Method for utilizing citriodora oil to extract waste liquid to prepare mosquito repellent

A technology of lemon eucalyptus leaf oil and repellent is applied in the field of preparing mosquito repellent by using lemon eucalyptus oil to extract waste liquid, which can solve the problems of harming human health and polluting the environment, so as to reduce harm to human health and reduce pollution , the effect of reducing environmental pollution

Inactive Publication Date: 2013-01-09
GUANGXI UNIVERSITY OF TECHNOLOGY
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AI Technical Summary

Problems solved by technology

For a long time, people have used a variety of chemical insecticides to control mosquitoes, but chemical insecticides not only pollute the environment but also damage human health while killing mosquitoes

Method used

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Embodiment Construction

[0032] The present invention utilizes lemon eucalyptus leaf oil to extract the waste liquid and prepares the method for mosquito repellent, comprises the following steps:

[0033] a. Mosquito repellent active ingredients extracted from lemon eucalyptus oil extraction waste p -menthane-3,8-diol (Chinese translation name: p-menthane-3,8-diol; abbreviation: menthane-diol):

[0034] (1) Collect the water phase distillate, the water phase distillate is the water phase distillate flowing out from the oil-water separator of the lemon eucalyptus oil extractor; the water phase distillate is a colorless transparent liquid , which is the remaining distilled water after the oil of lemon eucalyptus is separated, and part of the volatile components of lemon eucalyptus are dissolved in this water, and its main component is p -menthane-3,8-diol;

[0035] (2) Add sodium chloride or potassium chloride to the above-mentioned obtained aqueous phase distillate to make the water phase distillate ...

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Abstract

The invention provides a method for utilizing citriodora oil to extract waste liquid to prepare a mosquito repellent and relates to a method for preparing the mosquito repellent. The method comprises utilizing aqueous phase distillate flowing out of an oil-water separator of a citriodora oil extractor, enabling p-menthane-3, 8-diol in the aqueous phase distillate to be dissolved out by adding sodium chloride or potassium chloride, adding an organic solvent to perform extraction, then performing pressure-reducing distillation on the organic solvent to obtain light yellow oily liquid, freezing the light yellow oily liquid, dissolving out and crystallizing, filtering to obtain p-menthane-3, 8-diol, finally evenly mixing and dissolving 10%-50% of p-menthane-3, 8-diol, 5%-20% of propylene glycol, 10%-50% of 75% ethanol, 2%-10% of glycerol and 2%-10% of 1,3-butanediol according to mass ratio, and obtaining the mosquito repellent. The method is simple to operate, reduces environmental pollution and harm caused to the humans, and is low in cost and convenient to popularize and use.

Description

technical field [0001] The invention relates to a method for preparing a mosquito repellent, in particular to a method for preparing a mosquito repellent by using lemon eucalyptus leaf oil to extract waste liquid. Background technique [0002] The production of domestic lemon eucalyptus oil all adopts the traditional steam distillation process. The main principle of the steam distillation method: when the botanical aromatic raw materials are immersed in water and heated to boiling (such as water distillation) or steamed into the layer of aromatic raw materials (such as water distillation and direct steam distillation), due to boiling water or water The steam first has such an effect on the raw material, that is, the aromatic oil on the surface of the raw material tissue is in direct contact with the boiling water, thereby producing two steam partial pressures of water and oil, and the total pressure of this mixed steam is always equal to that used in the distillation pot If...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N31/06A01P17/00C07C35/08C07C29/76
Inventor 田玉红
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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