CN114375954B - Adsorption of CO by using chitosan as carrier to bind pyruvic acid 2 Mosquito-attracting composition as well as preparation method and application thereof - Google Patents
Adsorption of CO by using chitosan as carrier to bind pyruvic acid 2 Mosquito-attracting composition as well as preparation method and application thereof Download PDFInfo
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/36—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
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Abstract
The invention discloses a method for adsorbing CO by using chitosan as a carrier to bind pyruvic acid 2 Is prepared from the composition for attracting mosquito and its preparing process and application. Adsorption of CO by using chitosan as carrier to bind pyruvic acid 2 The mosquito-attracting composition is characterized in that chitosan is taken as a carrier to bind pyruvic acid to adsorb CO 2 The obtained gel-like mosquito-attracting composition, said CO 2 Added as a solid. The mosquito-attracting composition provided by the invention can simulate the smell of human bodies through the synergistic effect of the components, and can particularly adsorb CO 2 And can slowly release CO 2 Can trap Aedes albopictus and culex tiredness simultaneously.
Description
Technical field:
the invention belongs to the technical field of mosquito trapping, and in particular relates to a method for adsorbing CO by using chitosan as a carrier to bind pyruvic acid 2 Is prepared from the composition for attracting mosquito and its preparing process and application.
The background technology is as follows:
mosquitoes belong to the diptera, mosquito family, also known as "mosquitoes", which not only bite humans and animals, but also transmit many diseases such as malaria, dengue fever, filariasis, zika virus disease, epidemic encephalitis b, etc. In China, aedes mosquitoes transmit dengue fever, zika virus diseases, chikungunya fever and the like. Culex mainly transmits epidemic encephalitis B, which is one of mosquito-borne infectious diseases seriously harming human health. The mosquito in Guangzhou area is mosquito which is common outdoors (wild) and is aedes albopictus (Li Meiqing, etc.), the aedes albopictus density, the virus situation and the drug resistance of different seasons in the urban and rural areas of Guangzhou are monitored, chinese media biology and control journal 2013, 24 (2): 108-111), the mosquito which is common indoors (family and office) in Guangzhou area is culex tiredness (Liu Jie, etc., the effect of pyriproxyfen and S-methoprene on the anti-emergence effect of the culex tired young mosquitoes in the water collecting well of the building underground garage is compared and studied, chinese media biology and control journal 2021, 31 (6): 702-705).
The existing mosquito attracting technology comprises the following steps:
(1) Ultraviolet lamp mosquito-attracting device
The ultraviolet lamp is used for attracting mosquitoes, and a special ultraviolet light wave is emitted after the mosquito eradication lamp tube is lighted, and the wavelength is 365nm. By utilizing the phototactic characteristic that insects are sensitive to the light of the wave band, insects such as mosquitoes, flies and the like can be attracted. At present, the product mainly has a certain effect on trapping and killing the aedes albopictus, but cannot induce and kill the culex tiredness, which is insensitive to ultraviolet light waves, and the culex tiredness is the culex tiredness at night in Guangzhou areas.
(2) Mosquito-attracting device simulating human body smell
The host odor substances are important factors influencing the searching behavior and the blood sucking behavior of the mosquito host, and the searching of chemical substances with attracting effect on the mosquito from the host odor substances is an important way for developing novel attractants. Fatty acids, for example, are a major component of human sweat and have been shown to be involved in affecting mosquito host search behavior (Bosch et al, 2000). The inventors Wu Hua (2020 a,2020b,2021 a) reported that fatty acids such as acetic acid, propionic acid, octanoic acid are attractive not only to Aedes albopictus but also to culex tiredness. However, the mosquito-attracting composition is mainly used for monitoring scientific research mosquito vectors or has few indoor mosquito-attracting products with better effect in the market in field experiments.
(3)CO 2 As an attractant
CO 2 Is a remarkable sign indicating the existence of living hosts, and is therefore a common attractant for blood-sucking insects, and can be widely used for trapping blood-sucking insects. Carbon dioxide (CO) 2 ) Is a recognized substance with excellent attraction to mosquitoes (Li Jianquan et al, 2003; meraus et al, 2008; farajolahi et al, 2009; obenauer et al 2009; johnson et al 2012). At present, CO is mainly produced 2 The technology of (1) is dry ice and CO 2 The combustion of the steel cylinder and the propane,even including the current new technology of generating CO by electrolysis 2 All have inconvenient use and can not release CO continuously and stably 2 And the like.
The invention comprises the following steps:
the invention solves the problems existing in the prior art and provides a method for adsorbing CO by using chitosan as a carrier to bind pyruvic acid 2 The mosquito-attracting composition provided by the invention takes chitosan as a carrier to bind pyruvic acid to adsorb CO 2 The components in the mosquito-attracting composition have synergistic effect, and can simulate human body smell, especially slowly release CO 2 Can trap Aedes albopictus and culex tiredness simultaneously.
The invention aims to provide a method for adsorbing CO by using chitosan as a carrier to bind pyruvic acid 2 The mosquito-attracting composition is characterized in that chitosan is taken as a carrier to bind pyruvic acid to adsorb CO 2 The obtained gel-like mosquito-attracting composition, said CO 2 Add as a solid (dry ice).
The invention takes chitosan as a carrier to bind pyruvic acid to form a chitosan pyruvic acid gel system, and the system can adsorb and store carbon dioxide (CO) at normal temperature and normal pressure 2 ) High pressure is not required.
According to the principle of similar compatibility, substances with similar molecular structures can be mutually adsorbed, so that pyruvic acid can adsorb a certain amount of carbon dioxide (CO) 2 ). While the chitosan structural unit has-NH 2 Groups which are very reactive with acids to form salts, so that chitosan can be dissolved in pyruvic acid to form a [ chitosan ]][ pyruvic acid]Ammonium salt ionic liquid. The Ionic Liquid (IL) is a low-temperature molten salt composed of anions and cations, and has the characteristics of low vapor pressure, good stability, liquid Cheng Kuan, good gas absorption performance, designability and the like (Welton, 1999;Hallett and Welton,2011). Thus, the ionic liquid is adsorbing CO 2 Aspects have wide application (Wang et al, 2011; yang Tao et al 2012; liu Weiwei et al, 2012; luo et al, 2014; li Guihua et al, 2015). So that the chitosan can bind the pyruvic acid to adsorb a certain amount of CO 2 . In the chitosan pyruvic acid system, addDry ice (CO) 2 ) In the stirring process of dry ice, the condensed water drops are continuously vaporized to form partial carbonated water, at the moment, the chitosan can not only bind pyruvic acid, but also bind partial carbonated water, and the pyruvic acid bound by the chitosan can adsorb carbon dioxide (CO) 2 ) The whole chitosan pyruvic acid gel system forms an adsorption storage carbon dioxide (CO 2 ) Is environment friendly. Whereas pyruvic acid is a tricarbonyl acid produced in vivo, which is the final product of the glycolytic pathway and is also one of the human odors.
Preferably, the chitosan, pyruvic acid and CO 2 The mass ratio of (2) is 1:10-40:0.1136-0.3621.
Further preferably, the chitosan, pyruvic acid and CO 2 The mass ratio of (2) is 1:25:0.3621.
The second purpose of the invention is to protect the adsorption of CO by using chitosan as a carrier to bind pyruvic acid 2 The preparation method of the mosquito-attracting composition comprises the following steps: and (3) stirring chitosan and pyruvic acid, adding carbon dioxide, and fully stirring until carbon dioxide is vaporized and disappears, thus obtaining the mosquito-attracting composition.
A third object of the present invention is to provide a mosquito attractant comprising an effective amount of the above mosquito attracting composition.
Preferably, the mosquito attractant is in the form of emulsion, ointment, tincture, spray or aerosol.
The fourth object of the invention is to protect the application of the mosquito-attracting composition in trapping mosquitoes.
Preferably, the mosquito is Aedes albopictus and/or Culex tiredness.
Compared with the prior art, the invention has the following advantages:
the mosquito-attracting composition provided by the invention can simulate the smell of human bodies through the synergistic effect of the components, and can particularly adsorb CO 2 And can slowly release CO 2 Can trap Aedes albopictus and culex tiredness simultaneously.
Description of the drawings:
FIG. 1 shows the efficacy of various mosquito-attracting compositions on the trapping of Aedes albopictus;
FIG. 2 shows the efficacy of various mosquito-lured compositions on culex tiredness trapping;
FIG. 3 is a trap mosquito attracting apparatus used in examples 1-9;
reference numerals illustrate: 1. a tub body; 2. an adhesive; 3. mosquito-attracting composition.
The specific embodiment is as follows:
the following examples are further illustrative of the invention and are not intended to be limiting thereof.
Unless specifically stated, the experimental materials and reagents in the present invention are all commercially available products conventional in the art.
As shown in fig. 3, the self-made trap mosquito-attracting device comprises a barrel body 1 and a mosquito-attracting composition 3 arranged in the barrel body 1, wherein an adhesive 2 is arranged on the inner wall of the barrel body 1, and the self-made trap mosquito-attracting device is used for attracting mosquitoes in the following embodiments.
Example 1
Trap mosquito-attracting device: a layer of fly sticking glue is brushed inside the 14L square black dustbin. Mosquito-attracting composition: taking 1g of chitosan and 5g of pyruvic acid, fully stirring, and adding dry ice (CO 2 ) Bars were about 10g (excess). Stirring was carried out thoroughly until dry ice (CO 2 ) The rod is vaporized and disappears to obtain the mosquito-attracting composition in the form of solid-liquid mixture, and the chitosan pyruvic acid system adsorbs carbon dioxide (CO) 2 ) 0.0120g, i.e. chitosan: pyruvic acid: CO 2 The mass ratio of (2) is 1:5:0.0120. Taking a solid-liquid mixture (density: 1.50 g/cm) 3 ) 2g of the mosquito-attracting composition was subjected to a mosquito-attracting test.
Example 2
Trap mosquito-attracting device: a layer of fly sticking glue is brushed inside the 14L square black dustbin. Mosquito-attracting composition: taking 1g of chitosan and 10g of pyruvic acid, fully stirring, and adding dry ice (CO 2 ) Bars were about 10g (excess). Stirring was carried out thoroughly until dry ice (CO 2 ) The rod is vaporized and disappears to obtain a thick paste mosquito-attracting composition, and the chitosan pyruvic acid system adsorbs carbon dioxide (CO) 2 ) 0.1136g, chitosan: pyruvic acid: CO 2 The mass ratio of (2) is 1:10:0.1136. Taking thick paste (density: 1.40 g/cm) 3 ) 2g of the mosquito-attracting composition was subjected to a mosquito-attracting test.
Example 3
Trap mosquito-attracting device: a layer of fly sticking glue is brushed inside the 14L square black dustbin. Mosquito-attracting composition: taking 1g of chitosan and 25g of pyruvic acid, fully stirring, and adding dry ice (CO 2 ) Bars were about 10g (excess). Stirring was carried out thoroughly until dry ice (CO 2 ) The rod is vaporized and disappears to obtain gel-like mosquito-attracting composition, and the chitosan pyruvic acid system adsorbs carbon dioxide (CO) 2 ) 0.3621g, chitosan: pyruvic acid: CO 2 The mass ratio of (2) is 1:25:0.3621. Gel-like (density: 1.35 g/cm) 3 ) 2g of the mosquito-attracting composition was subjected to a mosquito-attracting test.
Example 4
Trap mosquito-attracting device: a layer of fly sticking glue is brushed inside the 14L square black dustbin. Mosquito-attracting composition: taking 1g of chitosan and 40g of pyruvic acid, fully stirring, and adding dry ice (CO 2 ) Bars were about 10g (excess). Stirring was carried out thoroughly until dry ice (CO 2 ) The rod is vaporized and disappears to obtain a viscous liquid mosquito-attracting composition, and the chitosan pyruvic acid system adsorbs carbon dioxide (CO) 2 ) 0.3580g, chitosan: pyruvic acid: CO 2 The mass ratio of (2) is 1:40:0.3580. Taking a viscous liquid (density: 1.30 g/cm) 3 ) 2g of the mosquito-attracting composition was subjected to a mosquito-attracting test.
Example 5
Trap mosquito-attracting device: a layer of fly sticking glue is brushed inside the 14L square black dustbin. Mosquito-attracting composition: taking 1g of chitosan and 55g of pyruvic acid, fully stirring, and adding dry ice (CO 2 ) Bars were about 10g (excess). Stirring was carried out thoroughly until dry ice (CO 2 ) The rod is vaporized and disappears to obtain liquid mosquito-attracting composition, and the chitosan pyruvic acid system adsorbs carbon dioxide (CO) 2 ) 0.3041g, chitosan: pyruvic acid: CO 2 The mass ratio of (2) is 1:55:0.3041. In liquid form (density: 1.25 g/cm) 3 ) 2g of the mosquito-attracting composition was subjected to a mosquito-attracting test.
Example 6
Trap mosquito-attracting device: a layer of fly sticking glue is brushed inside the 14L square black dustbin. Mosquito-attracting composition: taking 1g of chitosan and 25g of pyruvic acid, and fully stirring to obtain a gel-like mosquito-attracting composition, namely chitosan: the mass ratio of pyruvic acid is 1:25. 2g of gel-like mosquito-attracting composition was used for a mosquito-attracting test.
Example 7
Trap mosquito-attracting device: a layer of fly sticking glue is coated in the 14L square black dustbin. Mosquito-attracting composition: 2g of pyruvic acid.
Example 8
Trap mosquito-attracting device: a layer of fly sticking glue is coated in the 14L square black dustbin. Mosquito-attracting composition: dry ice (CO) 2 ) Stick 2g.
Example 9
Trap mosquito-attracting device: a layer of fly sticking glue is coated in the 14L square black dustbin. Mosquito-attracting composition: and 2g of chitosan.
The trap mosquito-attracting apparatuses of examples 1 to 9 were subjected to the following test, in which no mosquito-attracting composition was added to the trap mosquito-attracting apparatus, and 500g of pure water was added as a control group.
Test environment:
the animal institute of academy of sciences in Guangdong was used as a test site. The roadside trees in the college mainly comprise red flower bauhinia, kapok tree, mango tree, white yulan, wax apple tree and big leaf banyan, the flower base under the tree is surrounded, and a small lawn is arranged. The green belts around the building are mainly planted with flowers She Geguo taro and green arundo. The whole college is the suitable environment for mosquitoes, and more mosquitoes exist.
The investigation method comprises the following steps:
the trap mosquito-attracting devices and the control groups in examples 1 to 9 are simultaneously placed in each of the 5 groups, the distance between the trap mosquito-attracting devices is 2m, and the 1 group is 1 repetition and 5 repetitions. The number of the trapping Aedes albopictus and Culex tiredness was investigated daily and the trapped individuals were cleared. The position of the trap mosquito-attracting device was changed again randomly 1 time every 5 days of investigation.
After the test of each stage is finished, adding the trapping amount of the same trap mosquito trapping device in different days for 5 days, namely the accumulated trapping amount of the trap mosquito trapping device; divided by the number of repetitions of the trap mosquito trapping device (n=5), is referred to as the "average cumulative trapping amount". The experimental data were subjected to comparative mean analysis using SPSS 24.0 software, one-way ANOVA test, post-hoc multiple comparison (R-E-G-W range) treatment, and P <0.05 was statistically significant for differences.
TABLE 1 Effect of different mosquito-attracting compositions on the attracting effects of Aedes albopictus and Culex tiredness
The data in the table are mean number ± standard deviation (n=5); the different lower case letters indicate that there is a significant difference in P < 0.05.
As can be seen from Table 1, examples 1 to 8 have remarkable mosquito attracting effects (P < 0.05) on Aedes albopictus and culex tiredness, as compared with the control pure water. Example 9 (chitosan) showed no mosquito trapping activity, and showed a lower amount of mosquito trapping than the control pure water. Wherein the average accumulated trapping amount of the aedes albopictus and the culex tiredness in examples 2-4 is more than 3 times of that of the control pure water. Examples 2 to 4 (Chitosan: pyruvic acid: CO) 2 ) With example 6 (chitosan: pyruvic acid), example 7 (pyruvic acid), example 8 (CO 2 ) Compared with example 9 (chitosan), the chitosan-based adsorption of CO by the bound pyruvic acid has obvious difference (P < 0.05) to Aedes albopictus and Culex tirizi 2 As a mosquito-attracting composition, the components have synergistic effect. In example 3 (Chitosan: pyruvic acid: CO) 2 =1:25:0.3621) the mosquito-attracting effect is best.
The efficacy of different mosquito-attracting compositions on trapping Aedes albopictus and culex tiredness
Examples 2 to 4 (chitosan: pyruvic acid: CO) in Table 1 were selected to have remarkable mosquito attracting effect 2 ) Example 6 (chitosan: pyruvic acid), example 7 (pyruvic acid), example 8 (CO 2 ) The efficacy test was performed against pure water, and the efficacy test was not performed in example 9 (chitosan) without mosquito attracting activity.
The lasting effect of different mosquito-attracting compositions on Aedes albopictus and culex tiredness is shown in figure 1 and figure 2. Examples 2 to 4 the trapping amount of Aedes albopictus and culex tiredness was maintained at 3 times the trapping amount of the control pure water for 60 days. Example 6 (Chitosan: pyruvic acid) and example 7 (Propion)Keto acid), example 7 showed that the trapping amounts of Aedes albopictus and culex tiredness were comparable to those of the control pure water after 30 days, whereas the trapping amounts of Aedes albopictus and culex tiredness of example 6 were higher than those of the control pure water within 60 days, and the total number of induced mosquitoes was 1.47 times and 1.42 times that of example 7 for 60 days, indicating that chitosan had a slow release effect on pyruvic acid. Examples 2 to 4 (Chitosan: pyruvic acid: CO) 2 ) With example 6 (chitosan: pyruvic acid), the trapping amounts of the aedes albopictus and the culex tiredness in examples 2 to 4 are higher than those in example 6 within 60 days, wherein the total mosquito trapping amount of the aedes albopictus is 1.49 to 1.78 times that in example 6, and the total mosquito trapping amount of the culex tiredness is 1.55 to 1.85 times that of example 6, indicating CO 2 Has synergistic effect on chitosan pyruvic acid system. Examples 2 to 4 (Chitosan: pyruvic acid: CO) 2 ) And example 8 (Dry Ice CO 2 ) In comparison, examples 2 to 4 maintained trapping amounts of 3 times that of the control pure water for 60 days for both Aedes albopictus and culex tiredness, example 8 (dry ice CO 2 ) After 5 days, the volatile is completed, the trapping quantity of Aedes albopictus is always lower than that of the control pure water after 5 days, and the trapping quantity of the culex tiredness is equivalent to that of the control pure water after 5 days, which indicates that the chitosan-bound pyruvic acid can adsorb CO 2 Playing a role of slowly releasing CO 2 Is effective in (1).
The above embodiments are only described to assist in understanding the technical solution of the present invention and its core idea, and it should be noted that it will be obvious to those skilled in the art that several improvements and modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
Claims (6)
1. Adsorption of CO by using chitosan as carrier to bind pyruvic acid 2 The mosquito-attracting composition is characterized in that chitosan is used as a carrier to bind pyruvic acid to adsorb CO 2 The obtained gel-like mosquito-attracting composition, said CO 2 Added in solid form; said chitosan, pyruvic acid and CO 2 The mass ratio of (2) is 1:10-40:0.1136-0.3621.
2. The adsorption of CO by chitosan-supported bound pyruvic acid according to claim 1 2 The mosquito-attracting composition is characterized in that the chitosan, the pyruvic acid and the CO 2 The mass ratio of (2) is 1:25:0.3621.
3. The adsorption of CO by chitosan-bound pyruvic acid as claimed in claim 1 or 2 2 The preparation method of the mosquito-attracting composition is characterized by comprising the following steps: stirring chitosan and pyruvic acid, adding carbon dioxide, stirring thoroughly until carbon dioxide vaporization disappears, and obtaining the CO adsorbed by pyruvic acid bound by chitosan as carrier 2 Is a mosquito-attracting composition.
4. A mosquito attractant comprising an effective amount of chitosan-bound pyruvic acid to adsorb CO according to claim 1 2 Is a mosquito-attracting composition.
5. The mosquito attractant of claim 4, wherein the mosquito attractant is in the form of an emulsion, a paste, a tincture, a spray or an aerosol.
6. The method for adsorbing CO by using chitosan as carrier to bind pyruvic acid as claimed in claim 1 2 The application of the mosquito-attracting composition in trapping mosquitoes is characterized in that the mosquitoes are Aedes albopictus and/or Culex tiredness.
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