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Preparing method and application of narrow leaf Chloranthus spicatus extractive
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A technology of extract and extraction method, applied in the field of pesticides, can solve the problems of not finding economic value, etc., and achieve good application and promotion prospects, low usage, and excellent insecticidal effects.
Inactive Publication Date: 2011-07-27
SOUTH CHINA AGRI UNIV
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[0005] Other plants in the same genus of Chrysanthemum angustifolia are important medicinal resources. They are widely used in folks in my country to dredge meridians, activate collaterals, stop bleeding and dispel wind and cold. However, Chrysanthemum angustifolia is currently only regarded as a weed without any economic value
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Embodiment 1
[0021] methanol extraction
[0022] The roots, stems, leaves, flowers and fruits or whole plants of Chrysanthemum angustifolia are collected, dried indoors or at 50-55°C, and crushed. At room temperature, the pulverized material is soaked in methanol 5 to 10 times the volume of the dry plant sample for 3 times, each time for 1 to 3 days, combined with the soaking solution for 3 times, filtered, concentrated under reduced pressure, and methanol is removed to obtain Golden Millet angustifolia blue methanol extract.
Embodiment 2
[0024] ethanol extraction
[0025] Collect the roots of Chrysanthemum angustifolia plants, dry them at 50-55°C, and crush them. At room temperature, soak the pulverized material in ethanol 5 to 10 times the volume of the dry sample for 3 times, each time for 1 to 3 days, combine the soaking solutions for 3 times, filter, concentrate under reduced pressure, and remove the ethanol to obtain Chrysanthemum angustifolia root ethanol extract.
Embodiment 3
[0027] N, N-dimethylformamide extraction
[0028] Dried the stems of Chrysanthemum angustifolia plant at 50-55°C and crushed. At room temperature, soak the pulverized material in N,N-dimethylformamide 5 to 10 times the volume of the dry sample for 3 times, each time for 1 to 3 days, combine the 3 times of soaking solution, filter, concentrate under reduced pressure, and remove N,N-dimethylformamide, the N,N-dimethylformamide extract of Chrysanthemum angustifolia stem can be obtained.
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Abstract
The invention discloses a preparation method of chloranthus angustifolius extractive and adopts the chloranthus angustifolius as raw material and is obtained by solvent extraction, supercritical extraction, microwave extraction, ultrasonic extraction, crushing extraction, steam distillation or extraction. The invention also discloses the application of the extractive in preparation of a pesticideand a bactericide. The invention can change the chloranthus angustifolius into useful substance to prepare a botanical extract with excellent insecticide and bactericidal activity, with significant effects on diseases and pest control. The preparation method of the invention is simple and easy and has lower cost and good prospects for application and generalization.
Description
technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a preparation method of an extract of Chrysanthemum angustifolia and its application in the preparation of insecticides and fungicides. Background technique [0002] Since the 1960s, the public has paid more and more attention to the toxicity of pesticides and the environmental pollution caused by pesticides. Some pesticide varieties with high toxicity and long residue, such as organic mercury preparations, organic chlorine preparations, and highly toxic organophosphorus preparations, have been banned one after another. In the 1990s, people had higher and higher requirements for food safety and environmental protection. Countries around the world have enacted laws and regulations on gradually banning and disabling highly toxic and high residue pesticides. After my country's accession to the WTO, the problem of pesticide residues has become a technical barrier to internatio...
Claims
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Application Information
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