Dye Plants

Dye Plants

 

plants whose organs (roots, stems, leaves, flowers, fruits, seeds) and tissues (wood, bark) produce and store dyes that are contained in the plastids or are dissolved in the cellular fluid.

Dyes are found in several thousand species of plants. How-ever, only those dye plants with a high concentration of colorfast dyes are used commercially. The dyes are extracted from most plants by hot water, acids, or basic solvents; they are obtained from some plants by pressing out the juice. The same dye may produce different colors on different materials; the color is also determined by the type of mordant used. Before the appearance of synthetic dyes, which are easier and less expensive to produce, plant dyes were used predominantly to color fabrics. For some purposes, plant dyes cannot be replaced even today—for example, in the carpet, food, and cosmetics industries.

The best-known dye plants of the tropics and subtropics include a number of species of Indigofera (which yield indigo and indirubin), logwood (hematoxyline), several species of oak in North America (quercitron), and turmeric (the yellow dye curcumine). Common dye plants in the USSR include a number of species of juniper having cones, or berries, with substances that yield a yellow, brown, greenish gray (khaki), or violet color. Other common dye plants include onion (an infusion of the skin gives a brown color), saffron (the stigmata contain an orange dye used for food products), larkspur (a bright yellow dye is obtained from the petals), woad (the sap of the fresh leaves contains indigo), woadwaxen (the flowers and leaves contain a yellow dye used in the carpet industry), milkweed (the extract from the stems and inflorescences is a khaki-colored dye), madder (the roots contain a red dye—alizarin—used in carpet-making), marigold (the flowers have a yellow dye used for coloring fats, such as margarine), safflower (the red dye carthamine is found in the flowers), henna (the roots contain the orange dye henna), and a number of species of lichen (litmus).

REFERENCES

Mayer, F. Estestvennye organicheskie krasiashchie veshchestva. Moscow, 1940. (Translated from German.)
Pavlov, N. V. Dikie poleznye i tekhnicheskie rasteniia SSSR. Moscow, 1942.
Fedorov, A. A., and B. la. Rozen. KrasiPnye rasteniia SSSR. In Rastitel’noe syr’e SSSR, vol. 1. Moscow-Leningrad, 1950.

V. N. VEKHOV

References in periodicals archive ?
In a quart pot add: 2 cups fresh (or 1 cup dried or 1/4 cup ground) dye plants Cover with lukewarm water Add two tablespoons white vinegar
DiFranza said despite the challenge the weather presented this summer to growing a successful garden, the Quabbin soil enriched with the "black gold" of compost and fish emulsion produced sugar snap peas, baby carrots, dill, parsley, cucumbers, green peppers, cherry tomatoes, lettuce, carrots and shallots as well as dye plants.
Contract Awarded for Plant Urt Gel Project, Yttria and Tib Plant By Dye Plants Urt Gel Project, Toh Gel Project, Good App and Org Gb Common and Ctrl Projects, Cycle Purpose Tr Land Kor (Ecatak), Pasture and Forage Crops Urt Gel Project, Turkey En Gel Havz Urt Project.
Workshop 3: Growing Fibers and Dye Plants in the School Garden
Eat in the lovely gardens and see the dye plants historically used to colour wool while discovering the importance of the town's cloth industry (adults PS5.
He noted turmeric, safflower, the kusum flower, polas (fivndosa mushroom) and lobbongo (clove) among the local dye plants.
Future of the dye plants which are among the non-food products used as the source of the natural dyes is promising.
I especially like these stories and the botanical heritage plants, how people have been using them for centuries Au not only for food, but the dye plants, the fibre plants, the medicinal plants,Ao she said.
I show the many medicinal, culinary and dye plants, explaining their histories and colourful stories.
Mrs Dare has recreated Mill Dene's herb garden, which boasts many scratch-and -sniff favourites and includes culinary, medicinal and dye plants.
A colourless substance called indican is found in the dye plants, when the plant leaves are soaked in water the indican goes through a process of hydrolysis and is converted to a glucoside called indoxyl.
For more information on dye plants, two great books on the subject