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Method for degrading deoxynivalenol in food grains through ClO2

A technology of deoxynivalenol and food, which is applied in the direction of food ingredients as antimicrobial preservation, application, food preservation, etc., can solve the problems of human harm, environmental pollution, and large dose required, and achieve the digestion rate Fast, simple operation method, easy to prepare the effect

Active Publication Date: 2016-11-09
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, it has been reported that ClO 2 Degradation of aflatoxin in corn, but there are problems of large dosage and large environmental pollution
and high concentration of ClO 2 It is harmful to the human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Degradation of toxins in food by chlorine dioxide water

[0033] Pour the contaminated grain material into the container, mix the grain material with water at a ratio of 1:4, the pH of the material liquid is 2-3, and let it stand in the container for 10 minutes to soak.

[0034] (1)ClO 2 water system formation

[0035] In the fume hood exhaust system, after chlorine dioxide is added to the feed liquid, ClO 2 It is unstable in water, and the redox reaction occurs immediately to produce very active and strong oxidizing monatomic oxygen ClO 2 - , while producing, decompose bacteria, microbial organic substances and toxins in water. The process is: ClO 2 - : ClO 2 +e=ClO 2 - ;ClO 2 +4H + 4e - = Cl - +2H 2 O.

[0036] (2) Chlorine dioxide water system degrades the ClO formed by vomitoxin in polluted grain 2 Water system acts on polluted grain, ClO 2 Initial ClO in water system 2 Concentration is 0.8g / L, reacts 120min under light-proof airtight cond...

Embodiment 2

[0039] Example 2: Degradation of toxins in food by chlorine dioxide water

[0040] Pour the contaminated grain material into the container, mix the grain material with water at a ratio of 1:7, the pH of the material liquid is 2-3, and let it stand in the container for 10 minutes to soak.

[0041] (1)ClO 2 water system formation

[0042] In the fume hood exhaust system, after chlorine dioxide is added to the feed liquid, ClO 2 It is unstable in water, and the redox reaction occurs immediately to produce very active and strong oxidizing monatomic oxygen ClO 2 - , while producing, decompose bacteria, microbial organic substances and toxins in water. The process is: ClO 2 - : ClO 2 +e=ClO 2 - ;ClO 2 +4H + 4e - = Cl - +2H 2 O.

[0043] (2) Chlorine dioxide water system degrades the ClO formed by vomitoxin in polluted grain 2 Water system acts on polluted grain, ClO 2 Initial ClO in water system 2 The concentration is 1g / L, and the reaction is carried out for 60min...

Embodiment 3

[0047] Example 3: Absorption of waste gas and precipitation treatment of residual chlorine ions

[0048] ClO 2 With strong oxidizing properties, it will be explosive if the volume concentration in the air exceeds 10%, but its aqueous solution is very safe. Residual ClO in the degradation reaction 2 If the gas is not treated, it will overflow into the air. The design is to remove the remaining ClO from the experiment 2 The gas is discharged from the conduit after being treated with sodium thiosulfate solution, which can convert ClO 2 Gas absorption treatment without polluting the environment. A small amount of ClO remaining in grain 2 It will be decomposed into oxygen, 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 . Because the waste liquid contains a high concentration of residual chlorine ions, it also needs to be treated before being discharged,...

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PUM

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Abstract

The invention discloses a method for degrading deoxynivalenol in food grains through ClO2, 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 (1:4) to (1:7) for soaking the food grain raw materials, and then inletting ClO2 gas to form a ClO2 water system for a reaction, wherein the ClO2 concentration is 0.8-1g / kg; and (2) enabling residual ClO2 gas after the reaction to pass through a sodium thiosulfate solution through a pipeline, wherein the sodium thiosulfate solution can absorb the ClO2 gas so that environment pollution cannot be caused, waste liquid also drained after being treated, and environment is not polluted. According to the method disclosed by the invention, the ClO2 water system with a high oxidizing property is adopted, so that DON toxins in the polluted food grains can be safely and effectively degraded, the method is simple, the degradation rate can reach 70%, three kinds of polluted food grains are degrated, and the degradation rate of the DON toxins is between 60-70%.

Description

technical field [0001] The present invention relates to a kind of utilization ClO 2 The invention discloses a method for 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. It infects crops and produces deoxynivalenol during the growth process. [0003] Deoxynivalenol (DON), also known as vomitoxin, is a secondary metabolite produced by Fusarium, etc. It is named because it can cause vomiting in pigs, and it is harmful to humans Effect, ...

Claims

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Application Information

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IPC IPC(8): A23L5/20A23B9/30
CPCA23B9/30A23V2002/00A23V2200/10
Inventor 孙秀兰孙超纪剑蒋卉孙嘉笛张银志
Owner JIANGNAN UNIV
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