Mosquito and fly attractant composition and preparation method thereof

Abstract

The invention discloses a mosquito and fly attractant composition and a preparation method thereof, and relates to the technical field of mosquito and fly attractants, the mosquito and fly attractant composition is prepared by stirring and mixing polylactic acid and polycaprolactone according to a ratio to obtain a slow-release polymer matrix, stirring and mixing purified water, acetophenone, lactic acid, mushroom alcohol and ethyl acetate according to a ratio to obtain a composition, and the mosquito and fly attractant composition is prepared by the following steps: preparing the mosquito and fly attractant composition. Stirring and mixing the first-class composition and pig blood powder in proportion to obtain a second-class composition, and stirring and mixing the second-class mixture and a slow-release polymer matrix in a container to obtain the mosquito and fly attractant composition. The attractant can continuously act for a long time, the requirement for frequent replacement is reduced, the use efficiency is improved, the attractant can keep the effect under different environment temperatures and humidity, the attractant is still effective under variable weather conditions, the preparation process of the attractant is optimized by adjusting the stirring speed and the mixing time so as to adapt to a specific use environment, and the attractant has good application prospects. And the optimal emission effect is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of mosquito and fly attractants, and more specifically, to a mosquito and fly attractant composition and a preparation method thereof. Background Art

[0002] Fly attractants are a combination of chemicals used to attract and control the number of flies and mosquitoes. They are widely used in agriculture, public health and domestic environments. Traditional fly attractants usually contain ingredients that can attract flies and mosquitoes, such as animal blood, protein and other attractants. However, due to the characteristics of animal blood and protein in the formula of mosquito and fly attractants, in the summer when the main usage season is summer, in order to pursue the attraction to mosquitoes and flies, the animal blood content in the formula is relatively high, and it is more likely to spoil and produce odor. Moreover, under the high temperature environment in the summer when the main usage season is summer, mosquito and fly attractants are more likely to evaporate and dry, thereby losing their effectiveness and needing to be replaced frequently. Although there is a method of adding sustained-release agents to the formula of mosquito and fly attractants, it cannot alleviate the dryness caused by water loss during the use of mosquito and fly attractants, and will not significantly extend the effective time. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a mosquito and fly attractant composition and a preparation method thereof.

[0004] The present invention provides a mosquito and fly attractant composition, characterized in that the mosquito and fly attractant composition comprises the following components: Acetophenone 0.25% to 0.75%, pig blood powder 93.5% to 94.5%, ethyl acetate 0.009% to 0.011%, lactic acid 0.1% to 0.15%, mushroom alcohol 0.25% to 0.75%, polylactic acid 0.1% to 0.3%, polycaprolactone 0.075% to 0.125% and the balance water.

[0005] Preferably, the present invention also provides a mosquito and fly attractant composition and a preparation method thereof, comprising the following steps: Step 1: Stirring and mixing polylactic acid and polycaprolactone according to a proportion to obtain a sustained-release polymer matrix; Step 2: stirring and mixing purified water, acetophenone, lactic acid, mushroom alcohol and ethyl acetate according to a proportion to obtain a first composition, and then stirring and mixing the first composition and pig blood powder according to a proportion to obtain a second composition; Step 3: stirring and mixing the two types of mixture and the slow-release polymer matrix in a container to obtain a mosquito and fly attractant composition; Step 4: Prepare a capsule using gelatin, fill the mosquito and fly attractant composition into the capsule, then process pores on the surface of the capsule, cover the pores with a tearable plastic film to seal the pores, and complete the preparation.

[0006] Preferably, the specific working steps of step 1 to step 3 also include the following: Acquire the external environment parameter data in the process of step 1 to step 3 in real time, the external environment parameter data specifically including the ambient temperature and ambient humidity; The preset stirring speed, stirring time, set temperature during stirring, and set humidity during stirring of each step of step one to step three are obtained, and the actual stirring speed and stirring time of each step of step one to step three are adjusted in real time according to the environmental parameter data obtained in real time.

[0007] Preferably, the specific steps of adjusting the actual stirring speed and stirring time of each step of step 1 to step 3 in real time according to the environmental parameter data obtained in real time are as follows: The real-time ambient temperature collected is marked as T, the real-time ambient humidity collected is marked as H, the set temperature during stirring is marked as r, the set humidity during stirring is marked as t, and the set stirring speed is marked as X; According to the formula , calculate the adjusted real-time stirring speed ; Mark the set mixing time as E; According to the formula , calculate the adjusted real-time mixing time ; After the stirring in the process of step 1 to step 3 begins, the adjusted real-time stirring speed is calculated. and adjusted real-time mixing time As the parameter for this stirring.

[0008] Preferably, the specific step of adjusting the actual stirring speed and stirring time of each step of step 1 to step 3 in real time according to the environmental parameter data obtained in real time also includes: Obtain the difference F between the real-time ambient temperature and the set temperature during stirring, and obtain the difference J between the real-time ambient humidity and the set humidity during stirring; If the difference F is within ±5% of the set temperature r during stirring, and the difference J is within ±5% of the set humidity t during stirring, then the adjusted real-time stirring speed calculated is and adjusted real-time mixing time As the parameters of this stirring, adjust the stirring speed and time to adapt to the temperature change; If the difference F exceeds ±5% of the set temperature r during stirring, or the difference J exceeds ±5% of the set humidity t during stirring, stirring and mixing are performed using the set temperature during stirring and the set humidity during stirring.

[0009] Preferably, the specific steps of step 4 include the following: First, gelatin is selected as the wall material, and the gelatin solution is dissolved and poured into a mold to obtain an initial capsule; Filling the mosquito and fly attractant composition as a core material into the initial capsule to obtain a capsule; The formed capsules are placed in an ice bath; Fine pores are processed on the surface of the capsule, and finally a tearable plastic film is covered on the outside of the pores to seal the pores to complete the preparation.

[0010] Preferably, the specific steps of machining pores on the capsule surface are: Determine the number and diameter of pores on the capsule surface; The capsule is fixed on the processing equipment, and the fine holes are processed according to the determined number and diameter of the fine holes.

[0011] Preferably, the specific steps of determining the number and diameter of pores on the capsule surface are: The average surface area S of the capsule is obtained according to the formula , calculated, where D is the diameter of the capsule; According to the formula The total area A of all pores is obtained by calculation, where b is the time and E is the ideal release rate; According to the formula , calculate and obtain the pore coverage C of the capsule surface; The diameter g of the pores is obtained according to the pore coverage C on the capsule surface and the average surface area S of the capsule; According to the formula , calculate and obtain the area of ​​a single pore; According to the formula , the number of pores is calculated .

[0012] Preferably, the specific method for obtaining the diameter g of the pores according to the pore coverage C on the capsule surface and the average surface area S of the capsule is as follows: According to the formula , the pore diameter d is calculated, where is the proportionality constant.

[0013] Preferably, the specific steps of covering the outside of the pore with a tearable plastic film for sealing are: According to the size and shape of the capsule, cut out the plastic film, and cover the surface of the capsule with the cut plastic film; The plastic film is fixed to the capsule surface using an adhesive.

[0014] Beneficial effects: It can have a strong attraction to mosquitoes and flies, effectively attracting target pests. The attractant is long-lasting and can continue to work for a long time, reducing the need for frequent replacement and improving the efficiency of use. The attractant can maintain its effect under different ambient temperatures and humidity, making it still effective under changing climatic conditions. By adjusting the stirring speed and mixing time, the preparation process of the attractant is optimized to adapt to the specific use environment and ensure the best dispersion effect. Specific steps are added to achieve the slow-release effect of the attractant, which not only enhances the attraction effect, but also extends the service life of the product and provides more lasting protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0016] Application scenarios: However, due to the characteristics of animal blood and protein in the formula of mosquito and fly attractants, in the summer, the main season of use, in order to pursue the attraction to mosquitoes and flies, the animal blood content in the formula is relatively high and is more prone to spoilage and odor. Moreover, in the high temperature environment of the summer, the main season of use, mosquito and fly attractants are more likely to evaporate and dry, thereby losing their effectiveness and needing to be replaced frequently. Although there is a method of adding sustained-release agents to the formula of mosquito and fly attractants, it cannot alleviate the dryness caused by water loss during the use of mosquito and fly attractants, and will not significantly extend the effective time.

[0017] like Figure 1 As shown: a mosquito and fly attractant composition, the mosquito and fly attractant composition comprises the following components: Acetophenone 0.25% to 0.75%, pig blood powder 93.5% to 94.5%, ethyl acetate 0.009% to 0.011%, lactic acid 0.1% to 0.15%, mushroom alcohol 0.25% to 0.75%, polylactic acid 0.1% to 0.3%, polycaprolactone 0.075% to 0.125% and the balance water.

[0018] It should be noted that pure water is used as a solvent to help dissolve and mix other components. Acetophenone is an attractant to attract mosquitoes and flies. Pig blood meal is the main component of the attractant, providing a protein source to attract mosquitoes and flies. Ethyl acetate can increase the attractant effect. Lactic acid can adjust the pH value to increase the attractant effect. Mushroom alcohol can increase the attractant effect. Polylactic acid is a sustained-release polymer to control the release rate of the attractant. Polycaprolactone is also a sustained-release polymer, which works together with polylactic acid to provide a more stable sustained-release effect. Gelatin is the capsule wall material used to encapsulate the attractant to achieve sustained release.

[0019] As an optional embodiment: The present invention also proposes a mosquito and fly attractant composition and a preparation method thereof, comprising the following steps: Step 1: Stirring and mixing polylactic acid and polycaprolactone according to a proportion to obtain a sustained-release polymer matrix; Step 2: stirring and mixing purified water, acetophenone, lactic acid, mushroom alcohol and ethyl acetate according to a proportion to obtain a first composition, and then stirring and mixing the first composition and pig blood powder according to a proportion to obtain a second composition; Step 3: stirring and mixing the two types of mixture and the slow-release polymer matrix in a container to obtain a mosquito and fly attractant composition; Step 4: Prepare a capsule using gelatin, fill the mosquito and fly attractant composition into the capsule, then process fine holes on the surface of the capsule, cover the outside of the fine holes with a tearable plastic film to seal the fine holes, and complete the preparation. It should be noted that processing fine holes on the surface of the capsule and using a tearable plastic film to seal the fine holes outside the fine holes facilitates the release of the mosquito and fly attractant composition inside, and the plastic film can be torn off when used; It should also be noted that by mixing polylactic acid and polycaprolactone to form a slow-release polymer matrix, this solution effectively controls the release rate of the active ingredients in the attractant, slows down the volatilization and drying process under high temperature conditions, thereby significantly extending the service life of the attractant, reducing the replacement frequency and reducing maintenance costs; Secondly, gelatin is used as the capsule wall material, and the mosquito and fly attractant composition is encapsulated by the complex coacervation method, which not only enhances the protection of the attractant ingredients and reduces the possibility of odor and spoilage, but also realizes the precise controlled release of the attractant through the fine pore design on the capsule surface, thereby improving the environmental adaptability and flexibility of use of the attractant. In addition, the tearable plastic film design on the outside of the capsule provides users with a convenient activation mechanism, so that the release of the attractant can be controlled according to actual needs.

[0020] As an optional embodiment: the specific working steps of step 1 to step 3 also include the following: The external environment parameter data in the process of step 1 to step 3 are obtained in real time, and the external environment parameter data specifically include the ambient temperature and the ambient humidity; it should be noted that the external environment parameter data is the ambient temperature and the ambient humidity in the current season and time when the mosquito and fly attractant is used, and is obtained by real-time collection through a temperature sensor and a humidity sensor; The preset stirring speed, stirring time, set temperature during stirring, and set humidity during stirring of each step of step 1 to step 3 are obtained, and the actual stirring speed and stirring time of each step of step 1 to step 3 are adjusted in real time according to the environmental parameter data obtained in real time. In the specific mixing process, environmental parameters such as temperature and humidity will affect the mixing process, and these parameters need to be monitored in real time, and the mixing parameters are adjusted according to the data; the mixing time and stirring speed can be dynamically adjusted according to the real-time monitored environmental temperature and humidity to maintain the best mixing effect. This method can improve the efficiency and uniformity of the mixing process and reduce the problem of uneven mixing caused by environmental changes.

[0021] As an optional embodiment: the specific steps of adjusting the actual stirring speed and stirring time of each step of step 1 to step 3 in real time according to the environmental parameter data obtained in real time are as follows: The real-time ambient temperature collected is marked as T, the real-time ambient humidity collected is marked as H, the set temperature during stirring is marked as r, the set humidity during stirring is marked as t, and the set stirring speed is marked as X; According to the formula , calculate the adjusted real-time stirring speed ; Mark the set mixing time as E; According to the formula , calculate the adjusted real-time mixing time ; After the stirring in the process of step 1 to step 3 begins, the adjusted real-time stirring speed is calculated. and adjusted real-time mixing time As the parameter of this stirring. It should be noted that the influence of temperature on stirring speed and mixing time is inversely proportional and directly proportional, because the mosquito and fly attractant composition is generally mixed at a set temperature and humidity. Although such a preparation method can ensure the best dissemination effect of the mosquito and fly attractant, in actual use, because the commonly used season is summer, the commonly used use environment generally has a higher temperature and humidity, which is too different from the preparation environment, resulting in the mosquito and fly attractant being dispersed too quickly in actual use; Therefore, it is necessary to change the temperature and humidity parameters of the mosquito and fly attractant composition under mixing based on the current external environmental parameters as a reference. However, when the temperature and humidity change, the corresponding stirring speed and stirring time also need to be adjusted accordingly. The present technical solution can stir and mix under the current external environmental parameters as needed, and try to fit the environmental parameters under the conditions of use, so that the emission of the mixed mosquito and fly attractant is in the best state.

[0022] As an optional embodiment: the specific step of adjusting the actual stirring speed and stirring time of each step of step 1 to step 3 in real time according to the environmental parameter data obtained in real time also includes: Obtain the difference F between the real-time ambient temperature and the set temperature during stirring, and obtain the difference J between the real-time ambient humidity and the set humidity during stirring; If the difference F is within ±5% of the set temperature r during stirring, and the difference J is within ±5% of the set humidity t during stirring, then the adjusted real-time stirring speed calculated is and adjusted real-time mixing time As the parameters of this stirring, adjust the stirring speed and time to adapt to the temperature change; If the difference F exceeds ±5% of the set temperature r during stirring, or the difference J exceeds ±5% of the set humidity t during stirring, the set temperature during stirring and the set humidity during stirring are used for stirring and mixing. It should be noted that, in special circumstances, the external environmental parameters are abnormal and exceed the preset parameters in the preparation process of the mosquito and fly attractant composition by too much, which may affect the mixing process of the mosquito and fly attractant composition. When the combined changes in temperature and humidity reach the level of any of the above-mentioned serious deviations, it is necessary to consider adjusting or optimizing the mixing process, and the set temperature during stirring and the set humidity during stirring are still used for stirring and mixing.

[0023] As an optional embodiment: the specific steps of step 4 include the following: First, gelatin is selected as the wall material, and the gelatin solution is dissolved and poured into a mold to obtain an initial capsule; Filling the mosquito and fly attractant composition as a core material into the initial capsule to obtain a capsule; The formed capsules are placed in an ice bath to accelerate the coagulation process; Fine pores are processed on the surface of the capsule, and finally a tearable plastic film is covered on the outside of the pores to seal the pores to complete the preparation.

[0024] As an optional embodiment: the specific steps of machining fine holes on the capsule surface are: Determine the number and diameter of the pores on the capsule surface; it should be noted that, in this embodiment, the capsule is spherical in shape, and the pores are evenly distributed on the capsule surface; The capsule is fixed on the processing equipment, and the fine holes are processed according to the determined number and diameter of the fine holes.

[0025] It should be noted that the design of the vibration frame and the capsule hole position can be adopted to keep the capsule stable during the processing.

[0026] As an optional embodiment: the specific steps of determining the number and diameter of the pores on the capsule surface are: The average surface area S of the capsule is obtained according to the formula , calculated, where D is the diameter of the capsule; According to the formula The total area A of all pores is obtained by calculation, where b is time and E is the ideal release rate. It should be noted that the ideal release rate refers to the rate at which the drug is released from the preparation under ideal conditions. The ideal release rate multiplied by the time can estimate the total amount of drug released through the pores in a specific period of time. According to the formula , calculate and obtain the pore coverage C of the capsule surface; the pore coverage C is between 0 and 1; The diameter g of the pores is obtained according to the pore coverage C on the capsule surface and the average surface area S of the capsule; According to the formula , calculate and obtain the area of ​​a single pore; According to the formula , the number of pores is calculated .

[0027] As an optional embodiment: the specific method for obtaining the diameter g of the pores according to the pore coverage C on the capsule surface and the average surface area S of the capsule is as follows: According to the formula , the pore diameter d is calculated, where is the proportionality constant.

[0028] The specific method of selecting the value of is to set the thresholds S1 and S2 of the average surface area S of the capsule. If the average surface area S of the capsule is less than the first threshold, the first proportional constant is used. 1 as To calculate the pore diameter; If the average surface area S of the capsule is greater than or equal to S1 but less than the second threshold S2, the second proportionality constant is used 2 as ; If the average surface area S of the capsule is greater than or equal to the second threshold S2, the third proportional constant is used 3 as , to calculate the pore diameter; In this way, it is possible to ensure that the diameter of the pores is proportional to the size of the capsule, thereby achieving better control of drug release. Smaller capsules will have smaller pore diameters to prevent too rapid drug release; while larger capsules can have larger pore diameters to accommodate greater drug release requirements. This design allows the pore diameter to be flexibly adjusted according to the size of different capsules to achieve the desired sustained release effect. The size of the capsule directly affects its surface area, thereby affecting the rate of drug release. Larger capsules may require larger pores to maintain the drug release rate, while smaller capsules may require smaller pores to control the release rate. The thresholds S1 and S2 of the average surface area S of the capsule are obtained through specific experiments, and the release data of the mosquito and fly attractant composition at different time points need to be obtained through release tests.

[0029] Using the collected data, a drug release curve is drawn; the X-axis (horizontal axis) of the drug release curve represents time, which can be minutes, hours, or days; The Y-axis of the drug release curve represents the amount or concentration of drug released; According to the release curve, two thresholds S1 and S2 can be determined. These two thresholds will correspond to different proportional constants. Threshold S1 is set at the point where the drug release curve begins to flatten out. This point usually corresponds to the turning point where the drug release rate begins to decrease. Threshold S2 is set at the later stage of the drug release curve, when the drug release is close to complete or reaches a plateau. This point corresponds to a stage where the drug release rate is very slow or almost zero. The three proportional constants are also verified and adjusted through implementation data. In this embodiment, the values ​​of S1 and S2 are 1 square centimeter and 2 square centimeters, and the corresponding three proportional constants are 0.034, 0.102 and 0.156 respectively.

[0030] As an optional embodiment: the specific steps of sealing the outside of the pore with a tearable plastic film are as follows: According to the size and shape of the capsule, cut out the plastic film, and cover the surface of the capsule with the cut plastic film; it should be noted that a suitable plastic film material is selected, such as polyethylene, polypropylene or polyester film, which has good sealing and transparency and is suitable for capsule packaging, and cutting tools such as scissors, paper cutters or automatic cutting machines are prepared to ensure the accuracy and efficiency of cutting; Design and make corresponding templates according to the specific size and shape of the capsule to ensure that the cut plastic film perfectly matches the capsule; Use the template and cutting tools to cut the plastic film into the desired shape and size, making sure the edges are flat and there is no excess material; Gently cover the surface of the capsule with the cut plastic film, making sure there are no bubbles or wrinkles between the film and the capsule; Use adhesive to fix the plastic film on the capsule surface. Choose suitable adhesives, such as hot melt adhesive, pressure sensitive adhesive or water-based adhesive, which should have good adhesion and aging resistance.

[0031] The following is further described according to specific embodiments: Embodiment 1

[0032] The mosquito and fly attractant composition comprises the following components by weight: 0.25% acetophenone, 93.5% pig blood powder, 0.009% ethyl acetate, 0.1% lactic acid, 0.25% mushroom alcohol, 0.1% polylactic acid, 0.075% polycaprolactone and the balance water; The preparation method of the mosquito and fly attractant composition is: Step 1: stirring and mixing polylactic acid and polycaprolactone according to a preset stirring time and stirring speed and a certain proportion to obtain a sustained-release polymer matrix; Step 2: according to a preset stirring time and stirring speed, pure water, acetophenone, lactic acid, mushroom alcohol and ethyl acetate are stirred and mixed in proportion to obtain a type one composition, and then the type one composition and pig blood powder are stirred and mixed in proportion to obtain a type two composition; Step 3: According to the preset stirring time and stirring speed, the two types of mixtures and the slow-release polymer matrix are stirred and mixed in a container to obtain a mosquito and fly attractant composition, thereby completing the preparation.

[0033] The temperature of the preparation in the above steps 1 to 3 is 25 degrees Celsius, the humidity is 40% RH, the preset stirring time is 15 minutes, and the preset stirring speed is 300r / min; Embodiment 2

[0034] The mosquito and fly attractant composition comprises the following components by weight: 0.5% acetophenone, 94% pig blood powder, 0.01% ethyl acetate, 0.125% lactic acid, 0.5% mushroom alcohol, 0.2% polylactic acid, 0.01% polycaprolactone and the balance water; The preparation method of the mosquito and fly attractant composition is: Step 1: stirring and mixing polylactic acid and polycaprolactone according to a preset stirring time and stirring speed and a proportion to obtain a sustained-release polymer matrix; Step 2: according to a preset stirring time and stirring speed, pure water, acetophenone, lactic acid, mushroom alcohol and ethyl acetate are stirred and mixed in proportion to obtain a type one composition, and then the type one composition and pig blood powder are stirred and mixed in proportion to obtain a type two composition; Step 3: stirring and mixing the two types of mixture and the slow-release polymer matrix in a container according to a preset stirring time and stirring speed to obtain a mosquito and fly attractant composition, thereby completing the preparation; The temperature and humidity in the above steps 1 to 3 are the same as those in Example 1, the preset stirring time is 15 minutes, and the preset stirring speed is 300 r / min; Embodiment 3

[0035] The mosquito and fly attractant composition comprises the following components by weight: 0.75% acetophenone, 94.5% pig blood powder, 0.011% ethyl acetate, 0.15% lactic acid, 0.75% mushroom alcohol, 0.3% polylactic acid, 0.125% polycaprolactone and the balance water; The preparation method of the mosquito and fly attractant composition is: Step 1: stirring and mixing polylactic acid and polycaprolactone according to a preset stirring time and stirring speed and a proportion to obtain a sustained-release polymer matrix; Step 2: according to a preset stirring time and stirring speed, pure water, acetophenone, lactic acid, mushroom alcohol and ethyl acetate are stirred and mixed in proportion to obtain a type one composition, and then the type one composition and pig blood powder are stirred and mixed in proportion to obtain a type two composition; Step 3: stirring and mixing the two types of mixture and the slow-release polymer matrix in a container according to a preset stirring time and stirring speed to obtain a mosquito and fly attractant composition, thereby completing the preparation; The temperature and humidity in the above steps 1 to 3 are the same as those in Example 1, the preset stirring time is 15 minutes, and the preset stirring speed is 300 r / min; Embodiment 4

[0036] The mosquito and fly attractant composition comprises the following components by weight: 0.75% acetophenone, 94.5% pig blood powder, 0.011% ethyl acetate, 0.15% lactic acid, 0.75% mushroom alcohol, 0.3% polylactic acid, 0.125% polycaprolactone and the balance water; Step 1: Adjust the real-time stirring speed and adjusted real-time mixing time Under the condition of stirring and mixing polylactic acid and polycaprolactone according to a proportion, a sustained-release polymer matrix is ​​obtained; Step 2: Adjust the real-time stirring speed and adjusted real-time mixing time Under the conditions of stirring and mixing purified water, acetophenone, lactic acid, mushroom alcohol and ethyl acetate in proportion to obtain a first composition, and stirring and mixing the first composition and pig blood powder in proportion to obtain a second composition; Step 3: Adjust the real-time stirring speed and adjusted real-time mixing time The two types of mixtures and the slow-release polymer matrix are stirred and mixed in a container to obtain a mosquito and fly attractant composition, thereby completing the preparation; The temperature in the above steps 1 to 3 is 25 degrees Celsius and the humidity is 40%RH. The ambient temperature in the current season is 30 degrees Celsius, that is, the use temperature and humidity is 50%RH. The adjusted real-time stirring speed and adjusted real-time mixing time Respectively through according to; formula ,formula , calculated, where The stirring speed is 300r / min in Example 3, T is the use temperature of the mosquito and fly attractant 30 degrees Celsius, r is the set temperature during stirring in Example 3 25 degrees Celsius, t is the set humidity during stirring in Example 3 40%RH, H is the use environment humidity of the mosquito and fly attractant, which is 50%RH, and the values ​​are all 0.2; in The preset stirring time is 15 min, and the value is 0.2; Substituting the data into the calculation, the stirring time is 12 minutes and the stirring speed is 241r / min; Embodiment 5

[0037] The mosquito and fly attractant composition comprises the following components by weight: 0.75% acetophenone, 94.5% pig blood powder, 0.011% ethyl acetate, 0.15% lactic acid, 0.75% mushroom alcohol, 0.3% polylactic acid, 0.125% polycaprolactone and the balance water; Step 1: At the same temperature and humidity, adjust the real-time stirring speed and adjusted real-time mixing time Under the condition of stirring and mixing polylactic acid and polycaprolactone according to a proportion, a sustained-release polymer matrix is ​​obtained; Step 2: At the same temperature and humidity, adjust the real-time stirring speed and adjusted real-time mixing time Under the conditions of stirring and mixing purified water, acetophenone, lactic acid, mushroom alcohol and ethyl acetate in proportion to obtain a first composition, and stirring and mixing the first composition and pig blood powder in proportion to obtain a second composition; Step 3: At the same temperature and humidity, adjust the real-time stirring speed and adjusted real-time mixing time The two types of mixtures and the slow-release polymer matrix are stirred and mixed in a container to obtain a mosquito and fly attractant composition, thereby completing the preparation; The same temperature is 25 degrees Celsius, the same humidity is 40%RH, the ambient temperature of the current season is 20 degrees Celsius, and the humidity is 30%RH. The adjusted real-time stirring speed and adjusted real-time mixing time Respectively through according to; formula ,formula , calculated, where The stirring speed is 300r / min in Example 3, T is the use temperature of the mosquito and fly attractant 20 degrees Celsius, r is the set temperature during stirring in Example 3 25 degrees Celsius, t is the set humidity during stirring in Example 3 40%RH, H is the use environment humidity of the mosquito and fly attractant, which is 30%RH, and the values ​​are all 0.2; in The preset stirring time is 15 min, and the value is 0.2; Substituting the data into the calculation, the stirring time is 19 minutes and the stirring speed is 378r / min; Embodiment 6

[0038] The mosquito and fly attractant composition comprises the following components by weight: 0.25% acetophenone, 93.5% pig blood powder, 0.009% ethyl acetate, 0.1% lactic acid, 0.25% mushroom alcohol, 0.1% polylactic acid, 0.075% polycaprolactone and the balance water; the mosquito and fly attractant composition is prepared according to the following steps when the ambient temperature of the mosquito and fly attractant is 35 degrees Celsius and the humidity is 60% RH; The preparation method of the mosquito and fly attractant composition is: Step 1: At the same temperature and humidity, adjust the real-time stirring speed and adjusted real-time mixing time Under the condition of stirring and mixing polylactic acid and polycaprolactone according to a proportion, a sustained-release polymer matrix is ​​obtained; Step 2: At the same temperature and humidity, adjust the real-time stirring speed and adjusted real-time mixing time Under the conditions of stirring and mixing purified water, acetophenone, lactic acid, mushroom alcohol and ethyl acetate in proportion to obtain a first type of composition, and stirring and mixing the first type of composition and pig blood powder in proportion to obtain a second type of composition; Step 3: At the same temperature and humidity, adjust the real-time stirring speed and adjusted real-time mixing time The two types of mixtures and the slow-release polymer matrix are stirred and mixed in a container to obtain a mosquito and fly attractant composition, thereby completing the preparation; The same temperature is 25 degrees Celsius and the same humidity is 40%RH. The adjusted real-time stirring speed and adjusted real-time mixing time Respectively through according to; formula ,formula , calculated, where The stirring speed is 300 r / min in Example 3, T is the use temperature of the mosquito and fly attractant 35 degrees Celsius, r is the set temperature of 25 degrees Celsius during stirring in Example 3, t is the set humidity of 40%RH during stirring in Example 3, H is the use environment humidity of the mosquito and fly attractant, which is 60%RH, and the values ​​are all 0.2; in The preset stirring time is 15 min, and the value is 0.2; Substituting the data into the calculation, the stirring time is 10 minutes and the stirring speed is 206r / min; Embodiment 7

[0039] The mosquito and fly attractant composition comprises the following components by weight: 0.25% acetophenone, 93.5% pig blood powder, 0.009% ethyl acetate, 0.1% lactic acid, 0.25% mushroom alcohol, 0.1% polylactic acid, 0.075% polycaprolactone and the balance water; the mosquito and fly attractant composition is prepared according to the following steps when the ambient temperature of the mosquito and fly attractant is 35 degrees Celsius and the humidity is 60% RH; The preparation method of the mosquito and fly attractant composition is: Step 1: At the same temperature and humidity, adjust the real-time stirring speed and adjusted real-time mixing time Under the condition of stirring and mixing polylactic acid and polycaprolactone according to a proportion, a sustained-release polymer matrix is ​​obtained; Step 2: At the same temperature and humidity, adjust the real-time stirring speed and adjusted real-time mixing time Under the conditions of stirring and mixing purified water, acetophenone, lactic acid, mushroom alcohol and ethyl acetate in proportion to obtain a first type of composition, and stirring and mixing the first type of composition and pig blood powder in proportion to obtain a second type of composition; Step 3: At the same temperature and humidity, adjust the real-time stirring speed and adjusted real-time mixing time Under the condition of stirring and mixing the two types of mixture and the slow-release polymer matrix in a container, a mosquito and fly attractant composition is obtained; The same temperature is 25 degrees Celsius and the same humidity is 40%RH. The adjusted real-time stirring speed and adjusted real-time mixing time Respectively through according to; formula ,formula , calculated, where The stirring speed is 300 r / min in Example 3, T is the use temperature of the mosquito and fly attractant 35 degrees Celsius, r is the set temperature of 25 degrees Celsius during stirring in Example 3, t is the set humidity of 40%RH during stirring in Example 3, H is the use environment humidity of the mosquito and fly attractant, which is 60%RH, and the values ​​are all 0.2; in The preset stirring time is 15 min, and the value is 0.2; Substituting the data into the calculation, the stirring time is 10 minutes and the stirring speed is 206r / min; Step 4: Prepare a capsule using gelatin, fill the mosquito and fly attractant composition into the capsule, then process pores on the surface of the capsule, cover the pores with a tearable plastic film to seal the pores, and complete the preparation.

[0040] Among them, Example 1, Example 2, and Example 3 are substantially the same, except that the formula percentage of the mosquito and fly attractant composition is different. Based on the comparison of Example 1, Example 2, and Example 3, the percentage range of the weight of the mosquito and fly attractant composition components that can meet the requirements of Example 3 can be obtained. The mosquito and fly attractant composition prepared based on the weight of the mosquito and fly attractant combination components has the advantages of strong attraction to mosquitoes and flies and long effective time; Example 4 is substantially the same as Example 3, except that although Example 3 is prepared at the same temperature and humidity, according to the preset stirring time and stirring speed, Example 4 limits the preset temperature to 30 degrees Celsius and the humidity to 50% RH. By comparison, the performance of mosquito and fly attractants prepared under different environments under different environments can be obtained; Example 5 is also substantially the same as Example 3 and Example 4, except that in Example 5, the preset temperature of the mosquito and fly attractant is limited to 35 degrees Celsius and the humidity is 60% RH; by comparing Example 4 with Example 5, it can be obtained that when the preparation conditions of the mosquito and fly attractant composition are different, the effects of using it under different environmental conditions are different, because the mosquito and fly attractant composition is generally mixed at a set temperature and humidity. Although such a preparation method can ensure the best dissemination effect of the mosquito and fly attractant, in actual use, because the commonly used season is summer, the commonly used use environment generally has a high temperature and humidity, which is too different from the preparation environment. The comparison between Example 4 and Example 5 can simulate this situation; The sixth embodiment is also substantially the same as the fifth embodiment, except that in the fifth embodiment, the temperature of the mosquito and fly attractant is limited to 35 degrees Celsius and the humidity is 60% RH, and the adjusted real-time stirring speed is used. and adjusted real-time mixing time To prepare; Embodiment 7 is also substantially the same as Embodiment 6, except that Embodiment 7 adds step 4, which can extend the use time and achieve a slow-release effect while ensuring the attraction effect of the mosquito and fly attractant composition; The performance test of the mosquito and fly attractant composition prepared in the above embodiment is carried out. The specific test method is to place the mosquito and fly attractant composition produced in different embodiments at the same position and the same height for testing, record the number of mosquitoes and flies attracted per hour, and use this value as the attraction. The time from the start of the test to the attraction being 20% ​​lower than the average attraction is taken as the duration. The test results are shown in the following table:

[0041] The multiple mosquito and fly attractant compositions prepared according to the above-mentioned Examples 1 to 5 were analyzed, and the attraction of the mosquito and fly attractant compositions prepared in Examples 1 to 3 was greater than 150 per hour, and the duration was longer than 10 hours. Therefore, based on the percentage range of the mass of the mosquito and fly attractant composition components inferred from Examples 1 to 3, the mosquito and fly attractant composition prepared in Example 3 can meet the specific performance requirements; It should be noted that, by comparing the fourth embodiment with the fifth embodiment, when the difference between the use environment temperature and the preparation temperature is too large, the duration of the mosquito and fly attractant will be affected; It is worth noting that, through the comparison between Example 5 and Example 6, when the difference between the ambient temperature and the preparation temperature is too large, Example 6 adopts the adjusted real-time stirring speed and adjusted real-time mixing time Mixing is performed, and stirring and mixing is performed according to the current external environmental parameters as needed, so that the duration of the mosquito and fly attractant returns to a normal range; It should also be noted that in the steps of Example 7, step 4 is added, which greatly increases the duration of the mosquito and fly attractant combination without affecting the attraction too much.

[0042] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technical staff in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of this template.

Claims

1. A mosquito and fly attractant composition, characterized in that: The mosquito and fly attractant composition comprises the following components: Acetophenone 0.25% to 0.75%, pig blood powder 93.5% to 94.5%, ethyl acetate 0.009% to 0.011%, lactic acid 0.1% to 0.15%, mushroom alcohol 0.25% to 0.75%, polylactic acid 0.1% to 0.3%, polycaprolactone 0.075% to 0.125% and the balance water.

2. The method for preparing a mosquito and fly attractant composition according to claim 1, characterized in that: The following steps are involved: Step 1: Stirring and mixing polylactic acid and polycaprolactone according to a proportion to obtain a sustained-release polymer matrix; Step 2: stirring and mixing purified water, acetophenone, lactic acid, mushroom alcohol and ethyl acetate according to a proportion to obtain a first composition, and then stirring and mixing the first composition and pig blood powder according to a proportion to obtain a second composition; Step 3: stirring and mixing the two types of mixture and the slow-release polymer matrix in a container to obtain a mosquito and fly attractant composition; Step 4: Prepare a capsule using gelatin, fill the mosquito and fly attractant composition into the capsule, then process pores on the surface of the capsule, cover the pores with a tearable plastic film to seal the pores, and complete the preparation.

3. The method for preparing a mosquito and fly attractant composition according to claim 2, characterized in that: The specific working steps of step 1 to step 3 also include the following: Acquire the external environment parameter data in the process of step 1 to step 3 in real time, the external environment parameter data specifically including the ambient temperature and ambient humidity; The preset stirring speed, stirring time, set temperature during stirring, and set humidity during stirring of each step of step one to step three are obtained, and the actual stirring speed and stirring time of each step of step one to step three are adjusted in real time according to the environmental parameter data obtained in real time.

4. The method for preparing a mosquito and fly attractant composition according to claim 3, characterized in that: The specific steps of adjusting the actual stirring speed and stirring time of each step from step 1 to step 3 in real time according to the environmental parameter data obtained in real time are as follows: The real-time ambient temperature collected is marked as T, the real-time ambient humidity collected is marked as H, the set temperature during stirring is marked as r, the set humidity during stirring is marked as t, and the set stirring speed is marked as X; According to the formula , calculate the adjusted real-time stirring speed ; Mark the set mixing time as E; According to the formula , calculate the adjusted real-time mixing time ; After the stirring in the process of step 1 to step 3 begins, the adjusted real-time stirring speed is calculated. and adjusted real-time mixing time As the parameter for this stirring.

5. The method for preparing a mosquito and fly attractant composition according to claim 4, characterized in that: The specific step of adjusting the actual stirring speed and stirring time of each step from step 1 to step 3 in real time according to the environmental parameter data obtained in real time also includes: Obtain the difference F between the real-time ambient temperature and the set temperature during stirring, and obtain the difference J between the real-time ambient humidity and the set humidity during stirring; If the difference F is within ±5% of the set temperature r during stirring, and the difference J is within ±5% of the set humidity t during stirring, then the adjusted real-time stirring speed calculated is and adjusted real-time mixing time As the parameters of this stirring, adjust the stirring speed and time to adapt to the temperature change; If the difference F exceeds ±5% of the set temperature r during stirring, or the difference J exceeds ±5% of the set humidity t during stirring, stirring and mixing are performed using the set temperature during stirring and the set humidity during stirring.

6. The method for preparing a mosquito and fly attractant composition according to claim 2, characterized in that: The specific steps of step 4 include the following: First, gelatin is selected as the wall material, and the gelatin solution is dissolved and poured into a mold to obtain an initial capsule; Filling the mosquito and fly attractant composition as a core material into the initial capsule to obtain a capsule; The formed capsules are placed in an ice bath; Fine pores are processed on the surface of the capsule, and finally a tearable plastic film is covered on the outside of the pores to seal the pores to complete the preparation.

7. The method for preparing a mosquito and fly attractant composition according to claim 6, characterized in that: The specific steps of processing fine holes on the capsule surface are: Determine the number and diameter of pores on the capsule surface; The capsule is fixed on the processing equipment, and the fine holes are processed according to the determined number and diameter of the fine holes.

8. The method for preparing a mosquito and fly attractant composition according to claim 7, characterized in that: The specific steps of determining the number and diameter of the pores on the capsule surface are: The average surface area S of the capsule is obtained according to the formula , calculated, where D is the diameter of the capsule; According to the formula The total area A of all pores is obtained by calculation, where b is the time and E is the ideal release rate; According to the formula , calculate and obtain the pore coverage C of the capsule surface; The diameter g of the pores is obtained according to the pore coverage C on the capsule surface and the average surface area S of the capsule; According to the formula , calculate and obtain the area of ​​a single pore; According to the formula , the number of pores is calculated .

9. The method for preparing a mosquito and fly attractant composition according to claim 8, characterized in that: The specific method for obtaining the diameter g of the pores according to the pore coverage C on the capsule surface and the average surface area S of the capsule is as follows: According to the formula , the pore diameter d is calculated, where is the proportionality constant.

10. The method for preparing a mosquito and fly attractant composition according to claim 6, characterized in that: The specific steps of sealing the outer part of the pore with a tearable plastic film are as follows: According to the size and shape of the capsule, cut out the plastic film, and cover the surface of the capsule with the cut plastic film; The plastic film is fixed to the capsule surface using an adhesive.

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