Brominated vegetable oil

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Brominated vegetable oil (BVO) is a complex mixture of plant-derived triglycerides that have been modified by atoms of the element bromine bonded to the fat molecules. Brominated vegetable oil has been used to help emulsify citrus-flavored beverages, especially soft drinks, preventing them from separating during distribution. Brominated vegetable oil has been used by the soft drink industry since 1931, generally at a level of about 8  ppm. [1] [2] Several countries have banned use of BVO in food and drink products because of the potential for adverse health effects in humans.

Contents

Use

Careful control of the type of oil used allows bromination of it to produce BVO with a specific density of 1.33 g/mL, which is 33% greater than water (1 g/mL). As a result, it can be mixed with less-dense flavoring agents such as citrus oil to produce an oil which matches the density of water or other products. The droplets containing BVO remain suspended in the water rather than separating and floating to the surface. [2]

Alternative food additives used for the same purpose include sucrose acetate isobutyrate (SAIB, E444) and glycerol ester of wood rosin (ester gum, E445).

Similar iodinated oils have been used as contrast agents and for goiter prophylaxis in populations with low dietary iodine intake.

Chemical structure of a representative constituent of BVO, featuring, from the top, brominated linoleate, linolenoate, and oleate esters. BVOstructure.png
Chemical structure of a representative constituent of BVO, featuring, from the top, brominated linoleate, linolenoate, and oleate esters.

Brominated vegetable oil has the CAS number 8016-94-2 and the EC number 232-416-5. [3]

Regulation

United States

In the United States, BVO was designated in 1958 as generally recognized as safe (GRAS), [2] but this was withdrawn by the U.S. Food and Drug Administration (FDA) in 1970. [4] The U.S. Code of Federal Regulations imposed restrictions on the use of BVO as a food additive in the United States, limiting the concentration to 15 ppm, [5] the amount of free fatty acids to 2.5 percent, and the iodine value to 16. [6]

BVO was one of four substances that the FDA has defined as "interim" food additives; [7] [8] the other three were acrylonitrile copolymers, mannitol, and saccharin. [9]

An online petition at Change.org asking PepsiCo to stop adding BVO to Gatorade and other products collected over 200,000 signatures by January 2013. [10] The petition pointed out that since Gatorade is sold in countries where BVO is not approved, there was already an existing formulation without this ingredient. PepsiCo announced in January 2013 that it would no longer use BVO in Gatorade. [11] [12] On May 5, 2014, Coca-Cola and PepsiCo said they would remove BVO from their products. [13] As of early 2020, both companies have stopped using BVO in all their products. [14]

In October 2023, California Governor Gavin Newsom approved a law that would ban the manufacture, sale, and distribution of brominated vegetable oil, along with three other additives (potassium bromate, propylparaben, and Red 3), becoming the first state to ban food additives that were otherwise approved by the FDA. [15] [16]

In July 2024, the FDA revoked regulations allowing the use of BVO in food, [17] following a proposal made in November 2023. [18] The agency concluded that the intended use of BVO in food is no longer considered safe after the results of studies conducted in collaboration with the National Institutes of Health (NIH) found the potential for adverse health effects in humans, including headaches and nervous system damage. [17] The final rule banning BVO took effect August 2, 2024, and beverage companies have one year to reformulate their products to comply with the final rule. [19]

Other countries

Canada has banned the use of brominated vegetable oil since August 30, 2024. The decision follows a proposal made in May 2024 [20] citing mounting health concerns. This additive was previously permitted in drinks with a limit of 15 ppm in beverages with citrus or spruce oils. [21] Beverage companies have one year from that date to reformulate and relabel any affected products.

In the European Union, BVO has been banned from use since 2008 [22] (it was originally banned in the UK and several other European countries in 1970). [23] Any BVO-containing products that may slip through the regulations are pulled from shelves upon discovery. [24] In the EU, beverage companies commonly use glycerol ester of wood rosin or locust bean gum as an alternative to BVO.

In India, standards for soft drinks have prohibited the use of BVO since 1990. [22]

In Japan, the use of BVO as a food additive has been banned since 2010. [22]

Health effects

There are case reports of adverse effects associated with excessive consumption of BVO-containing products. One case reported that a man who consumed two to four liters of a soda containing BVO on a daily basis experienced memory loss, tremors, fatigue, loss of muscle coordination, headache, and ptosis of the right eyelid, as well as elevated serum chloride. [25] In the two months it took to correctly diagnose the problem, the patient also lost the ability to walk. Eventually, bromism was diagnosed and hemodialysis was prescribed which resulted in a reversal of the disorder. [26]

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References

  1. ↑ "Pepsi Product Information: Ingredient Glossary". PepsiCo. Archived from the original on 2008-01-08. Retrieved 2007-09-17.
  2. 1 2 3 4 Paul Bendig; Lisa Maier; Walter Vetter (2012). "Brominated vegetable oil in soft drinks – an underrated source of human organobromine intake". Food Chemistry. 133 (3): 678–682. doi:10.1016/j.foodchem.2012.01.058.
  3. ↑ "EC Inventory". echa.europa.eu. Retrieved 2023-11-04.
  4. ↑ Food additives. Brominated vegetable oils; removal from list of substances generally recognized as safe. Federal Register (1970), 35(18), 1049
  5. ↑ D.L. Turner (1972). "Determination of brominated vegetable oil concentrations in soft drinks using a specific ion electrode". Journal of Food Science. 37 (5): 791–792. doi:10.1111/j.1365-2621.1972.tb02754.x.
  6. ↑ "Code of Federal Regulations, Title 21—Food and Drugs, Chapter I—Food and Drug Administration, Department of Health and Human Services, Subchapter B—Food for Human Consumption, Part 180—Food Additives Permitted in Food or in Contact with Food on an Interim Basis Pending Additional Study". Title 21 of the Code of Federal Regulations . Retrieved 2007-09-17.
  7. ↑ "Food Additive Status List". Food and Drug Administration. 26 August 2021.
  8. ↑ Institute of Medicine (US) Food Forum (1999). Enhancing the Regulatory Decision-Making Approval Process for Direct Food Ingredient Technologies. The National Academies Press. doi:10.17226/9453. ISBN   978-0-309-06486-6. PMID   25077191.
  9. ↑ Institute of Medicine (US) Food Forum (1999). Enhancing the Regulatory Decision-Making Approval Process for Direct Food Ingredient Technologies. Institute of Medicine. p. 31. doi:10.17226/9453. ISBN   978-0-309-06486-6. PMID   25077191 . Retrieved 2007-09-17.
  10. ↑ Strom, Stephanie (13 December 2012). "Another look at a drink ingredient, Brominated Vegetable OIl". New York Times. Retrieved 23 December 2012.
  11. ↑ Stephanie Strom (January 25, 2013). "PepsiCo Will Halt Use of Additive in Gatorade" (blog by NYT journalist). The New York Times. Retrieved 2013-01-26.
  12. ↑ "Gatorade to remove controversial ingredient". AP. Retrieved 2013-01-26.
  13. ↑ Choi, Candice (May 5, 2014). "Coke, Pepsi dropping 'BVO' from all drinks". Associated Press. Archived from the original on 2014-05-08.
  14. ↑ "Watch for This Harmful Chemical in Your Soda | Environmental Working Group". www.ewg.org. 2021-01-13. Retrieved 2023-11-17.
  15. ↑ "California Legislature passes first bill in U.S. to ban food additives, including red dye No. 3". NBC News. 2023-09-12. Retrieved 2024-09-03.
  16. ↑ Cimons, Marlene (October 11, 2023). "California isn't banning Skittles, but four additives will be removed". The Washington Post. Retrieved August 17, 2024.
  17. 1 2 "FDA Revokes Regulation Allowing the Use of Brominated Vegetable Oil". U.S. Food and Drug Administration. July 2, 2024. Retrieved 2024-07-02.
  18. ↑ Rogers, Kristen (2023-11-02). "FDA proposes ban on additive found in sodas". CNN. Retrieved 2023-11-03.
  19. ↑ "Revocation of Authorization for Use of Brominated Vegetable Oil in Food". Federal Register. 2024-07-03. Retrieved 2024-09-03.
  20. ↑ "Proposal to remove brominated vegetable oil from the List of permitted food additives with other accepted uses". Government of Canada. 2024-05-21. Retrieved 2024-08-17.
  21. ↑ Canada, Health (2024-08-30). "Modification to the List of permitted food additives with other accepted uses to remove brominated vegetable oil". www.canada.ca. Retrieved 2024-11-17.
  22. 1 2 3 "BVO: The FDA finally bans brominated vegetable oil". Center for Science in the Public Interest. Retrieved 2024-11-17.
  23. ↑ Friberg, Stig; Larsson, Kare; Sjoblom, Johan (2003-11-04). Food Emulsions. CRC Press. ISBN   978-0-203-91322-2.
  24. ↑ "Banned emulsifier in soft drink". www.europarl.europa.eu. Retrieved 2020-06-18.
  25. ↑ Horowitz BZ (1997). "Bromism from excessive cola consumption". Journal of Toxicology: Clinical Toxicology . 35 (3): 315–320. doi:10.3109/15563659709001219. PMID   9140329.
  26. ↑ Matthew Alice (1999-07-29). "Straight from the Hip: What is Brominated Vegetable Oil?". San Diego Reader. Retrieved 2007-09-17.
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