Inula flower extractive and preparation method and application thereof

An extract and technology of inula inula, applied in the field of inula inula extract and its preparation, can solve the problems of increased pest resistance, reduced number of natural enemies, and damage to human health, achieving high efficiency of chemical pesticides and conducive to industrial production , Extract simple and easy effects

Inactive Publication Date: 2009-11-25
BEIJING UNIV OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the long-term and extensive use of chemical pesticides, a series of negative effects have been produced, such as increased pest resistance, reduced number of natural enemies, serious environmental pollution, and impaired human health.

Method used

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  • Inula flower extractive and preparation method and application thereof
  • Inula flower extractive and preparation method and application thereof
  • Inula flower extractive and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: Preparation of Inula inula extract of the present invention

[0045] Crush Inula inula, set aside, soak in 5 times the weight of petroleum ether at room temperature, extract 3 times, each time for 3-5 days, concentrate the extracts under reduced pressure respectively, and combine them to obtain the Inula inula extract of the present invention .

Embodiment 2

[0046] Embodiment 2: the preparation of Inula inula extract of the present invention

[0047] Weigh 0.001g of Inula inula extract in Example 1, add 0.3ml Tween-80, stir, and when the extract is completely combined with Tween, dilute with distilled water to make Inula inula with a concentration of 2mg / ml extract.

Embodiment 3

[0048] Embodiment 3: the preparation of Inula inula extract of the present invention

[0049] The Inula inula was crushed and set aside, adding 3 times the volume of petroleum ether, percolating and extracting three times, filtering, combining the extracts, and concentrating under reduced pressure to obtain the Inula inula extract of the present invention.

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Abstract

The invention discloses an inula flower extractive pesticide with high efficiency, low toxicity and residual, which is harmonious with the environment and other biology, leaching, seeping or reflow extracting and so on steps are adopted during extracting, the invention has profound meanings for environmental protection and solving the medicine resistance of the harm mite. Compared with the pesticides prepared by chemistry, the invention has the following characteristics and advantages: the inula flower is the plant in nature, so the extractive is easy to decompose under the natural condition and has safety for the environment and surrounding ecologic system and no problem of environment pollution; the inula flower extractive is a multi-component mixture, and has a plurality of action positions for cinnabar leaf mite., so the drug resistance can not be easy to generate; it is proved by the experiment, the inula flower extractive has obvious miticide effect and high-efficiency chemical pesticides characteristic; the extracting of activity component in the inula flower is simple and easy, and is propitious to perform the industrial production.

Description

field of invention [0001] The invention relates to a plant extract, in particular to an inula extract, a preparation method and application thereof. technical background [0002] Herbivorous mites have the characteristics of small size, fast reproduction, high population density, and heavy damage. They are recognized as harmful biological communities that are difficult to control. The cinnabar spider mite (Tetranychus cinnabarinus) belongs to Arachnida, Eucaridae, Tetranychidae, and is an important harmful mite that harms fruits, vegetables and greenhouse plants. Chemical pesticides play an important role in controlling harmful mites in agricultural production, protecting crops from damage and ensuring agricultural economic value. However, due to the long-term and extensive use of chemical pesticides, a series of negative effects have been produced, such as increased pest resistance, decreased number of natural enemies, serious environmental pollution, and impaired human he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/12A01P7/02
Inventor 王有年师光禄靳永胜贾海洋
Owner BEIJING UNIV OF AGRI
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