Method for extracting plant source pesticides total alkaloids of sophora flavescens

A technology of botanical pesticides and total alkaloids of matrine, applied in botany equipment and methods, plant growth regulators, chemicals for biological control, etc., can solve the problems of high cost, low extraction rate, complicated process, etc. Achieve production cost control, improve extraction rate, and simple operation

Active Publication Date: 2011-07-27
SHANDONG MEI LUO FU AGRI POLYTRON TECH
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned technique for extracting matrine mainly includes the production process steps of the immersion ultrasonic extraction method and the production process steps of the high-temperature immersion extraction method. Therefore, the cost is high, and it is difficult to realize industrial production and popularization and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: a kind of method for extracting total alkaloids of botanical pesticide Sophora flavescens, comprising crushing, extracting, filtering and evaporating to dryness, the specific steps are as follows, and the percentages are all percentages by weight:

[0031] a) Dry and grind 25Kg of Sophora flavescens root into 60 mesh fine particles, add 150Kg of 60% ethanol (containing 0.02% ammonia water), heat to 80°C, and stir for 16 hours to obtain a mixed solution.

[0032] b) Filter the above mixture with a plate and frame filter press to remove insoluble matter, and evaporate the water to dryness at 80° C. to obtain dry powder of total alkaloids of Sophora flavescens. The total alkali content of Sophora flavescens is 0.65Kg.

[0033] The following are the steps for determining the total alkaloid content of Sophora flavescens:

[0034]c) Take 0.5g of dry powder of Sophora flavescens total alkali extract, put it in a conical flask with a stopper, add 25ml of chlorofo...

Embodiment 2

[0036] Embodiment 2. A method for extracting total alkaloids of botanical pesticide Sophora flavescens, comprising pulverizing, extracting, filtering and evaporating to dryness, the specific steps are as follows, and the percentages are all percentages by weight:

[0037] Dry and grind 100 kg of Sophora flavescens root to 60 mesh fine particles, add 1000 kg of 60% ethanol (containing 0.03% ammonia water), heat to 80° C., and stir for 17 hours to obtain a mixed solution. Filter the mixed solution with a plate and frame filter press to remove insoluble matter, and evaporate the water to dryness at 80°C to obtain dry powder of total alkaloids of Sophora flavescens. The total alkali content of Sophora flavescens is 2.8Kg.

[0038] Table 1. Comparison table of three extraction process parameters

[0039]

method

Sophora root

Powder (g)

Dried extract

Powder (g)

Creaming rate

(%)

Matrine total alkaloids

(g)

Extraction rat...

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PUM

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Abstract

The invention relates to a method for extracting plant-based total matrines used as pesticide and belongs to the technical field of pesticide extraction and production. The method comprises the steps of pulverization, extraction, filtration and evaporation drying. The method has the advantages of physical extraction, no chemical contamination during production, no toxicity or harm of product and no pesticide residue; can increase the extraction rate, extract yield and alkaloid content of matrine; can minimize the production cost; and provides advanced techniques and basic conditions for industrial production and agricultural use of matrine biopesticide.

Description

technical field [0001] The invention relates to a method for extracting total alkaloids of botanical pesticide matrine, which belongs to the technical field of pesticide extraction and preparation. Background technique [0002] my country is one of the earliest countries to use pesticides. In 1950, the production of Liuliu began; in 1957, the first organophosphorus insecticide production plant was built, and the production of organophosphorus insecticides began. In the 1960s and 1970s, organochlorine, organophosphorus and carbamate insecticides were mainly developed, while fungicides and plant growth regulators were also developed. In 1973, my country stopped using mercury preparations, and developed fungicides such as Daobunjing and carbendazim to replace mercury preparations. From the late 1970s to the 1980s, new varieties of high-efficiency and safe pesticides have been continuously developed. In 1983, my country stopped using high-residue organochlorine insecticides s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/20A01N43/90A01P7/00
Inventor 李杜李刚李红云李熵田纯华王玉军张素芬宋丽吴凯王少伟李红英刘杰李玲
Owner SHANDONG MEI LUO FU AGRI POLYTRON TECH
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