Lactic acid esters of mono- and diglycerides of fatty acids
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Description
The food additive E472B, also known as lactic 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 lactic acid, a process that can be carried out chemically or enzymatically. The result is a mixture of esters that act as emulsifying, stabilizing, and texture-improving agents.
From a physicochemical point of view, E472B is a waxy solid or viscous liquid ranging from white to light yellow, soluble in fats and oils, and insoluble in water. Its main function is to reduce interfacial tension between immiscible phases, such as water and oil, allowing the formation of stable emulsions. Additionally, it improves the consistency and volume of baked goods and delays bread staling.
Historically, mono- and diglycerides have been used since the early 20th century, and their lactic derivatives were authorized in the European Union after safety evaluations. EFSA (European Food Safety Authority) has evaluated E472B on several occasions, establishing an Acceptable Daily Intake (ADI) of 30 mg/kg body weight for the group of mono- and diglyceride esters (E472a-f). WHO has also evaluated it and considers it to pose no significant risks at current usage levels. Regarding labeling, it must be declared as "lactic acid esters of mono- and diglycerides of fatty acids" or with its E number.
The overall safety assessment is high, being considered a safe additive for the general population, with no special restrictions except in cases of rare allergies to dairy components (although lactic acid is usually not allergenic).
In summary, E472B is an effective and safe emulsifier, supported by decades of use and rigorous scientific evaluations.
E472B is mainly used as an emulsifier and stabilizer in a wide variety of foods. According to Regulation EC 1333/2008, it is authorized in categories such as fine bakery products (cakes, cookies), ice cream, dairy desserts, emulsified sauces, margarines, chocolates and cocoa products, as well as dairy drinks and substitutes.
In the Spanish market, it is found in brands of sliced bread (Bimbo, Panrico), cookies (María, Digestive), ice cream (Nestlé, Frigo) and margarines (Flora, Tulipán). Usage limits vary by category: for example, in fine bakery products up to 10 g/kg is allowed, while in ice cream up to 5 g/kg. Compared to the FDA, which also considers it GRAS (Generally Recognized as Safe) for similar uses, the EU has more specific limits. In Japan, it is permitted without quantitative restrictions in most foods.
Its versatility makes it ideal for improving the texture and stability of low-fat or gluten-free products.
Toxicological studies conducted by EFSA and WHO have not documented significant adverse effects associated with the consumption of E472B at authorized doses. The ADI of 30 mg/kg bw/day was established with a wide safety margin, based on subchronic and chronic toxicity studies in animals that showed no relevant effects. In humans, no specific allergic reactions have been reported, although individuals with milk allergy may have sensitivity to lactic acid (rare).
No interactions with medications are known. EFSA concludes that there is no concern for genotoxicity, carcinogenicity, or reproductive toxicity. In summary, E472B is considered safe for the general population, with no documented side effects at current usage levels.
- Lactic acid esters of mono- and diglycerides
- Lactic acid esters of mono- and diglycerides of fatty acids
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