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  • From: "Lon J. Rombough" <lonrom@hevanet.com>
  • To: NAFEX <nafex@lists.ibiblio.org>
  • Subject: [NAFEX] Fwd: Sugar That's Not So Sweet for Insects
  • Date: Thu, 2 Jun 2005 07:05:12 -0700




Begin forwarded message:

From: ARS News Service <NewsService@ars.usda.gov>
Date: June 2, 2005 6:33:23 AM PDT
To: ARS News subscriber <lonrom@hevanet.com>
Subject: Sugar That's Not So Sweet for Insects
Reply-To:
ARS News Service <NewsService@ars.usda.gov>

STORY LEAD:
A Sugar That's Not So Sweet for Insect Pests
___________________________________________

ARS News Service
Agricultural Research Service, USDA
Rosalie Marion Bliss, (301) 504-4318, rbliss@ars.usda.gov
June 2, 2005
___________________________________________

A newly introduced class of insecticidal compounds developed by the Agricultural Research Service (ARS) and cooperators offers safe and effective alternatives to conventional chemical insecticides.

The active ingredients are based on sugar esters that are natural chemicals secreted by wild tobacco plants to protect themselves against insect predators. When certain insects rub up against and chew on the plants' leaf hairs, the insects become contaminated with the compound and die.

ARS entomologist Gary J. Puterka, working with industry cooperators, developed synthetic analogs, or look-alikes, of the natural sugar esters. He and colleagues then screened various synthetic sugar esters to find the most potent among them. While working at the ARS Appalachian Fruit Research Station in Kearneysville, W.Va., Puterka identified several of the new chemical forms that kill test insects instantly.

Puterka has been named a co-inventor on two patents that define the chemical structures of the compounds, as well as an environmentally sound process for their manufacture. One of the compounds, sorbitol octanoate, has proved less costly to produce than earlier forms patented, and is now undergoing the process of registration with the U.S. Environmental Protection Agency.

The analogs kill by breaking down the insect pests' outer waxy coating. Then the insects lose water and die from dehydration. The new class of compounds is unique among insecticides because their active ingredients do not leave a detrimental residue on surfaces to which they are applied. What's left over after application becomes inactive upon drying and rapidly degrades.

The latest synthetic sugar esters, if licensed, could be a boon to the home and garden market, according to Puterka. Licensing information with the ARS Office of Technology Transfer can be found on the World Wide Web at: http://www.ars.usda.gov/business/docs.htm?docid=768

Read more about the research in the June 2005 issue of Agricultural Research magazine:
http://www.ars.usda.gov/is/AR/archive/jun05/insect0605.htm

ARS is the U.S. Department of Agriculture's chief in-house scientific research agency.
___________________________________________

* This is one of the news reports that ARS Information distributes to subscribers on weekdays.
* Start, stop or change an e-mail subscription at www.ars.usda.gov/is/pr/subscribe.htm
* NewsService@ars.usda.gov | www.ars.usda.gov/news
* Phone (301) 504-1638 | fax (301) 504-1486





  • [NAFEX] Fwd: Sugar That's Not So Sweet for Insects, Lon J. Rombough, 06/02/2005

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