A gel-type bird repellent and its preparation method and application

Abstract

The present invention relates to a gel-type bird repellent and a preparation method and application thereof. The gel-type bird repellent is mainly composed of the following components: bird repellent essential oil, a solvent for dissolving the bird repellent essential oil, a matrix, an emulsifier and water, wherein, per 100 weight parts of the bird repellent, the bird repellent essential oil is 0.5-5 parts, the solvent is 3-5 parts, the matrix is ​​1-2 parts, the emulsifier is 3-5 parts, and the balance is water; the matrix is ​​one or two of sodium carboxymethyl cellulose and SAP water-absorbing resin. In the gel-type bird repellent of the present invention, the bird repellent essential oil is stably present in the gel, thereby extending the validity period of the bird repellent, and because the bird repellent of the present invention is gel-type, the bird repellent essential oil is not easy to volatilize, and in bad weather, such as windy and rainy weather, the bird repellent is not easy to be damaged, the effective ingredients are not easy to be lost, and the bird repellent effect is greatly improved. The avoidance rate of the gel-type bird repellent of the present invention after being placed for 10 days is more than 95%, and the avoidance rate after 30 days is more than 81%.

Description

Technical Field

[0001] The invention relates to a gel-type bird repellent and a preparation method and application thereof, belonging to the technical field of biochemistry. Background Art

[0002] In recent years, with the improvement of my country's ecological environment and the enhancement of people's environmental awareness, the number of bird populations has increased dramatically, and the problem of bird damage has become more and more serious. Birds will peck at crops when they are sown and mature, causing uneven emergence of crops, reduced yields and lower quality; when fruits in orchards are ripe, the reduction in yield caused by birds pecking is particularly serious. Under the premise of not harming birds, bird repellent has become a new choice for safe and effective bird repellent.

[0003] Bird repellents are popular because of their low price and simple use, but most of the existing bird repellents on the market are highly toxic, have a short volatilization time, and are not very effective. Domestic and foreign bird repellent products are mainly in the form of granules, powders, water, and emulsions. The active ingredient solution in the bird repellent volatilizes and has a short shelf life. If there is strong wind or rain, the active ingredient of the bird repellent is easy to be lost, and its bird repellent effect is greatly reduced. Summary of the invention

[0004] The purpose of the present invention is to provide a gel-type bird repellent to solve the problems in the prior art that the active ingredient solution in the bird repellent volatilizes, the effective period is short, the active ingredient of the bird repellent is easily lost in harsh environments, and the bird repellent effect is reduced.

[0005] The second object of the present invention is to provide a method for preparing a gel-type bird repellent, which is simple and easy to operate and suitable for factory production.

[0006] The third object of the present invention is to provide an application of a gel-type bird repellent for repelling birds and protecting plants in a green and environmentally friendly manner.

[0007] In order to achieve the above purpose, the technical solution of the gel-type bird repellent of the present invention is:

[0008] A gel-type bird repellent mainly consists of the following components: bird repellent essential oil, a solvent for dissolving the bird repellent essential oil, a matrix, an emulsifier and water, wherein per 100 parts by weight of the bird repellent, the bird repellent essential oil is 0.5 to 5 parts, the solvent is 3 to 5 parts, the matrix is ​​1 to 2 parts, the emulsifier is 3 to 5 parts, and the balance is water; the matrix is ​​one or two of sodium carboxymethyl cellulose and SAP water-absorbing resin.

[0009] The present invention utilizes sodium carboxymethyl cellulose or SAP water-absorbing resin matrix to wrap the bird-repelling essential oil therein, and by adding an emulsifier, the bird-repelling essential oil can be evenly and stably dispersed in the matrix, and the obtained gel-type bird repellent is delicate and stable, that is, under different environmental changes, the bird repellent is not easy to be stratified, so that the bird-repelling essential oil is stably present in the gel, thereby extending the validity period of the bird repellent. Moreover, since the bird repellent of the present invention is gel-type, the bird-repelling essential oil is not easy to volatilize, and in bad weather, such as windy and rainy weather, the bird repellent is not easy to be damaged, the effective ingredients are not easy to be lost, and the bird-repelling effect is greatly improved. It was found through measurement that the avoidance rate of the gel-type bird repellent of the present invention after being placed for 10 days is more than 95%, and the avoidance rate after 30 days is more than 81%.

[0010] In order to better dissolve the active ingredients and make them more easily dispersed, further, the solvent for dissolving the bird-repellent essential oil is ethanol.

[0011] In order to extend the effectiveness of the bird repellent and increase the types of birds that are driven away, preferably, the bird repellent essential oil is one or a combination of two or more of patchouli oil, eucalyptus essential oil, sage essential oil, tea tree essential oil or atractylodes oil.

[0012] In order to make the bird repellent essential oil disperse more evenly and stably, preferably, the emulsifier is one or a combination of two or more of Tween-20, Tween-60 and Tween-80. Further preferably, the emulsifier is Tween-80.

[0013] In order to expand the temperature range of the bird repellent, preferably, the components of the gel-type bird repellent also include an antifreeze agent, and the antifreeze agent is one or both of ethylene glycol and propylene glycol.

[0014] In order to prolong the effective use time and prevent the preparation from deteriorating during storage, preferably, the components of the gel-type bird repellent also include a preservative, and the preservative is one or both of sodium benzoate or kasone.

[0015] Preferably, the antifreeze agent is 3 to 5 parts per 100 parts by weight of the bird repellent.

[0016] Preferably, the preservative is contained in an amount of 0.1 to 0.5 parts per 100 parts by weight of the bird repellent.

[0017] Preferably, every 100 parts by weight of the gel-type bird repellent is composed of the following components in parts by weight: 4-5 parts of bird repellent essential oil, 3-5 parts of emulsifier, 3-5 parts of solvent, 3-5 parts of propylene glycol, 0.1-0.5 parts of kason and 1-2 parts of SAP water-absorbing resin, with the balance being water.

[0018] After the components and proportions are optimized and screened, the bird repellent with the components and proportions has a good bird repelling effect in field tests, and the avoidance rate is above 92% at 30 days.

[0019] The technical scheme of the preparation method of the gel-type bird repellent of the present invention is:

[0020] A preparation method of a gel-type bird repellent comprises the following steps: firstly, mixing a matrix and part of water to obtain a matrix component, then mixing a bird repellent essential oil, a solvent and an emulsifier to obtain a bird repellent essential oil component, then uniformly mixing the bird repellent essential oil component and the matrix component, adding a surplus of water and stirring to obtain a uniform and fine gel-type bird repellent. The preparation method is simple and easy to operate and is suitable for factory production.

[0021] The technical solution for the application of the gel-type bird repellent of the present invention is:

[0022] The invention discloses an application of a gel-type bird repellent in bird expulsion.

[0023] The active ingredient of the gel-type bird repellent of the invention is a natural extract, which is not only environmentally friendly but also non-toxic to crops and has a good effect in repelling birds in farmland.

[0024] Preferably, the birds mainly repelled by the gel-type bird repellent are sparrows, magpies and turtledoves. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The process flow chart of the gel-type bird repellent of Example 1 is shown in FIG. DETAILED DESCRIPTION

[0026] The sources of the test products involved in the embodiments are as follows:

[0027] Bird repellent essential oil: Patchouli oil (Hubei Dibai Chemical Co., Ltd.);

[0028] Eucalyptus essential oil (Jiangxi Hengcheng Natural Fragrance Oil Co., Ltd.);

[0029] Tea tree essential oil (Jiangxi Hengcheng Natural Fragrance Oil Co., Ltd.);

[0030] Sage essential oil (Wuhan Jixinyibang Biotechnology Co., Ltd.);

[0031] Atractylodes lancea oil (Jiangxi Hairui Natural Plant Co., Ltd.);

[0032] Emulsifier: Tween-80 sorbitan monooleate polyoxyethylene ether HLB value 15.0 (Tianjin Yongda Chemical Reagent Co., Ltd.);

[0033] Tween-60 polyethylene oxide sorbitan monostearate HLB value 14.9 (Tianjin Yongda Chemical Reagent Co., Ltd.);

[0034] Tween-20 polyethylene oxide sorbitan monolaurate HLB value 16.7 (Tianjin Yongda Chemical Reagent Co., Ltd.);

[0035] Solvent: ethanol (Tianjin Yongda Chemical Reagent Co., Ltd.);

[0036] Deionized water (self-made in the laboratory);

[0037] Preservative: sodium benzoate (Shandong Jiayu Chemical Co., Ltd.);

[0038] Kason (Shandong Jiayu Chemical Co., Ltd.);

[0039] Antifreeze: ethylene glycol (Tianjin Yongda Chemical Reagent Co., Ltd.);

[0040] Propylene glycol (Tianjin Yongda Chemical Reagent Co., Ltd.);

[0041] Matrix: sodium carboxymethyl cellulose (Sinopharm Chemical Reagent Co., Ltd.);

[0042] Hydroxypropyl methylcellulose (Sinopharm Chemical Reagent Co., Ltd.);

[0043] Carbomer 940 (Sinopharm Chemical Reagent Co., Ltd.);

[0044] Sodium alginate (Sinopharm Chemical Reagent Co., Ltd.);

[0045] SAP water-absorbent resin (Hebei Jinfeng New Material Technology Co., Ltd.).

[0046] The technical solution of the present invention is further described below in conjunction with specific implementation methods.

[0047] 1. The specific embodiments of the gel-type bird repellent of the present invention are as follows:

[0048] Example 1

[0049] The gel-type bird repellent of the present embodiment is composed of 0.5 g of bird repellent essential oil, 3 g of ethanol, 1 g of sodium carboxymethyl cellulose, 3 g of Tween-80, 4 g of ethylene glycol, 0.1 g of sodium benzoate and 88.4 g of deionized water; wherein the bird repellent essential oil is composed of patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil in a mass ratio of 1:1:1:1:1.

[0050] Example 2

[0051] The gel-type bird repellent of the present embodiment is composed of 1.5 g of bird repellent essential oil, 4 g of ethanol, 1.5 g of sodium carboxymethyl cellulose, 4 g of Tween-80, 3 g of ethylene glycol, 0.3 g of sodium benzoate and 85.7 g of deionized water; wherein the bird repellent essential oil is composed of patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil in a mass ratio of 1:1:1:1:1.

[0052] Example 3

[0053] The gel-type bird repellent of the present embodiment is composed of 3g of bird repellent essential oil, 5g of ethanol, 2g of sodium carboxymethyl cellulose, 5g of Tween-80, 5g of ethylene glycol, 0.5g of sodium benzoate and 79.5g of deionized water; wherein, the bird repellent essential oil is composed of patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil in a mass ratio of 1:1:1:1:1.

[0054] Example 4

[0055] The gel-type bird repellent of this embodiment is composed of 5g bird repellent essential oil, 5g ethanol, 1g SAP water-absorbing resin, 3g Tween-80, 4g propylene glycol, 0.1g Kathon and 81.9g deionized water; wherein, the bird repellent essential oil is composed of patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil in a mass ratio of 1:1:1:1:1.

[0056] Example 5

[0057] The gel-type bird repellent of this embodiment is composed of 5g bird repellent essential oil, 3g ethanol, 1.5g SAP water-absorbing resin, 4g Tween-80, 3g propylene glycol, 0.3g kason and 83.2g deionized water; wherein, the bird repellent essential oil is composed of patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil in a mass ratio of 1:1:1:1:1.

[0058] Example 6

[0059] The gel-type bird repellent of this embodiment is composed of 5g bird repellent essential oil, 4g ethanol, 2g SAP water-absorbing resin, 5g Tween-80, 5g propylene glycol, 0.5g kason and 78.5g deionized water; wherein the bird repellent essential oil is composed of patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil in a mass ratio of 1:1:1:1:1.

[0060] 2. The specific embodiment of the preparation method of the gel-type bird repellent of the present invention is as follows:

[0061] Example 7

[0062] This embodiment is a method for preparing the gel-type bird repellent of embodiment 1, and the processing flow chart is as follows: Figure 1 As shown, the following steps are specifically adopted:

[0063] (1) Matrix swelling: First, mix 1 g of sodium carboxymethyl cellulose and 4 g of ethylene glycol evenly to completely wet the sodium carboxymethyl cellulose, then add an appropriate amount of deionized water and stir, and allow to swell naturally overnight. After the matrix is ​​completely swollen, it is ready for use;

[0064] (2) Premixing of active ingredients: firstly, patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil were mixed in a mass ratio of 1:1:1:1:1 to obtain bird repellent essential oil, then 0.5 g of the bird repellent essential oil was completely dissolved in 3 g of ethanol at room temperature, and then 3 g of Tween-80 was added, and the mixture was stirred evenly for later use;

[0065] (3) The solution obtained in step (2) is slowly added to step (1) under stirring, and stirred evenly. Finally, 0.1 g of sodium benzoate is added, and the solution is made up to 100 g with deionized water. The mixture is stirred in the same direction for a long time until a uniform and fine gel is formed.

[0066] Example 8

[0067] This embodiment is a method for preparing the gel-type bird repellent of embodiment 2, and the following steps are adopted:

[0068] (1) Matrix swelling: First, mix 1.5 g of sodium carboxymethyl cellulose and 3 g of ethylene glycol evenly to completely wet the sodium carboxymethyl cellulose, then add an appropriate amount of deionized water and stir, and allow to swell naturally overnight. After the matrix is ​​completely swollen, it is ready for use;

[0069] (2) Premixing of active ingredients: firstly, patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil were mixed in a mass ratio of 1:1:1:1:1 to obtain bird repellent essential oil, then 1.5 g of the bird repellent essential oil was completely dissolved in 4 g of ethanol at room temperature, and then 4 g of Tween-80 was added, and the mixture was stirred evenly for later use;

[0070] (3) The solution obtained in step (2) is slowly added to step (1) under stirring, and stirred evenly. Finally, 0.3 g of sodium benzoate is added, and the solution is made up to 100 g with deionized water. The mixture is stirred in the same direction for a long time until a uniform and fine gel is formed.

[0071] Example 9

[0072] This embodiment is a method for preparing the gel-type bird repellent of embodiment 3, and the following steps are adopted:

[0073] (1) Matrix swelling: First, mix 2 g of sodium carboxymethyl cellulose and 5 g of ethylene glycol evenly to completely wet the sodium carboxymethyl cellulose, then add an appropriate amount of deionized water and stir, and allow to swell naturally overnight. After the matrix is ​​completely swollen, it is ready for use;

[0074] (2) Premixing of active ingredients: firstly, patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil were mixed in a mass ratio of 1:1:1:1:1 to obtain bird repellent essential oil, then 3g of the bird repellent essential oil was completely dissolved in 5g of ethanol at room temperature, and then 5g of Tween-80 was added, and the mixture was stirred evenly for later use;

[0075] (3) The solution obtained in step (2) is slowly added to step (1) under stirring, and stirred evenly. Finally, 0.5 g of sodium benzoate is added, and the solution is made up to 100 g with deionized water. The mixture is stirred in the same direction for a long time until a uniform and fine gel is formed.

[0076] Example 10

[0077] This embodiment is a method for preparing the gel-type bird repellent of embodiment 4, using the following steps:

[0078] (1) Matrix swelling: First, mix 1 g of SAP water-absorbing resin and 4 g of propylene glycol evenly to completely wet the SAP water-absorbing resin, then add an appropriate amount of deionized water and stir, and allow to swell naturally overnight. After the resin is completely swollen, it is ready for use.

[0079] (2) Premixing of active ingredients: firstly, patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil were mixed in a mass ratio of 1:1:1:1:1 to obtain bird repellent essential oil, then 5 g of the bird repellent essential oil was completely dissolved in 5 g of ethanol at room temperature, and then 3 g of Tween-80 was added, and the mixture was stirred evenly for later use;

[0080] (3) The solution obtained in step (2) is slowly added to step (1) under stirring, and stirred evenly. Finally, 0.1 g of kason is added, and the solution is made up to 100 g with deionized water. The mixture is stirred in the same direction for a long time until a uniform and fine gel is formed.

[0081] Embodiment 11

[0082] This embodiment is a method for preparing the gel-type bird repellent of embodiment 5, using the following steps:

[0083] (1) Matrix swelling: First, mix 1.5 g of SAP water-absorbing resin and 3 g of propylene glycol evenly to completely wet the SAP water-absorbing resin, then add an appropriate amount of deionized water and stir, and allow to swell naturally overnight. After the resin is completely swollen, it is ready for use.

[0084] (2) Premixing of active ingredients: firstly, patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil were mixed in a mass ratio of 1:1:1:1:1 to obtain bird repellent essential oil, then 5 g of the bird repellent essential oil was completely dissolved in 3 g of ethanol at room temperature, and then 4 g of Tween-80 was added, and the mixture was stirred evenly for later use;

[0085] (3) The solution obtained in step (2) is slowly added to step (1) under stirring, and stirred evenly. Finally, 0.3 g of kason is added, and the solution is made up to 100 g with deionized water. The mixture is stirred in the same direction for a long time until a uniform and fine gel is formed.

[0086] Example 12

[0087] This embodiment is a method for preparing the gel-type bird repellent of embodiment 6, using the following steps:

[0088] (1) Matrix swelling: First, mix 2 g of SAP water-absorbing resin and 5 g of propylene glycol evenly to completely wet the SAP water-absorbing resin, then add an appropriate amount of deionized water and stir, and allow to swell naturally overnight. After the matrix is ​​completely swollen, it is ready for use;

[0089] (2) Premixing of active ingredients: firstly, patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil were mixed in a mass ratio of 1:1:1:1:1 to obtain bird repellent essential oil, then 5 g of the bird repellent essential oil was completely dissolved in 4 g of ethanol at room temperature, and then 5 g of Tween-80 was added, and the mixture was stirred evenly for later use;

[0090] (3) The solution obtained in step (2) is slowly added to step (1) under stirring, and stirred evenly. Finally, 0.5 g of kason is added, and the solution is made up to 100 g with deionized water. The mixture is stirred in the same direction for a long time until a uniform and fine gel is formed.

[0091] 3. The specific examples of the application of the gel-type bird repellent of the present invention are as follows:

[0092] The experiment was conducted in an apple orchard in a certain place. The experimental time was from the beginning of the maturity of apples to the full maturity of apples of this variety. The local bird population included sparrows, magpies and turtledoves.

[0093] Specific operation: The experimental drugs are selected from the bird repellents of Examples 1-6, plus a blank control group, a total of 7 groups; the blank control group is not treated, and the test group is applied by wrapping the drug in a cloth and hanging it on the tree trunk. Each group of experiments treats one apple tree as a group, and five points are evenly distributed on each apple tree, and 5g of drug is applied at each location. The number of fruits on the apple tree is recorded separately, recorded as S0; every 10 days, the number of fruits on the apple tree pecked by birds is recorded once, recorded as S1; the feeding rate is calculated each time, and the avoidance rate is further calculated based on the average feeding rate of the blank control group and the test group. Each group of experiments is processed three times in parallel, and the average avoidance rate is taken. The experimental results are shown in Table 1.

[0094]

[0095]

[0096] Wherein, W: feeding rate; W0: feeding rate of blank control group; W1: feeding rate of experimental group.

[0097] Table 1 Field test results of gel-type bird repellent

[0098]

[0099] From the experimental results in the above table, it can be seen that the bird repellents of Examples 1-6 have good bird repellent effects in field tests, and their avoidance rates are all above 81% at 30 days. Among them, the bird repellents of Examples 4-6 have avoidance rates of above 96% at 10 days in the field test, above 94% at 20 days, and above 92% at 30 days. The bird repellent has a long bird repellent effect period and a high avoidance rate.

[0100] 4. Comparative Proportion

[0101] The following comparative examples are the screening and comparison process of the formulations of this application, and the preparation methods are all based on Figure 1 The comparative example can be combined with the steps of the subsequent experimental examples to illustrate the effectiveness of the formula of the present invention.

[0102] Comparative Examples 1-6

[0103] The compositions of the bird repellents of Comparative Examples 1-6 are shown in Table 2.

[0104] Table 2 Bird repellent composition of comparative examples 1-6

[0105]

[0106]

[0107] Comparative Examples 7-12

[0108] The compositions of the bird repellents of Comparative Examples 7-12 are shown in Table 3.

[0109] Table 3 Bird repellent composition of comparative examples 7-12

[0110]

[0111] Comparative Examples 13-16

[0112] The compositions of the bird repellents of Comparative Examples 13-16 are shown in Table 4.

[0113] Table 4 Bird repellent composition of comparative examples 13-16

[0114]

[0115] Comparative Examples 17-20

[0116] The compositions of the bird repellents of Comparative Examples 17-20 are shown in Table 5.

[0117] Table 5 Bird repellent composition of comparative examples 17-20

[0118]

[0119]

[0120] Comparative Examples 21-24

[0121] The compositions of the bird repellents of Comparative Examples 21-24 are shown in Table 6.

[0122] Table 6 Bird repellent composition of comparative examples 21-24

[0123]

[0124] Comparative Examples 25-30

[0125] The compositions of the bird repellents of Comparative Examples 25-30 are shown in Table 7.

[0126] Table 7 Bird repellent composition of comparative examples 25-30

[0127]

[0128] Comparative Example 31

[0129] The gel-type bird repellent of this comparative example is composed of 8g of bird repellent essential oil, 5g of ethanol, 2g of sodium carboxymethyl cellulose, 5g of Tween-80, 5g of ethylene glycol, 0.5g of sodium benzoate and 74.5g of deionized water; wherein, the bird repellent essential oil is composed of patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil in a mass ratio of 1:1:1:1:1.

[0130] Comparative Example 32

[0131] The gel-type bird repellent of this comparative example is composed of 10g of bird repellent essential oil, 5g of ethanol, 2g of SAP water-absorbing resin, 5g of Tween-80, 5g of propylene glycol, 0.5g of kason and 72.5g of deionized water; wherein, the bird repellent essential oil is composed of patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil and atractylodes oil in a mass ratio of 1:1:1:1:1.

[0132] V. Experimental Examples

[0133] The measurement methods involved in the experimental example are as follows:

[0134] Appearance: This product is a gel with uniform color, which is even and fine, remains in a gel state, and does not dry up or liquefy.

[0135] Viscosity measurement: Gels are semi-solid preparations with high viscosity and certain fluidity. Therefore, viscosity is an important indicator for measuring the viscosity and fluidity of semi-solid preparations. The experiment uses a NDJ-8S rotary viscometer to measure its viscosity. Under the conditions of 4# rotor and a speed of 12r / min, a viscosity of 30-40Pa.s is selected as the appropriate viscosity.

[0136] Centrifugation test: Take 10g of the sample and put it into a graduated centrifuge tube. After centrifugation at 4000r / min for 30min, select the samples without oil separation and stratification as qualified samples.

[0137] Heat resistance test: Place the sample in a centrifuge tube and place it in a 50℃ constant temperature box for 24 hours. Select the samples without stratification, oil separation, mildew, uniformity change and other phenomena as qualified samples.

[0138] Low temperature stability determination: Place the sample in a centrifuge tube and place it in a 0℃ freezer for 24 hours. Select the samples without freezing, stratification, oil separation, uniformity change, etc. as qualified samples.

[0139] Cold resistance test: Place the sample in a centrifuge tube and place it in a -20℃ freeze dryer for 24 hours. Select the samples without stratification, oil separation, uniformity change, etc. as qualified samples.

[0140] Experimental Example 1 Screening of bird repellent essential oil components

[0141] The experimental birds in this experimental example are 6 commercially available white-feathered king pigeons of similar size. Two white-feathered king pigeons are placed in a cage as a group, and divided into 3 groups in total. The cage is made of stainless steel, with a size of 180cm×60cm×40cm. Two feeding troughs and a drinking water bowl are placed in each cage. Before the experiment, the pigeons were fed with normal pigeon feed (mixed with corn, peas, sorghum, wheat, etc.) and clean water for 3 days.

[0142] In each cage, a trough was set up as the control group, and 50g of pigeon feed was added every day; the other was the test group, 0.50g of the sample solution of the bird-repelling component was mixed with 50g of pigeon feed, and aired for 10-15 minutes. After the surface of the pigeon feed was dry, the control group and the test group were put in at the same time, and the cage was kept full of clean water. Feed at 8:00 in the morning and 17:30 in the afternoon every day, and weigh the remaining pigeon feed in each trough. Three groups were tested at the same time, and each test was separated by three days. The trough was cleaned and dried every day, and the position of the trough was changed before the second test.

[0143] The average food intake of the test group and the control group was recorded, and their repellency rate (%) was calculated. The results are shown in Table 8.

[0144] The avoidance rate calculation formula is as follows:

[0145]

[0146] Table 8 Repellency rate of different bird repellent components (%)

[0147]

[0148] From the results in the above table, it can be seen that the repellency rate of the blank control group in treatment 1 is 2.79%, and the repellency rates of the ten selected essential oils are much higher than those of the blank control group, so the ten selected essential oils all have a certain bird repellent effect; among them, there are 5 essential oils with a repellency rate greater than 80%, and from large to small, they are patchouli oil>eucalyptus essential oil>sage essential oil>atractylodes oil>tea tree essential oil; there are 5 essential oils with a repellency rate less than 45%, namely, orchid oil, coriander seed oil, litsea cubeba oil, immortelle oil, and iris oil; the repellency rate of the control agent methyl anthranilate in treatment 2 is 77.19%, and essential oils with a repellency rate greater than methyl anthranilate are selected as the active ingredients of bird repellents, namely patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil, and atractylodes oil.

[0149] Experimental Example 2 Effect of Matrix on Appearance and Viscosity of Bird Repellent Gel

[0150] In this experimental example, the compound essential oil selected in Experimental Example 1 is used as the active ingredient, and the dosage is 5%. The bird repellent essential oils are patchouli oil, eucalyptus oil, tea tree oil, sage oil, and atractylodes oil, which are mixed in a mass ratio of 1:1:1:1:1. The effects of different matrix types in Comparative Examples 1-6 on the appearance and viscosity of the bird repellent gel are tested to determine the matrix type. The experimental results are shown in Table 9.

[0151] Table 9 Effect of matrix type on appearance and viscosity of bird repellent gel

[0152]

[0153]

[0154] From the results, it can be seen that the bird repellents of Comparative Examples 1-6 are all qualified in appearance, but have great differences in viscosity. The viscosity is between 30-40 Pa.s, i.e., Comparative Examples 2-6, and the rest are unqualified; therefore, sodium carboxymethyl cellulose or SAP absorbent resin is selected as the matrix for the next step of screening.

[0155] Experimental Example 3 Effect of Matrix Dosage on the Appearance and Viscosity of Bird Repellent Gel

[0156] This experimental example uses the compound essential oil selected in Experimental Example 1 as the active ingredient, with an amount of 5%, and the bird repellent essential oils are patchouli oil, eucalyptus oil, tea tree oil, sage oil, and atractylodes oil, mixed in a mass ratio of 1:1:1:1:1, and sodium carboxymethyl cellulose or SAP water-absorbing resin is used as the matrix. The effect of the matrix dosage on the appearance and viscosity of the bird repellent gel in Comparative Examples 2, 6, and 7-12 is tested to determine the matrix dosage. The experimental results are shown in Table 10.

[0157] Table 10 Effect of matrix dosage on appearance and viscosity of bird repellent gel

[0158]

[0159] From the results, it can be seen that the bird repellents of Comparative Examples 2, 6, and 7-12 are all qualified in appearance, but there are differences in viscosity. The viscosity is selected between 30-40 Pa.s, that is, except for Comparative Examples 7 and 10, the rest are qualified; therefore, when sodium carboxymethyl cellulose or SAP water-absorbing resin is selected as the matrix, the dosage is 1%-2%.

[0160] Experimental Example 4 Effect of Solvent Amount on Appearance and Viscosity of Bird Repellent Gel

[0161] In this experimental example, the compound essential oil selected in Experimental Example 1 is used as the effective ingredient, and the dosage is 5%. The bird-repelling essential oil is patchouli oil, eucalyptus oil, tea tree oil, sage oil, and atractylodes oil, which are mixed in a mass ratio of 1:1:1:1:1, and sodium carboxymethyl cellulose or SAP water-absorbing resin is used as a matrix, and the dosage is 1%. The atractylodes oil in the selected bird-repelling essential oil is solid at room temperature and soluble in ethanol, so ethanol is selected as the solvent.

[0162] The amount of solvent was changed to test the effect of the amount of solvent on the appearance and viscosity of the bird repellent gel in Comparative Examples 8, 11 and 13-16 to determine the amount of solvent. The experimental results are shown in Table 11.

[0163] Table 11 Effect of solvent dosage on appearance and viscosity of bird repellent gel

[0164]

[0165] From the results, it can be seen that comparative examples 8, 11 and 13-16 are all qualified in viscosity, but there are differences in appearance; among them, comparative examples 13 and 15 are unqualified in appearance, with small particles and uneven distribution. The reason is that the atractylodes oil is not completely dissolved. It is solid at room temperature and needs to be completely dissolved with solvent ethanol before adding to the gel matrix; therefore, the amount of solvent ethanol is selected to be 3%-5%.

[0166] Experimental Example 5 Effect of emulsifier type on the stability of bird repellent gel

[0167] This experimental example uses the compound essential oil selected in Experimental Example 1 as the effective ingredient, the dosage is 5%, the bird repellent essential oil is patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil, and atractylodes oil, the mass ratio is 1:1:1:1:1, sodium carboxymethyl cellulose or SAP water-absorbing resin is used as the matrix, the dosage is 1%, the solvent ethanol dosage is 3%, the emulsifier type is changed, and the effect of the emulsifier type on the stability of the bird repellent gel in Comparative Examples 14 and 16-20 is tested to determine the emulsifier type. The experimental results are shown in Table 12.

[0168] Table 12 Effect of emulsifier type on the stability of bird repellent gel

[0169]

[0170] From the results in the above table, it can be seen that comparative examples 14, 16 and 17-20 are qualified in appearance and viscosity, but there are differences in heat resistance test and centrifugal stability; among them, comparative examples 14 and 16 are qualified, and the others are unqualified; therefore, Tween-80 is selected as the emulsifier.

[0171] Experimental Example 6 Effect of emulsifier dosage on the stability of bird repellent gel

[0172] This experimental example uses the compound essential oil selected in Experimental Example 1 as the effective ingredient, the dosage is 5%, the bird repellent essential oil is patchouli oil, eucalyptus essential oil, tea tree essential oil, sage essential oil, and atractylodes oil, the mass ratio is 1:1:1:1:1, sodium carboxymethyl cellulose or SAP water-absorbing resin is used as the matrix, the dosage is 1%, the solvent ethanol dosage is 3%, Tween-80 is used as the emulsifier, and the effect of the emulsifier dosage on the stability of the bird repellent gel in Comparative Examples 14, 16 and 21-24 is tested to determine the emulsifier dosage. The experimental results are shown in Table 13.

[0173] Table 13 Effect of emulsifier dosage on the stability of bird repellent gel

[0174]

[0175] From the results in the above table, it can be seen that comparative examples 14, 16 and 21-24 are qualified in appearance and viscosity, but there are differences in heat resistance test and centrifugal stability; among them, comparative examples 21 and 23 have oil separation, and the others are normal; therefore, when Tween 80 is selected as the emulsifier, its usage is 3%-5%.

[0176] Experimental Example 7 Effect of Antifreeze Type and Dosage on the Stability of Bird Repellent Gel

[0177] This experimental example uses the compound essential oil selected in Experimental Example 1 as the effective ingredient, with an amount of 5%, the bird-repellent essential oils are patchouli oil, eucalyptus oil, tea tree oil, sage oil, and atractylodes oil, mixed in a mass ratio of 1:1:1:1:1, sodium carboxymethyl cellulose or SAP water-absorbing resin as the matrix, with an amount of 1%, the solvent ethanol is used in an amount of 3%, and the amount of Tween-80 is 3%. The effects of the types and amounts of antifreeze in Comparative Examples 25-30 on the stability of the bird-repellent gel are tested to determine the types and amounts of antifreeze. The experimental results are shown in Table 14.

[0178] Table 14 Effect of antifreeze type and dosage on the stability of bird repellent gel

[0179]

[0180]

[0181] From the results in the above table, it can be seen that comparative examples 25-30 are qualified in appearance and viscosity, but there are differences in low-temperature stability; the selected antifreeze agents ethylene glycol and propylene glycol have the same low-temperature stability. When the antifreeze dosage is 1%, the low temperature directly freezes; when the antifreeze dosage is 3%-5%, its low-temperature stability is qualified; therefore, the antifreeze agent is selected to be ethylene glycol or propylene glycol, and the dosage is 3%-5%.

[0182] Experimental Example 7 Preferred Formula

[0183] This experimental example is screened by experimental examples 1-6, with compound essential oil as the active ingredient, the dosage is 5%, the bird-repellent essential oil is patchouli oil, eucalyptus oil, tea tree oil, sage oil, and atractylodes oil, the mass ratio is 1:1:1:1:1, sodium carboxymethyl cellulose or SAP absorbent resin is used as the matrix, the dosage is 1%-2%, the solvent ethanol dosage is 3%-5%, the emulsifier Tween-80 dosage is 3%-5%, the antifreeze agent ethylene glycol or propylene glycol dosage is 3%-5%, and the preservative sodium benzoate or kason dosage is 0.1%-0.5%. The test results are shown in Table 15.

[0184] Table 15 Quality test results of some preferred formula combinations

[0185]

[0186] From the results in the above table, it can be seen that when the amount of bird repellent essential oil is greater than 5%, the preparations of comparative examples 31 and 32 quickly show oil separation and are extremely unstable; when the amount of bird repellent essential oil is 0.5%-5%, all indicators of the formula combinations of Examples 1-6 are qualified.

[0187] Experimental Example 8 Performance of Different Bird Repellent Essential Oils

[0188] This experimental example is composed of one or two bird repellent essential oils. The experimental design is shown in Table 16 to investigate their effects on the stability of the bird repellent gel. The results are shown in Table 17.

[0189] Table 16 Effects of different bird repellent essential oil combinations on the stability of bird repellent gel

[0190]

[0191] Table 17 Effects of different bird repellent essential oil combinations on the stability of bird repellent gel

[0192]

[0193] From the results in the above table, it can be seen that when the bird-repelling essential oils are combined in different ways, the preparations are relatively stable, and all the indicators of the formula combinations are qualified. Moreover, the bird-repelling essential oils can be composed of one or two essential oils to achieve the purpose of the present invention.

Claims

1. A gel-type bird repellent, characterized in that: The bird repellent mainly consists of the following components: bird repellent essential oil, a solvent for dissolving the bird repellent essential oil, a matrix, an emulsifier and water, wherein, per 100 parts by weight of the bird repellent, there are 0.5 to 5 parts of bird repellent essential oil, 3 to 5 parts of solvent, 1 to 2 parts of matrix, 3 to 5 parts of emulsifier, and the balance is water; the matrix is ​​sodium carboxymethyl cellulose or SAP water-absorbing resin; the bird repellent essential oil is one or two of eucalyptus essential oil and atractylodes oil, or the bird repellent essential oil is composed of eucalyptus essential oil, atractylodes oil, patchouli oil, sage essential oil and tea tree essential oil in a mass ratio of 1:1:1:1:1; the solvent is ethanol; and the emulsifier is Tween-80.

2. The gel-type bird repellent according to claim 1, characterized in that: The components of the gel-type bird repellent also include an antifreeze agent, which is one or both of ethylene glycol and propylene glycol.

3. The gel-type bird repellent according to claim 1, characterized in that: The components of the gel-type bird repellent further include a preservative, which is one or both of sodium benzoate and kasone.

4. The gel-type bird repellent according to claim 2, characterized in that: The antifreeze agent is 3 to 5 parts per 100 parts by weight of the bird repellent.

5. The gel-type bird repellent according to claim 3, characterized in that: The preservative is contained in 0.1 to 0.5 parts per 100 parts by weight of the bird repellent.

6. The gel-type bird repellent according to claim 1, characterized in that: Every 100 parts by weight of the gel-type bird repellent is composed of the following components in parts by weight: 4-5 parts of bird repellent essential oil, 3-5 parts of emulsifier, 3-5 parts of solvent, 3-5 parts of propylene glycol, 0.1-0.5 parts of kason and 1-2 parts of SAP water-absorbing resin, and the balance is water.

7. A method for preparing the gel-type bird repellent according to any one of claims 1 to 6, characterized in that: The following steps are involved: Firstly, the matrix and part of water are mixed to obtain a matrix component, then the bird repellent essential oil, solvent and emulsifier are mixed to obtain a bird repellent essential oil component, and then the bird repellent essential oil component and the matrix component are mixed evenly, and the remaining amount of water is added and stirred to obtain a uniform and fine gel-type bird repellent.

8. Use of the gel-type bird repellent according to any one of claims 1 to 6 in expelling birds.

Images