How Deoxynivalenol is Appeared?

What is DON?

  Vomitoxin (vomitoxin), also known as deoxynivalenol (DON), is a trichothecenes compound and is an important indicator toxin for grain scab caused by Fusarium species, because it can cause named after the vomit of pigs. It is one of the mycotoxins that contaminate grains worldwide, usually in high concentrations in crops such as wheat, corn, barley and oats.

How is DON produced?

Production of Fusarium toxins in the field stage

  The production of Fusarium toxins in the field is mainly affected by meteorological conditions, including temperature, humidity, drought, and precipitation. The occurrence of insect pests can promote the spread of Fusarium and exacerbate the severity of wheat scab and corn ear rot; in addition, topography can also affect the production of Fusarium toxins, such as differences between hilltops and depressions, resulting in the spatial distribution of soil moisture and air humidity non-uniformity, and humidity is an important factor affecting the production of Fusarium toxins.

Production of Fusarium toxins during grain harvesting.

Temperature and humidity during grain harvesting also affect the content of DON in grains. Every year in my country’s wheat harvest season, a considerable amount of deoxynivalenol exceeding the standard will be produced due to the influence of rainy weather.

Changes in DON content during grain storage.

Temperature and humidity are important factors for fungal growth and toxin production. Appropriate temperature and humidity during storage are important reasons to promote the continued reproduction and spread of germs on grains and aggravate grain toxin contamination. The optimum temperature for most fungi is 25-30. Too high or too low temperature is not conducive to fungal growth and toxin production.

  DON has a wide range of hazards and cannot be ignored, so as long as there is DON, corresponding prosecution work must be done. Meizheng Rapid Test Kits can quickly detect DON content in corn, wheat, rice, barley, millet and oats and other grains, feed, flour, edible oil, condiments and other foods. The Rapid Test Kits are for grain and oil monitoring centers, grain and oil feed production and processing, food processing trade, self-inspection of livestock and poultry farmers, and rapid market screening by industrial and commercial quality supervision departments.

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