Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Antibiotics in the environment

25.03.2004


Scientists discover a method to detect trace levels of swine antibiotics in the groundwater.



Scientists from the Department of Soil, Water, & Climate at University of Minnesota have developed a simple method to quantify two types of antibiotics in animal manures, and surface and ground waters. Chlortetracycline and tylosin antibiotics are commonly used for growth promotion in swine production.

In general, as much as 90% of antibiotics fed to food animals are excreted unchanged in animal feces and urine. Researcher Kudlip Kumar explains that these animal wastes when applied to fields present a potential for the spread of antibiotics in the environment via non-point source pollution.


According to Kumar, there is not much information about the concentration of various antibiotics in manure or surface and ground waters, probably due to lack of simple methods to analyze these antibiotics at very low concentrations in various environmental samples.

In this study, the researchers developed a simple method for ultra trace determination of chlortetracycline and tylosin antibiotics. Tests of a few swine manure samples showed that they contained as high as 7.9 mg/L chlortetracycline and 5.2 mg/L tylosin. The method developed by these researchers is very sensitive and can pick-up antibiotics in surface or ground waters at parts per billion levels. The study is published in January/February 2004 issue of the Journal of Environmental Quality, published by the American Society of Agronomy-Crop Science Society of America and Soil Science Society of America.

This study was part of the research project led by Satish Gupta on fate and transport of manure applied antibiotics on land. In this project, Gupta and his team quantified the extent of antibiotics losses in rainfall and snowmelt runoff as well as through drainage from manure applied lands. There is an increasing concern that sub-therapeutic feeding of antibiotics in animal agriculture is increasing microbial resistance in the environment. As it appears very small amounts of antibiotics move in solution form and thus this new measuring method is highly useful in quantifying these trace amount of antibiotics in aquatic environment. Gupta states that small amounts of antibiotics are generally not toxic to plants and aquatic life, but on repeated manure application there is some potential for increase in antibiotic resistant bacteria in the environment. This is another facet that Gupta and his team are quantifying.



Results of the study are published in the January/February 2004 issue of the Journal of Environmental Quality. Online subscribers can access the full article; nonsubscribers can access the abstract, or pay a $10 per-article fee, or buy a $25, 14-day site pass, at: http://jeq.scijournals.org/cgi/content/abstract/33/1/250

The Journal of Environmental Quality, http://jeq.scijournals.org is a peer-reviewed, international journal of environmental quality in natural and agricultural ecosystems published six times a year by the American Society of Agronomy (ASA), Crop Science Society of America (CSSA), and the Soil Science Society of America (SSSA). The Journal of Environmental Quality covers various aspects of anthropogenic impacts on the environment, including terrestrial, atmospheric, and aquatic systems.

The American Society of Agronomy (ASA) http://www.agronomy.org, the Crop Science Society of America (CSSA) http://www.crops.org and the Soil Science Society of America (SSSA) http://www.soils.org are educational organizations helping their 10,000+ members advance the disciplines and practices of agronomy, crop, and soil sciences by supporting professional growth and science policy initiatives, and by providing quality, research-based publications and a variety of member services.

Sara Uttech | EurekAlert!
Further information:
http://www.asa-cssa-sssa.org/
http://jeq.scijournals.org/cgi/content/abstract/33/1/250
http://jeq.scijournals.org

More articles from Agricultural and Forestry Science:

nachricht Researchers discover a new link to fight billion-dollar threat to soybean production
14.02.2017 | University of Missouri-Columbia

nachricht Important to maintain a diversity of habitats in the sea
14.02.2017 | University of Gothenburg

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Positrons as a new tool for lithium ion battery research: Holes in the electrode

22.02.2017 | Power and Electrical Engineering

New insights into the information processing of motor neurons

22.02.2017 | Life Sciences

Healthy Hiking in Smart Socks

22.02.2017 | Innovative Products

VideoLinks
B2B-VideoLinks
More VideoLinks >>>