New tool for researchers to help develop safe pesticides

pesticide

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There is not enough health and safety data for most commercial chemicals to enter the market in America each year. For pesticides, the U.S. Environmental Protection Agency uses a variety of methods to fill in the data in order to assess chemical hazard, sensitivity and risk. However, there has been growing public concern about the threat of these chemicals in recent years, recognizing that conventional animal testing methods by speed, industry or methods are not pragmatic. . Now, researchers at George Washington University have developed a new statistical method that quickly monitors pesticides for safety, performance and longevity in the environment. In addition, and most importantly, the new approach will help the development of next -generation molecules to develop safe pesticides.

“In many ways, our tool is similar to the knowledge of medicine, where large libraries of chemical compounds are checked for their usefulness and then converted into more potent ones. they are against specific therapeutic goals, ”says Jakub Kostal, a professor of chemistry at GW. and principal investigator on the project, said. “Similarly, we use our regulatory system to modify pesticides that are less toxic and more degradable, while, at the same time, ensuring that the maintenance is in good working order… Fresh and safe. analogs of existing agrochemical industries, thus protecting human life, the environment and the bottom line of the industry. ”

Using their model, the team analyzed 700 pesticides from the EPA’s pesticide list. The model considered the persistence or damage of the pesticide to the environment over time, its safety, and its effectiveness in killing, reversing, or managing the problem. expected.

They found that only 52, or 7%, of the chemical compounds analyzed met the requirements for a safe chemical. According to the researchers, while the results from the study show that most pesticides are not safe, many can be saved by changing their molecular structure in ways that reduce their exposure. Drunk without performance.

“Our review suggests there is a potential for improvement in the development of safe pesticides,” said Jessica Lewer, a graduate student at GW and lead author on the paper. “In addition, the model we have developed can be used for better protection and design of safe pesticides as well as design and used in other industries that rely on commercial chemicals, for example cosmetics and cleaning products. ”

Going forward, the company hopes to expand their model with a pesticide application from biobased, renewable building blocks to advance the sustainable goals of chemical development.

The study, “Structure-to-Process Design Framework for Developing Safer Pesticides,” was published in the journal. Scientific advances on March 30, 2022.


And mosquitoes avoid pesticides after they don’t spread the disease


More information:
Jessica M. Lewer et al. Scientific advances (2022). DOI: 10.1126 / sciadv.abn2058. www.science.org/doi/10.1126/sciadv.abn2058

Presented by George Washington University

Directions: Researchers’ Journal to Assist in the Development of Safe Pesticides (2022, March 30) Retrieved March 31, 2022 from https://phys.org/news/2022-03-tool-safer -pesticides.html

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