CN1327744A - Theasaponin-chitosan compound and its preparing process and application in insecticide - Google Patents
Theasaponin-chitosan compound and its preparing process and application in insecticide Download PDFInfo
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- CN1327744A CN1327744A CN 01129393 CN01129393A CN1327744A CN 1327744 A CN1327744 A CN 1327744A CN 01129393 CN01129393 CN 01129393 CN 01129393 A CN01129393 A CN 01129393A CN 1327744 A CN1327744 A CN 1327744A
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- tea saponin
- chitosan complexes
- insecticide
- acid
- chitosan
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- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
A theasaponin-chitosan compound as a novel insecticide and its preparing process are disclosed. It features low dosage, broad sprectrum, no environmental pollution, high safety, easy degradation and short residual period.
Description
The present invention relates to a kind of compounded novel pesticide behind the effective component extracting from animal and plant respectively, is tea saponin-chitosan complexes insecticide specifically, and relates to its method of preparation and contain the insecticides of this compound.
In recent years, because problem such as environment more and more receives the concern of society, descend gradually for the use of toxicity height, residual quantity is big, environmental pollution is serious organic insecticide, and nontoxic biological insecticides have more and more caused people's interest.
The purpose of this invention is to provide a kind of novel pesticide, is tea saponin-chitosan complexes insecticide specifically.It has, and consumption is little, and pest-resistant spectrum is wide, and is nontoxic to people and animals, easily degraded, and residual effect is short, and environmentally safe does not produce characteristics such as poisoning.Insect had tag and stomach poison function, can suppress its sterol biosynthesis and make its death fungi.
Another object of the present invention provides the method for the above-mentioned tea saponin-chitosan complexes of preparation.
A present invention also purpose provides the insecticides that contains above-mentioned tea saponin-chitosan complexes.
The tea saponin is well-known as a kind of biological insecticides, but its drug effect is relatively low.The inventor finds unexpectedly, by tea saponin and shitosan are used for forming compound, has obtained beyond thought effect.Because shitosan has positive charge, it can carry electronegative insect or the fungi in tea saponin trend surface in liquid, the tea saponin is concentrated around these pests, thereby improved the insecticide efficiency of tea saponin greatly.In addition, form than stabilized complex, can play stable, slowly-releasing and long-acting effect by making shitosan and tea saponin.
The preparation method of tea saponin-chitosan complexes of the present invention is as follows:
Camellia oleosa seed cake dregs of rice powder behind the extracting degreasing is used the alkaline water diacolation, do not have yellow to sepage till.With the percolate retort of packing into, stir that to add the concentrated acid adjust pH down be acid, between the preferred pH3-5, heat then, preferably be heated to 70-90 ℃, more preferably about 80 ℃, stir adding shitosan down, the insulated and stirred certain hour, preferred 30-50 minutes, move into settling tank, leave standstill.Treat precipitation fully, supernatant is removed in siphon, the portion's of taking off precipitation, add the suitable quantity of water dilution after, atomized drying promptly obtains light yellow tea saponin-chitosan complexes powder.This powder contains the tea saponin more than 65%.
Wherein the weight ratio of the camellia oleosa seed cake dregs of rice and shitosan approximately is 1000: 1～5.
Wherein the molecular weight of shitosan is about 106.Should use the shitosan of fine powder form, preferably at 80-200 orders, more preferably between 80-100 orders.Described buck can be pH10-14, preferred 12-14 limewash, sodium hydroxide solution, sodium carbonate liquor, sodium bicarbonate solution etc.Described concentrated acid can be industrial hydrochloric acid, nitric acid etc., and wherein hydrochloric acid is preferred.
Tea saponin-chitosan complexes of the present invention can independent or composite use.When compound of the present invention uses separately, itself have emulsification, dispersion, foaming, effect such as wetting, if it can effectively kill soil nematodes, snail, slug, mite, aphid, aleyrodid, duckweed midge and multiple instar larvae, with other insecticide, during as desinsection chrysanthemum ester class or the composite use of organophosphorus insecticide, can improve their adhesion strength, extension power on crop, thereby improve drug effect, reduce desinsection chrysanthemum ester insecticide or organic phosphorous insecticide consumption.In addition, compound of the present invention can also stimulate crop growth, promotes seed sprouting, so also be a kind of new auxin.
Compound poisonous fiss of the present invention effect can be used for shrimp-cultivation pool go out harmful fish, sterilization, improves the shrimp survival rate; Also can be used for the fishpond of having holidays by turns, be used for sterilization, murder worm etc.
During the composite use of other botanical pesticide and compound of the present invention, suitable fresh preparation.Compound of the present invention can be applied to any in the known insecticides composition.It can use with the amount of 0.1～10wt% of insecticides.Through evidence, it can reduce 30～50% of chemical pesticide consumption, so can alleviate the residual quantity of chemical pesticide and to people and animals' toxicity.
Can be mixed with the concentration of 0.5～5wt% when compound of the present invention uses separately, amount of application probably is 100kg soup/mu.
Compound insecticide of the present invention or the insecticides that contains compound of the present invention can be applicable to crops such as wheat, corn etc., vegetables such as Chinese cabbage, leek, celery, radish etc., fruit tree such as peach, apple tree, pear tree etc.Field trial through the polylith experimental field proves, by above-mentioned amount of application, compound insecticide of the present invention reaches 70～90% to the preventive effect behind 10 days of aphid, and preventive effect behind 10 days of cabbage caterpillar is reached 100%, and preventive effect behind 10 days of snail is reached 100%.Prove that thus compound insecticide of the present invention has splendid insecticidal effect, and nontoxic, environmentally friendly, the residence time is short, is difficult for developing immunity to drugs, and therefore is particularly suitable for promoting the use of.
Below in conjunction with embodiment the present invention is described.
Embodiment
Extracting degreasing grouts powder 1kg (20 order) uses the saturated limewater diacolation, does not have yellow to percolate, collects the about 7kg of percolate.Put into retort, stir and to drip industrial concentrated hydrochloric acid (concentration 30%) down, till not having flocculent deposit and taking place.Hydrochloric acid consumption 80ml, pH=3; When being heated to 80 ℃, stop heating, stir adding 4g shitosan fine powder (80 order) down, continue to stir 40 minutes, be transferred to settling tank, leave standstill more than the 12h, supernatant is removed in siphon, takes off portion's sediment and dilutes atomized drying with the equivalent clear water, get light yellow theasaponin-chitosan compound 94g, tea saponin content 65.4%.
Claims (6)
1, tea saponin-chitosan complexes is characterized in that it is obtained by following method:
Camellia oleosa seed cake dregs of rice powder behind the extracting degreasing is used the alkaline water diacolation, do not have yellow to sepage till, with the percolate retort of packing into, stir that to add the concentrated acid adjust pH down be acid, heat then, stir and add shitosan down, insulated and stirred certain hour, immigration settling tank, leave standstill, treat precipitation fully, supernatant is removed in siphon, the portion's of taking off precipitation, after adding the suitable quantity of water dilution, atomized drying promptly obtains light yellow tea saponin-chitosan complexes powder.
2, according to the tea saponin-chitosan complexes of claim 1, wherein the weight proportion of camellia oleosa seed cake dregs of rice powder and shitosan is 1000: 1～5.
3, according to claim 1 tea saponin-chitosan complexes, described alkaline water is selected from limewash, sodium hydroxide solution, sodium carbonate liquor and sodium bicarbonate solution.
4, according to the tea saponin-chitosan complexes of claim 1, described concentrated acid is selected from nitric acid and hydrochloric acid.
5,, be characterised in that with concentrated acid the pH value is transferred to 2～3 according to the tea saponin-chitosan complexes of claim 1.
6, the purposes of the composition in the tea of claim 1 saponin-chitosan complexes crops insecticide or the insecticides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01129393 CN1327744A (en) | 2001-06-15 | 2001-06-15 | Theasaponin-chitosan compound and its preparing process and application in insecticide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01129393 CN1327744A (en) | 2001-06-15 | 2001-06-15 | Theasaponin-chitosan compound and its preparing process and application in insecticide |
Publications (1)
| Publication Number | Publication Date |
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| CN1327744A true CN1327744A (en) | 2001-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 01129393 Pending CN1327744A (en) | 2001-06-15 | 2001-06-15 | Theasaponin-chitosan compound and its preparing process and application in insecticide |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102396457A (en) * | 2011-12-10 | 2012-04-04 | 福建农林大学 | Pesticide composition containing tea saponin and amino-oligosaccharin |
| CN102948418A (en) * | 2011-08-26 | 2013-03-06 | 浙江海洋学院 | Tea saponin tablet and preparation method thereof |
| CN104024165A (en) * | 2011-09-14 | 2014-09-03 | 智地Ip公司 | Method and apparatus for treating pests |
| CN104082352A (en) * | 2014-06-27 | 2014-10-08 | 广西平乐农药厂 | Biological pesticide |
| CN106106495A (en) * | 2016-06-15 | 2016-11-16 | 中国农业科学院植物保护研究所 | A kind of clothianidin chitosan microball and its preparation method and application |
-
2001
- 2001-06-15 CN CN 01129393 patent/CN1327744A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102948418A (en) * | 2011-08-26 | 2013-03-06 | 浙江海洋学院 | Tea saponin tablet and preparation method thereof |
| CN102948418B (en) * | 2011-08-26 | 2015-10-21 | 浙江海洋学院 | A kind of tea saponin tablet and preparation method thereof |
| CN104024165A (en) * | 2011-09-14 | 2014-09-03 | 智地Ip公司 | Method and apparatus for treating pests |
| CN102396457A (en) * | 2011-12-10 | 2012-04-04 | 福建农林大学 | Pesticide composition containing tea saponin and amino-oligosaccharin |
| CN102396457B (en) * | 2011-12-10 | 2013-10-23 | 福建农林大学 | Pesticide composition containing tea saponin and oligosaccharins |
| CN104082352A (en) * | 2014-06-27 | 2014-10-08 | 广西平乐农药厂 | Biological pesticide |
| CN104082352B (en) * | 2014-06-27 | 2016-07-13 | 广西平乐农药厂 | A kind of biological pesticide |
| CN106106495A (en) * | 2016-06-15 | 2016-11-16 | 中国农业科学院植物保护研究所 | A kind of clothianidin chitosan microball and its preparation method and application |
| CN106106495B (en) * | 2016-06-15 | 2019-01-08 | 中国农业科学院植物保护研究所 | A kind of clothianidin chitosan microball and its preparation method and application |
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