Method for extracting insecticidal active material from traditional Chinese medicine feather cockscomb and application thereof

Abstract

The invention relates to a method for extracting an insecticidal active material from traditional Chinese medicine feather cockscomb and an application thereof. The method comprises the following steps: cleaning all plant tissues of feather cockscomb, then drying, cooling and grinding the plant tissues to obtain feather cockscomb powder; and extracting by methanol to obtain a feather cockscomb extracting solution; reducing pressure and concentrating the feather cockscomb extracting solution to a viscous paste-shape material to obtain feather cockscomb crude extract; dissolving the feather cockscomb crude extract by methanol, mixing the dissolved feather cockscomb crude extract evenly with kieselguhr and volatilizing solvent methanol to obtain the mixture of feather cockscomb crude extract and kieselguhr; and extracting the mixture by normal hexane before carrying out diethyl ether extraction, collecting diethyl ether extract phase and reducing pressure and concentrating the diethyl ether extract phase to obtain the insecticidal active material extracted from traditional Chinese medicine feather cockscomb. The method of the invention features simple process and effectively retains the insecticidal active material in the traditional Chinese medicine feather cockscomb by chemical extraction. Applied to agricultural pest control, the extract of the insecticidal active material has the characteristics of good control effect, low control cost, no pollution, no residue and the like and boasts good social and economic benefits.

Description

technical field [0001] The invention relates to an extraction method and application of plant active ingredients, in particular to an extraction method and application of a traditional Chinese medicine Qinglong insecticidal active substance. Background technique [0002] Since the 1950s, a large number of organic synthetic insecticides have been used, which has played a major role in pest control. However, the long-term and extensive use of chemical pesticides will bring various disadvantages. The emergence of drug resistance, toxic residues, and environmental pollution have become risk factors that endanger human health, ecological balance, and social development. Compared with chemical pesticides, botanical pesticides have low toxicity to humans and animals, and have little impact on the ecological environment, so they have great development value and application prospects. Screening and discovering new insecticidal active substances from plants, and then developing botan...

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Problems solved by technology

Celosia chinensis has a strong antibacterial and anti-inflammatory effect. The research on Semen chinensis has found that its seeds are rich in fatty oils, unsaturated fatty acids and minerals. Celosian, an acidic polysaccharide that has been isolated from the water extract of Semen chinensis , the substance has a hepatoprotective effect and can inhibit the increase of ALT activity. It may be an effective substance for treating acute hepatitis and protecting liver cells. In addition, studies have also found that the water extract of Fructus L. chinensis has a lowering effect on alloxan diabetic mice. Effects on blood sugar, the ethanol extract of Fructus Chinensis has anti-diabetic activity, but there is little research on its role in the control of agricultural and forestry diseases and insect pests

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