Where did the milk come from?

Where is aflatoxin in life?

Aspergillus flavus is widely found in nature, and spores can spread in the air, but toxins are only produced when mycelia grow.

Aspergillus flavus is widely present in the soil, and mycotoxins produce toxins as they grow. The resulting spores can diffuse into the air and then infect suitable parasites to produce aflatoxins. When food is not dried in time and stored improperly, it is often easily contaminated by Aspergillus flavus or Aspergillus parasiticus to produce such toxins. Therefore, aflatoxin mainly exists in grains, oils and their products that have been infested by Aspergillus flavus. . Peanuts, peanut oil, corn, rice, and cottonseed are the most common, and are also common in animal foods such as liver and salted fish as well as milk and dairy products.

According to the relevant papers of the “China Food Safety Magazine”, in China, the distribution of Aspergillus flavus-producing bacteria in Guangxi is relatively wide. The total distribution is as follows: Central China, South China, and North China produce more strains of virus, and the amount of toxin produced is also large. There are fewer northeast and northwest regions. [detailed]

Where did the excess aflatoxin detected in Mengniu's milk come from?

Two possibilities: The cow's feed or milk is not stored properly.

Professor Fu Liang, deputy director of the Department of Food Science and Engineering of Citi University, believes that for the detection of aflatoxin M1 exceeding the standard for pure milk products, it may be improperly stored, or it may become contaminated during processing and transportation, and it may grow mold. Second, it is possible. It is the feed consumed by dairy cows that contains excess aflatoxin M1 that is digested and then transferred to milk during milk production. When aflatoxin is eaten by animals, some of it accumulates in the animal's body, and the other part of it converts to milk and urine. The conversion rate is generally 3.45%-11.39%. Therefore, to ensure that the amount of aflatoxin M1 in milk does not exceed 0.5 μg/kg, the United States Food and Drug Administration (FDA) requires that aflatoxin B1 in feed should not exceed 30 μg/kg.