Phytic acid (Phytic acid)

Other names: Phytic acid, Phytate, E391

Harm score: 2 (Derivatives of natural substances)

Phytic acid, also known as phytate or E391, is a naturally occurring organic acid found in many plants, especially cereals and seeds. This substance, which is an essential source of phosphorus for plants, is difficult for humans to digest. In fact, phytic acid and its salts, phytates, are able to bind to minerals such as manganese, magnesium, calcium or iron, thereby preventing their absorption into the human body.

Although E391 is not often found as a direct additive in foods, it is a natural component of many of them, especially legumes, nuts, seeds, whole grain cereals and rye varieties, where it can make up to 1-5% of their weight. In addition, it is also an important component of animal feeds, where it serves as a source of phosphorus. However, a high phytate content can lead to nutritional deficiencies of important minerals in animals, so their content in feed must be regulated accordingly. It is also used in the production of bioplastics and in cosmetics, for example as a stabiliser in sun creams. In the case of excessive consumption of foods high in phytic acid, a balanced diet with sufficient minerals is recommended to limit the potential risk of deficiency.