CN101061809A - Tylophorine emamectin benzoate microemulsion of botanical insecticide - Google Patents
Tylophorine emamectin benzoate microemulsion of botanical insecticide Download PDFInfo
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- CN101061809A CN101061809A CN 200710020922 CN200710020922A CN101061809A CN 101061809 A CN101061809 A CN 101061809A CN 200710020922 CN200710020922 CN 200710020922 CN 200710020922 A CN200710020922 A CN 200710020922A CN 101061809 A CN101061809 A CN 101061809A
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- tylophorine
- emamectin benzoate
- microemulsion
- emamectin
- plant insecticide
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Abstract
The invention discloses a plant source pesticide tylophorine. A vitamin salt microemulsion, which is characterized by the following: possessing active component as tylophorine and nail amido avermectin benzoate; choosing old melon head (Cynachum komarovii Al. Iljinski) as raw material; killing pest effectively because of plant alkaloid; enlargering the range of target pest. This preparation possesses better prevention and cure effect for sugar beet Noctuidae, vegetable green pest, small vegetable moth, tweel Noctuidae and so on pest.
Description
Technical field
The present invention relates to a kind of botanical pesticide category, particularly a kind of plant insecticide Tylophorine emamectin benzoate microemulsion.
Background technology
Surplus the agricultural chemicals usage amount in China every year has reached 100 ten thousand tons, be first place, the world, wherein 80% is high-toxic pesticide.The pollution of agriculture production environment such as soil, water body, make harmful chemical residual in a large number in agricultural product, the agricultural chemicals recall rate of grain such as wheat, corn reaches 10%～20%, exceeding standard rate is 5%～10%, dish, melon, really, tea is then higher, recall rate and exceeding standard rate are respectively more than 30% and 20%.Therefore, carry out the research and development of botanical pesticide, utilize the discarded object production of poisonous plant or cultivated plant efficient, low toxicity, low-residual, with the botanical pesticide of environmentally compatible, current agricultural sustainable development is had great strategic importance and realistic meaning.
In the production process of crops such as pollution-free vegetable, a large amount of chemical pesticides are restricted owing to pollution problem in the use, and the use of botanical pesticide can slow down the drug-fast generation of disease worm, improve the safety of beneficial organism, because plant insecticide contains multiple insecticidal active ingredient, its mechanism of action uniqueness is different with vague generalization prescription one mode of action of learning to farm, have stomach toxicity concurrently, tag, avoid keep away, effects such as food refusal, anesthesia, make insect difficult labour give birth to pesticide resistance.But practice for a long time shows, botanical pesticide use and the popularization process in because of preventive effect not good and antagonism insect to no effect wait former thereby be restricted.
Therefore, in today that environmental protection comes into one's own day by day, directly utilizing plant to be processed into commercially available agricultural chemical has certain market, and botanical pesticide reduces the usage amount of organic solvent by improving processing technology, improves the quality of products.China is being reached international standards aspect the research of botanical pesticide,, make rational use of resources, implement the insect comprehensive regulation and play a significant role for the exploitation public nuisance-free agricultural chemicals.
The radix tylophorae total alkali is to extract from psammophytes Cynanchum Komarrivii AI Iijiniski (Cynachum komarovii Al.Iljinski).According to reported in literature, its main lactone, alkaloid, phenolic compounds etc. of containing.The tool insecticidal activity be radix tylophorae total alkali (phenanthroindolizidine) Alkaloid.The alkalescence that this Alkaloid tool is stronger.Can be combined into easily molten or water soluble with inorganic acid and acid stronger organic acid, be insoluble to the salt of organic solvent; Free alkali is then water insoluble and be soluble in organic solvent.Plant wherein is to the good effect that killed off the insect pests.
Summary of the invention
The object of the present invention is to provide a kind of pest control effective, and the basic residual plant insecticide Tylophorine emamectin benzoate microemulsion of avirulence.
In order to reach above purpose, the scheme that the present invention adopts is: a kind of plant insecticide Tylophorine emamectin benzoate microemulsion, its active component are radix tylophorae total alkali and emamectin-benzoate.
Also contain auxiliary agent in the described microemulsion, this auxiliary agent comprises surfactant, bleeding agent and water.
Each components contents is respectively in the described microemulsion: radix tylophorae total alkali 0.1～1%, emamectin-benzoate are 0.01～1%, and surfactant 10～15%, bleeding agent are 5-10%, and surplus is a water.
Described surfactant is the non-ionic surface active agent alkylphenol polyoxyethylene.
Described bleeding agent is the stupid sulfonate of anion surfactant alkyl phenol.
Described radix tylophorae total alkali makes according to the method for being prepared as follows, and this preparation method comprises the steps:
(1), the raw material Cynanchum Komarrivii AI Iijiniski is cut to 2-5cm long, drop in the extractor, add ethanol and extract, extract, obtain raffinate one time after reclaiming the ethanol in this extract;
(2), regulate pH value to 2.5～3.5 of an above-mentioned raffinate, add solvent naphtha or hexane, the solution of organic layer is reclaimed in the jolting degreasing, must degreaser;
(3), the pH value of regulating above-mentioned degreaser is to 8-9, with toluene or ethyl acetate extract secondary raffinate, with decompression and solvent recovery after this secondary raffinate centrifugal dehydration, promptly get tool radix tylophorae total alkali.
In step (1), described Cynanchum Komarrivii AI Iijiniski is carried out alcohol extract will carry out three times, and consumption of ethanol is respectively 4 times, 3 times, 3 times of described Cynanchum Komarrivii AI Iijiniski weight when extracting at every turn; Each extraction time was respectively 3 hours, 2 hours, 2 hours.
Because the present invention has adopted above technical scheme, its advantage is: the environmental pollution that Tylophorine emamectin benzoate microemulsion causes at the long-term unreasonable use of ubiquitous chemical pesticide in the current agricultural production, direct murder by poisoning to non-target organism, outstanding problems such as sick worm easily develops immunity to drugs, by biology, information, the integrated application of technology such as isolation identification and Instrumental Analysis, utilize plant roots, stem, leaf, flower, parts such as fruit or the active component that is separated to are processed into preparation prevents and treats diseases and pests of agronomic crop, because of it meets environmental protection, healthy, the theory of sustainable development has been complied with agricultural sustainable development and the human needs that self health requirements is improved and has been become the direction of current pesticide research.
Its field control effectiveness test and result are as follows:
0.3% Tylophorine emamectin benzoate microemulsion shows through a large amount of field control effectiveness tests that from 2004-2006 its 1500 times of dilutions to the preventive effect of brassicaceous vegetable insect cabbage caterpillar are: behind the medicine 1 day 98.6%, and behind the medicine 3 days 94.8%, behind the medicine 7 days 93.3%; The preventive effect of beet armyworm is: behind the medicine 3 days 96.7%, and behind the medicine 7 days 96.1%, behind the medicine 10 days 93.6%; The preventive effect of prodenia litura is: behind the medicine 3 days 96.4%, and behind the medicine 7 days 95.0%, behind the medicine 10 days 94.3%; The preventive effect of diamond-back moth is: behind the medicine 1 day 95.3%, and behind the medicine 3 days 93.2%, behind the medicine 7 days 88.7%.
Embodiment
In a kind of plant insecticide Tylophorine emamectin benzoate microemulsion of present embodiment, the weight content of radix tylophorae total alkali (in the 7-demethoxytylophorine) is 0.3%, the weight content of emamectin-benzoate is 0.05%, the weight content of surfactant is 10～15%, the weight content of bleeding agent is 5～10%, and surplus is a water.
Wherein above-mentioned surfactant can be selected the non-ionic surface active agent alkylphenol polyoxyethylene for use, and bleeding agent can be selected the stupid sulfonate of anion surfactant alkyl phenol for use.
Following mask body is introduced a kind of preparation method of plant insecticide Tylophorine emamectin benzoate microemulsion:
At first be the extraction process of radix tylophorae total alkali:
Water content being cut to 2-5cm long less than 6% raw material Cynanchum Komarrivii AI Iijiniski, drop in the extractor, is 90% alcohol extract three times with concentration, and consumption of ethanol is respectively 4 times, 3 times, 3 times (W/W) of Cynanchum Komarrivii AI Iijiniski gross weight when extracting at every turn; Each time of extracting was respectively 3 hours, 2 hours, 2 hours, after three extractions are finished, extract was merged, and reclaimed ethanol and made raffinate one time.
A raffinate is regulated pH to 3 with concentrated hydrochloric acid, add the solvent naphtha or the hexane of 2～3 times of volumes (at every turn), twice of jolting degreasing.Reclaim the solution moral degreaser in the organic layer, and residue is abandoned it.
To be that 30% sodium hydroxide solution is regulated pH to 8-9 through the degreaser concentration of solvent naphtha or hexane degreasing, toluene or ethyl acetate with 2-3 times of volume (at every turn) extracts three times again, and the extract merging obtains secondary raffinate, again with secondary raffinate decompression and solvent recovery after the high speed centrifugation dehydration, promptly get the extract of tool insecticidal activity, just the radix tylophorae total alkali.
Main insecticidal constituent in the radix tylophorae total alkali is west (phenanthroindolizidine) Alkaloid (comprising 7-demethoxytylophorine, oxidation demethoxylation tylophorinine etc.) in the luxuriant and rich with fragrance parallel indoles.The total alkaloid content of this extract is (in 7-demethoxytylophorine, acid-base titration) about 3%.Utilize the above-mentioned radix tylophorae total alkali that makes to produce Tylophorine emamectin benzoate microemulsion, detailed process is as follows:
The extract (radix tylophorae total alkali) of getting above-mentioned gained is an amount of, the surfactant (non-ionic surface active agent alkylphenol polyoxyethylene) that adds above-mentioned amount, mix mixing with the bleeding agent (the stupid sulfonate of anion surfactant alkyl phenol) of above-mentioned amount, be heated to 55～65 ℃; Other gets an amount of emamectin-benzoate, with the acetone or alcohol heating for dissolving of 2 times of amounts, this solution is added in the above-mentioned hot solution, and fully mixing adds water to capacity, promptly again.
It is 0.3% that this product contains radix tylophorae total alkali (in the 7-demethoxytylophorine), and emamectin-benzoate is 0.05%, and surfactant is 10～15%, and bleeding agent is 5～10%, and solvent is a water.
This patent utilizes and extracts radix tylophorae total alkali (phenanthroindolizidine) Alkaloid in the plant Cynanchum Komarrivii AI Iijiniski (Cynachum komarovii Al.Iljinski), and added 0.05% emamectin-benzoate, in conjunction with indoor virulence with carried out a large amount of field plot trials, and at the very start the target insect is defined as resistant insect-beet armyworm, with this pest is that target carries out directed screening, by a large amount of tests, the target insect is had on the basis of better prevention effect at definite said preparation, progressively enlarged the scope of target insect, studies have shown that, said preparation not only has the better prevention effect to beet armyworm, also to cabbage caterpillar, diamond-back moth, prodenia litura, Deng insect good control efficiency is arranged all.
Claims (7)
1, a kind of plant insecticide Tylophorine emamectin benzoate microemulsion is characterized in that: its active component is radix tylophorae total alkali and emamectin-benzoate.
2, a kind of plant insecticide Tylophorine emamectin benzoate microemulsion according to claim 1, it is characterized in that: also contain auxiliary agent in the described microemulsion, this auxiliary agent comprises surfactant, bleeding agent and water.
3, a kind of plant insecticide Tylophorine emamectin benzoate microemulsion according to claim 2, it is characterized in that: each components contents is respectively in the described microemulsion: radix tylophorae total alkali 0.1～1%, emamectin-benzoate is 0.01～1%, surfactant 10～15%, bleeding agent is 5-10%, and surplus is a water.
4, according to claim 2 or 3 described a kind of plant insecticide Tylophorine emamectin benzoate microemulsions, it is characterized in that: described surfactant is the non-ionic surface active agent alkylphenol polyoxyethylene.
5, according to claim 2 or 3 described a kind of plant insecticide Tylophorine emamectin benzoate microemulsions, it is characterized in that: described bleeding agent is the stupid sulfonate of anion surfactant alkyl phenol.
6, a kind of plant insecticide Tylophorine emamectin benzoate microemulsion according to claim 1, it is characterized in that: described radix tylophorae total alkali makes according to the method for being prepared as follows, and this preparation method comprises the steps:
(1), the raw material Cynanchum Komarrivii AI Iijiniski is cut to 2-5cm long, drop in the extractor, add ethanol and extract, extract, obtain raffinate one time after reclaiming the ethanol in this extract;
(2), regulate pH value to 2.5～3.5 of an above-mentioned raffinate, add solvent naphtha or hexane, the solution of organic layer is reclaimed in the jolting degreasing, must degreaser;
(3), the pH value of regulating above-mentioned degreaser is to 8-9, with toluene or ethyl acetate extract secondary raffinate, with decompression and solvent recovery after this secondary raffinate centrifugal dehydration, promptly get tool radix tylophorae total alkali.
7, a kind of plant insecticide Tylophorine emamectin benzoate microemulsion according to claim 6, it is characterized in that: in step (1), described Cynanchum Komarrivii AI Iijiniski is carried out alcohol extract will carry out three times, and consumption of ethanol is respectively 4 times, 3 times, 3 times of described Cynanchum Komarrivii AI Iijiniski weight when extracting at every turn; Each extraction time was respectively 3 hours, 2 hours, 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710020922 CN101061809A (en) | 2007-03-28 | 2007-03-28 | Tylophorine emamectin benzoate microemulsion of botanical insecticide |
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| CN 200710020922 CN101061809A (en) | 2007-03-28 | 2007-03-28 | Tylophorine emamectin benzoate microemulsion of botanical insecticide |
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| CN101061809A true CN101061809A (en) | 2007-10-31 |
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| CN 200710020922 Pending CN101061809A (en) | 2007-03-28 | 2007-03-28 | Tylophorine emamectin benzoate microemulsion of botanical insecticide |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657239A (en) * | 2012-05-04 | 2012-09-12 | 宁夏大学 | Plant extract and chemical pesticide compound pesticide and preparation method of pesticide |
| CN103446211A (en) * | 2013-09-24 | 2013-12-18 | 兰州理工大学 | Cynanchum komarovii total alkaloid and preparing method and application thereof |
-
2007
- 2007-03-28 CN CN 200710020922 patent/CN101061809A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657239A (en) * | 2012-05-04 | 2012-09-12 | 宁夏大学 | Plant extract and chemical pesticide compound pesticide and preparation method of pesticide |
| CN103446211A (en) * | 2013-09-24 | 2013-12-18 | 兰州理工大学 | Cynanchum komarovii total alkaloid and preparing method and application thereof |
| CN103446211B (en) * | 2013-09-24 | 2016-02-10 | 兰州理工大学 | A kind of Cynanchum Komarovii total alkaloids and its preparation method and application |
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