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Plant tar oil bactericide and preparation thereof

A bactericide, bamboo tar technology, applied in the directions of botanical equipment and methods, fungicides, plant growth regulators, etc., can solve the problems of many variable factors of biological source materials, high dependence, affecting the export of agricultural products, etc. The effect of enhancing disease resistance and promoting robust growth

Inactive Publication Date: 2008-09-10
FUJIAN AGRI & FORESTRY UNIV
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Problems solved by technology

Because the use of agricultural antibiotics is harmful to human health and prone to drug resistance, the European Union has restricted the use of some antibiotics and their detection in agricultural products in recent years, which has greatly affected the export of agricultural products in my country.
Chemically synthesized fungicides (including biomimetic fungicides) are highly dependent on production raw materials, equipment, and processes, resulting in high product prices and production pollution problems
The research and development of other biological source (such as plant source) fungicides is currently being vigorously carried out in our country. However, due to too many variable factors of biological source materials, it is really necessary to develop new formulations of fungicides or obtain new active substance precursors and further develop them. very few

Method used

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  • Plant tar oil bactericide and preparation thereof
  • Plant tar oil bactericide and preparation thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: a kind of preparation method of plant tar bactericide-bamboo tar bactericide

[0023] Put the bamboo vinegar solution in the separatory funnel, then add the organic extractant chloroform, the amount of chloroform added is 15% (V / V) of the bamboo vinegar solution, oscillate and mix, after standing to separate layers, separate the liquid and collect the above The aqueous layer and the chloroform extract of lower floor; Add chloroform again in the aqueous layer of collection, add-on is 15% (V / V) of bamboo vinegar liquid, vibration extraction, after leaving standstill layering, collect respectively upper aqueous layer and The chloroform extract of the lower layer; the extraction was repeated 3 times; the chloroform extracts were combined. Concentrate the chloroform extract with a rotary evaporator under reduced pressure, wherein the vacuum degree is controlled at 0.01 MPa, the evaporation temperature is 50° C., and the chloroform is evaporated to obtain bamboo...

Embodiment 2

[0024] Embodiment 2: a kind of preparation method of plant tar bactericide-wood tar bactericide

[0025] Put the wood vinegar in the separating funnel, then add the organic extractant chloroform, the amount of chloroform added is 20% (V / V) of the wood vinegar, shake and mix, after standing for layers, separate the liquid and collect the above The aqueous layer and the chloroform extract of the lower layer. Add chloroform in the collected water layer, the addition amount is 20% (V / V) of wood vinegar, extract with above-mentioned method, collect the chloroform extract of upper water layer and lower layer respectively. Repeat the extraction 3 times. Combine the chloroform extracts. Concentrate the chloroform extract under reduced pressure with a rotary evaporator, in which the vacuum degree is controlled at 0.01 MPa, and the evaporation temperature is 55° C., and the chloroform is evaporated to obtain wood tar. Mix wood tar with acetone, heat to a liquid temperature of 50°C, s...

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Abstract

The invention relates to a plant tar bactericide and preparation methods thereof, which comprise a method for preparing a bamboo tat bactericide and a method for preparing a wood tar bactericide. The specific preparation method comprises the steps of extraction, concentration and preparation. The plant tar bactericide of the invention for treating the phytopathogenic bacteria has the advantages of high medical effect, low toxicity, low residue, non-pollution, being no drug resistance and not hurting the natural enemies, etc., and is an environment-friendly bactericide for replacing the traditional antibiotic bactericides and chemically synthesized bactericides.

Description

technical field [0001] The invention relates to a bactericide and a preparation method thereof, in particular to a vegetable tar bactericide and a preparation method thereof. Background technique [0002] The use of fungicides for chemical control of plant diseases has the advantages of high efficiency, quick effect, convenient use, and high cost performance. Especially before or at the beginning of the epidemic of the current season, chemical control is the most effective way to control plant diseases. The low-cost development of new fungicides with high efficiency and low toxicity has always been a hot issue in the agricultural field. However, with the enhancement of people's awareness of environmental protection, the government has increasingly strict requirements on the administration of new chemical pesticides. The development of chemical pesticides is extremely difficult and expensive, but the success rate is very low. [0003] In my country, most of the medicaments u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N61/02A01N65/00A01P3/00
Inventor 江茂生许文耀
Owner FUJIAN AGRI & FORESTRY UNIV
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