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Carmine lake

Cochineal pigments are extracted from dried bodies of female insects with water or with ethanol the result is a red solution that is concentrated in order to obtain the 2 to 5% carminic acid concentration customary for commercial cochineal. For carmine lakes, the minimum content of carminic acid is 50%. An industrial procedure applied in Spain uses ammonium hydroxide as the extracting agent and phosphoric acid as the acidifying agent. For analytical purposes the extraction is carried out with 2 N HCl at 100°C. The chemical synthesis of carminic acid has also been reported and is the subject of European and United States patents. ... [Pg.335]

Carmine is achieved by the complexing of cochineal extract with calcimn and aluminium. It can be standardised with maltodextrin or lactose and sold as carmine lake products of different concentrations and different shades of pink through red and violet to blue. Carmine is insoluble in water and acids, but soluble in alkali. By dissolving carmine lake in aqueous potassium, sodium and ammonium hydroxide, water-soluble powders and solutions can be made. Carmine has high colour intensity and is therefore more cost-effective than cochineal extract. [Pg.335]

Chem. Descrip. Hydrated aluminum chelate of carminic acid, carmine lake-red powd. [Pg.169]

Carmine lake n. Natural Red 4 (75470). Barium lake of the dyestuff produced by coupling 7-amino-1 -naphthalenesulfonic acid with R-sale (2-naphthol-3 6-disulfonic acid). [Pg.161]

Carminic add is a water-soluble and stable substance. The shade of colour in solution depends on pH and is orange at pH 3, red at pH 5.5 and purple at pH 7. The colour intensity is relatively low, therefore carminic add is used mainly as the red aluminium salt called carmine lake or crimson lake (containing about 50% of carminic acid), which is prepared from powdered insect bodies hydrolysed in diluted ammonia (or sodium carbonate) and by addition of alum. It is used as an intense red pigment for colouring some aperitifs (vermouths), meat products, specialty bakery and confectionery products, jams and dairy products. [Pg.724]

As a gently roasted form of carmine lake q.vl), this could therefore be a modified version of various lakes such as those based on cochineal, kermes or madder as well as the synthetic alizarin. Salter (1869) is more specific though, reporting it to be the carmine of cochineal partially charred till it resembles in colour the purple of gold... It is a magnificent reddish purple of... [Pg.65]

Alizarin Cochineal Kermes Madder Carmine lake Heaton (1928) 380 Osborn (1845) 21 Salter(1869) 298... [Pg.65]

Carlyle (2001) also notes a number of terminological forms listed by English colourmen for cochineal lakes such as carmine, crimson lake, crimson lake extra, extra carmine lake, and crimson lake extra fine. Further, combinations of vermilion (q.v.) and carmine were given names such as carmine vermilion and Florentine and Chinese lake. [Pg.86]

Brazilwood Carmine lake Cochineal Kermes Madder Rhamnus Saffron Colour Index ( 91 ) 19140 Field (1835) 97 Herbst Hunger (1997) OED (2002) Lake Watin (1773/edition of 1785) 24... [Pg.215]

Carmine [1390-65-4] is the aluminum or calcium-aluminum lake on an aluminum hydroxide substrate of the coloring principle (again, chiefly carminic acid) obtained by the aqueous extraction of cochineal. Carmine is normally 50% or more carminic acid. [Pg.449]

Carmine [1390-65-4] is the trade name for the aluminum lake of the red anthraquinone dye carminic acid obtained from the cochineal bug. The dye is obtained from the powdery form of cochineal by extraction with hot water, the extracts treated with aluminum salts, and the dye precipitated from the solution by the addition of ethanol. This water-soluble bright red dye is used for coloring shrimp, pork sausages, pharmaceuticals, and cosmetics. It is the only animal-derived dye approved as a colorant for foods and other products. [Pg.404]

Carmines are dehned as the lakes of carminic acid with various metals. The most used is carmine, the aluminium lake of carminic acid. Carmine is not soluble in water or oils and is also very stable under condition of light, heat, oxidation, and sulfur dioxide." ... [Pg.335]

Madder lake, lac dye, cochineal Alizarin, purpurin, ruberythric acid, lucidin, laccaic acid A, carminic acid hci/h2o, n amyl alcohol, MeOH H20/MeOH with AcOH 250, 280 nm/ ESI( ) HPLC optimization... [Pg.371]

P.R.58 4 is primarily used in general industrial paints, where its full shade and related shades are of interest. This is also true for other manganese pigment lakes. In full shade, P.R.58 4 affords deep carmine shades, but white reductions provide only very dull, bluish shades of red. The pigment is fast to organic solvents and... [Pg.333]

P.R.151, a barium lake, being produced in Japan, affords a bluish red color, which may be referred to as carmine. Of medium tinctorial strength, the pigment is used primarily in plastics. [Pg.336]

The structure of kermisic acid is l,3,4,5-tetrahydroxy-7-carboxy-8-mcrhylanthraquinone. Carminic acid (Cl Natural Red 4 Cl 75470). is a red dye occurring as a glycoside in the body of the cochineal insect Dactylopius coccus of the order Homoptera. family Coecidae, Until the advent of synthetic dyes, the principal use for carminic acid was for dyeing tin-mordanted wool or silk. Its aluminum lake, carmine, finds use in Lhe coloring of foods. The structural formula of carminic acid is (2). [Pg.529]

Pyrrole is a colorless liquid, boiling point 131°C, insoluble in water, soluble in alcohol or ether. Pyrrole dissolves slowly in dilute acids, being itself a very weak base rcsiniflcation lakes place readily, especially with more concentrated solutions of acids and on warming with acid a red precipitate is formed. Pyrrole vapor produces a pale red coloration on pine wood moistened with hydrochloric acid, which color rapidly changes to intense carmine red. Pyrrole may be made (1) by reaction of succmimide... [Pg.1390]

Carmine occurs as bright red, friable pieces or as a dark red powder. It is the aluminum or the calcium-aluminum lake, on an aluminum hydroxide substrate, of the coloring principles obtained by an aqueous extraction of cochineal. Cochineal consists of the dried female insects Dactylopius coccus costa (Coccus cacti L.), enclosing young larvae the coloring principles thus derived consist mainly of carminic acid (C22H20O13). It is soluble in alkali solutions, slightly soluble in hot water, and practically insoluble in cold water and in dilute acids. [Pg.98]

Carmine E120 75470 Carmine 40, Cochineal lake, Carminic acid lake... [Pg.661]

Carminic acid is prepared by precipitating an aqueous decoction of cochineal with lead acetate, and decomposing the lead lake with a quantity of sulphuric acid insufficient for the whole. The solution of carminic acid thus obtained is evaporated to dryness at a low temperature, and the residue crystallised from absolute alcohol. [Pg.265]

Carmine-red is prepared from the lake obtained by precipitating a cochineal decoction with lead acetate. This lead lake is dissolved in dilute sulphuric acid, freed from lead by sulphuretted hydrogen, and boiled with very dilute sulphuric acid for some hours. Barium carbonate is added till a violet coloration ensues, and then filtered rapidly and precipitated with lead acetate. The lead lake is decomposed and the filtrate evaporated to dryness in vacuo. [Pg.266]


See other pages where Carmine lake is mentioned: [Pg.238]    [Pg.595]    [Pg.304]    [Pg.335]    [Pg.643]    [Pg.178]    [Pg.479]    [Pg.86]    [Pg.238]    [Pg.595]    [Pg.304]    [Pg.335]    [Pg.643]    [Pg.178]    [Pg.479]    [Pg.86]    [Pg.84]    [Pg.450]    [Pg.396]    [Pg.350]    [Pg.106]    [Pg.590]    [Pg.594]    [Pg.595]    [Pg.596]    [Pg.194]    [Pg.149]    [Pg.109]    [Pg.110]    [Pg.364]    [Pg.531]    [Pg.422]    [Pg.430]    [Pg.293]   
See also in sourсe #XX -- [ Pg.178 ]




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