Mosquito-luring composition, preparation method and application thereof, and mosquito-luring agent

Abstract

The invention belongs to the technical field of plant source attractant production, and relates to a mosquito trapping composition which comprises the following components in percentage by mass: 10-20% of 2-undecanone, 10-15% of n-tetradecane, 10-30% of a first functional component, 15-30% of a second functional component, 2-10% of a third functional component and the balance of pure water, wherein the first functional component is selected from at least one of aldehyde and tea flavor ketone; the second functional component is selected from at least one of methyl heptenone, hexanol and acetoin; the third functional component is selected from yeast powder and glucose.

Description

Technical Field

[0001] The invention relates to the technical field of daily chemical product production, and in particular to a mosquito attractant composition and a preparation method, application and mosquito attractant thereof. Background Art

[0002] Mosquitoes are the main vectors of diseases such as malaria, dengue fever, and Zika virus. Developing an efficient, environmentally friendly, and safe mosquito attractant to control the breeding and spread of mosquitoes has important social and economic benefits.

[0003] In the current market, mosquito attractant products mainly include two categories: chemical synthetic agents and natural plant extracts. Although chemical synthetic agents such as pyrethroid mosquito attractants and organophosphorus mosquito attractants have good mosquito attractant effects, they have problems such as environmental pollution and harm to human health. Natural plant extracts such as peppermint oil and citronella oil are relatively environmentally friendly, but their mosquito attractant effects and stability are relatively poor, and the extraction cost is relatively high.

[0004] In terms of product formulation, the existing technology mainly uses a single or mixed chemical synthetic agent as a mosquito attractant, or a single or mixed natural plant extract as a mosquito attractant. In terms of preparation technology, the existing technology generally uses solvent extraction, distillation, cold soaking and other methods for preparation. In terms of product application, the existing technology is mainly used in homes, fields, farmlands and other places; However, the problems and shortcomings of the existing technologies include that chemical synthetic agents cause serious environmental pollution and are harmful to human health. Long-term contact or inhalation of chemical synthetic agents may cause health problems such as dizziness, nausea, and allergies; the mosquito attracting effect and stability of natural plant extracts are relatively poor. Due to the complex composition of natural plant extracts, the quality and effect between different batches may vary greatly, and they are easily affected by the environment, resulting in unstable mosquito attracting effect; the extraction cost is high, and a large amount of solvents and energy are required in the extraction process of natural plant extracts, and the extraction efficiency is low, resulting in high extraction costs; the product formula and preparation process of the existing technology are relatively simple, and cannot meet the market demand for efficient, environmentally friendly, safe, and low-cost mosquito attractants; Therefore, developing a mosquito attractant that is both highly effective in attracting mosquitoes and environmentally friendly, safe, and low-cost has become a hot topic and difficulty in current research.

[0005] Chinese patent application 200610116278.0 discloses a mosquito attractant containing 80-97% by weight of 1-octen-3-ol; toxicity tests have shown that the mosquito attractant of this scheme is less toxic and harmless to the human body. The mosquito attractant of this scheme has the advantages of being easy to prepare, convenient, and able to effectively attract mosquitoes, thereby killing mosquitoes; Further observation of the specification of the scheme shows that, in addition to 80-97% of 1-octen-3-ol, the scheme also includes other organic additives such as 3-undecanone, 3-dodecanone, 3-tridecanone, 3-tetradecanone, 3-pentadecanone, 3-hexadecaneone, 3-heptadecanone, 3-octadecanone, and 3-icosanone; Furthermore, Chinese patent application 201510876006.X discloses an attractant for adult grubs, comprising the following weight ratios: 1 to 10 plant volatiles, 10 to 70 sugars, and 30 to 90 water. This solution mixes plant volatiles and sugar substances in a certain ratio, releases information substances that are more attractive than crops, and attracts adult beetles of grubs to feed on specific flavor sources in a broad spectrum and high efficiency, effectively controlling and suppressing the number of grub populations, greatly reducing the use of chemical pesticides, being green, pollution-free, and residue-free, protecting natural enemies and the environment, and achieving green prevention and control of grubs; Further observation of the scheme shows that the sugars are selected from a variety of sugars including glucose, and the plant extracts also include a variety of aldehydes, such as octanal, phenylacetaldehyde, etc.; Chinese patent application 202410136811.8 discloses an attractant composition for adults of Drosophila suzukii and its application, which discloses the use of ethanol and acetoin in attractants; Chinese patent application 201811465076.6 discloses a rice leaf roller attractant and its application, which discloses the use of n-tetradecane as an attractant.

[0006] Chinese patent application 201911097757.6 discloses plant-derived pollution-free active substances, attractants and methods for attracting green bean weevils, which discloses the use of methyl heptenone as an attractant.

[0007] The problem to be solved in this scheme is: how to develop an environmentally friendly and efficient mosquito attractant composition. Summary of the invention

[0008] One of the purposes of the present application is to provide an environmentally friendly and efficient mosquito attractant composition, wherein the mosquito attractant composition has good mosquito attractant efficiency while having environmentally friendly properties by using ingredients such as 2-undecanone, n-tetradecane, hexanal, methyl heptenone, hexanol, and acetoin. Another object of the present application is to provide a method for preparing the above-mentioned mosquito attractant composition; In addition, the present application also discloses the application of the above-mentioned mosquito attractant composition and a mosquito attractant.

[0009] To achieve the above-mentioned purpose, the present application discloses a mosquito attractant composition, which comprises the following components by mass fraction: 2-undecanone 10-20%; n-Tetradecane 10-15%; The first effective ingredient is 10-30%; The second effective ingredient is 15-30%; The third effective ingredient 2-10%; Pure water was added to 100%; The first effective ingredient is selected from at least one of hexaldehyde and tea ketone; The second functional ingredient is selected from at least one of methyl heptenone, hexanol, and acetoin; The third effective ingredient is selected from yeast powder and glucose.

[0010] 2-Undecanone belongs to this class of VOCs that can mimic the odor of human skin, tricking mosquitoes into thinking that a human host is nearby, and thus attracting them to areas where mosquito attractants are placed; n-Tetradecane is volatile and can slowly release other more effective attractant substances, thereby extending the service life and effectiveness of mosquito attractants; in addition, n-tetradecane can also help regulate the release rate of other attractants, making the overall formula more durable and stable. Hexanal is a volatile organic compound with a strong odor and a molecular formula of C6H 12 O, hexanal occurs naturally in a variety of plants and fruits, and its green odor has been described as the scent of freshly cut grass or green apples; Methyl heptenone, chemical name 3-methyl-3-penten-2-one, molecular formula C8H 14 O, an organic compound with a clear lemon-like odor, is widely found in the essential oils of citrus fruits and certain plants; Hexanol is an organic compound with a distinct odor and a molecular formula of C6H 14 O, mosquitoes rely on their olfactory system to find hosts, especially by detecting volatile organic compounds. Hexanol has a unique odor that can stimulate the mosquito's olfactory receptors, thereby guiding the mosquito to the trap source; Acetoin is an organic compound with a strong odor, the molecular formula is C4H8O2, the odor of acetoin can simulate the volatile organic compounds emitted by certain hosts (such as human and animal skin). This simulation can effectively lure mosquitoes, making them think there is a potential source of blood meal; Preferably, the first effective ingredient is a mixture of hexanal and tea ketone; The second functional ingredient is a mixture of methyl heptenone, hexanol and acetoin; The third effective ingredient is a mixture of yeast powder and glucose.

[0011] Preferably, the following components are included by mass fraction: 2-undecanone 10-20%; n-Tetradecane 10-15%; Hexanal 5-15%; Tea aroma ketone 5-15%; Methyl heptenone 5-10%; Hexanol 5-10%; Acetoin 5-10%; Yeast powder 1-5%; Glucose 1-5%; Add pure water to 100%.

[0012] Preferably, the following components are included by mass fraction: 2-undecanone 12-16%; n-Tetradecane 10-14%; Hexanal 6-8%; Tea ketone 12-14%; Methyl heptenone 7-9%; Hexanol 5-7%; Acetoin 6-8%; Yeast powder 1-3%; Glucose 1-3%; Add pure water to 100%.

[0013] In addition, the present application also discloses a method for preparing the above-mentioned mosquito attractant composition, wherein 2-undecanone, n-tetradecane, a first functional ingredient, a second functional ingredient, a third functional ingredient, and pure water are mixed to obtain the mosquito attractant composition.

[0014] Preferably, the steps include: Step 1: Add glucose into water and dissolve it to obtain intermediate solution 1; Step 2: Add acetoin to the intermediate solution 1 and mix well to obtain the intermediate solution 2; Step 3: Mix 2-undecanone, n-tetradecane, hexanal, tea aromatic ketone, methyl heptenone, hexanol and the intermediate solution 2 to obtain the intermediate solution 3; Step 4: Add yeast powder into the intermediate liquid 3 and stir to obtain a mosquito attractant composition.

[0015] In addition, the present application also discloses the use of the mosquito attractant composition as described above in mosquito attractants.

[0016] In addition, the present application also discloses a mosquito attractant containing 10 to 100 wt % of the mosquito attractant composition as described above.

[0017] Further preferably, the mosquito attractant is in any one of a gel type, an aerosol type, and a solution type. The beneficial effects of this application are: In the present application, 2-undecanone belongs to this type of volatile organic compound, which can simulate the odor of human skin and deceive mosquitoes into mistaking that there is a human host nearby, thereby being attracted to the area where mosquito attractants are arranged; n-Tetradecane is volatile and can slowly release other more effective attractant substances, thereby extending the service life and effectiveness of mosquito attractants; in addition, n-tetradecane can also help regulate the release rate of other attractants, making the overall formula more durable and stable. Hexanal is a volatile organic compound with a strong odor and a molecular formula of C6H 12 O, hexanal occurs naturally in a variety of plants and fruits, and its green odor has been described as the scent of freshly cut grass or green apples; Methyl heptenone, chemical name 3-methyl-3-penten-2-one, molecular formula C8H 14 O, an organic compound with a clear lemon-like odor, is widely found in the essential oils of citrus fruits and certain plants; Hexanol is an organic compound with a distinct odor and a molecular formula of C6H 14 O, mosquitoes rely on their olfactory system to find hosts, especially by detecting volatile organic compounds. Hexanol has a unique odor that can stimulate the mosquito's olfactory receptors, thereby guiding the mosquito to the trap source; Acetoin is an organic compound with a strong odor, the molecular formula is C4H8O2, the odor of acetoin can simulate the volatile organic compounds emitted by certain hosts (such as human and animal skin). This simulation can effectively lure mosquitoes, making them think there is a potential source of blood meal; Furthermore, the present application uses a compound of the above-mentioned raw materials to make the mosquito attractant have both environmental protection properties and high mosquito attracting efficiency. DETAILED DESCRIPTION

[0018] The present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. In the description of the present invention, it should be noted that, if no specific conditions are specified in the embodiments, the conditions are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer of the reagents or instruments used is not specified, they are all conventional products that can be purchased commercially.

[0019] Before presenting the examples, the sources of the raw materials used in the examples are described below, as shown in Table 1: Table 1 raw material source raw material source 2-Undecanone Shanghai BiDe Pharmaceutical Technology Co., Ltd. Hexanol Shanghai BiDe Pharmaceutical Technology Co., Ltd. n-Tetradecane Shanghai BiDe Pharmaceutical Technology Co., Ltd. Acetoin Shanghai MacLean Biochemical Technology Co., Ltd. Hexanal Shanghai Aladdin Biochemical Technology Co., Ltd. Yeast powder Angel Yeast Co., Ltd. Tea Fragrance Ketone Shanghai BiDe Pharmaceutical Technology Co., Ltd. glucose Shanghai MacLean Biochemical Technology Co., Ltd. Methyl Heptenone Shanghai BiDe Pharmaceutical Technology Co., Ltd. Unless otherwise specified, the preparation methods of the following embodiments and comparative examples include the following steps: Step 1: Add glucose into water and dissolve it to obtain intermediate solution 1; Step 2: Add acetoin to the intermediate solution 1 and mix well to obtain the intermediate solution 2; Step 3: Mix 2-undecanone, n-tetradecane, hexanal, tea aromatic ketone, methyl heptenone, hexanol and the intermediate solution 2 to obtain the intermediate solution 3; Step 4: adding yeast powder to the intermediate solution 3 and stirring to obtain a mosquito attractant composition; It should be noted that hexanal and tea ketone are used as the first effective ingredients in the mosquito attractant composition; Methyl heptenone, hexanol and acetoin are used as the second effective ingredient in the mosquito attractant composition; Yeast powder and glucose are used as the third effective ingredient in the mosquito attractant composition; The specific addition amount of each raw material is shown in the detailed formula table of the embodiments and comparative examples. Embodiments 1 to 5 A mosquito attractant composition, the formula of which is shown in Table 2: Table 2 Group Example 1 Example 2 Example 3 Example 4 Example 5 2-Undecanone 16% 12% 14% 10% 20% n-Tetradecane 10% 14% 12% 15% 13% Hexanal 8% 6% 7% 15% 5% Tea Fragrance Ketone 14% 12% 13% 5% 15% Methyl Heptenone 7% 9% 8% 10% 5% Hexanol 5% 7% 6% 5% 15% Acetoin 6% 8% 7% 15% 5% Yeast powder 1% 1% 1% 3% 5% glucose 3% 3% 3% 5% 1% Pure water Add to 100% Add to 100% Add to 100% Add to 100% Add to 100% Embodiments 6 to 12 A mosquito attractant composition, the formula of which is shown in Table 3: Table 3 Group Example 6 Example 7 Example 8 Example 9 Example 10 Embodiment 11 Example 12 Embodiment 13 2-Undecanone 16% 16% 16% 16% 16% 16% 16% 16% n-Tetradecane 10% 10% 10% 10% 10% 10% 10% 10% The first effective ingredient 22% 22% 22% 22% 22% 22% 22% 22% Second active ingredient 18% 18% 18% 18% 18% 18% 18% 18% The third active ingredient 4% 4% 4% 4% 4% 4% 4% 4% Pure water Add to 100% Add to 100% Add to 100% Add to 100% Add to 100% Add to 100% Add to 100% Add to 100% It should be noted that, except for the first functional ingredient, the other raw materials and addition amounts in Example 6 are the same as those in Example 1, and the first functional ingredient in Example 6 is hexanal; In Example 7, except for the first functional ingredient, the other raw materials and addition amounts are the same as those in Example 1. The first functional ingredient in Example 7 is tea ketone; In Example 8, except for the second functional ingredient, the other raw materials and addition amounts are the same as those in Example 1. The second functional ingredient in Example 8 is methyl heptenone; In Example 9, except for the second functional ingredient, the other raw materials and addition amounts are the same as those in Example 1. The second functional ingredient in Example 9 is hexanol; In Example 10, except for the second functional ingredient, the other raw materials and addition amounts are the same as those in Example 1. The second functional ingredient in Example 10 is acetoin; In Example 11, except for the third functional ingredient, the other raw materials and addition amounts are the same as those in Example 1. The third functional ingredient in Example 11 is yeast powder; In Example 12, except for the third functional ingredient, the other raw materials and addition amounts are the same as those in Example 1. The third functional ingredient in Example 12 is glucose; In Example 13, the first effective ingredient is specifically hexanal, the second effective ingredient is specifically hexanol, and the third effective ingredient is specifically glucose. Comparative Examples 1 to 5 A mosquito attractant composition, the formula of which is shown in Table 4: Table 4 Group Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 2-Undecanone 0 16% 16% 16% 16% n-Tetradecane 10% 0 10% 10% 10% Hexanal 8% 8% 0 8% 8% Tea Fragrance Ketone 14% 14% 0 14% 14% Methyl Heptenone 7% 7% 7% 0 7% Hexanol 5% 5% 5% 0 5% Acetoin 6% 6% 6% 0 6% Yeast powder 1% 1% 1% 1% 0 glucose 3% 3% 3% 3% 0 Pure water Add to 100% Add to 100% Add to 100% Add to 100% Add to 100% Comparative Examples 6 to 10 A mosquito attractant composition, the formula of which is shown in Table 5: Table 5 Group Comparative Example 6 Comparative Example 7 Comparative Example 8 Comparative Example 9 Comparative Example 10 2-Undecanone 0 16% 16% 16% 16% n-Tetradecane 10% 0 10% 10% 10% Hexanal 8% 8% 0 8% 8% Tea Fragrance Ketone 14% 14% 0 14% 14% Methyl Heptenone 7% 7% 7% 0 7% Hexanol 5% 5% 5% 0 5% Acetoin 6% 6% 6% 0 6% Yeast powder 1% 1% 1% 1% 0 glucose 3% 3% 3% 3% 0 Pure water Add to 100% Add to 100% Add to 100% Add to 100% Add to 100% 3-Undecanone 16% 0 0 0 0 n-Dodecane 0 10% 0 0 0 Phenylacetaldehyde 0 0 22% 0 0 Phenylethyl alcohol 0 0 0 18% 0 Mannose 0 0 0 0 4% Mosquito attractant effectiveness test method: Blank experiment Place a suction mosquito killer (Glin Yinglu GM916) and a bottle of sugar water (for mosquitoes to suck) in the center of a 5m³ mosquito net. Two groups are made in parallel. No mosquito attractants are added to the two mosquito killers. 40 female Aedes albopictus that have emerged for 4 to 6 days and are waiting to suck blood are released in each mosquito net. After the mosquitoes are stable (about 10 minutes), turn on the equipment. The test time is 24 hours. After 24 hours, take out the mosquito killer and count. After the counting is completed, make up the number of Aedes mosquitoes in the mosquito net to 40. This cycle is tested for a total of 72 hours, and then the total number of mosquitoes killed by the two mosquito killers is calculated. There is no statistical difference in the number of mosquitoes caught by the two mosquito killers. Then these two mosquito killers can be used for the mosquito attractant effect test experiment.

[0020] Comparative experiment on the effect of mosquito attractants on attracting mosquitoes A mosquito killer with mosquito attractants added that passed the blank experiment was placed in the center of a 5m³ mosquito net, and a mosquito killer without mosquito attractants was placed in the center of another 5m³ mosquito net. 40 female Aedes albopictus that had emerged 4 to 6 days ago and were waiting to suck blood were released in each mosquito net. The equipment was turned on after the mosquitoes became active (about 10 minutes). The test time was 24 hours. After 24 hours, the mosquito killer was taken out and counted. After the counting was completed, the number of Aedes mosquitoes in the mosquito net was supplemented to 40. This cycle was repeated for a total of 72 hours, and then the total number of mosquitoes killed by the two mosquito killers was calculated.

[0021] By using this method, the mosquito attracting effects of the mosquito attractants of Examples 1 to 13 and Comparative Examples 1 to 10 were compared and tested respectively; The mosquito attraction rate = (the number of Aedes mosquitoes captured by the mosquito killer with mosquito attractants - the number of Aedes mosquitoes captured by the mosquito killer without mosquito attractants) / the number of Aedes mosquitoes captured by the mosquito killer without mosquito attractants × 100% The test results of the mosquito attractant tested in the experiment are shown in Table 6: Table 6 Group Number of Aedes mosquitoes captured by mosquito traps with mosquito attractants Number of Aedes mosquitoes captured by mosquito traps without mosquito attractants Mosquito trapping rate Example 1 111 36 208.33% Example 2 102 38 168.42% Example 3 103 39 164.10% Example 4 102 38 168.42% Example 5 101 38 165.79% Example 6 100 42 138.10% Example 7 86 36 138.89% Example 8 91 39 133.33% Example 9 100 43 132.56% Example 10 89 37 140.54% Embodiment 11 91 38 139.47% Example 12 104 44 136.36% Embodiment 13 94 40 135.00% Comparative Example 1 69 39 76.92% Comparative Example 2 64 42 52.38% Comparative Example 3 66 40 65.00% Comparative Example 4 67 45 48.89% Comparative Example 5 60 38 57.89% Comparative Example 6 62 37 67.57% Comparative Example 7 63 43 46.51% Comparative Example 8 68 36 88.89% Comparative Example 9 65 40 62.50% Comparative Example 10 61 37 64.86% Result analysis: 1. It can be seen from Examples 1 to 5 that when the addition amount of each component in the mosquito attractant composition is slightly adjusted, the mosquito attractant improvement rate of Examples 1 to 5 shows a certain degree of fluctuation trend, and the mosquito attractant improvement rate of Example 1 is more significant than that of Examples 2 to 5. It can be seen that Example 1 is the best formula among Examples 1 to 5. At the same time, the mosquito attractant improvement rate of Examples 2 to 5 is not as good as that of Example 1, but is still relatively more than 100%; 2. It can be seen from Examples 6 to 12 that when any one of the first functional ingredient, the second functional ingredient, and the third functional ingredient is composed of a single component, any one of Examples 6 to 12 has a significant downward trend relative to Example 1; Furthermore, it can be seen from the observation of Examples 6 to 7 that only the first effective ingredient of the two is a single component, and the difference between Example 1 and Examples 6 to 7 is only that the components constituting the first effective ingredient are different, and the components constituting the first effective ingredient in Example 1 are a combination of Examples 6 and 7. According to the trend presented in Examples 6 to 7, the mosquito attraction enhancement rate of Example 1 should be similar to that of Example 1, but Example 1 is significantly higher than Examples 6 and 7. It can be seen that there is a synergistic effect between hexanal and tea ketone, which significantly improves the mosquito attraction enhancement rate of Example 1. Similarly, similar phenomena are observed between Example 1 and Examples 8-10, and between Example 1 and Examples 11-12; It can be seen that there is a synergistic effect between methyl heptenone, hexanol, and acetoin; and between yeast powder and glucose. At the same time, based on Examples 6 to 12, even if any two functional ingredients in the above examples are the same as those in Example 1, but any functional ingredient is a single component, Examples 6 to 12 still cannot achieve performance close to that of Example 1. It can be seen that only when the three functional ingredients are composite components, the synergistic effect between the components can be effectively stimulated. 3. It can be seen from Example 1 and Comparative Examples 1 to 5 that when any one of 2-undecanone, n-tetradecane, the first functional component, the second functional component, and the third functional component is missing, the mosquito attracting improvement rate of Comparative Examples 1 to 5 all has a significant downward trend. It can be seen that in the present application, any of the above components is indispensable; It can be seen from Example 1 and Comparative Examples 6 to 10 that when 2-undecanone is replaced by 3-undecanone, when n-dodecane is replaced by n-tetradecane, when phenylacetaldehyde is replaced by hexanal, when phenylethanol is replaced by hexanol, and when mannose is replaced by glucose, the mosquito attracting ability of the composition is reduced to varying degrees. It is speculated that the reasons for this phenomenon may be: (although 2-undecanone and 3-undecanone are both ketone compounds, they have different stereostructures. 2-undecanone may have a specific spatial configuration, making it easier to bind to the olfactory receptors of mosquitoes, and the structural difference of 3-undecanone may cause its ability to bind to the receptor to decrease, thereby reducing the mosquito attracting effect; n-dodecane and n-tetradecane are both alkanes, but have different carbon chain lengths. The long carbon chain of n-tetradecane may form a more stable odor gradient in the air due to its larger molecular volume and different volatility, thereby more effectively attracting mosquitoes. The shorter carbon chain of n-dodecane may increase volatility and odor The gradient is unstable, and the mosquito-attracting effect is reduced; although both phenylacetaldehyde and hexanal are aldehyde compounds, phenylacetaldehyde contains a benzene ring structure, and its electron cloud distribution and spatial configuration are different from those of the straight-chain hexanal. The straight-chain structure of hexanal may be more in line with the specific recognition mode of the mosquito olfactory receptor, while the benzene ring structure of phenylacetaldehyde may lead to a decrease in recognition efficiency; phenylethanol contains a benzene ring and a hydroxyl group, while hexanal is a straight-chain alcohol. The introduction of the benzene ring may change the hydrophobicity and hydrogen bonding of the molecule. These changes may affect the interaction between the molecule and the mosquito olfactory receptor, thereby reducing the mosquito-attracting effect; mannose and glucose are both monosaccharides, but their structures are different, especially in the stereochemistry of the hydroxyl group. Glucose may be the main sugar recognized by mosquitoes, and its specific stereostructure is crucial for binding to the receptor. The structural difference of mannose may lead to a decrease in the ability to bind to the receptor. ), it can be seen that any of the 2-undecanone, n-tetradecane, the first functional component, the second functional component, and the third functional component in this application are irreplaceable.

Claims

1. A mosquito attractant composition, characterized in that: By mass fraction, it includes the following components: 2-undecanone 10-20%; n-Tetradecane 10-15%; The first effective ingredient is 10-30%; The second effective ingredient is 15-30%; The third effective ingredient 2-10%; Pure water was added to 100%; The first effective ingredient is selected from at least one of hexaldehyde and tea ketone; The second functional ingredient is selected from at least one of methyl heptenone, hexanol, and acetoin; The third effective ingredient is selected from at least one of yeast powder and glucose.

2. The mosquito attractant composition according to claim 1, characterized in that: The first effective ingredient is a mixture of hexanal and tea ketone; The second functional ingredient is a mixture of methyl heptenone, hexanol and acetoin; The third effective ingredient is a mixture of yeast powder and glucose.

3. The mosquito attractant composition according to claim 1, characterized in that: By mass fraction, it includes the following components: 2-undecanone 10-20%; n-Tetradecane 10-15%; Hexanal 5-15%; Tea aroma ketone 5-15%; Methyl heptenone 5-10%; Hexanol 5-10%; Acetoin 5-10%; Yeast powder 1-5%; Glucose 1-5%; Add pure water to 100%.

4. The mosquito attractant composition according to claim 1, characterized in that: By mass fraction, it includes the following components: 2-undecanone 12-16%; n-Tetradecane 10-14%; Hexanal 6-8%; Tea ketone 12-14%; Methyl heptenone 7-9%; Hexanol 5-7%; Acetoin 6-8%; Yeast powder 1-3%; Glucose 1-3%; Add pure water to 100%.

5. A method for preparing a mosquito attractant composition according to any one of claims 1 to 4, characterized in that: 2-undecanone, n-tetradecane, a first functional component, a second functional component, a third functional component and pure water are mixed to obtain a mosquito attractant composition.

6. The mosquito attractant composition according to claim 5, characterized in that: The following steps are involved: Step 1: Add glucose into water and dissolve it to obtain intermediate solution 1; Step 2: Add acetoin to the intermediate solution 1 and mix well to obtain the intermediate solution 2; Step 3: Mix 2-undecanone, n-tetradecane, hexanal, tea aromatic ketone, methyl heptenone, hexanol and the intermediate solution 2 to obtain the intermediate solution 3; Step 4: Add yeast powder into the intermediate liquid 3 and stir to obtain a mosquito attractant composition.

7. Use of the mosquito attractant composition as claimed in any one of claims 1 to 4 in mosquito attractants.

8. A mosquito attractant, characterized in that: Contains 10 to 100 wt % of the mosquito attractant composition as described in any one of claims 1 to 4.

9. The mosquito attractant according to claim 8, characterized in that: The mosquito attractant is in any one of a gel type, an aerosol type and a solution type.