About aflatoxin solution in waste oil - Chinahourly

SMD aluminum electrolytic capacitor

Ditch oil (squat oil) refers to all kinds of inferior oils that exist in life, such as recycled edible oil, used fried oil, and oil extracted from leftover food. The largest source of waste oil is the grease trap of the sewers of large urban hotels. Long-term consumption may cause cancer, which is extremely harmful to the human body. According to calculations by relevant departments, the various types of hotels in a city produce no more than 3,000 tons of waste oil per month. The waste oil is very harmful. According to scientific tests, the rancidity and carbonyl value of the waste oil far exceed the national edible oil hygiene index. The rancid oil damages several enzyme systems such as cytochrome enzymes in the body. The high oxidation of oil produces aflatoxin toxin, which can cause a variety of cancers. The long-term intake of rancid oils and fats in animals will cause weight loss and development. obstacle. The highly toxic aflatoxin in the waste oil is 100 times more toxic and is the strongest chemical carcinogen found so far. Experiments have shown that long-term low-dose aflatoxin can cause 100% of liver cancer in animals, and cancer can occur in other parts, such as gastric adenocarcinoma, kidney cancer, rectal cancer, and breast, ovary, small intestine and other cancers.

Aflatoxin (AFT) is a group of chemically similar compounds. Currently, 12 species have been identified: B1, B2, G1, G2, M1, M2, P1, Q, H1, GM, B2a and toxic alcohol. Aspergillus flavus The basic structure of the toxin is difuran ring and coumarin, and B1 is a derivative of dihydrofuran oxaphthalene. It contains a difuran ring and an oxaphthalene (coumarin). The former is basic toxicity. Structure, the latter is related to carcinogenesis. M1 is a metabolite derived from aflatoxin B1 by hydroxylation in the body. The main molecular formulas include B1, B2, G1, G2, M1, M2, etc. Among them, M1 and M2 are mainly present in In milk, B1 is the most toxic and carcinogenic substance. A class of chemically similar compounds are derivatives of dihydrofuran coumarin. Aflatoxin is a secondary metabolite produced primarily by Aspergillus flavus, a. parasiticus, with the highest incidence of aflatoxin in food and feed in hot and humid regions.

The limit of aflatoxin b1 is clearly defined in the previous relevant food hygiene standards, including: corn, peanut kernels, peanut oil should not exceed 20ug/kg; rice and other oils used should not exceed 10ug/kg; other food, Beans and fermented foods shall not exceed 5ug/kg; aflatoxin b1 shall not be detected in infant milk substitute foods.

For the detection of aflatoxin b1 exceeding the standard in the waste oil, combined with the relevant detection standards, it can be detected by high performance liquid chromatography instrument with fluorescence detector to ensure the quality and safety of the edible oil for the people.