1. Overview:

Aflatoxins are toxic metabolites of a class of fungi (such as Aspergillus flavus and Aspergillus parasiticus). They are highly carcinogenic and are found mainly in grains, peanuts, nuts, cottonseeds, animal feed, vegetable oils, as well as animal tissues and blood. Among them, Aflatoxin B1 (AFT B1) ranks first in terms of toxicity, carcinogenicity and frequency of contamination. Aflatoxin M1 is a hydroxylated metabolite of Aflatoxin B1 and a strong carcinogen. Cow milk and its products are prone to Aflatoxin M1 contamination.

2. Principle:

The basis of the measurement is the antigen-antibody reaction. Antibodies are connected to the column and the aflatoxin in the sample is extracted, filtered, and diluted, and then passed slowly through the aflatoxin immunoaffinity column. The toxins bind to the antibodies in the column and the immunoaffinity column is then washed to remove other unrelated substances that have not been bound. Aflatoxin is eluted with methanol, and then injected into the analytical instrument for detection.

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