as a byproduct of bacterial metabolism. For instance, it is one of the compounds responsible for the generally benign condition purple urine bag syndrome, resulting from bacteria metabolizing indoxyl sulfate found naturally in urine.
Strobilanthes dyeriana, the Persian shield or royal purple plant, is a species of flowering plant in the acanthus family Acanthaceae, native to Myanmar.
Strobilanthes alternata, may be known as red ivy, red-flame ivy, or waffle plant, is a member of the family Acanthaceae native to Java. It is a prostrate plant with purple colored leaves.
