Featured Research

from universities, journals, and other organizations

Filtering out pesticides with genetically modified bacteria

Date:
April 14, 2011
Source:
Inderscience Publishers
Summary:
Genetically modified bacteria could be used in air filters to extract pesticide vapors from polluted air, new research shows.

Genetically modified bacteria could be used in air filters to extract pesticide vapors from polluted air thanks to work by researchers in China published this month in the International Journal of Environment and Pollution.

The bacteria Escherichia coli is perhaps best known as a bacterium that can cause food poisoning and in one form, the O157:H7, can damage the kidneys and even be lethal. However, E coli, is commonly used in biological research as a model organism for a wide range of beneficial experiments. Now, researchers in China have discovered that a genetically modified form of the bacteria can be used in a biofilter to extract the toxic pesticides, parathion and methyl parathion from the air.

Junxin Liu of the Chinese Academy of Sciences in Beijing, and colleagues have demonstrated average removal efficiencies of 95.2% for parathion and 98.6% for methyl parathion using a biofilter based on the engineered bacteria E. coli BL21. Optimization of the system might allow up to 100% removal. The team explains that compared to conventional biofilters, their system was far more effective, especially in the initial stages of filtering. The pesticides are broken down to p-nitrophenol as well as nitrate and sulfate byproducts. These byproducts are then quickly "mineralized" by other naturally occurring microbes present in the biofilter.

Organophosphorus pesticides, including parathion and methyl parathion, are highly effective agrochemicals amounting to more than a third of agricultural crop protection worldwide. Unfortunately, they can accumulate in the environment and pose a risk to human health under some conditions. Bioremediation of water and soil using bacteria that can break down these compounds is being developed. However, Liu and colleagues have focused on air purification using biofilters.


Story Source:

The above story is based on materials provided by Inderscience Publishers. Note: Materials may be edited for content and length.


Journal Reference:

  1. n Li, Chao Yang, Yaqi He, Chuanling Qiao, Junxin Liu. Simultaneous removal of parathion and methyl parathion by genetically engineered Escherichia coli in a biofilter treating polluted air. International Journal of Environment and Pollution, 2011; 45 (1/2/3): 3 DOI: 10.1504/IJEP.2011.039080

Cite This Page:

Inderscience Publishers. "Filtering out pesticides with genetically modified bacteria." ScienceDaily. ScienceDaily, 14 April 2011. <www.sciencedaily.com/releases/2011/04/110414104211.htm>.
Inderscience Publishers. (2011, April 14). Filtering out pesticides with genetically modified bacteria. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2011/04/110414104211.htm
Inderscience Publishers. "Filtering out pesticides with genetically modified bacteria." ScienceDaily. www.sciencedaily.com/releases/2011/04/110414104211.htm (accessed October 21, 2014).

Share This



More Plants & Animals News

Tuesday, October 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

White Lion Cubs Born in Belgrade Zoo

White Lion Cubs Born in Belgrade Zoo

AFP (Oct. 20, 2014) Two white lion cubs, an extremely rare subspecies of the African lion, were recently born at Belgrade Zoo. They are being bottle fed by zoo keepers after they were rejected by their mother after birth. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
Traditional Farming Methods Gaining Ground in Mali

Traditional Farming Methods Gaining Ground in Mali

AFP (Oct. 20, 2014) He is leading a one man agricultural revolution in Mali - Oumar Diatabe uses traditional farming methods to get the most out of his land and is teaching others across the country how to do the same. Duration: 01:44 Video provided by AFP
Powered by NewsLook.com
Goliath Spider Will Give You Nightmares

Goliath Spider Will Give You Nightmares

Buzz60 (Oct. 20, 2014) An entomologist stumbled upon a South American Goliath Birdeater. With a name like that, you know it's a terrifying creepy crawler. Sean Dowling (@SeanDowlingTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Adorable Video of Baby Rhino and Lamb Friend Playing

Adorable Video of Baby Rhino and Lamb Friend Playing

Buzz60 (Oct. 20, 2014) Gertjie the Rhino and Lammie the Lamb are teaching the world about animal conservation and friendship. TC Newman (@PurpleTCNewman) has the adorable video! Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins