Food coloring

Short description: Substance used to color food or drink

A variety of food colorings, added to beakers of water

Food coloring, color additive or colorant is any dye, pigment, or substance that imparts color when it is added to food or beverages. Colorants can be supplied as liquids, powders, gels, or pastes. Food coloring is commonly used in commercial products and in domestic cooking.

Food colorants are also used in various non-food applications, including cosmetics, pharmaceuticals, home craft projects, and medical devices.[1] Some colorings may be natural, such as with carotenoids and anthocyanins extracted from plants or cochineal from insects, or may be synthesized, such as tartrazine yellow.

In the manufacturing of foods, beverages and cosmetics, the safety of colorants is under constant scientific review and certification by national regulatory agencies, such as the European Food Safety Authority (EFSA) and US Food and Drug Administration (FDA), and by international reviewers, such as the Joint FAO/WHO Expert Committee on Food Additives.

## Contents

* 1 Purpose of food coloring
* 2 Natural food dyes
* 2.1 History
* 2.2 Natural colorants
* 2.3 Chemical structures of representative natural colorants
* 3 Artificial food colorants
* 3.1 History
* 3.2 Chemical structures of representative artificial colorants
* 4 Regulation
* 4.1 History: 19th and 20th centuries
* 4.2 Status as of 2024
* 4.3 Global market
* 4.4 National regulations
* 4.4.1 Canada
* 4.4.2 European Union
* 4.4.3 India
* 4.4.4 United States
* 4.5 Global harmonization
* 4.6 Safety evaluation
* 4.7 Titanium dioxide
* 5 See also
* 6 Notes
* 7 References

## Purpose of food coloring

Blue Curaçao liqueur gets its trademark blue color from food coloring.[2]

People associate certain colors with certain flavors, and the color of food can influence the perceived flavor in anything from candy to wine.[3] Sometimes, the aim is to simulate a color that is perceived by the consumer as natural, such as adding red coloring to glacé cherries (which would otherwise be beige), but sometimes it is for effect, like the green ketchup that Heinz launched in 2000. Color additives are used in foods for many reasons including:[4][5]

* Making food more attractive, appealing, or appetizing
* Offsetting color loss over time due to exposure to light, air, temperature extremes, moisture, or storage conditions
* Stabilizing natural variations in color
* Enhancing colors that occur naturally
* Providing color to colorless or "fun" foods
* Allowing products to be identified via sight, such as candy flavors or medicine dosages

## Natural food dyes

### History

The addition of colorants to foods is thought to have occurred in Egyptian cities as early as 1500 BC, when candy makers added natural extracts and wine to improve the products' appearance.[6] During the Middle Ages, the economy in the European countries was based on agriculture, and the peasants were accustomed to producing their own food locally or trading within the village communities. Under feudalism, aesthetic aspects were not considered, at least not by the vast majority of the generally very poor population.[7] This situation changed with urbanization at the beginning of the Modern Age, when trade emerged—especially the import of precious spices and colors. One of the first food laws, created in Augsburg, Germany, in 1531, concerned spices or colorants and required saffron counterfeiters to be burned to death.[8]

The orange color of carrots and many other fruits and vegetables arises from carotenoids.

### Natural colorants

Carotenoids (E160, E161, E164), chlorophyllin (E140, E141), anthocyanins (E163), and betanin (E162) comprise four main categories of plant pigments grown to color food products.[9] Other colorants or specialized derivatives of these core groups include:

* Annatto (E160b), a reddish-orange dye made from the seed of the achiote
* Caramel coloring (E150a-d), made from caramelized sugar
* Carmine (E120), a red dye derived from the cochineal insect, Dactylopius coccus
* Elderberry juice (E163)
* Lycopene (E160d)
* Paprika (E160c)
* Turmeric/curcumin (E100)
* Calcium phosphate,[10] a white mineral [1]
* Galdieria extract,[10] a blue color derived from algae [2]
* Butterfly pea flower extract,[10] a blue color made from dried flower petals [3]

Natural blue colorants are rare.[11] The pigment genipin, present in the fruit of Gardenia jasminoides, can be treated with amino acids to produce the blue pigment gardenia blue, which is approved for use in Japan and the US,[12] but not the EU.[13]

To ensure reproducibility, the colored components of these substances are often provided in highly purified form. For stability and convenience, they can be formulated in suitable carrier materials (solid and liquids). Hexane, acetone, and other solvents break down cell walls in the fruit and vegetables and allow for maximum extraction of the coloring. Traces of these may still remain in the finished colorant, but they do not need to be declared on the product label. These solvents are known as carry-over ingredients.

### Chemical structures of representative natural colorants

* Food colorants, natural
* Betanin, a magenta dye, mainly produced from beets

* Anthocyanin, a red to blue dye depending on functional groups and pH

* Beta-carotene, a yellow to orange colorant

## Artificial food colorants

### History

With the onset of the industrial revolution, people became dependent on foods produced by others.[7] Populations living in large cities required consistent, low cost food options and, at that time, few regulations were in place to control and monitor the food supply. The analytical methods needed to detect and identify artificially colored foods did not yet exist, therefore, the adulteration of foods flourished.[7] Heavy metal and other inorganic element-containing compounds turned out to be cheap and suitable to "restore" the color of watered-down milk and other foodstuffs, some more lurid examples being:[14]

* Red lead (Pb3O4) and vermillion (HgS) were routinely used to color cheese and confectionery.
* Copper arsenite (CuHAsO3) was used to recolor used tea leaves for resale. It also caused two deaths when used to color a dessert in 1860.

Sellers at the time offered more than 80 artificial coloring agents, some invented for dyeing textiles, not foods.[14]

> Thus, with potted meat, fish and sauces taken at breakfast he would consume more or less Armenian bole, red lead, or even bisulphuret of mercury [vermillion, HgS]. At dinner with his curry or cayenne he would run the chance of a second dose of lead or mercury; with pickles, bottled fruit and vegetables he would be nearly sure to have copper administrated to him; and while he partook of bon-bons at dessert, there was no telling of the number of poisonous pigments he might consume. Again his tea if mixed or green, he would certainly not escape without the administration of a little Prussian blue...[15]

Many color additives had never been tested for toxicity or other adverse effects. Historical records show that injuries, even deaths, resulted from tainted colorants. In 1851, about 200 people were poisoned in England, 17 of them fatally, directly as a result of eating adulterated lozenges.[7] In 1856, mauveine, the first synthetic color, was developed by Sir William Henry Perkin and by the turn of the century, unmonitored color additives had spread through Europe and the United States in all sorts of popular foods, including ketchup, mustard, jellies, and wine.[16][17] Originally, these were dubbed 'coal-tar' colors because the starting materials were obtained from bituminous coal.[18][5]

Compared to natural dyes, synthetic dyes are often less costly because they are intense, requiring very small concentrations.[14][19][20]

### Chemical structures of representative artificial colorants

* Food colorants, synthetic
* Indigo carmine, blue

* Allura Red AC, red

* Quinoline Yellow WS, yellow

## Regulation

### History: 19th and 20th centuries

Concerns over food safety led to numerous regulations throughout the world. German food regulations released in 1882 stipulated the exclusion of dangerous "minerals" such as arsenic, copper, chromium, lead, mercury, and zinc, which were frequently used as ingredients in colorants.[21] In contrast to today's regulatory guidelines, these first laws followed the principle of a negative listing (substances not allowed for use); they were already driven by the main principles of today's food regulations all over the world, since all of these regulations follow the same goal: the protection of consumers from toxic substances and from fraud.[7] In the United States, the Pure Food and Drug Act of 1906 reduced the permitted list of synthetic colors from 700 down to seven.[22] The seven dyes initially approved were Ponceau 3R (FD&C Red No. 1), amaranth (FD&C Red No. 2), erythrosine (FD&C Red No. 3), indigotine (FD&C Blue No. 2), light green SF (FD&C Green No. 2), naphthol yellow 1 (FD&C Yellow No. 1), and orange 1 (FD&C Orange No. 1).[23] Even with updated food laws, adulteration continued for many years.

In the 20th century, improved chemical analysis and testing led to the replacement of the negative lists by positive listings. Positive lists consist of substances allowed to be used for the production and the improvement of foods. Most prevailing legislations are based on positive listing.[7] Positive listing implies that substances meant for human consumption have been tested for their safety, and that they have to meet specified purity criteria prior to their approval by the corresponding authorities. In 1962, the first EU directive (62/2645/EEC) approved 36 colorants, of which 20 were naturally derived and 16 were synthetic.[24] This directive did not list which food products the colorants could or could not be used in. At that time, each member state could designate where certain colors could and could not be used. In Germany, for example, quinoline yellow was allowed in puddings and desserts, but tartrazine was not. The reverse was true in France.[8] This was updated in 1989 with 89/107/EEC, which concerned food additives authorized for use in foodstuffs.[25][26]

### Status as of 2024

Naturally derived colors, most of which have been used traditionally for centuries, are exempt from certification by several regulatory bodies throughout the world, such as the FDA.[27] Included in the exempt category are colors or pigments from vegetables, minerals, or animals, such as annatto extract (yellow), beets (purple), beta-carotene (yellow to orange), and grape skin extract (purple).[27]

Synthetic food colorings are typically less expensive to manufacture, but require closer scientific scrutiny for safety and are certified for use in food manufacturing in the United States,[27] United Kingdom,[28] and European Union.[29]

### Global market

The global market for food coloring is anticipated to grow from $4.6 billion in 2023 to $6 billion by 2028. This expansion is primarily driven by increasing consumer demand for visually appealing food products. Home chefs, particularly those active on social media, are seeking vibrant colors to enhance the aesthetic appeal of their homemade snacks and treats. Additionally, large food brands incorporate vivid colors into their products to stand out in a competitive market.[30]

While the demand for food coloring is rising, there are growing concerns about its potential health implications. Some localities, such as California, have implemented regulations restricting certain artificial dyes due to concerns about their impact on children's behavior.[30]

### National regulations

#### Canada

Canada has published food and drug regulations covering food colorants.[31]

Food in Canada cannot be sold with more than:[31]: section B.06.002, p.217

* 100 ppm of fast green FCF or brilliant blue FCF. or any combination
* 300 ppm of allura red, amaranth, erythrosine, indigotine, sunset yellow FCF or tartrazine and Fast Green FCF or brilliant blue FCF combined
* 150 ppm of ponceau SX dye.

#### European Union

File:M&Ms Belgium.jpgDue to European Union regulations on food coloring, European M&M's have darker colors than American M&M's.

In the European Union, E numbers are used for all additives, both synthetic and natural, that are approved in food applications. E numbers beginning with 1, such as E100 (turmeric) or E161b (lutein), are allocated to colorants.[32] The safety of food colors and other food additives in the EU is evaluated by the European Food Safety Authority (EFSA). Color Directive 94/36/EC, enacted by the European Commission in 1994, outlines permitted natural and artificial colors with their approved applications and limits in different foods.[8][33] This is binding on all member countries of the EU; any changes have to be implemented into national laws by a specified deadline. In non-EU member states, food additives are regulated by national authorities, which usually, but not always, try to harmonize with EU regulations. Most other countries have their own regulations and list of food colors which can be used in various applications, including maximum daily intake limits.

Permitted synthetic colorants in the EU include E numbers 102–143 which cover the range of artificial colors. The EU maintains a list of allowed additives.[34] Some artificial dyes approved for food use in the EU include:

* E104: Quinoline Yellow WS
* E122: Carmoisine
* E124: Ponceau 4R
* E131: Patent Blue V
* E142: Green S

The three synthetic colors Orange B, Citrus Red No. 2 and FD&C Green No. 3 are not permitted in the EU, nor is toasted partially-defatted cooked cottonseed flour.[35]

#### India

The Food Safety and Standard Act, 2011 in India generally permits eight artificial colorings in food:[36][37]

SL No. | Color | Common name | INS No. | Color Index | Chemical class

|
|
|
|
|

1 | Red | Ponceau 4R | 124 | 16255 | Azo
|  | Carmoisine | 122 | 14720 | Azo
|  | Erythrosine | 127 | 45430 | Xanthene
2 | Yellow | Tartrazine | 102 | 19140 | Pyrazolone
|  | Sunset yellow FCF | 110 | 15985 | Azo
3 | Blue | Indigo carmine | 132 | 73015 | Indigoid
|  | Brilliant blue FCF | 133 | 42090 | Triarylmethane
4 | Green | Fast green FCF | 143 | 42053 | Triarylmethane

#### United States

The addition of food coloring, such as beta-carotene, gives naturally white margarine a yellow, butter-like color.[38][39]

The FDA permitted colors are classified as subject to certification or exempt from certification in Code of Federal Regulations – Title 21 Part 73 & 74,[40] both of which are subject to rigorous safety standards prior to their approval and listing for use in foods.[27][5]

In the United States, FD&C numbers (which indicate that the FDA has approved the colorant for use in foods, drugs and cosmetics) are given to approved synthetic food dyes that do not exist in nature.

Currently permitted synthetic colorants include the following seven artificial colorings (the most common in bold).[41] The lakes of these colorings are also permitted except the lake of Red No. 3.[42] The United States Secretary of Health and Human Services is looking to phase out all of these by 2026 (2027 for Red No. 3), and the Food and Drug Administration is planning on authorizing four new colorings before then.[43]

* FD&C Blue No. 1 – Brilliant blue FCF, E133 (blue shade)
* FD&C Blue No. 2 – Indigotine, E132 (indigo shade)
* FD&C Green No. 3 – Fast green FCF, E143 (turquoise shade)
* FD&C Red No. 3 – Erythrosine, E127 (pink shade, commonly used in glacé cherries)[44]
* FD&C Red No. 40 – Allura red AC, E129 (red shade)
* FD&C Yellow No. 5 – Tartrazine, E102 (yellow shade)
* FD&C Yellow No. 6 – Sunset yellow FCF, E110 (orange shade)

Two dyes are allowed by the FDA for limited applications:

* Citrus red 2 (orange shade) – allowed only to color orange peels.
* Orange B (red shade) – allowed only for use in hot dog and sausage casings (not produced after 1978, but not delisted)

Many dyes have been delisted for a variety of reasons, ranging from poor coloring properties to regulatory restrictions.[45] Some of these delisted food colorants are:

* FD&C Red No. 2 – Amaranth, E123
* FD&C Red No. 4 – Scarlet GN, E125[46][47]
* FD&C Red No. 32 was used to color Florida oranges.[45][46][48]
* FD&C Orange Number 1 was one of the first water-soluble dyes to be commercialized, and one of seven original food dyes allowed under the Pure Food and Drug Act of June 30, 1906.[45][46]
* FD&C Orange No. 2 was used to color Florida oranges.[45]
* FD&C Yellow No. 1, 2, 3, and 4[46]
* FD&C Violet No. 1[46]

### Global harmonization

Since the beginning of the 1960s, the Joint FAO/WHO Expert Committee on Food Additives has promoted the development of international standards for food additives, not only by its toxicological assessments, which are continuously published by the World Health Organization in a "Technical Report Series",[49] but furthermore by elaborating appropriate purity criteria, which are laid down in the two volumes of the "Compendium of Food Additive Specifications" and their supplements.[50] These specifications are not legally binding but very often serve as a guiding principle, especially in countries where no scientific expert committees have been established.[7]

Food coloring bans from 1950-2026. By December 31, 2027, all food coloring will be banned.Food coloring bans from 1950-2026. By December 31, 2027, all food coloring will be banned.

To further regulate the use of these evaluated additives, in 1962 the WHO and FAO created an international commission, the Codex Alimentarius, which is composed of authorities, food industry associations and consumer groups from all over the world. Within the Codex organization, the Codex Committee for Food Additives and Contaminants is responsible for working out recommendations for the application of food additives: the General Standard for Food Additives.[51] In the light of the World Trade Organizations General Agreement on Tariffs and Trade (GATT), the Codex Standard, although not legally binding, influences food color regulations all over the world.[7]

### Safety evaluation

A 2023 update by the FDA on food colorants required safety assurances by manufacturers and restrictions on the types of foods in which colorants are used, their maximum amounts and labeling, batch certification, and the amount needed to attain the desired food coloring.[27] Scientific consensus regards that food color additives are safe under the restrictions for use, and that most children have no adverse effects when consuming foods with color ingredients; some individual studies, however, indicate that certain children may have allergic sensitivities to colorants.[52] In October 2023, the state of California banned the colorant, Red 3, in food products starting in 2027.[53] Specific federal guidance on color additives is under the FD&C Act, with Redbook 2000 outlining required safety assessments.

In the 20th century, widespread public belief that artificial food coloring causes ADHD-like hyperactivity in children originated from Benjamin Feingold, a pediatric allergist from California, who proposed in 1973 that salicylates, artificial colors, and artificial flavors cause hyperactivity in children.[54] However, there is no clinical evidence to support broad claims that food coloring causes food intolerance and ADHD-like behavior in children.[55]: 452 [56] It is possible that certain food colorings may act as a trigger in those who are genetically predisposed.[57][58]

Concerns were expressed again in 2011 that food colorings may cause ADHD-like behavior in children;[57] a 2015 literature review found the evidence inconclusive.[59] The UK Food Standards Agency examined the effects of tartrazine, allura red, ponceau 4R, quinoline yellow, sunset yellow and carmoisine on children. These colorants are found in beverages.[57][60] The study found "a possible link between the consumption of these artificial colours and a sodium benzoate preservative and increased hyperactivity" in the children;[57][60] the advisory committee to the FSA that evaluated the study also determined that because of study limitations, the results could not be extrapolated to the general population, and further testing was recommended.[61][57] After continuous review as of 2024, the FSA stated that the above artificial food colors may induce hyperactivity in some children.[28] Food and drink products containing any of the six designated colors must warn consumers on the package labels, stating May have an adverse effect on activity and attention in children.[28]

The European regulatory community, with an emphasis on the precautionary principle, required labeling and temporarily reduced the acceptable daily intake for the food colorings; the UK FSA called for voluntary withdrawal of the colorings by food manufacturers.[57][60] However, in 2009, the European Food Safety Authority re-evaluated the data at hand and determined that "the available scientific evidence does not substantiate a link between the color additives and behavioral effects" for any of the dyes.[62][63][64]

### Titanium dioxide

In 2016, EFSA updated its safety assessment of titanium dioxide (E 171), concluding that it can no longer be considered safe as a food additive.[65] As of 2024, the FDA was evaluating a petition to exclude titanium dioxide from use in foods, beverages or cosmetics in the United States.[66]

## See also

* Azo compound
* Acid dye
* E number
* Federal Food, Drug, and Cosmetic Act
* Food additive

## Notes

## References

1. ↑ CFR Title 21 Part 70: Color Additive Regulations, US Food and Drug Administration, March 22, 1977, http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr;sid=df0d2cc786cc4d2efd1ebf642c9a79fa;rgn=div5;view=text;node=21:1.0.1.1.24;idno=21;cc=ecfr#21:1.0.1.1.24.1.31.1, retrieved February 15, 2012
2. ↑ "Webpage about Curacao Liqueur and Triple secs". http://www.kiraso.cz/en/Curacao_liqueur.
3. ↑ Jeannine Delwiche (2003). "The impact of perceptual interactions on perceived flavor". Food Quality and Preference 14 (2): 137–146. doi:10.1016/S0950-3293(03)00041-7. http://www-fst.ag.ohio-state.edu/Pubs/2004/delwiche-fqap1.pdf.
4. ↑ "Food Ingredients & Colors". International Food Information Council. June 29, 2010. http://www.foodinsight.org/Resources/Detail.aspx?topic=Food_Ingredients_Colors.
5. ↑ 5.0 5.1 5.2 Barrows, Julie N.; Lipman, Arthur L.; Bailey, Catherine J. (17 Dec 2009). "Color Additives: FDA's Regulatory Process and Historical Perspectives". FDA (Reprinted from Food Safety Magazine October/November 2003 issue). https://www.fda.gov/ForIndustry/ColorAdditives/RegulatoryProcessHistoricalPerspectives/default.htm. "Although certifiable color additives have been called coal-tar colors because of their traditional origins, today they are synthesized mainly from raw materials obtained from petroleum."
6. ↑ Meggos, H. (1995). "Food colours: an international perspective". The Manufacturing Confectioner. pp. 59–65.
7. ↑ 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 Arlt, Ulrike (29 Apr 2011). "The Legislation of Food Colours in Europe". The Natural Food Colours Association. http://www.natcol.org/node/19.
8. ↑ 8.0 8.1 8.2 Cook, Jim. "Colorants Compliance". The World of Food Ingredients (Sept 2013): 41–43. ISSN 1566-6611.
9. ↑ Rodriguez-Amaya, Delia B (2016). "Natural food pigments and colorants". Current Opinion in Food Science 7: 20–26. doi:10.1016/j.cofs.2015.08.004.
10. ↑ 10.0 10.1 10.2 "FDA Approves Three Food Colors from Natural Sources" (in en). FDA. https://www.fda.gov/news-events/press-announcements/fda-approves-three-food-colors-natural-sources.
11. ↑ Newsome, A. G.; Culver, C. A.; van Breemen, R. B. (2014). "Nature's palette: the search for natural blue colorants". J Agric Food Chem 62 (28): 6498–6511. doi:10.1021/jf501419q. PMID 24930897. Bibcode: 2014JAFC...62.6498N.
12. ↑ "FDA Approves Gardenia (Genipin) Blue Color Additive While Encouraging Faster Phase-Out of FD&C Red No. 3" (in en). FDA. July 14, 2025. https://www.fda.gov/news-events/press-announcements/fda-approves-gardenia-genipin-blue-color-additive-while-encouraging-faster-phase-out-fdc-red-no-3.
13. ↑ Coultate, T.; Blackburn, R.S. (2018). "Food colorants: their past, present and future". Coloration Technology 134 (3): 165–186. doi:10.1111/cote.12334. http://eprints.whiterose.ac.uk/126336/3/Food colorants review final accepted version.pdf.
14. ↑ 14.0 14.1 14.2 Downham, Alison; Collins, Paul (2000). "Colouring our foods in the last and next millennium". International Journal of Food Science and Technology 35: 5–22. doi:10.1046/j.1365-2621.2000.00373.x. http://www.blacksci.co.uk/products/journals/freepdf/tmp1.pdf. Retrieved 18 Feb 2014.
15. ↑ Hassel, A.H. (1960). Amos, Arthur James. ed. Pure Food and Pure Food Legislation. London: Butterworths. p. 12. https://books.google.com/books?id=3KI1AQAAIAAJ.
16. ↑ Walford, J. (1980). "Historical Development of Food Colouration". Developments in Food Colours (London: Applied Science Publishers) 1: 1–25.
17. ↑ Sharma, Vinita; McKone, Harold T.; Markow, Peter G. (2011). "A Global Perspective on the History, Use, and Identification of Synthetic Food Dyes". Journal of Chemical Education 88 (1): 24–28. doi:10.1021/ed100545v. Bibcode: 2011JChEd..88...24S.
18. ↑ Hancock, Mary (1997). "Potential for Colourants from Plant Sources in England & Wales". UK Central Science Laboratory. http://ienica.csl.gov.uk/usefulreports/colourants.pdf. "The use of natural dyes in the UK and the rest of the Western economies has been replaced commercially by synthetic dyes, based mainly on aniline and using petroleum or coal tar as the raw stock."
19. ↑ Hunger, Klaus; Mischke, Peter; Rieper, Wolfgang; Raue, Roderich; Kunde, Klaus; Engel, Aloys (2005). "Ullmann's Encyclopedia of Industrial Chemistry". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a03_245.
20. ↑ König, J. (2015), "Food colour additives of synthetic origin", in Scotter, Michael J., Colour Additives for Foods and Beverages, Elsevier, pp. 35–60, doi:10.1016/B978-1-78242-011-8.00002-7, ISBN 978-1-78242-011-8
21. ↑ Hastings, Robert W. (January–March 1898). Hamilton, John B.. ed. "Human Food Laws". Journal of the American Medical Association 30 (1–13): 419–421. doi:10.1001/jama.1898.72440600019002e. https://books.google.com/books?id=ilIKAQAAMAAJ. Retrieved 17 Feb 2014.
22. ↑ Meadows, Michelle (2006). "A Century of Ensuring Safe Foods and Cosmetics". FDA Consumer Magazine (FDA) 40 (January–February): 6–13. PMID 16528821. https://www.fda.gov/AboutFDA/WhatWeDo/History/FOrgsHistory/CFSAN/ucm083863.htm. Retrieved 21 Feb 2014.
23. ↑ "Color Additives in Foods" (in en). FDA. 2023-07-06. https://www.fda.gov/food/color-additives-information-consumers/color-additives-foods.
24. ↑ "COUNCIL DIRECTIVE - on the approximation of the rules of the Member States concerning the colouring matters authorised for use in foodstuffs intended for human consumption". EEC. Archived from the original on March 16, 2014. https://web.archive.org/web/20140316190346/http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=DD:I:1959-1962:31962L2645:EN:PDF.
25. ↑ Council Directive 89/107/EEC of 21 December 1988 on the approximation of the laws of the Member States concerning food additives authorized for use in foodstuffs intended for human consumption OJ L 40, 11.2.1989, p. 27–33 (ES, DA, DE, EL, EN, FR, IT, NL, PT)
26. ↑ "89/107/EEC". http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:1989:040:0027:0033:EN:PDF.
27. ↑ 27.0 27.1 27.2 27.3 27.4 "Color Additives in Foods". US Food and Drug Administration. 6 July 2023. https://www.fda.gov/food/color-additives-information-consumers/color-additives-foods.
28. ↑ 28.0 28.1 28.2 "Food additives". Food Standards Agency, UK Government. 26 January 2024. https://www.food.gov.uk/safety-hygiene/food-additives.
29. ↑ "Food colours". European Food Safety Authority. 18 January 2024. https://www.efsa.europa.eu/en/topics/topic/food-colours.
30. ↑ 30.0 30.1 Flood, Elizabeth (2024-10-03). "Ingredients in Focus: Food colorings". https://www.fooddive.com/news/ingredients-focus-food-colorings/728828/.
31. ↑ 31.0 31.1 "Food and Drug Regulations (C.R.C., c. 870)". Consolidated federal laws of Canada. 15 February 2023. https://laws-lois.justice.gc.ca/PDF/C.R.C.,_c._870.pdf.
32. ↑ "Current EU approved additives and their E Numbers". Food Standards Agency. 26 Nov 2010. http://www.food.gov.uk/safereating/chemsafe/additivesbranch/enumberlist#h_2.
33. ↑ "Color Directive 94/36/EC". http://ec.europa.eu/food/fs/sfp/addit_flavor/flav08_en.pdf.
34. ↑ "Approved additives and E numbers". http://www.food.gov.uk/safereating/chemsafe/additivesbranch/enumberlist.
35. ↑ Lehto, Sari; Buchweitz, Maria; Klimm, Alexandra et al. (20 January 2017). "Comparison of food colour regulations in the EU and the US: a review of current provisions". Food Additives and Contaminants: Part A 34 (3): 335–355. doi:10.1080/19440049.2016.1274431. ISSN 1944-0049. PMID 28004607.
36. ↑ "Food Safety and Standard Regulations". 2026-05-01. https://fssai.gov.in/cms/food-safety-and-standards-regulations.php. "Food Safety and Standards (Food Products Standards and Food Additives) Regulation, 2011"
37. ↑ Food Safety and Standard Act, 2006,Rules 2011, Regulations 2011 (14th ed.). Delhi: International Law Book Company, India. 2015. p. 483.
38. ↑ Ian P. Freeman, "Margarines and Shortenings" Ullmann's Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH, Weinheim doi:10.1002/14356007.a16_145
39. ↑ "The Butter Wars: When Margarine Was Pink". The Plate: National Geographic. 13 August 2014. http://theplate.nationalgeographic.com/2014/08/13/the-butter-wars-when-margarine-was-pink/.
40. ↑ Code of Federal Regulations – Title 21 Part 73 & 74
41. ↑ "Types of Food Ingredients". US Food and Drug Administration. 6 July 2023. https://www.fda.gov/food/food-additives-and-gras-ingredients-information-consumers/types-food-ingredients.
42. ↑ "US FDA Color Additive Status List". Fda.gov. https://www.hfpappexternal.fda.gov/scripts/fdcc/index.cfm?set=ColorAdditives.
43. ↑ "Eight artificial dyes will be phased out of US food supply, Health Secretary RFK Jr. says". USA Today. https://www.usatoday.com/story/news/politics/2025/04/22/rfk-jr-food-artificial-dye-food-supply/83211595007/#.
44. ↑ "Red No. 3 and Other Colorful Controversies". FDA. https://www.fda.gov/bbs/topics/CONSUMER/CON00063.html. "FDA terminated the provisional listings for FD&C Red No. 3 on January 29, 1990, at the conclusion of its review of the 200 straight colors on the 1960 provisional list."
45. ↑ 45.0 45.1 45.2 45.3 "News of Food; U.S. May Outlaw Dyes Used to Tint Oranges and Other Foods". New York Times. January 19, 1954. https://www.nytimes.com/1954/01/19/archives/news-of-food-u-s-may-outlaw-dyes-used-to-tint-oranges-and-other.html. "The use of artificial colors to make foods more attractive to the eye may be sharply curtailed by action of the United States Food and Drug Administration. Three of the most extensively used food colorants are being considered for removal from the Government's list of colors certified as safe for internal and external use and consumption."
46. ↑ 46.0 46.1 46.2 46.3 46.4 "Food coloring". Encyclopædia Britannica. https://www.britannica.com/ebc/article-9034796. Retrieved 2007-08-21. "Among the colours that have been "delisted," or disallowed, in the United States are FD&C Orange No. 1; FD&C Red No. 32; FD&C Yellows No. 1, 2, 3, and 4; FD&C Violet No. 1; FD&C Red No. 2; and FD&C Red No. 4. Many countries with similar food colouring controls (including Canada and Great Britain) also ban the use of Red No. 40, and Yellow No. 5 is also undergoing testing.".
47. ↑ "CFR Title 21 Part 81.10: Termination of provisional listings of color additives". Accessdata.fda.gov. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?FR=81.10.
48. ↑ Deshpande, S.S., ed. (2002), "8.5.3 Toxicological Characteristics of Colorants Subject to Certification", Handbook of Food Toxicology, Food Science and Technology, CRC Press, p. 234, ISBN 9780824707606, https://books.google.com/books?id=Mk-IdNTTJB0C&pg=PA234
49. ↑ ﻿Technical Report Series 960: Evaluation of Certain Food Additives and Contaminants﻿ (Report). World Health Organization. 2011. http://whqlibdoc.who.int/trs/WHO_TRS_960_eng.pdf.
50. ↑ ﻿Compendium of Food Additive Specifications﻿ (Report). Food and Agriculture Organization. 2011. http://www.fao.org/docrep/014/i2358e/i2358e00.pdf.
51. ↑ ﻿General Standard for Food Additives﻿ (Report). 1995. CODEX STAN 192-1995. http://www.codexalimentarius.net/gsfaonline/docs/CXS_192e.pdf.
52. ↑ "How Safe Are Color Additives?". US Food and Drug Administration. 13 July 2023. https://www.fda.gov/consumers/consumer-updates/how-safe-are-color-additives.
53. ↑ "What to Know About California's New Law Banning Food Additives, Including Red Dye No. 3" (in en). Smithsonian Magazine. 17 October 2023. https://www.smithsonianmag.com/smart-news/california-bans-food-additives-including-red-dye-no-3-180983082/. Retrieved 24 June 2024.
54. ↑ Feingold, B.F. (1973). Introduction to clinical allergy. Charles C. Thomas. ISBN 978-0-398-02797-1.
55. ↑ Tomaska LD and Brooke-Taylor, S. Food Additives – General pp. 449–454 in Encyclopedia of Food Safety, Vol 2: Hazards and Diseases. Eds, Motarjemi Y et al. Academic Press, 2013. ISBN 9780123786135
56. ↑ Kavale KA, Forness SR (1983). "Hyperactivity and Diet Treatment: A Meta-Analysis of the Feingold Hypothesis". Journal of Learning Disabilities 16 (6): 324–330. doi:10.1177/002221948301600604. ISSN 0022-2194. PMID 6886553.
57. ↑ 57.0 57.1 57.2 57.3 57.4 57.5 FDA. Background Document for the Food Advisory Committee: Certified Color Additives in Food and Possible Association with Attention Deficit Hyperactivity Disorder in Children: March 30–31, 2011
58. ↑ Millichap JG, Yee MM (February 2012). "The diet factor in attention-deficit/hyperactivity disorder". Pediatrics 129 (2): 330–337. doi:10.1542/peds.2011-2199. PMID 22232312.
59. ↑ Amchova, Petra; Kotolova, Hana; Ruda-Kucerova, Jana (2015). "Health safety issues of synthetic food colorants". Regulatory Toxicology and Pharmacology 73 (3): 914–922. doi:10.1016/j.yrtph.2015.09.026. PMID 26404013. Bibcode: 2015RToxP..73..914A.
60. ↑ 60.0 60.1 60.2 Sarah Chapman of Chapman Technologies on behalf of Food Standards Agency in Scotland. March 2011 [Guidelines on approaches to the replacement of tartrazine (E102), allura red (E129), ponceau 4R (E124), quinoline yellow (E104), sunset yellow (E110), and carmoisine (E122) in food and beverages]
61. ↑ Committee of Toxicity (September 2007). "Statement on the effects of mixtures of certain food colours and a preservative on behaviour in children". UK Food Standards Agency. https://cot.food.gov.uk/sites/default/files/cot/colpreschil.pdf. Retrieved 24 June 2024.
62. ↑ EFSA Panel on Food Additives and Nutrient Sources added to Food (2009). "Scientific Opinion on the re-evaluation of Sunset Yellow FCF (E 110) as a food additive". EFSA Journal 7 (11): 1330. doi:10.2903/j.efsa.2009.1330.
63. ↑ EFSA Panel on Food Additives and Nutrient Sources added to Food (2009). "Scientific Opinion on the re-evaluation of Ponceau 4R (E 124) as a food additive". EFSA Journal 7 (11): 1328. doi:10.2903/j.efsa.2009.1328. https://www.efsa.europa.eu/en/efsajournal/pub/1328.
64. ↑ EFSA Panel on Food Additives and Nutrient Sources added to Food (November 2009). "Scientific Opinion on the re-evaluation Tartrazine (E 102)". EFSA Journal 7 (11): 1331–1382. doi:10.2903/j.efsa.2009.1331. http://www.efsa.europa.eu/en/efsajournal/pub/1331.
65. ↑ "Titanium dioxide: E171 no longer considered safe when used as a food additive" (in en). European Food Safety Authority. 2021-05-06. https://www.efsa.europa.eu/en/news/titanium-dioxide-e171-no-longer-considered-safe-when-used-food-additive.
66. ↑ "Titanium Dioxide as a Color Additive in Foods". US Food and Drug Administration. 4 March 2024. https://www.fda.gov/industry/color-additives/titanium-dioxide-color-additive-foods.

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