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Preparation method for estragole and application of estragole

A technology of wormwood and tobacco, which is applied in the field of preparation of wormwood, can solve problems such as the impact on the environment and human health, and achieve the effect of low production cost and simple production process

Active Publication Date: 2015-12-16
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 for estragole and application of estragole
  • Preparation method for estragole and application of estragole
  • Preparation method for estragole and application of estragole

Examples

Experimental program
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Effect test

Embodiment 1

[0021] 1) Preparation by steam distillation: take 1.0kg of dried mature pericarp of green pepper, crush it, put it in a volatile oil extractor, extract it by steam distillation for 6 hours, and dry it with anhydrous sodium sulfate to obtain 43.8ml of green pepper oil, which is stored in the refrigerator Store in the fresh-keeping room at 4°C for later use.

[0022] Supercritical CO 2 Extraction process preparation: Take 1.0kg of dry and mature peel of green peppercorns, crush it and place 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 ...

Embodiment 2

[0025] 1) Preparation by steam distillation: take 1.0 kg of dried mature pericarp of green pepper, 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 42.9 ml of green pepper oil, which is Store in refrigerator at 4°C for later use.

[0026] Supercritical CO 2 Extraction process preparation: Take 1.0kg of dry and mature peel of green peppercorns, crush it and place 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 mate...

Embodiment 3

[0029] 1) Preparation by steam distillation: take 1.0 kg of dried mature pericarp of green pepper, crush it, place it in a volatile oil extractor, extract it by steam distillation for 7 hours, and dry it with anhydrous sodium sulfate to obtain 44.2 ml of green pepper oil, which is Store in refrigerator at 4°C for later use.

[0030] Supercritical CO 2 Extraction process preparation: Take 1.0kg of dry and mature peel of green peppercorns, crush it and place 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 55°C, and the CO 2 The flow rate is 80L / h, the c...

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Abstract

The invention relates to a preparation method for estragole and application of the estragole to prevention of tobacco stored grain insects. The preparation method comprises the following specific steps: extracting green zanthoxylum oil from green zanthoxylum serving as a raw material, and then separating the estragole from the green zanthoxylum oil. The raw material for the method is rich, a production process is simple, and the production cost is low. The application of the estragole to the prevention of the tobacco stored grain insects has better fumigating, contacting toxicity and repelling effects on the tobacco stored grain insects, and the estragole is expected to be developed into a green biopesticide.

Description

technical field [0001] The invention relates to the field of tobacco pest control drugs, in particular to a preparation method of wormwood and its application. 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. En...

Claims

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Application Information

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IPC IPC(8): C07C43/215C07C41/34A01P7/04A01P17/00
CPCC07C41/34C07C43/215Y02P20/54
Inventor 吴彦张文娟韦建玉王成芳孙建生杜树山邓宾玲黄东业杨凯田兆福李小兰张纪利王萍娟白家峰
Owner CHINA TOBACCO GUANGXI IND
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