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Method for lowering imidacloprid and acetamiprid residue in tobacco

A technology of imidacloprid and acetamiprid, which is applied in the field of electron accelerator irradiation treatment, can solve the problems of residual imidacloprid and acetamiprid, etc., and achieve the effects of improving the quality and safety of tobacco, improving smoking safety, and strong operation safety

Active Publication Date: 2012-07-18
河南省科学院同位素研究所有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method capable of reducing imidacloprid and acetamiprid residues in tobacco, provide the best irradiation process parameters for the degradation of imidacloprid and acetamiprid residues in tobacco, and solve the problem of residual imidacloprid in tobacco in the prior art. Problems with acetamiprid

Method used

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  • Method for lowering imidacloprid and acetamiprid residue in tobacco
  • Method for lowering imidacloprid and acetamiprid residue in tobacco
  • Method for lowering imidacloprid and acetamiprid residue in tobacco

Examples

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Effect test

Embodiment 1

[0023] 6 boxes of re-cured tobacco leaves packed in standard boxes were taken randomly, the carton length x width x height was 113.6cm x 72cm x 72.5cm, and each box weighed 200kg. Prepare the test pesticide into an aqueous solution with a concentration of 50mg / L, spray it evenly on the tobacco leaves, so that the tobacco leaves contain a certain concentration of pesticide residues, and then pack them into 6 packing boxes after drying. Place the packaging box packed with tobacco on the conveying device, and the conveying speed of the conveying device is 0.02-0.3m / s; the tobacco placed on the conveying device is irradiated by the electron beam / X-ray generated by the electron accelerator, and the said The energy of the electron accelerator is 5-10 MeV, the beam current is 0.3-20 mA, the beam power is 10-20 kW, the maximum scanning width is 100 cm, and the scanning frequency is 5-15 Hz. The second time is transmitted by the transmission device through the scanning window of the el...

Embodiment 2

[0029] According to the steps similar to the above-mentioned Example 1, 300 kg of air-dried tobacco leaves were randomly taken, and the test pesticide was configured into an aqueous solution with a concentration of 50 mg / L, which was evenly sprayed on the tobacco leaves so that the tobacco leaves contained a certain concentration of pesticide residues, and then divided after drying. Pack. Pack one box per 50kg, a total of 6 boxes. After being sealed and packaged in a corrugated box with a length x width x height of 70cm x 60cm x 50cm, the tobacco leaves are irradiated with electron beams at doses of 1 and 7kGy respectively. Three boxes were processed, and after irradiation, imidacloprid and acetamiprid residues in tobacco were detected according to the provisions of the standard GB / T20769-2008, and the corresponding non-irradiated tobacco leaf samples were used as controls, and smoking evaluation was carried out. The degradation effect of pesticide is represented by degradatio...

Embodiment 3

[0035] According to the steps similar to the above-mentioned Example 1, 300 kg of first-cured tobacco leaves are randomly taken, and the test pesticide is configured into an aqueous solution with a concentration of 50 mg / L, which is evenly sprayed on the tobacco leaves so that the tobacco leaves contain a certain concentration of pesticide residues, and after drying Subpackage. Pack one box per 50kg, a total of 6 boxes. After being sealed and packaged in a corrugated box with a length x width x height of 70cm x 60cm x 50cm, the tobacco leaves are irradiated with electron beams at doses of 1 and 7kGy respectively. Three cases were processed, and after irradiation, the residues of imidacloprid and acetamiprid in cigarettes were detected according to the provisions of the standard GB / T20769-2008, and the corresponding unirradiated cigarette samples were used as controls, and smoking evaluation was carried out. The degradation effect of pesticide is represented by degradation rate...

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Abstract

The invention discloses a method for lowering imidacloprid and acetamiprid residue in tobacco, which comprises the following steps: packaging tobacco with a carton, wherein the accumulation thickness is 26-72cm, and the accumulation density is 0.20-0.34g / cm<3>; putting the tobacco cartons on a conveying device at a conveying speed being 0.02-0.3m / s; irradiating the tobacco cartons by an electronic beam or X ray generated by an electron accelerator, wherein the energy of the electron accelerator is 5-10MeV, the beam is 0.3-20mA, the beam power is 10-20kW, the maximum scanning width is 100cm, the scanning frequency is 5-15Hz, the radiation amount is 1-10kGy, and the working temperature is set to be 5-35DEG C; causing the tobacco cartons to pass through a scanning window of the electron accelerator to be irradiated, wherein the center of each tobacco carton is far away from the scanning window of the electron accelerator for 40-60cm during irradiation, and the environment humidity during working is limited to be less than or equal to 60%.

Description

technical field [0001] The invention belongs to the application field of irradiation technology, and also belongs to the field of tobacco processing quality and safety control, in particular to an electron accelerator irradiation treatment technology for reducing imidacloprid and acetamiprid residues in tobacco. Background technique [0002] The application of chemical pesticides is an important means to prevent and control tobacco diseases, insects and weeds. Acetamiprid and imidacloprid are pesticides that are widely used in tobacco production in my country (recommended by China Tobacco Corporation in 2011). Therefore, these two pesticides have become the most common types of pesticide residues in tobacco. Although it can effectively prevent and control aphids in tobacco and improve the quality of tobacco leaves, the accumulation of residual poison in tobacco leaves will reduce the safety of cigarettes and negatively affect the health of smokers. In order to improve the sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B15/22
Inventor 陈云堂王娟娟田占军徐世臻范家霖袁红星吕晓华杜阅光郭东权张建伟杨保安李湘张志坚蔡恒刘江豫
Owner 河南省科学院同位素研究所有限责任公司
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