Method for reducing vomitoxin in wheat grain by wet ozone

Abstract

The invention relates to a method for reducing vomitoxin in wheat grain by wet ozone, which is characterized by comprising the following steps: 1, placing wheat grain in water according to the ratio of wheat grain to water being equal to 1:(1-1.5), soaking in a short time, draining after the soaking, and controlling the water content of the wheat grain to be 14%-14.5%; 2, processing the drained wheat grain with ozone immediately, wherein an ozone processor adopts a bed fumigation method, the ozone concentration is controlled at 100-120mg / L, the processing time is 30-40 min, and the vomitoxin content in the wheat grain can be reduced by 60% to 70% without affecting the physical and chemical properties of the wheat grain; and 3, placing the detoxified wheat in a boiling dryer, and reducing the water content of the wheat grain to 12% or lower than 12% by adopting a low-temperature hot air drying process. The vomitoxin content of the wheat treated with the method provided by the inventioncan be reduced by 60% to 70%, which complies with relevant standards that the limited index of vomitoxin of wheat flour in food is 1000 (mug / kg) specified in National Food Safety Standard for Mycotoxin Limits in Foods (GB 2761-2011), and the water content is 12% or less than 12%, therefore, the wheat grain can be stored for a long term, and the application range is very broad.

Description

technical field [0001] The invention relates to the field of food safety processing, in particular to a method for reducing wheat grain vomitoxin by wet ozone. Background technique [0002] For a long time, due to the increase in the frequency of gibberellin outbreaks in wheat, vomitoxin has become a major threat to wheat production and quality safety, especially to important winter wheat areas such as the Yangtze River Basin and the Huanghuai River Basin in China. The main component of vomitoxin is DON (deoxynivalenol, deoxynivalenol), which belongs to the trichothecene compound. Vomitotoxin is very stable in food processing. Baking temperature is 210°C, frying temperature is 140°C, or boiling, are difficult to remove. DON contamination is widely found in countries all over the world, and has been found in China, Japan, the United States, the former Soviet Union, and South Africa. DON mainly contaminates cereal crops such as wheat, barley, oats, and corn, and also contami...

AI Technical Summary

Problems solved by technology

[0003] For wheat grains, the vomitoxin is mainly stored in the bran layer of wheat grains. The traditional method of removing vomitoxin from wheat grains is to wash the wheat, which will result in higher moisture content in the wheat and greater energy consumption for later drying.

Images