Reseda luteola

Gelb-ingwer, m. turmeric, -kali, n. potassium ferrocyanide. -kraut, n. yellowweed, dyer s rocket (Reseda luteola). 

Wau, m. weld, dyer s weed Reseda luteola). -gelb, n. luteolin. 

Silk dyed with Reseda luteola, Sophora japonica and Allium cepa Rutin, quercetin, kaempferol, kaempferol 3,7 diglucoside, quercetin 4 glucoside, luteolin HCI/Me0H/H20, HCOOH/MeOH, H2EDTA/ACN/MeOH A H20 B ACN C H20 with HCOOH 350, 450, 490 nm/ ESI( ) Column C4 6... 

The optimized RPLC UV-Vis ESI MS method for all typical blue colourants (indi-goids, hematein, tannins, anthocyanins and selected flavonoids) was used for the identification of dyes extracted from a thread taken from an Italian tapestry of unknown origin from the collection of the National Museum in Warsaw (Poland). It was found that to obtain the red-blue colour of the fibre a mixture of dyestuffs was probably used. The presence of indigotin, tannic and ellagic acid (at m/z 301, NI), as well as carminic acid, suggested the use of indigo and cochineal. Reseda luteola could also have been used due to the presence of luteolin and apigenin. 

D. Cristea, I. Bareau and G.Vilarem, Identification and quantitative HPLC analysis of the main flavonoids present in weld (Reseda luteola L.), Dyes and Pigments, 57, 267 272 (2003). 

RP-HPLC found application in the separation and identification of the main flavonoids in weld (.Reseda luteola L.). The aerial parts of the weld were dried, ground and extracted with various solvents and solvent mixtures such as methanol, ethanol, water, methanol-water... 

Six samples were tested and gave one positive, previously known result, Reseda luteola (1/2), and three negatives Oligomeris ore-geana, 0. linifolia, and Reseda lulea. 

Figure 5. TLC of hydroxyflavone dyes. I, dyers rocket (Reseda luteola L., C.L Natural Yellow 2) 2, young fustic (Cotinus coggygria SCOP., C.I. Natural Brown 1) 3, buckthorn berries (Rhamnus cathartica L., fructi immaturi, C.I. Natural Yellow 13) 4, old fustic (Chlorophora tinctoria GAUD., C.I. Natural Yellow 1 5, osage orange wood (Maclura pomifera, C.L Natural Yellow 8) and 6, bastard hemp (Datisca cannabina L., C.L...

Luteolin is the colouring-matter of weld, the leaves and skin of Reseda luteola. Luteolin crystallises from alcohol in small yellow... 

Luteolln (3, 4, 5,7-tetrahydroxyflavone C. I. 75590, natural yellow 2). Formula see flavones. CisHioO, Mr 286.23, fine yellow crystals with silk-like luster, mp. 329 °C (decomp.), poorly soluble in water, soluble in alkalis to give deep yellow solutions. The bitter-tasting L. has anticonvulsant activity. L. occurs in leaves, flowers, and stems of dyer s weld Reseda luteola), in the flowers of the yellow foxglove (Digitalis lutea thus also the name digitoflavone for L.), and in other... 

Chemically related to brazUin are the yellow mordant dyes, luteolin and morin. Both are flavone derivatives whereas the former is obtained from yellow weed or weld (Reseda luteola L.), which grows widely across Europe, the latter comes from dyer s mulberry (Madura tinctoria, syn. Morus tinctorius L.). Alum- and tin-based mordants from luteolin produce a beautiful true yellow on all textile materials. Apart from weld, saffron (Crocus sativus L.) used to be the most important yellow colourant. The ancient Greeks and Romans used the dried stigmas from this species of crocus to obtain crocin, which was absorbed onto textiles with an alum mordant. Like saffron, curcuma (also known as turmeric) serves as a colourant for foodstuffs (e.g. for mustard and curry), and as a somewhat acrid spice in Oriental and South-east Asian cuisine. Curcuma is obtained from the root nodules of, for instance. Curcuma longa L., which is cultivated in plantations in China and the East Indies. 

Lutfullin KL, Tadzhibaev MM, AbduUaev UA, Malikov VM, Yunusov SYu (1976) Alkaloids of Reseda luteola. Chem Nat Compd 12(5) 559-563... 

Lutfullin KL, Tadzhibaev MM, Malikov VM, Abdullaev UA, Rakhmankulov U (1977) Dynamics of the accumulation of the alkaloids of Reseda luteola structure of lutine and lutinine. Chem Nat Compd 13(6) 696-699... 

Constit. of Reseda luteola and Barbarea vulgaris (winter cress). 

Flavone dye extracted from the seeds, stems, and leaves of Reseda luteola L (Dyer s Rocket)... 

A flavone dyestuff, 4, 5,7-trihydroxyflavone, extracted from Reseda luteola L. and Petroselenium crispum (Miller) A.W. HUl. (Schweppe, 1992). 

Weld (yellow) Flavone, C15H10O2 2-phenylchromone From antiquity Extracted from parts of Reseda luteola... 

The most important yellow dye in ancient and medieval times was weld, a flavone derivative extracted from the seeds, stems, and leaves of Reseda luteola, commonly known as dyer s rocket. Weld is resistant to atmospheric oxidation, rendering it quite lightfast and hence extremely popular and useful. In combination with the blue dye woad it was used to produce the Lincoln green made famous by Robin Hood and his merry men. Quercitron, a flavonol derivative, is much more susceptible to degradation by light and hence was not as important [23]. 

Luteolin, bright yellow, from Reseda luteola, Dyer s Rocket, yellow weed, weld... 

Numerous Me and methylene ethers have separate entries. Occurs in many plants in Leguminosae, Resedaceae, Euphorbiaceae, Umbelliferae, Scrophulariaceae, Fabaceae, Asteraceae, Cistaceae, Passifloraceae, Yerbenaceae and Hepaticae. First isol. in 1832 from Reseda luteola. Shows virucidal activity. Used in EtOH soln. for colour reactions with Al, Be, Cd, Cu, Zr, B. Yellow needles. Mp 328-330° (325°). 

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