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Vegetable acaricide, prepn. method and use thereof

A botanical and pharmaceutical technology, applied in the field of botanical acaricides and acaricides, can solve the problems of no turmeric acaricidal activity, limitations, and no analysis and comparison of insecticidal components.

Inactive Publication Date: 2005-01-05
CHONGQING ACAD OF CHINESE MATERIA MEDICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, although there have been many research reports on the research on the biological activity of turmeric, some reports also show that turmeric has certain insecticidal and bacteriostatic activities, but these active studies are basically limited to medicine. The research report is also very simple, and basically does not involve the analysis and comparison of insecticidal components
In particular, there is no research report on the acaricidal activity of turmeric

Method used

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  • Vegetable acaricide, prepn. method and use thereof

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Embodiment 1

[0045] The selection of embodiment 1 turmeric variety

[0046] The plant material used in the present invention is Curcuma longa L. This plant belongs to the genus Curcuma of Zingiberaceae Zingiberaceae, and the group of Curcuma is native to India and Southeast Asia. There are more than 50 species in the world, and 8 species of Curcuma are known in my country, mainly distributed in Sichuan, Chongqing, Zhejiang, Shaanxi and other places.

[0047] In the course of the invention, it was found that the contents of (total curcumin) curcuminoids and curcuminoids in different types of plants of the genus Turmeric differ greatly, up to hundreds of times, and the difference in volatile oil content can reach 6 times. The difference between them is small. The highest total curcumin is C.longa rhizome of Curcuma longa, with a content of more than 2%; followed by Indonesian Curcuma C.xanthorrhiza, Sichuan Curcuma C.sichuanensis and Sichuan Curcuma C.chuanyujin, with a content of 0.2-0.5%;...

Embodiment 2

[0048] The extraction method and content detection of embodiment 2 curcuminoid compounds

[0049] There are many extraction methods for curcumin compounds. We use the following methods to obtain different components of curcuminoid compounds. At the same time, the content of curcumin, demethoxycurcumin and demethoxycurcumin can be obtained by using the colorimetric method. The extraction method is to weigh 50.0 g of turmeric powder (a, b, c), and add 500 mL of 75% ethanol. Stand and soak for 48 hours, filter, concentrate to a certain volume with a rotary evaporator, reflux with petroleum ether to degrease, and then concentrate the remaining part to an appropriate volume, and store it at low temperature for future use. In a Φ=20mm, L=100cm glass chromatography column, with CHCl 3 、CH 3 The mixed solution of OH and HCOOH (96:4:0.1) is the eluent, and the treated silica gel G is packed by wet method, the column bed height H=70cm, pressurized by a constant flow pump, and the pres...

Embodiment 3

[0050] The extraction separation and activity evaluation of embodiment 3 curcumonoids

[0051] Weigh 600g of turmeric dry powder, fill it loosely, soak it all in water, boil the water by direct heating, and the water essential oil is directly released in the water. After the distillate is cooled, the volatile oils are recovered. Dissolve the recovered substance in benzene, add methanol solution containing thiourea, heat to dissolve after mixing, let cool, and crystallize to obtain needle-like crystals (composed of 1 molecule of curcumone and 6.2 molecules of thiourea). Dissolve needle-like crystals in a mixed solution of ether and water, shake and mix well, collect the ether layer after standing, wash with water and dehydrate. Obtain the ether solution, recover the ether, and then obtain the pure curcumone in the form of yellow oil.

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Abstract

A vegetative acaricide is prepared from the curcumin, curcumone, synergist, emulsifier and disperser. It can be used for the mite of fruit tree, pests in storage room, and vegetable aphid.

Description

technical field [0001] The present invention relates to acaricides. More specifically, the present invention relates to the technical field of botanical acaricides, in particular to a botanical acaricide developed with the acaricidal active compound of plant turmeric as the main component, and its preparation and application. Background of the invention [0002] Among the pests that humans need to control, mites are of special importance. According to the relationship with humans, harmful mites can be divided into agricultural mites, medical mites and storage mites. Agricultural mites mainly refer to phytophagous spider mites, which harm almost all crops and regions in the world. Tetranychus cinnabarinus is the most widely distributed and most serious agricultural pest in my country. Stored mites mainly refer to acaroid mites, which are a large group of herbivorous, fungus-eating and scavenging mites that mainly feed on organic debris of plants or animals. Tyrophagus putre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/58
Inventor 陈仕江丁伟金仕勇张勇强钟国跃马开森杨帮徐金辉
Owner CHONGQING ACAD OF CHINESE MATERIA MEDICA
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