Preparation method and application of carvone

A caraway ketone and chromatography technology, which is applied to the preparation field of caraway ketone, can solve problems such as environmental and human health effects, and achieve the effects of low production cost, low cost and simple production process.

Inactive Publication Date: 2017-02-01
CHINA TOBACCO GUANGXI IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphine (aluminum phosphide) fumigation is the most common method of conventional pest control in tobacco bins, but long-term use of phosphine (aluminum phosphide) will have certain impacts on the environment and human health

Method used

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  • Preparation method and application of carvone
  • Preparation method and application of carvone
  • Preparation method and application of carvone

Examples

Experimental program
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Effect test

Embodiment 1

[0022] 1) Preparation by steam distillation: take 1.0kg of Tibetan fennel, crush it, place it in a volatile oil extractor, extract it by steam distillation for 4 hours, and dry it with anhydrous sodium sulfate to obtain 38.4ml of Tibetan fennel oil, which is stored in the fresh-keeping room of the refrigerator 4 ℃ for later use.

[0023] 2) Supercritical CO 2 Extraction process preparation: Take 1.0kg of Tibetan fennel, crush it and put it in the extraction kettle, first preheat the extraction kettle and the separation kettle, cool the storage tank, and when the predetermined temperature is reached, turn on the CO 2 The gas cylinder is supplied with air, and the high-pressure pump is turned on to increase the pressure. When the temperature and pressure reach the predetermined value, the circular extraction starts. During the extraction, the separation pressure is fixed at 10.0MPa, the separation temperature is 40°C, and the CO 2 The flow rate is 60L / h, and the material is ext...

Embodiment 2

[0026] 1) Preparation by steam distillation: Take 1.0kg of Tibetan fennel, crush it, place it in a volatile oil extractor, extract it by steam distillation for 5 hours, and dry it with anhydrous sodium sulfate to obtain 39.1ml of Tibetan fennel oil, which is stored in the refrigerator Store in the fresh-keeping room at 4°C for later use.

[0027] 2) Supercritical CO 2 Extraction process preparation: Take 1.0kg of Tibetan fennel, crush it and put it in the extraction kettle, first preheat the extraction kettle and the separation kettle, cool the storage tank, and when the predetermined temperature is reached, turn on the CO 2 The gas cylinder is supplied with air, and the high-pressure pump is turned on to increase the pressure. When the temperature and pressure reach the predetermined value, the circular extraction starts. During extraction, the separation pressure is fixed at 5.0MPa, the separation temperature is 35°C, and CO 2 The flow rate is 40L / h, and the material is ext...

Embodiment 3

[0030] 1) Preparation by steam distillation: take 1.0kg of Tibetan fennel, crush it, place it in a volatile oil extractor, extract it by steam distillation for 3 hours, and dry it with anhydrous sodium sulfate to obtain 37.8ml of Tibetan fennel oil, which is stored in the refrigerator Store in the fresh-keeping room at 4°C for later use.

[0031] 2) Supercritical CO 2 Extraction process preparation: Take 1.0kg of Tibetan fennel, crush it and put it in the extraction kettle, first preheat the extraction kettle and the separation kettle, cool the storage tank, and when the predetermined temperature is reached, turn on the CO 2 The gas cylinder is supplied with air, and the high-pressure pump is turned on to increase the pressure. When the temperature and pressure reach the predetermined value, the circular extraction starts. During the extraction, the separation pressure is fixed at 30MPa, the separation temperature is 50°C, and the CO 2 The flow rate is 80L / h, and the material...

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Abstract

The invention relates to a preparation method for carvone and application of carvone to prevention and treatment of insects attacking stored tobacco. The preparation method provided by the invention comprises the following steps: with caraway as a raw material, extracting caraway oil at first and then separating carvone from the caraway oil. The preparation method is rich in raw materials, simple in production process and low in production cost. Carvone is applied to prevention and treatment of insects attacking stored tobacco, exerts good effect on stifling, contact killing and repelling of insects attacking stored tobacco and can be used for development of green biopesticides.

Description

technical field [0001] The invention relates to the field of tobacco pest control drugs, in particular to a preparation method and application of carvone. Background technique [0002] Tobacco leaves are vulnerable to pests during storage, among which Lasioderma serricorne Fabricius is the dominant species, and Tribolium castaneum Herbst is the second dominant species. CORESTA estimates that tobacco beetles cause about 1% of stored tobacco losses per year. In the 1990s, my country conducted a survey on the damage caused by pests in stored tobacco. The annual mass loss rate due to pests was about 1.64%, and the quality loss caused by tobacco beetles was far greater than that caused by other stored tobacco pests. Phosphine (aluminum phosphide) fumigation is the most common method of routine pest control in tobacco bins, but long-term use of phosphine (aluminum phosphide) will have certain impacts on the environment and human health. Therefore, in April 2010, the U.S. Environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/79C07C49/647A01P7/04
CPCC07C45/79C07C49/647Y02P20/54
Inventor 吴彦张文娟李桂湘王成芳刘鸿杜树山李志华刘军唐毓新张勇杨凯刘绍华黄东业白家峰
Owner CHINA TOBACCO GUANGXI IND
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