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A method for rapidly and effectively degrading deoxynivalenol in grains

A rapid degradation and grain technology, applied in the field of food safety, can solve the problems of damage to the nutrients of raw materials, inability to promote efficient promotion, environmental pollution, etc., and achieve the effects of short processing time, low preparation cost and strong controllability

Active Publication Date: 2019-05-17
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are physical methods, chemical methods and biological methods for the degradation of vomitoxin, but due to the cost, environmental pollution, destruction of raw material nutrients and other reasons, it cannot be promoted efficiently

Method used

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  • A method for rapidly and effectively degrading deoxynivalenol in grains

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Example 1: Degradation of toxins in food by ozone water

[0027] Pour the contaminated grain material into the container, mix the grain material with water at a ratio of 1:5, the pH of the material liquid is 8.2-8.5, and let it stand in the container for 10 minutes to soak. For example, take 100g of corn and add 500ml of water to control the pH of the feed solution to 8.2-8.5.

[0028] (1) Formation of ozone water system

[0029] In an open and ventilated environment, turn on the ozone generator, pre-discharge the leather tube connected to the gas outlet of the generator for 1 to 2 minutes under the exhaust system device, and then pass the ozone into the soaked material liquid of Example 1, Maintain the ozone concentration in the aqueous solution at 50mg / L. Ozone is unstable in water, and the reduction reaction occurs all the time, producing very active and strong oxidizing monatomic oxygen (O), which decomposes bacteria, microbial organic substances and toxins in wat...

Embodiment 2

[0035] Embodiment 2: Absorption treatment of ozone waste gas

[0036] Ozone gas is a harmful gas with a concentration of 6.25×10 -6 mol / L (0.3mg / L) will irritate and damage mucous membrane tissues such as eyes and respiratory system, have negative effects on human health, and cause damage to the environment. If the residual ozone gas in the degradation reaction is not treated, it will overflow into the air. The design is to discharge the residual ozone gas from the experiment through the catheter through the sodium thiosulfate solution. The sodium thiosulfate solution can absorb the ozone gas instead of Will pollute the environment. A small amount of ozone remaining in the grain will be decomposed into oxygen, which will not cause harm to the environment, and is an environmentally friendly and non-hazardous degradation method. The process is: 3Na 2 S 2 o 3 +4O 3 +3H 2 O=6NaHSO 4 .

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Abstract

The invention discloses and relates to a method for quickly and effectively degrading deoxynivalenol in food grains, and belongs to the technical field of food safety. The method disclosed by the invention comprises the following steps of (1) pouring polluted food grain raw materials in a container, adding water according to the ratio of the food grain raw materials to the water being (1:5) to (1:6) for soaking the food grain raw materials, and then inletting ozone gas to form an ozone water system for a reaction, wherein the ozone concentration is 50mg / L; and (2) enabling residual ozone gas after the reaction to pass through a sodium thiosulfate solution through a pipeline, wherein the sodium thiosulfate solution can absorb the ozone gas so that environment pollution cannot be caused. According to the method disclosed by the invention, vomitoxin can be degraded by ozone water, the method is simple, the vomitoxin can be quickly, safely and effectively degraded, and the degradation rate can reach 80% or above.

Description

technical field [0001] The invention relates to a method for rapidly and effectively degrading deoxynivalenol in grains, belonging to the technical field of food safety. Background technique [0002] The total annual grain output in the world is about 2.5 billion tons, nearly 25% of the crops are polluted by mold, and about 2% of the crops lose their nutritional and economic value due to serious pollution, causing economic losses of hundreds of billions of dollars. 31 million tons of grain were contaminated. Common mold contaminations include Fusarium graminearum and Fusarium yellow. Fusarium graminearum is the main pathogen of wheat head blight in the natural environment, and produces deoxynivalenol during the process of growing and infecting crops. [0003] Vomitoxin (vomitoxin), also known as deoxynivalenol (deoxynivalenol, DON), is a secondary metabolite produced by Fusarium, etc. It is named because it can cause vomiting in pigs, and it is harmful to humans Function, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L5/20
CPCA23V2002/00A23V2250/128
Inventor 孙秀兰孙超孙嘉笛张银志纪剑
Owner JIANGNAN UNIV
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