Rosemary leaf mosquito-repelling air freshener and preparation method

Abstract

The invention discloses a rosemary leaf mosquito-repelling air freshener. The air fresher comprises rosemary leaf extraction liquid, lemon essential oil, menthol, citronella essential oil and the like. The preparation method comprises the steps of A), uniformly mixing rosemary leaves, ethanol and distilled water by weight and placing the mixture into a distillation still; B), heating the distillation still to 50-100 DEG C, keeping the steam pressure inside the distillation still to be 0.01-0.05 MPa and collecting condensing liquid to obtain a rosemary leaf extraction liquid crude product; C), subjecting the rosemary leaf extraction liquid crude product to reduced pressure distillation to obtain a rosemary leaf extract concentrated solution; and D), by weight, dissolving the lemon essential oil, the menthol and the citronella essential oil in absolute ethyl alcohol, then adding 50-80 parts of the rosemary leaf extract concentrated solution obtained in the step C) and 5-30 parts of water and fixing uniformly to obtain the rosemary leaf mosquito-repelling air freshener. The rosemary leaf mosquito-repelling air freshener is low in cost, excellent in mosquito-repelling effect, fresh in smell and environment-friendly.

Description

technical field

[0001] The invention relates to a rosemary leaf mosquito repellent air freshener prepared by using the natural rosemary leaf extract concentrate, which belongs to the technical field of comprehensive utilization of agricultural and forestry products; the invention also relates to the method of the rosemary leaf mosquito repellent air freshener Preparation method and use. Background technique

[0002] In order to avoid mosquitoes, mosquito-repellent incense produced from pyrethrum resin is widely used, but relevant tests have proved that it can cause obvious damage to the nervous system and hematopoietic system of the human body, so extra care should be taken when using it.

[0003] At present, it has been found that many plant essential oils have certain mosquito repelling effects.

[0004] Chinese patent 200910154435.0 discloses the application of a kind of Torreya essential oil in mosquito repellent.

[0005] Chinese patent 200610042582.5 discloses a plan...

Examples

Embodiment 1

[0035] A rosemary leaf mosquito repellent air freshener, which comprises by weight: 60 parts of rosemary leaf extract concentrate, 10 parts of lemon essential oil, 5 parts of menthol, 5 parts of citronella essential oil, 10 parts of ethanol, 10 parts of distilled water, 0.5 parts of Tween 80 solubilizer.

[0036] Its preparation method is:

[0037] A. take by weighing 15kg rosemary leaf, put into 200L stainless steel distillation kettle, add 100L distilled water and 50L mass concentration and be the mixed solution of 94% ethanol, soak wherein;

[0038] B. Start the electronic boiler, when the steam pressure of the boiler reaches 0.05MPa, open the valve to feed steam into the still, adjust the steam valve to control the steam pressure in the still at 0.05MPa, after half an hour, the temperature in the still reaches 95°C, open the condensation The condensed water switch on the collector, and then adjust the steam valve to control the steam pressure in the still to 0.03MPa, coll...

Embodiment 2

[0048] A rosemary leaf mosquito repelling air freshener, which comprises by weight: 70 parts of rosemary leaf extract, 20 parts of lemon essential oil, 10 parts of menthol, 10 parts of citronella essential oil, 20 parts of ethanol, 20 parts of distilled water 1 part, 1 part of Span 60 solubilizer.

[0049] The camphor leaf mosquito repellent air freshener is prepared in the same manner as in Example 1 according to the ratio of the above-mentioned components.

[0050] The mosquito repellent test of formula 2 of the mosquito repellent composition in this example was carried out by using the test method in Example 1, and the average mosquito repellent rate reached 99.00%.

Embodiment 3

[0052] A rosemary leaf mosquito repellent air freshener, which comprises by weight: 80 parts of rosemary leaf extract concentrate, 10 parts of lemon essential oil, 10 parts of menthol, 10 parts of citronella essential oil, 10 parts of ethanol, 20 parts of distilled water, 0.8 parts of Tween 60 solubilizer.

[0053] The camphor leaf mosquito repellent air freshener is prepared in the same manner as in Example 1 according to the ratio of the above-mentioned components.

[0054] Using the test method in Example 1, the mosquito repellent composition formula 3 of this example was subjected to a mosquito repellent test, and the average mosquito repellent rate reached 98.33%.

technical field

[0001] The invention relates to a rosemary leaf mosquito repellent air freshener prepared by using the natural rosemary leaf extract concentrate, which belongs to the technical field of comprehensive utilization of agricultural and forestry products; the invention also relates to the method of the rosemary leaf mosquito repellent air freshener Preparation method and use. Background technique

[0002] In order to avoid mosquitoes, mosquito-repellent incense produced from pyrethrum resin is widely used, but relevant tests have proved that it can cause obvious damage to the nervous system and hematopoietic system of the human body, so extra care should be taken when using it.

[0003] At present, it has been found that many plant essential oils have certain mosquito repelling effects.

[0004] Chinese patent 200910154435.0 discloses the application of a kind of Torreya essential oil in mosquito repellent.

[0005] Chinese patent 200610042582.5 discloses a plan...

Examples

Embodiment 1

[0035] A rosemary leaf mosquito repellent air freshener, which comprises by weight: 60 parts of rosemary leaf extract concentrate, 10 parts of lemon essential oil, 5 parts of menthol, 5 parts of citronella essential oil, 10 parts of ethanol, 10 parts of distilled water, 0.5 parts of Tween 80 solubilizer.

[0036] Its preparation method is:

[0037] A. take by weighing 15kg rosemary leaf, put into 200L stainless steel distillation kettle, add 100L distilled water and 50L mass concentration and be the mixed solution of 94% ethanol, soak wherein;

[0038] B. Start the electronic boiler, when the steam pressure of the boiler reaches 0.05MPa, open the valve to feed steam into the still, adjust the steam valve to control the steam pressure in the still at 0.05MPa, after half an hour, the temperature in the still reaches 95°C, open the condensation The condensed water switch on the collector, and then adjust the steam valve to control the steam pressure in the still to 0.03MPa, coll...

Embodiment 2

[0048] A rosemary leaf mosquito repelling air freshener, which comprises by weight: 70 parts of rosemary leaf extract, 20 parts of lemon essential oil, 10 parts of menthol, 10 parts of citronella essential oil, 20 parts of ethanol, 20 parts of distilled water 1 part, 1 part of Span 60 solubilizer.

[0049] The camphor leaf mosquito repellent air freshener is prepared in the same manner as in Example 1 according to the ratio of the above-mentioned components.

[0050] The mosquito repellent test of formula 2 of the mosquito repellent composition in this example was carried out by using the test method in Example 1, and the average mosquito repellent rate reached 99.00%.

Embodiment 3

[0052] A rosemary leaf mosquito repellent air freshener, which comprises by weight: 80 parts of rosemary leaf extract concentrate, 10 parts of lemon essential oil, 10 parts of menthol, 10 parts of citronella essential oil, 10 parts of ethanol, 20 parts of distilled water, 0.8 parts of Tween 60 solubilizer.

[0053] The camphor leaf mosquito repellent air freshener is prepared in the same manner as in Example 1 according to the ratio of the above-mentioned components.

[0054] Using the test method in Example 1, the mosquito repellent composition formula 3 of this example was subjected to a mosquito repellent test, and the average mosquito repellent rate reached 98.33%.