Acetic acid esters of mono- and diglycerides of fatty acids
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Description
The food additive E472A, known as acetic acid esters of mono- and diglycerides of fatty acids, is an emulsifier widely used in the food industry. It is obtained by esterification of mono- and diglycerides of fatty acids with acetic acid. Industrially, it is produced from edible fats and oils (of vegetable or animal origin) that undergo glycerolysis to obtain mono- and diglycerides, which then react with acetic anhydride or acetic acid under controlled conditions.
The final product is a complex mixture of esters, mainly monoacetyl diglycerides and diacetyl monoglycerides. Physically, it appears as a viscous liquid or waxy solid from white to light yellow, with a slight vinegar odor. It is soluble in fats and oils, and dispersible in hot water.
Its main function is as an emulsifier, stabilizer, and texturizing agent, improving the homogeneity and consistency of products. Historically, it was approved in the European Union as a food additive after safety evaluations.
The European Food Safety Authority (EFSA) has re-evaluated its safety several times, establishing an Acceptable Daily Intake (ADI) of 30 mg/kg body weight for the group of mono- and diglyceride esters of fatty acids (E472a-f). The World Health Organization (WHO) has also evaluated it, concluding that it is safe at authorized use levels. Regarding food safety, E472A is considered safe for the general population, with no significant documented adverse effects.
On labeling, it must appear as 'acetic acid esters of mono- and diglycerides of fatty acids' or with its E number.
E472A is mainly used as an emulsifier in a wide variety of food products. According to Regulation EC 1333/2008, it is authorized in categories such as bakery and pastry products (bread, pastries, cookies), dairy products (whipped cream, ice cream, dairy desserts), margarines and spreadable fats, sauces and mayonnaises, confectionery products (chocolate, candies), and beverages (liquid coffees, milkshakes).
In the Spanish market, it is found in sliced bread, industrial pastries, ice cream, margarines, and emulsified sauces. Authorized limits vary by category, typically 5 to 10 g/kg, although in some products like fine bakery goods it can reach up to 20 g/kg. Compared to the FDA, which classifies it as GRAS (Generally Recognized as Safe) without specific limits, the EU sets maximum limits. Japan also allows it with similar restrictions. Its versatility makes it ideal for stabilizing water-oil emulsions, improving texture, and extending shelf life.
Toxicological studies conducted by EFSA and WHO have not identified significant adverse effects associated with the consumption of E472A at authorized doses. The ADI of 30 mg/kg/day is based on a NOAEL (No Observed Adverse Effect Level) of 3000 mg/kg/day in animal studies, applying a safety factor of 100. No carcinogenic, genotoxic, or teratogenic effects have been documented.
In humans, there is no evidence of specific allergic reactions, although people with sensitivity to acetic acid could experience mild discomfort if consumed in large amounts, but this is not relevant at dietary doses. No interactions with medications are known. Sensitive populations such as children and pregnant women do not present additional risks. EFSA concludes that E472A is safe in authorized uses, and WHO supports this evaluation.
Therefore, no relevant side effects are considered for the average consumer.
- Acetic acid esters of mono- and diglycerides of fatty acids
- Acetylated monoglycerides
- Acetoglycerides
- Glycerin esters of fatty acids and acetic acid
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