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Preparation of killing oncomelania from pachysand and its process and use

A rich and killing technology, applied in the fields of botanical equipment and methods, molluscicides, and chemicals for biological control, etc., to achieve the effects of wide distribution, low preparation cost, and abundant resources

Inactive Publication Date: 2004-02-04
HUAZHONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, domestically, the medicinal parts (stems, leaves, flowers, etc.) of Lascaria sativa are used as components of traditional Chinese medicine, but there is no report on the use of natural active substances of the whole plant of Lascaria snails to kill snails at home and abroad.

Method used

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  • Preparation of killing oncomelania from pachysand and its process and use

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Experimental program
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Effect test

Embodiment 1

[0014] The active substance of Palachis chinensis is extracted by crushing magnetic stirring extraction method, and an appropriate amount of distilled water is added to prepare Plysia chinensis water preparations with concentrations of 0.1% (1000ppm), 0.5% (5000ppm) and 1% (10000ppm). The experiment adopts soaking method, and the temperature is controlled at 25±1°C. Live snails were taken into groups of 50 and packed into nylon mesh bags, and put into the beakers filled with the above-mentioned different concentrations of Pulmonia snails, and water was used as a control. Repeat 3 times. Take it out after soaking for 24 hours, rinse it several times with clear water, then place it in clear water to raise it for 48 hours, observe its death situation, and count the snail mortality rate. The results showed that: 0.1%~1% (1000ppm~10000ppm) Pulmonia chinensis water agent can effectively kill the snails (Table 1). With the increase of the concentration of P. chinensis water agent, ...

Embodiment 2

[0017] Utilize the broken magnetic stirring extraction method to extract the active substance of Phyllostachys chinensis, and then extract it with n-butanol to obtain the n-butanol phase, and then add appropriate amount of distilled water to prepare the concentrations of 0.01% (100ppm), 0.05% (500ppm), and 0.1% respectively (1000ppm) Phyllostachys n-butanol phase water agent. The experiment adopts soaking method, and the temperature is controlled at 25±1°C. Take 50 live snails as a group, put them into nylon mesh bags, and put them into the beakers filled with the above-mentioned different concentrations of N. Repeat 3 times. Take it out after soaking for 24 hours, rinse it several times with clear water, and then put it in clear water to raise it for 48 hours, observe its death situation, and count the oncomelania mortality rate. The results showed that: 0.05% (500ppm), 0.1% (1000ppm) of Phyllostachys chinensis n-butanol phase aqueous solution can effectively kill the snail...

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Abstract

The present invention relates to the field of biological technology. The pachysand extract or steroid alkaloid produced through crushing and magnetic stirring extraction process is compounded into water solution of different concentration to kill Oncomelania hupensis as the host of Schistosoma japonicum. It has obvious killing effect and is harmless to human body and farm animal.

Description

technical field [0001] The invention relates to a preparation, a preparation method and an application of oncomelania snails prepared from Phyllostachys chinensis. Background technique [0002] Pachysandra, scientific name: Pachysandra terminalis Sieb. et Zucc, is a herbaceous plant of the genus Pachysandra Michx in the family Buxaceae. Shrub-like, up to 20-30 cm, stems erect or lower part prostrate, green. Widely distributed in Zhejiang, Hubei, Anhui, Sichuan, Shaanxi, Gansu and other provinces, mostly in dense forests or shrubs in damp places. It can adapt to different environments, grows quickly, is easy to introduce, and can be cultivated artificially. [0003] At present, the medicinal parts (stems, leaves, flowers, etc.) of P. chinensis are used as components of traditional Chinese medicine in China, but there are no reports at home and abroad on the use of natural active substances of the whole plant of P. chinensis to kill snails. Contents of the invention [00...

Claims

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Application Information

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IPC IPC(8): A01N65/08A01P9/00
CPCY02A50/30
Inventor 李文新赵利琴刘家武曾林
Owner HUAZHONG NORMAL UNIV
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