Magnesium phosphates
Score impact
0.00
points/product
Description
The food additive E343, known as magnesium phosphates, is an inorganic compound primarily used as a stabilizer, texture agent, and acidity regulator in processed foods. Its origin is mineral: it is obtained from phosphate rocks treated with phosphoric acid and subsequent neutralization with magnesium hydroxide or carbonate.
Industrially, production involves the controlled reaction of phosphoric acid with magnesium salts, followed by purification and drying to obtain a white crystalline powder. Physicochemical properties include low solubility in water (except monomagnesium phosphate), thermal stability, and pH buffering capacity. Its main function is to prevent ingredient separation, improve texture, and maintain moisture in products such as processed meats, processed cheeses, evaporated milks, and plant-based beverages.
Historically, phosphates have been used since the early 20th century, and E343 was approved in the European Union after evaluations by EFSA (European Food Safety Authority) and WHO (World Health Organization). EFSA has established an Acceptable Daily Intake (ADI) of 70 mg/kg body weight for total phosphates (expressed as phosphorus), considering that magnesium does not contribute significantly to toxicity.
The overall safety assessment is favorable: at authorized doses, no significant adverse effects have been observed in humans. However, excessive phosphate intake can disrupt the calcium-phosphorus balance, especially in individuals with chronic kidney disease. On labeling, it must appear as "magnesium phosphates" or "E343", and its presence is mandatory in the ingredient list.
The food safety of E343 is supported by decades of use and toxicological studies confirming its low acute and chronic toxicity.
E343 is used in various food categories according to Regulation EC 1333/2008. It is used as a stabilizer in meat products (sausages, cooked ham) to retain water and improve texture; in processed and melted cheeses to prevent fat separation; in evaporated and condensed milks to maintain homogeneity; in plant-based beverages (soy, almond) as a stabilizer; and in bakery products as an acidity regulator.
In the Spanish market, it is found in brands such as ElPozo (cold cuts), Central Lechera (evaporated milks), and Alpro (plant-based beverages). Authorized limits vary: in processed meats up to 5 g/kg (expressed as P2O5), in processed cheeses up to 20 g/kg, and in plant-based beverages up to 1 g/kg. Comparatively, the FDA (USA) allows its use as GRAS (Generally Recognized as Safe) without specific limits, while Japan authorizes it with restrictions similar to European ones. The ADI of 70 mg/kg/day (total phosphates) is widely respected in usual usage doses.
Magnesium phosphates (E343) are considered safe at authorized doses. EFSA and WHO have evaluated their toxicity and found no significant adverse effects in humans with normal consumption. However, excessive intake of total phosphates (above the ADI) can cause hyperphosphatemia, which disrupts the calcium-phosphorus balance and may lead to vascular calcification or bone loss, especially in individuals with chronic kidney failure. The additional magnesium does not pose a risk, as its intake is regulated by the body. Sensitive populations include patients with advanced kidney disease, who should limit phosphate intake.
No significant drug interactions with E343 have been documented. EFSA concludes that there is no evidence of carcinogenicity, mutagenicity, or reproductive toxicity.
In summary, E343 is safe for the general population when consumed within established limits.
- Monomagnesium phosphate
- Dimagnesium phosphate
- Trimagnesium phosphate
- Magnesium orthophosphate
- Tribasic magnesium phosphate
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