Secret Site Map
Saturday, August 23, 2014

Home News Scientists Identify Insect-Repelling Compounds in Jatropha

Scientists Identify Insect-Repelling Compounds in Jatropha

A tip about a folk remedy plant used in India and Africa to ward off bugs has led to the discovery of insect-repelling compounds.

| November 20, 2013

A tip about a folk remedy plant used in India and Africa to ward off bugs has led to the discovery of insect-repelling compounds.

U.S. Department of Agriculture (USDA) scientists have identified components of Jatropha curcas seed oil that are responsible for mosquito repellency. Researchers at the Agricultural Research Service (ARS) Natural Products Utilization Research Unit (NPURU) in Oxford, Miss., often find effective plant-derived compounds to deter insects by gathering plants in the wild and investigating those used in traditional folk remedies. ARS is USDA's principal intramural scientific research agency.

After learning that people in India burn J. curcas seed oil in lamps to keep insects out of their homes and other areas, NPURU chemist Charles Cantrell extracted smoke from the plant in a laboratory and analyzed its properties. Free fatty acids and triglycerides were among a number of active compounds found to be effective at preventing mosquitoes from biting.

Researchers have known for some time that fatty acids repel insects, but this was the first known report that identified triglycerides as having mosquito repellent activity, according to Cantrell.

Working closely with colleagues at ARS and the National Center for Natural Products Research at the University of Mississippi, Cantrell is exploring additional promising compounds from other plants. By combining these or similar compounds from other plants with those in Jatropha species, scientists might be able to develop a more effective produc

Top news

European Bee Health Levels Improve, Bayer Reports

New field data from nearly 400,000 bee colonies from 21 countries in Europe and the Mediterranean show that overwintering losses of honey bee colonies – a leading indicator of general bee health – are at their lowest level in years.

California Movie Theater Closes Due to Bed Bug Concerns

A bed bug infestation has shut down Lodi Stadium 12 Cinemas Sunday afternoon until Tuesday after concerns from customers were raised on the theater's Facebook page.

EcoRaider RTU Extends Distribution

Reneotech, Inc., North Bergen, N.J. announced the release of EcoRaider RTU Professional insect killer, designed for the professional market.

Terminix-Triad Dog Teams Inspect Triad Furniture Bank

The company partnered with The Barnabas Network to make sure people forced out of Heritage House have clean, safe furniture as they settle into their new new homes, triadnc.twcnews.com reports.

CropLife America Recognized National Honey Bee Day

CLA stressed the importance of supporting bee health and noted that recent overwintering loss surveys indicate improvements in managed honey bee colony population levels.