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Until the introduction of Indigofera species from the south, Persicaria tinctoria (dyer's knotweed) was the most important blue dyestuff in East Asia; however, the crop produced less dyestuff than the average crop of indigo, and was quickly surpassed in favour of the more economical Indigofera tinctoria plant.
Indigofera tinctoria [2], also called true indigo, is a species of plant from the bean family that was one of the original sources of indigo dye. Description.
Traditional natural dyeing (Korean blue – Persicaria tinctoria) Blue colorants around the world were derived from indigo dye-bearing plants, primarily those in the genus Indigofera, which are native to the tropics. The primary commercial indigo species in Asia was true indigo (Indigofera tinctoria).
Indospicine is an amino acid not found in proteins, which occurs in Indigofera species. The chemical resembles arginine. It is toxic to mammals and causes liver damage and abortion. Dogs are particularly sensitive to the toxic effect and can sicken or die after eating a grazing animal that has eaten Indigofera. [1] [2]
After the FDA has banned red dye No.3, you may be wondering which drinks and candies contain it. Here's the full list—plus, when it'll be removed from shelves.
Indigofera tinctoria Recently, the various harmful effects and concerns for the environment (synthetic powders caused temporary wastewater pollution, too) generated awareness and encouraged people to celebrate an eco-friendly Holi.
Microplastics were detected in almost every seafood sample found off the coast of the western U.S. in a recent study. The particles were found in the edible tissue of six different species of fish.
Marine-life experts say the toxic runoff can have both acute, immediate impacts on the fish and other aquatic life living in the bay, along with long-term impacts like widespread die-offs.