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Grain fumigation process

A process and food technology, applied in food preservation, food science, edible seed preservation, etc., can solve the problems of poisonous, strong irritating gas, damage to the central nervous system, etc., and achieve the effect of low pollution, simple operation and wide range

Inactive Publication Date: 2019-07-09
SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, this commitment will also be implemented in food disinfection; sulfuryl fluoride is a colorless, poisonous, and highly irritating gas at normal temperature and pressure, and its acute toxicity mainly damages the central nervous system and causes convulsions; in addition, it will also Deposits in human bones with cumulative poisoning risk

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: the preparation of fumigant

[0027] 1. Compounds of 1,2-dimethyl sulfide and phenyl fluorosulfonate:

[0028] Stir and mix 1,2-dimethyl sulfide and phenyl fluorosulfonate at room temperature according to the volume ratio of 2:3; it is abbreviated as fumigant A; the oral LD50 of mice is determined to be >500mg / Kg, which belongs to low poison.

[0029] 2. Compounds of 1,2-diethyl sulfide and vinyl sulfonyl fluoride:

[0030] Stir and mix 1,2-diethyl sulfide and vinyl sulfonyl fluoride evenly at room temperature according to the volume ratio of 2:1; abbreviated as fumigant B; the oral LD50 of mice is determined to be >500mg / Kg, which belongs to low toxicity .

[0031] 3. Compounds of 1-methyl-2-ethyl sulfide and m-chlorophenyl fluorosulfonate:

[0032] Stir and mix 1-methyl-2-ethyl sulfide and m-chlorophenyl fluorosulfonate at room temperature according to the volume ratio of 2:1; abbreviated as fumigant C; determine the oral LD50 of mice>500mg / Kg, bel...

Embodiment 2

[0045] Embodiment 2: grain fumigation experiment

[0046] Grain varieties: corn, rice, wheat, soybeans, soybeans, broad beans, potatoes, sweet potatoes, etc.

[0047] Diseases: Aspergillus, Penicillium, Trichoderma, Cladoderma cereus, Rhizopus, Trichoderma, Staphylococcus aureus, Escherichia coli, Bacillus megaterium, Bacillus subtilis and Pseudomonas fluorescens, black beetle, grain robber, etc.

[0048] Fumigant: Fumigant A

[0049] Fumigation method:

[0050] Put the fumigant and grain samples in the fumigation bin, close the fumigation box, control the temperature inside the fumigation box to 20°C, and after 36 hours of fumigation, depressurize the air for 1 hour, ventilate and replace the gas for 12 hours, and end the fumigation;

[0051] It is known by microscope inspection that no mold has grown on the grain samples after the above-mentioned fumigation treatment;

[0052] And it was detected and analyzed by gas chromatography and mass spectrometry (GC-Ms) that there ...

Embodiment 3

[0056] Embodiment 3: grain fumigation experiment

[0057] Grain varieties: corn, rice, wheat, soybeans, soybeans, broad beans, potatoes, sweet potatoes, etc.

[0058] Diseases: Aspergillus, Penicillium, Trichoderma, Cladoderma cereus, Rhizopus, Trichoderma, Staphylococcus aureus, Escherichia coli, Bacillus megaterium, Bacillus subtilis and Pseudomonas fluorescens, black beetle, grain beetle and Clothes fish etc.

[0059] Fumigant: Fumigant C

[0060] Put the fumigant and grain samples in the fumigation bin, close the fumigation box, control the temperature in the fumigation box to 25°C, and after 24 hours of fumigation, depressurize and pump for 48 hours, ventilate for 1 hour, and end the fumigation;

[0061] It is known by microscope inspection that no mold has grown on the grain samples after the above-mentioned fumigation treatment;

[0062]And by the detection and analysis of gas chromatography and mass spectrometry (GC-Ms), it is known that there is no fumigant residue...

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Abstract

The invention discloses a grain fumigation process which includes the steps: placing a fumigation agent into a grain elevator to fumigate gains for 1-72 hours at the temperature of 20-45 DEG C; performing pressure reducing and pumping for 1-72 hours; performing ventilation and air displacement for 1-72 hours to complete fumigation. The fumigation agent is mixture of a compound with a chemical structure as shown in a general formula I, a compound with a chemical structure as shown in a general formula II and a compound with a chemical structure as shown in a general formula III. Experimental results show that by the aid of the fumigation agent, common insects, mildew and diseases of the gains are safely and effectively controlled, environmental pollution is low, and the fumigation agent hasthe advantages that of green and environmental friendliness, the fumigation agent can treat various gains and various mildew, bacteria and injurious insects in the same fumigation environment once, the gains treated by the fumigation agent cannot generate insects, mildew and diseases when being placed for at least half a year or more in grain elevator environments or transportation conditions.

Description

technical field [0001] The invention relates to a grain fumigation process and belongs to the technical field of grain preservation. Background technique [0002] At present, my country's annual grain loss and waste is about 100 billion catties, which is roughly equivalent to the annual grain output of Heilongjiang Province, the largest grain-producing province in my country. According to estimates, the total loss and waste of my country's post-production grain storage, transportation, processing and other circulation links is about 70 billion catties, of which only the grain storage link in the circulation process loses about 40 billion catties. The food loss caused by post-production mold in our country cannot be underestimated. Fungal and toxin pollution poses a serious threat to my country's food security. According to Liu Yang, a researcher at the Institute of Agricultural Products Processing of the Chinese Academy of Agricultural Sciences, "Our country invests hundred...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B9/18A23B9/22
CPCA23B9/18A23B9/22
Inventor 姜标张琛陶黎明
Owner SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
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