CN-121986781-A - Application of n-octadecane in preparation of pest repellent

Abstract

The invention belongs to the field of pest repellents, and particularly relates to application of n-octadecane in preparation of a pest repellent. The invention screens out n-octadecane (n-octadecane, CAS number 593-45-3) from chemical signal substances on the surface of the white crab spider and has obvious behavior regulation activity. The behavioural experiment proves that the pest repellent taking the n-octadecane as the only effective repellent component can obviously induce the repellent behavior of blattariaceae, blattaceae and other blattaria pests. The invention provides a novel, environment-friendly and efficient pest control product and a pest control method.

Inventors

• LIU JIHE
• ZHAO ZEYU
• ZHANG ZHIMIN
• HUANG SHAOBIN
• LIANG YUN
• XIAO YONGHONG

Assignees

• 井冈山大学

Dates

Publication Date

20260508

Application Date

20260131

Claims (10)

1. 1. The application of the n-octadecane in preparing the pest repellent is characterized in that the pest repellent takes the n-octadecane as an active repellent component, and the pests are cockroaches.
2. 2. The use of n-octadecane according to claim 1 for the preparation of a pest repellent, wherein the pest is a blattaria pest or a Blatta pest.
3. 3. The use of n-octadecane according to claim 1 for the preparation of a pest repellent, wherein the pest is periplaneta limicola She Shi, periplaneta americana, german cockroach or oriental cockroach.
4. 4. The pest repellent for preventing and controlling blattaria pests is characterized by taking the n-octadecane as an active repellent component in the method of claim 1, wherein the blattaria pests are blattaidae pests or Blattaidae pests.
5. 5. The pest repellent according to claim 4, further comprising at least one of a solvent, a surfactant, a slow-release carrier, a thickener, an attractant, or a preservative.
6. 6. The pest repellent according to claim 4, wherein the pest repellent is in the form of a spray, gel, slow-release granule or spread.
7. 7. The pest repellent according to claim 4, wherein the pest repellent is composed of n-octadecane and a methylene chloride solution, and the mass ratio of n-octadecane in the pest repellent is 10% -50% based on the volume of the pest repellent.
8. 8. The pest repellent according to claim 7, wherein the mass ratio of n-octadecane in the pest repellent is 40% by volume of the pest repellent.
9. 9. A method for controlling pests, characterized in that the pest repellent according to claim 4 is sprayed or placed or applied on a locus or surface where pest control is desired.
10. 10. The method according to claim 9, wherein the pest is a blattaidae pest or a blattaidae pest.

Description

Application of n-octadecane in preparation of pest repellent Technical Field The invention belongs to the field of pest repellents, and particularly relates to application of n-octadecane in preparation of a pest repellent. Background In the field of public health pest control, the application of traditional chemical pesticides is facing serious challenges due to the ubiquitous problems of drug resistance, drug residues, ecological influence and environmental pollution. The blattaria pests commonly called cockroaches are important sanitary pests and widely exist in the environments of families, restaurants, food processing factories and the like, and transmit pathogens, pollute foods and cause allergic reactions. Taking such important sanitary pests as examples, the control of the sanitary pests is always dependent on chemical pesticides, however, the methods have the problems that the pests are easy to generate drug resistance after long-term use, the control effect is gradually reduced, drug residues can cause potential threats to human health and environment, and meanwhile, chemical agents can cause harm to non-target organisms and destroy ecological balance. Therefore, finding a safe, efficient and environmentally friendly alternative is an important direction of current research. In recent years, biological source control methods, particularly pest repellent by using pheromone technology, have become a hot spot for product development. Pheromones are volatile chemicals released by organisms for inter-individual communication, including aggregation, alarm or evasion signals. The white crab spider (Heteropoda venatoria) is a common predatory spider, and the body surface of the white crab spider possibly releases volatile pheromone with a repellent effect, thereby providing a new potential way for pest control. Therefore, the excavation of natural pheromones from natural enemies such as spiders and the like for repelling cockroaches is a key to the development of efficient and specific green pest control means. Disclosure of Invention In order to solve the problems, the invention provides the application of the n-octadecane in preparing the pest repellent, the invention extracts and screens the chemical substance, namely the n-octadecane from the chemical signal substances on the surface of the white crab spider, and the n-octadecane is disclosed for the first time to be used for preparing the efficient and safe pest repellent, and has obvious repellent effect on cockroaches such as cockroaches and the like. In order to achieve the above purpose, the specific technical scheme of the invention is as follows: The first aspect of the invention provides an application of n-octadecane in preparing a pest repellent, wherein the CAS number of the n-octadecane is 593-45-3, the pest repellent takes the n-octadecane as an active repellent component, and the pest is a blattaria pest. Further, the pest is a blattaria pest or a Blatta seu periplaneta pest. Further, the pest is periplaneta americana (Blatta latifolia ‌), periplaneta americana (PERIPLANETA AMERICANA), german cockroach (‌ Blattella germanica) or blattaria orientalis (Blatta orientalis). The second aspect of the present invention provides a pest repellent for controlling cockroaches, which comprises the n-octadecane as an active repellent ingredient. Further, the pest is a blattaria pest or a Blatta seu periplaneta pest. Further, the blattaria pest is periplaneta She Shi, periplaneta americana, german cockroach or blattaria orientalis. Further, the pest repellent further comprises at least one of a solvent, a surfactant, a slow release carrier, a thickener, an attractant, or a preservative. Further, the formulation of the pest repellent is spray, gel, slow-release particles or smearing agent. Further, the pest repellent consists of n-octadecane and methylene dichloride solution, wherein the mass ratio of the n-octadecane in the pest repellent is 10% -50% based on the volume of the pest repellent. Further, the mass ratio of n-octadecane in the pest repellent is 40% based on the volume of the pest repellent. Further, the purity of the dichloromethane was >99.9%. In a third aspect, the present invention provides a method for controlling pests, wherein the pest repellent is sprayed or placed or smeared on a site or surface where pest control is desired. Further, the pest is a blattaria pest. Further, the pest is a blattaria pest or a Blatta seu periplaneta pest. Further, the pest is periplaneta americana, german cockroach or blattaria orientalis. Compared with the prior art, the invention has the beneficial effects that: The invention provides an application of n-octadecane in preparing insect repellent. The invention extracts and screens out chemical substance n-octadecane (n-octadecane) with obvious evading effect from the body surface of the giant crab spider, and finds that the chemical substance n-octadecane can obviously induce the evading behavior of c