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Method for preparing cockroach repellent tablet by extracting xanthoxylin with carbon dioxide supercritical method

A kind of Zanthoxylum bungeanum essential oil, supercritical technology, applied in botany equipment and methods, pest repellent, animal repellent, etc., can solve the problems that can not truly reflect the repellency of cockroaches to drugs, and achieve low cost and applicable The effect of various environments and simple preparation process

Inactive Publication Date: 2015-01-28
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the reasons may be that most of the current research uses the filter paper immersion method, which tests the short-term response of cockroaches to direct stimulation of drugs, which has serious flaws and cannot truly reflect the repellency of cockroaches to drugs.

Method used

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  • Method for preparing cockroach repellent tablet by extracting xanthoxylin with carbon dioxide supercritical method
  • Method for preparing cockroach repellent tablet by extracting xanthoxylin with carbon dioxide supercritical method
  • Method for preparing cockroach repellent tablet by extracting xanthoxylin with carbon dioxide supercritical method

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Experimental program
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Effect test

Embodiment 1

[0021] formula

[0022]

[0023] preparation

[0024] 1. Put 100g of Zanthoxylum bungeanum in the refrigerator for 8 hours, crush it with a pulverizer, pass through a 200-mesh sieve, put it into an extraction kettle for extraction, and obtain the Zanthoxylum bungeanum essential oil extract for later use.

[0025] The extraction conditions are: extraction pressure 30MPa, extraction temperature 38°C, extraction time 150 minutes.

[0026] 2. According to the formula, firstly mix the absolute ethanol and Tween 80 evenly, then add the extract of Zanthoxylum bungeanum essential oil, and then make the Zanthoxylum bungeanum essential oil dispersion after mixing evenly.

[0027] 3. Add milliliters of distilled water to the agar according to the recipe, heat to dissolve the agar completely, and when the agar solution is cooled to 45°C, take the Zanthoxylum essential oil dispersion prepared in step 2 and add it to the agar solution, and stir while adding to disperse the Zanthoxylum e...

Embodiment 2

[0032]

[0033] preparation

[0034] 1. Put 100g of Zanthoxylum bungeanum in the refrigerator for 8 hours, crush it with a pulverizer, pass through a 200-mesh sieve, put it into an extraction kettle for extraction, and obtain the Zanthoxylum bungeanum essential oil extract for later use.

[0035] The extraction conditions are: extraction pressure 40MPa, extraction temperature 44°C, extraction time 130 minutes.

[0036] 2. According to the formula, firstly mix the absolute ethanol and Tween 80 evenly, then add the extract of Zanthoxylum bungeanum essential oil, and then make the Zanthoxylum bungeanum essential oil dispersion after mixing evenly.

[0037] 3. Add milliliters of distilled water to the agar according to the formula, and heat to completely dissolve the agar. When the agar solution is cooled to 45°C, add the essential oil dispersion prepared in step 2 into the agar solution, and stir while adding, so that the essential oil can repel insects and disperse. Mix the ...

Embodiment 3

[0042] formula

[0043]

[0044] preparation

[0045] 1. Put the Chinese prickly ash in the refrigerator for 10 hours, then crush it with a pulverizer, pass through a 200-mesh sieve, put it into an extraction kettle for extraction, and obtain the Chinese prickly ash essential oil extract for later use.

[0046] The extraction conditions described are: extraction pressure 35Mpa, extraction temperature 40°C, CO 2 The flow rate is 20kg / h, and the extraction time is 120 minutes.

[0047] 2. Firstly mix the absolute ethanol and Tween 80 evenly, then add the reserved Zanthoxylum bungeanum essential oil extract, mix well to make the Zanthoxylum bungeanum essential oil dispersion.

[0048] 3. Add agar into distilled water at a ratio of 1 g: 30 ml of distilled water, heat to dissolve the agar completely, and when the agar solution is cooled to 35-50°C, add the essential oil dispersion prepared in step 2 into the agar solution, and Stir while heating, so that the essential oil ins...

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Abstract

The invention relates to a method for preparing a cockroach repellent tablet by extracting xanthoxylin with a carbon dioxide supercritical method. The cockroach repellent tablet is prepared from the following components: 10 to 15 ml of xanthoxylin extracting liquid, 300 to 400 ml of absolute alcohol, 80 to 100 ml of tween and 100 to 150 g of agar. The method comprises the steps of: crushing pepper by a crusher, sieving through a 200mesh sieve, and placing the crushed pepper into an extraction kettle for extraction to obtain the xanthoxylin extracting liquid for later use; mixing absolute alcohol and tween 80 uniformly, then adding the xanthoxylin extracting liquid to obtain the xanthoxylin dispersion liquid; adding the agar into distilled water, heating for dissolution, cooling, adding the xanthoxylin dispersion liquid prepared in step 2 into the prepared agar solution, mixing uniformly, then slowly pouring into a square mold, naturally cooling for solidification, and cutting to prepare tablets; and applying gum to one side of each tablet to prepare the cockroach repellent tablet. The method for preparing the cockroach repellent tablet by extracting xanthoxylin with the carbon dioxide supercritical method, disclosed by the invention, is simple in preparation process, low in cost, and suitable to various environments, and has the repellent rate reaching 88 to 100% to American cockroaches and German cockroaches.

Description

technical field [0001] The present invention relates to a CO 2 The invention discloses a method for extracting prickly ash essential oil by a supercritical method to prepare an insect-repelling tablet with the function of repelling cockroaches, belonging to the technical field of preparation of anthelmintic drugs. Background technique [0002] Cockroach belongs to Insecta, Blattata, is a class of insects with a long history, and original cockroach appeared on the earth in the Silurian Period about 400,000,000 years ago. At present, there are mainly Periplaneta americana, Blattella germanica, Blattella black breast, Periplaneta australis and Periplaneta japonica that are closely related to human life. The most common ones in China are Periplaneta americana and Blattella germanica. [0003] Cockroaches not only spread diseases, but also often bite other items, such as cotton and wool products, leather products, paper, books, etc. Therefore cockroach is not only a kind of san...

Claims

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Application Information

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IPC IPC(8): A01N65/36A01N25/34A01P17/00
CPCY02A50/30
Inventor 王正朝肖义军林尧林雅红林丽红
Owner FUJIAN NORMAL UNIV
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