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Schizonepeta extractive and application thereof

An extract and a technology for Nepeta, applied to the Nepeta extract and its preparation process and application fields, can solve the problems of general insect resistance, low insect resistance, and difficulty in practical promotion and application, and achieve stable insect resistance. Easy to popularize and apply, excellent anti-insect effect

Inactive Publication Date: 2015-06-24
CHENGDU NEWSUN CROPSCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the volatile oil or extract of Nepeta nepeta is a pure natural substance, as a botanical pesticide and product, it usually has advantages in safety, but the problem that plagues its popularization and application is that its anti-insect effect is very general, especially compared with many existing pesticides. Compared with its insect-resistant effect is much lower, so it is difficult to practically popularize and apply

Method used

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  • Schizonepeta extractive and application thereof
  • Schizonepeta extractive and application thereof
  • Schizonepeta extractive and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1 Preparation of the water extract of Schizonepeta (volatile oil) of the present invention

[0034] Weigh 200kg of Schizonepeta medicinal material, put it into a 3000-type multifunctional extraction tank (available from Zhejiang Senli Machinery Technology Co., Ltd.), add 1600L of water, and after soaking for 1.5 hours, turn on the interlayer steam to heat up to 80°C for extraction, and collect at the outlet of the extraction tank After the evaporated and condensed effluent was collected for 1.5 hours, 1200 L of water was added, and the extraction was continued at 80° C. and the effluent was collected for 1.5 hours. The collected effluent was placed in a stainless steel barrel with a double-layer clean plastic bag, kept at 80°C for 30 minutes, and then naturally cooled to room temperature for 12 hours. Then, discard the water phase (lower layer) as much as possible, collect the oil phase (upper layer), filter and stir evenly, and add an appropriate amount of...

Embodiment 2

[0036] Embodiment 2 Preparation of the ethanol extract of Schizonepeta (volatile oil) of the present invention

[0037] Weigh 200kg of Schizonepeta medicinal material, put it into a 3000-type multifunctional extraction tank (available from Zhejiang Senli Machinery Technology Co., Ltd.), add 1600L of 95% (V / V) ethanol, soak for 1.5 hours and then turn on the interlayer steam to raise the temperature to 80 Extract at ℃, collect the evaporated and condensed effluent at the outlet of the extraction tank, after collecting for 1.5 hours, add 1200L of 95% (V / V) ethanol, continue the extraction at 80°C and collect the effluent for 1.5 hours. The collected effluent was placed in a stainless steel barrel with a double-layer clean plastic bag, kept at 80°C for 30 minutes, and then naturally cooled to room temperature for 12 hours. Then, discard the alcohol phase (lower layer) as much as possible, collect the oil phase (upper layer), filter and stir evenly, add an appropriate amount of ...

Embodiment 3

[0039] Example 3 Field test of Nepeta extract of the present invention

[0040] In the loofah greenhouse in the farmland of Pujiang County, Sichuan Province, the spraying test was carried out in August 2014 (the loofah red spider blooming period), and the actual performance of the preventive effect of the Nepeta extract of the present invention and the control pesticide was investigated.

[0041] 1. Test pesticides

[0042] Group 1 (positive control): Nongwei (0.5%), available from Hebei Fuji Biotechnology Co., Ltd.;

[0043] Group 2: Schizonepeta volatile oil in the prior art, its preparation method is basically referred to Chinese Materia Medica, 37 (1): 77, the difference is that the last step of diluting to 0.6% is added, after testing, the content of menthone and pulegone 73% in total;

[0044] Group 3: Schizonepeta extract prepared according to Example 1 of the present invention;

[0045] Group 4: Nepeta extract prepared according to Example 2 of the present inventi...

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Abstract

The invention provides a schizonepeta extractive which is characterized in that the schizonepeta extractive is obtained in a manner that the total content of piperitone and pulegone is lowered on the basis of schizonepeta volatile oil. In addition, the invention further provides a pesticide composition of the schizonepeta extractive and a preparation method of the pesticide composition. The schizonepeta extractive has lasting insect resistant effect.

Description

technical field [0001] The invention belongs to the field of pesticides. Specifically, the invention provides Nepeta nepeta extract, its preparation process and application, etc., which are convenient for actually being put into insect-resistant applications. Background technique [0002] Nepeta is a plant of Labiatae, and its whole plant or parts (such as leaves, spikes and stems, etc.) can extract volatile oil. The volatile oil is rich in menthone and pulegone, which usually account for 60-80% of the volatile oil, and may even account for more than 90% of the volatile oil (see Chinese Materia Medica, 37(1):77). [0003] Since menthone and pulegone, the main components of Nepeta volatile oil or extract, have antibacterial and anthelmintic effects, they were mainly used as antibacterial and anthelmintic natural medicines for humans or animals in the past, and they can also be used in agriculture at present (see China Agronomy Bulletin, 27(31): 269). [0004] Although the v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/22A01P7/04A01P7/02
Inventor 何其明唐齐严寒张杰
Owner CHENGDU NEWSUN CROPSCI
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