E625 - Magnesium diglutamate

Origin

Magnesium diglutamate is a salt formed from glutamic acid and magnesium. Glutamic acid is a naturally occurring non-essential amino acid. Magnesium diglutamate is produced synthetically by neutralizing glutamic acid with a magnesium source. It is used as a flavor enhancer in food products.

Usage

As a flavor enhancer, magnesium diglutamate imparts a savory or umami taste to foods. It is used in a variety of processed foods, including soups, sauces, seasonings, and snack foods. It can enhance the existing flavors of a product, making it more palatable. The typical usage levels vary depending on the application, but it is generally used in small quantities. There is no ADI (Acceptable Daily Intake) specified by JECFA (Joint FAO/WHO Expert Committee on Food Additives) for glutamates, including magnesium diglutamate, because at the levels used in food, they are not considered to pose a health risk.

Side Effects

While glutamates are generally considered safe, some individuals report sensitivity to them. Symptoms reported by sensitive individuals include headache, flushing, sweating, tingling, burning sensations, facial pressure or tightness, chest pain, nausea, weakness, and heart palpitations. These symptoms are often referred to as "MSG symptom complex" or "glutamate sensitivity". However, scientific evidence supporting a direct causal link between glutamate consumption and these symptoms is limited. Studies have shown that large doses of glutamates given on an empty stomach may trigger these symptoms in susceptible individuals, but the levels typically found in food are unlikely to cause problems. Regulatory bodies like EFSA (European Food Safety Authority) have concluded that dietary exposure to glutamates is not of concern for the general population at the current permitted levels.

Regulatory Status

Magnesium diglutamate is approved for use as a food additive in many countries, including those in the European Union (where it is designated as E625). It is also permitted in the United States. The regulatory status is based on safety evaluations conducted by expert committees such as JECFA and EFSA. These evaluations consider the available scientific data, including toxicological studies, to determine the acceptable levels of use in food.