Exceeding the level of dyes in trout: a threat to consumers' health.
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Exceeding the level of dyes in trout: a threat to consumers' health.

In March 2025, specialists from the Federal Service for Veterinary and Phytosanitary Surveillance (Rosselkhoznadzor) discovered an excess of triphenylmethane-based dyes in a sample of trout, which does not meet the food safety standards. These dyes can potentially cause liver cancer in humans.

22 March 2025 22 March 2025

During the period from March 1 to March 19, 2025, 26 samples were delivered to the laboratory for chemical-toxicological research at the Moscow reference laboratory, subordinate to the Rosselkhoznadzor, to study the residual content of triphenylmethane-based dyes.

After conducting the analysis, specialists found that the sample of chilled trout exceeds the permissible norm for triphenylmethane-based dyes.

The analysis was carried out to verify compliance with the requirements of the Technical Regulation of the Customs Union 021/2011 "On food product safety." According to these requirements, the presence of antibiotics of this group in products is not allowed. The research results were entered into the veterinary system "Vesta."

Malachite green is used to treat parasitic, fungal diseases, and bacterial infections in fish in aquaculture. When used, the antibiotic transforms into leucomalachite green, which accumulates in the fish's fatty tissues and is slowly excreted from the body.

Crystal Violet possesses antimicrobial properties and can be used in the treatment of skin and eye infections in pets and fish.

Triphenylmethane dyes, when entering food chains, can accumulate in the human body. They pose a danger due to their carcinogenic activity, which could lead to the development of liver cancer.

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