A method of insecticide is prepared by fermenting raw materials of Azalea pontica
Technical field
It the present invention relates to the use of the technical field that biofermentation prepares insecticide, in particular to one kind is using Azalea pontica as raw material
The method that fermentation prepares insecticide.
Background technique
Azalea pontica is Ericaceae Genus Rhododendron machaka, and high 0.5-2m, branch is sparse, and branch is upright, close grey when young
White pubescence and thin bristle.Leaf papery, oblong to long round shape lanceolar, long 5-11cm, wide 1.5-3.5cm, apex is blunt, has short
Tip, base portion wedge shape, edge have eyelashes, when young above by micro- pubescence, below it is close by canescence pubescence, it is rigid by yellowish-brown along middle arteries
Hair, middle arteries and lateral vein protrusion, the long 2-6mm of petiole, by pubescence and a small number of bristles, total shape umbel basidixed spends up to 13, first
Hua Houye is opened simultaneously with leaf, and the long 1-2.5cm of bennet, by micro- pubescence and thin bristle, calyx lobes is small, crenation, by micro- soft
Hair and setiform eyelashes, the wealthy infundibulate of corolla, long 4.5cm, diameter 5-6cm, yellow or golden yellow, inside there is peony spot, flower
It is gradually narrow to base portion to be preced with pipe, cylindric, long 2.6cm, outside is by micro- pubescence, sliver 5, ellipse or ovate oblong, long 2.8cm,
Outside is by micro- pubescence, and stamen 5, Length discrepancy, long to be no more than corolla, filigree is flat, and by micro- pubescence below middle part, ovary is coniform,
Long 4mm, close by canescence pubescence and thin bristle, style is up to 6 centimetres, hairless.The coniform oblong of capsule, it is 2.5-3.5 lis long
Rice, has 5 longitudinal ribs, by micro- pubescence and thin bristle.
Azalea pontica is abounded in Hunan, Guangdong, Guangxi, one band of Sichuan, Guizhou and Yunnan, is easy to acquire, available as medicinal material
In treatment of arthritis, traumatic injury etc., but containing rib andromedotoxin and Chinese photinia element in Azalea pontica, chloroform extract is to a variety of important
Agricultural pests have stronger tag and antifeedant activity.Thus it can be used for preparing botanical pesticide.But traditional vegetalitas is killed
Worm agent is mostly used organic solvent or decocts to extract, and being unfavorable for energy conservation also has biggish environmental risk, also influences the stabilization of active material
Property even lose active material, and increase cost and make development and application difficulty larger, function and effect are slow, therefore give plant source
The research and development and production of insecticide bring huge financial difficulties.
Summary of the invention
It is an object of the invention to: in view of the above problems, providing a kind of pair of agricultural pests has preferable kill
Effect, the method for producing insecticide of the environment friendly and pollution-free energy and labour saving of production method, in addition to this, this method digests Azalea pontica
It is fermented afterwards using plant growth-promoting bacteria, the extraction of favorable activity substance avoids substance from inactivating, and is extracted and is extracted in Azalea pontica using chloroform
Active principle, further increase the killing of the insecticide.
In order to achieve the above-mentioned object of the invention, The technical solution adopted by the invention is as follows:
A method of insecticide is prepared by fermenting raw materials of Azalea pontica, comprising the following steps:
(1) feedstock processing: Azalea pontica is cleaned, and after the stifling softening of vapor, homogeneous forms yellow Du after being beaten
Cuckoo slurries, at the same fermentor clean up sterilizing it is spare;
(2) it digests: Azalea pontica slurries obtained in step (1) being placed in fermentor, and add cellulase thereto
It stirs evenly and is digested, obtain enzymolysis liquid;
(3) ferment: bacillus subtilis bacterium solution is added in the enzymolysis liquid in step (2), mixes and is sealed by fermentation after pressurization, filtering
Obtain fermentation liquid;
(4) it extracts: fermentation liquid obtained in step (3) is transferred in extractor, chloroform is added and is extracted, has extracted
It is distilled at rear heating and separates chloroform, until there is no substances to distill, remaining is extract liquor;
(5) emulsify powder processed: emulsifier is added in the extract liquor obtained to step (4), reacts 6~8h while stirring, is added and forms sediment
Powder, dispersing agent and suds carry out crushing and screening after being sufficiently mixed, and obtain insecticide pulvis.
Further, in step (1), the vapor stifling time is 15~30min, and the fermentor sterilizing is
Carry out 121 DEG C of 20~30min of high temperature sterilization.
Further, in step (2), the enzyme activity of the cellulase is 18000U/g, the enzymolysis time is 35~
45min。
Further, the additive amount of the bacillus subtilis bacterium solution is 2%, the bacteria containing amount in the bacillus subtilis bacterium solution
For 30~5,000,000,000/ml.
Further, in step (3), the pressure of the pressurization is 0.5~1MPa, and the fermentation temperature is 35~45
DEG C, fermentation time is 3~4 days.
Further, in step (4), the heating vapo(u)rizing temperature is 60~62 DEG C.
Further, the emulsifier is the one or more of lanolin fatty acid, beeswax or lecithin, and emulsifier additive amount is institute
State the 8~15% of extract liquor.
Further, the starch is cornstarch and tapioca with the mixture of 1:1, and the additional amount of starch is 180
~280 parts.
Further, the dispersing agent is microcrystalline wax, and the additive amount for changing dispersing agent is 1~8 part, the sieve of the screening
Mesh number is 80~100 mesh.
The present invention ferments Azalea pontica as Promoting bacteria to extract effective active composition, not only by using bacillus subtilis
Be conducive to the extraction of bioactive substance, and due in fermentation process without organic solvent and prolonged high-temperature process mistake
Journey does not easily cause the inactivation of effective component active material, advantageously ensures that the activity of the effective component of each raw material.Contain in Azalea pontica
You andromedotoxin and Chinese photinia element have stronger tag and antifeedant activity , andromedotoxin and Chinese photinia to a variety of important agricultural insects
Element includes Rhodomollein-Ⅲ, rhodojaponinⅢ, grayanotoxine Ⅲ, rhodojaponin III and mountain laurel terpene alcohol, these substances
Chloroform recovery can be passed through.Azalea pontica has strong toxicity to agricultural insect, mainly due in Azalea pontica rhodojaponinⅢ,
Grayanotoxin and mountain laurel toxin have antifeedant activity to the larva of colorado potato bug and Spodopterafrugiperda, wherein Rhododendron molle poison
The effect of element III is most significant.When contacting insect cuticle, it can be invaded in polypide by stomata and nervous system is made to be poisoned, if by
Insect eats, then is poisoned via digestive system, with fumigant using when can by stomata invade polypide reach desinsection
Purpose.
In conclusion by adopting the above-described technical solution, having the advantages that
(1) present invention in first by Azalea pontica fumigate it is soft after fermenting, be conducive to Azalea pontica release aromatic substance, and
It absorbs enough moisture to be easy to be beaten, recycles bacillus subtilis that Azalea pontica high pressure is fermented, make the small molecule object in Azalea pontica
Matter sufficiently releases, and is further extracted by chloroform and proposes Azalea pontica Zhong andromedotoxin and the extraction of Chinese photinia element, distilled
Pulvis insecticide is made after purification, the concentration of pest lethal substance can be made higher by purification by liquid extraction, pulvis is made convenient for spray
Being sprinkled upon on crops makes it contact agricultural pests or achieve the purpose that kill pest after being eaten by insect.
(2) softening is cooked by steam in the present invention and high pressure fermentation improves the fermentation rate of Azalea pontica, and in ingredient
It is upper that the active insecticidal components of Azalea pontica are prepared into pulvis by addition starch, dispersing agent and suds, it is easy when sprinkling
It in being adhered on plant, and is not easy to be walked by rain drop erosion, and raw material sources used in the present invention are extensive, cheap, preparation
Method is simple, economic and environment-friendly, has preferable economic benefit, can produce extensively.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, preferred embodiment is enumerated below, to this hair
Bright further description.However, it is necessary to illustrate, many details listed in specification are used for the purpose of making reader to this
The one or more aspects of invention have a thorough explanation, also may be implemented even without these specific details of the invention
These aspects.
Embodiment 1
A method of insecticide is prepared by fermenting raw materials of Azalea pontica, comprising the following steps:
(1) feedstock processing: Azalea pontica is cleaned, and after the stifling softening of vapor, homogeneous forms yellow Du after being beaten
Cuckoo slurries, while fermentor cleans up that sterilizing is spare, the vapor stifling time is 15min, the fermentor sterilizing for into
121 DEG C of row of high temperature sterilization 20min.
(2) it digests: Azalea pontica slurries obtained in step (1) being placed in fermentor, and add cellulase thereto
It stirs evenly and is digested, obtain enzymolysis liquid, the enzyme activity of cellulase is 18000U/g, and the enzymolysis time is 35min;
(3) ferment: bacillus subtilis bacterium solution, the additive amount of bacillus subtilis bacterium solution is added in the enzymolysis liquid in step (2)
It is 2%, the bacteria containing amount in the bacillus subtilis bacterium solution is 3,000,000,000/ml, mixes and is sealed by fermentation after pressurization, and the pressure of pressurization is
0.5MPa, the fermentation temperature are 35 DEG C, and fermentation time is 3 days, and fermentation liquid is obtained by filtration;
(4) it extracts: fermentation liquid obtained in step (3) is transferred in extractor, chloroform is added and is extracted, has extracted
It is distilled at rear heating and separates chloroform, heating vapo(u)rizing temperature is 60 DEG C, until there is no substances to distill, it is remaining for extraction
Liquid;
(5) emulsify powder processed: emulsifier is added in the extract liquor obtained to step (4), reacts 6~8h while stirring, is added and forms sediment
Powder, dispersing agent and suds carry out crushing and screening after being sufficiently mixed, and obtain insecticide pulvis, emulsifier be lanolin fatty acid, beeswax or
Lecithin it is one or more, emulsifier additive amount is the 8% of the extract liquor, and starch is cornstarch and tapioca with 1:
1 mixture, the additional amount of starch are 180 parts, and dispersing agent is microcrystalline wax, and the additive amount for changing dispersing agent is 1 part, the screening
Sieve mesh number be 80 mesh.
Embodiment 2
A method of insecticide is prepared by fermenting raw materials of Azalea pontica, comprising the following steps:
(1) feedstock processing: Azalea pontica is cleaned, and after the stifling softening of vapor, homogeneous forms yellow Du after being beaten
Cuckoo slurries, while fermentor cleans up that sterilizing is spare, the vapor stifling time is 30min, the fermentor sterilizing for into
121 DEG C of row of high temperature sterilization 30min.
(2) it digests: Azalea pontica slurries obtained in step (1) being placed in fermentor, and add cellulase thereto
It stirs evenly and is digested, obtain enzymolysis liquid, the enzyme activity of cellulase is 18000U/g, and the enzymolysis time is 45min;
(3) ferment: bacillus subtilis bacterium solution, the additive amount of bacillus subtilis bacterium solution is added in the enzymolysis liquid in step (2)
It is 2%, the bacteria containing amount in the bacillus subtilis bacterium solution is 5,000,000,000/ml, mixes and is sealed by fermentation after pressurization, and the pressure of pressurization is
1MPa, the fermentation temperature are 37 DEG C, and fermentation time is 4 days, and fermentation liquid is obtained by filtration;
(4) it extracts: fermentation liquid obtained in step (3) is transferred in extractor, chloroform is added and is extracted, has extracted
It is distilled at rear heating and separates chloroform, heating vapo(u)rizing temperature is 62 DEG C, until there is no substances to distill, it is remaining for extraction
Liquid;
(5) emulsify powder processed: emulsifier is added in the extract liquor obtained to step (4), reacts 6~8h while stirring, is added and forms sediment
Powder, dispersing agent and suds carry out crushing and screening after being sufficiently mixed, and obtain insecticide pulvis, emulsifier be lanolin fatty acid, beeswax or
Lecithin it is one or more, emulsifier additive amount is the 15% of the extract liquor, starch be cornstarch and tapioca with
The mixture of 1:1, the additional amount of starch are 280 parts, and dispersing agent is microcrystalline wax, and the additive amount for changing dispersing agent is 8 parts, the sieve
The sieve mesh number of choosing is 100 mesh.
Embodiment 3
A method of insecticide is prepared by fermenting raw materials of Azalea pontica, comprising the following steps:
(1) feedstock processing: Azalea pontica is cleaned, and after the stifling softening of vapor, homogeneous forms yellow Du after being beaten
Cuckoo slurries, while fermentor cleans up that sterilizing is spare, the vapor stifling time is 25min, the fermentor sterilizing for into
121 DEG C of row of high temperature sterilization 25min.
(2) it digests: Azalea pontica slurries obtained in step (1) being placed in fermentor, and add cellulase thereto
It stirs evenly and is digested, obtain enzymolysis liquid, the enzyme activity of cellulase is 18000U/g, and the enzymolysis time is 40min;
(3) ferment: bacillus subtilis bacterium solution, the additive amount of bacillus subtilis bacterium solution is added in the enzymolysis liquid in step (2)
It is 2%, the bacteria containing amount in the bacillus subtilis bacterium solution is 4,000,000,000/ml, mixes and is sealed by fermentation after pressurization, and the pressure of pressurization is
0.8MPa, the fermentation temperature are 40 DEG C, and fermentation time is 3~4 days, and fermentation liquid is obtained by filtration;
(4) it extracts: fermentation liquid obtained in step (3) is transferred in extractor, chloroform is added and is extracted, has extracted
It is distilled at rear heating and separates chloroform, heating vapo(u)rizing temperature is 61 DEG C, until there is no substances to distill, it is remaining for extraction
Liquid;
(5) emulsify powder processed: emulsifier is added in the extract liquor obtained to step (4), reacts 7h while stirring, be added starch,
Dispersing agent and suds carry out crushing and screening after being sufficiently mixed, and obtain insecticide pulvis, and emulsifier is lanolin fatty acid, beeswax or lecithin
Rouge it is one or more, emulsifier additive amount is the 8~15% of the extract liquor, and starch is cornstarch and tapioca with 1:
1 mixture, the additional amount of starch are 250 parts, and dispersing agent is microcrystalline wax, and the additive amount for changing dispersing agent is 5 parts, the screening
Sieve mesh number be 90 mesh.
Embodiment 4
A method of insecticide is prepared by fermenting raw materials of Azalea pontica, comprising the following steps:
(1) feedstock processing: Azalea pontica is cleaned, and after the stifling softening of vapor, homogeneous forms yellow Du after being beaten
Cuckoo slurries, while fermentor cleans up that sterilizing is spare, the vapor stifling time is 18min, the fermentor sterilizing for into
121 DEG C of row of high temperature sterilization 22min.
(2) it digests: Azalea pontica slurries obtained in step (1) being placed in fermentor, and add cellulase thereto
It stirs evenly and is digested, obtain enzymolysis liquid, the enzyme activity of cellulase is 18000U/g, and the enzymolysis time is 38min;
(3) ferment: bacillus subtilis bacterium solution, the additive amount of bacillus subtilis bacterium solution is added in the enzymolysis liquid in step (2)
It is 2%, the bacteria containing amount in the bacillus subtilis bacterium solution is 3,500,000,000/ml, mixes and is sealed by fermentation after pressurization, and the pressure of pressurization is
0.6MPa, the fermentation temperature are 42 DEG C, and fermentation time is 3~4 days, and fermentation liquid is obtained by filtration;
(4) it extracts: fermentation liquid obtained in step (3) is transferred in extractor, chloroform is added and is extracted, has extracted
It is distilled at rear heating and separates chloroform, heating vapo(u)rizing temperature is 60 DEG C, until there is no substances to distill, it is remaining for extraction
Liquid;
(5) emulsify powder processed: emulsifier is added in the extract liquor obtained to step (4), reacts 6~8h while stirring, is added and forms sediment
Powder, dispersing agent and suds carry out crushing and screening after being sufficiently mixed, and obtain insecticide pulvis, emulsifier be lanolin fatty acid, beeswax or
Lecithin it is one or more, emulsifier additive amount is the 10% of the extract liquor, starch be cornstarch and tapioca with
The mixture of 1:1, the additional amount of starch are 200 parts, and dispersing agent is microcrystalline wax, and the additive amount for changing dispersing agent is 3 parts, the sieve
The sieve mesh number of choosing is 85 mesh.
Embodiment 5
A method of insecticide is prepared by fermenting raw materials of Azalea pontica, comprising the following steps:
(1) feedstock processing: Azalea pontica is cleaned, and after the stifling softening of vapor, homogeneous forms yellow Du after being beaten
Cuckoo slurries, while fermentor cleans up that sterilizing is spare, the vapor stifling time is 25min, the fermentor sterilizing for into
121 DEG C of row of high temperature sterilization 25min.
(2) it digests: Azalea pontica slurries obtained in step (1) being placed in fermentor, and add cellulase thereto
It stirs evenly and is digested, obtain enzymolysis liquid, the enzyme activity of cellulase is 18000U/g, and the enzymolysis time is 40min;
(3) ferment: bacillus subtilis bacterium solution, the additive amount of bacillus subtilis bacterium solution is added in the enzymolysis liquid in step (2)
It is 2%, the bacteria containing amount in the bacillus subtilis bacterium solution is 4,500,000,000/ml, mixes and is sealed by fermentation after pressurization, and the pressure of pressurization is
0.8MPa, the fermentation temperature are 45 DEG C, and fermentation time is 4 days, and fermentation liquid is obtained by filtration;
(4) it extracts: fermentation liquid obtained in step (3) is transferred in extractor, chloroform is added and is extracted, has extracted
It is distilled at rear heating and separates chloroform, heating vapo(u)rizing temperature is 62 DEG C, until there is no substances to distill, it is remaining for extraction
Liquid;
(5) emulsify powder processed: emulsifier is added in the extract liquor obtained to step (4), reacts 7h while stirring, be added starch,
Dispersing agent and suds carry out crushing and screening after being sufficiently mixed, and obtain insecticide pulvis, and emulsifier is lanolin fatty acid, beeswax or lecithin
Rouge it is one or more, emulsifier additive amount is the 12% of the extract liquor, and starch is cornstarch and tapioca with 1:1's
Mixture, the additional amount of starch are 250 parts, and dispersing agent is microcrystalline wax, and the additive amount for changing dispersing agent is 6 parts, the screening
Sieve mesh number is 90 mesh.
Embodiment 6
It is directly digested after Azalea pontica is cleaned, not implementation steps (1), other implement consistent with embodiment 3.
Embodiment 7
The fermentation that Azalea pontica implementation steps (1) are directly carried out to step (3) afterwards, without the enzymatic hydrolysis of step (2), other realities
It is consistent to grant embodiment 3.
Embodiment 8
After Azalea pontica implementation steps (1)~step (3), other without step (4) are implemented with embodiment 3 unanimously.
Embodiment 9
Insecticide prepared in 1~embodiment of embodiment 8 in the present invention is subjected to insect killing effect test.
Specific test is as follows: it is 100 a to catch back cabbage butterfly, prodenia litura, Ostrinia furnacalis and diamondback moth in field, distinguishes
It being placed in transparent glass tube, glass jar both ends open is sealed using gauze, it is put into 5 dish leafs in each glass tube, number 1~8,
Dish leaf is stirred respectively and uniformly sprays the insecticide of the preparation of 1~embodiment of embodiment 8, and is lived glass mouthpiece cover using gauze, is seen
Examine the death condition of pest in glass jar, and after 48h simulate nature blowing rain carry out being blown into gentle breeze and with 200ml/
The flow of min sprays tap water 10min, the Mortality of insect after statistics spray after 72h, and every group of experiment in triplicate and is averaging
Value, the experimental results are shown inthe following table:
As seen from the above table, only implement the insecticide desinsection prepared fully according to test method of the invention in the present invention
Effect is good, fully according to step of the invention using the insecticide for not being both experiment parameter preparation in 1~embodiment of embodiment 5,
Insecticidal effect is all fine, does not have implementation steps (1) in embodiment 6, i.e., Azalea pontica is not cooked mashing, directly digested,
The active material being unfavorable in Azalea pontica discharges, and is not digested in embodiment 7, directly carries out fermentation and also results in active matter
Matter release not exclusively, do not extracted in two embodiments 8, cause preparation insecticide in effective component concentration it is low, cause to kill
Worm effect weakens significantly, so the insecticide for implementing preparation completely fully according to the step in the present invention is used for the pest of crops
Prevention and treatment, with the fast advantage of insecticide efficiency.
Embodiment 10
Insecticide obtained in 1~embodiment of embodiment 8 carry out the Related Component test of desinsection, the chlorine of Azalea pontica
It mainly include Rhodomollein-Ⅲ, rhodojaponinⅢ, grayanotoxine Ⅲ, rhodojaponin III and mountain laurel terpene in imitative extract liquor
Alcohol, wherein rhodojaponinⅢ is the main lethal ingredient of insect, tests and calculates extract liquor in 1~embodiment of embodiment 8
Recovery rate and rhodojaponinⅢ extraction efficiency, the recovery rate of extract liquor are the mass ratio that extract liquor accounts for raw material Azalea pontica, and make a noise sheep
Flower toxin III then detects its content in extract liquor by high performance liquid chromatography evaporative light-scattering detection method, wherein embodiment 8
Be content of the rhodojaponinⅢ in fermentation liquid, data are as shown in the table:
|
Recovery rate/% of extract liquor |
RhodojaponinⅢ content/% |
Embodiment 1 |
1.83 |
11.56 |
Embodiment 2 |
1.65 |
12.41 |
Embodiment 3 |
1.75 |
10.98 |
Embodiment 4 |
1.76 |
12.03 |
Embodiment 5 |
1.81 |
11.53 |
Embodiment 6 |
1.23 |
8.65 |
Embodiment 7 |
0.89 |
5.49 |
Embodiment 8 |
0 |
0.56 |
As seen from the above table, implement in 1~embodiment of embodiment 5 fully according to all steps in the present invention, extract
It is more to extract liquid hold-up, and the content of rhodojaponinⅢ is also more, insecticide effect is good.
In summary embodiment, only completely through the invention in the insecticide for preparing of all steps could utilize Huang
Cuckoo prepares the insecticide of effective powerful, and this method is scientific and reasonable, easy to accomplish, can be widely popularized.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered
It is considered as protection scope of the present invention.