Featured Research

from universities, journals, and other organizations

E-Noses: Testing Their Mettle Against Fly Noses

Date:
July 30, 2009
Source:
CSIRO Australia
Summary:
Scientists have developed a new system for comparing the sensory performance of electronic noses against that of the fly -- a breakthrough which should lead to improved e-nose performance.

Drosophila melanogaster – the fly whose olfactory receptors were used to benchmark the electronic nose.
Credit: Eric Hines

Scientists from CSIRO’s Food Futures Flagship have made a breakthrough in efforts to extend the sensory range of ‘electronic noses’ (e-noses) by developing a system for comparing their performance against the much-superior nose of the fly.

“Although e-noses already have many uses – such as detecting spoilage in the food industry and monitoring air quality – they are not as discriminating as biological noses,” according to CSIRO scientist, Dr Stephen Trowell.

“Our efforts to improve e-noses recently received a boost following our development of a new system which enables us to compare technical sensors with biological sensors.

“We looked at how the most common type of e-nose sensors – metal oxide or ‘MOx’ receptors – sample the air around them.  This is a critical factor in the performance of all noses. We then compared it with the performance of odorant receptors from the common house fly, Drosophila.

“We already know that fly receptors, unlike most other bioreceptors, are not very specific. Even so, it really surprised us how much narrower the responses of the MOx sensors were than the biological ones. We also found that the fly bioreceptors outperformed the MOx sensors in their levels of independence. The fly seems to make a range of broadly tuned receptors that are independent of each other and human engineers haven’t yet worked out how to do this.

“These results, published today in the science journal PLoS ONE, will help in the design of better e-noses and help us understand better how biological systems work,” Dr Trowell said.

Bio-benchmarking approaches such as this could also be applied to other classes of electronic nose sensors. The CSIRO research team is looking to collaborate with developers of solid-state chemical sensors in the search for more effective devices.

This research is part of a much larger project developing an improved electronic nose, the CybernoseŽ, for use in the wine industry. Using insect receptors, the Cybernose will detect volatiles and contaminants in grapes and wine, thus allowing winemakers to improve their wines. When completed, the Cybernose will have wide application for detecting ripeness and spoilage in a range of foods as well as other applications such as detecting explosives.

The comparisons between the fly’s receptors and those of the e-nose were made possible by recent descriptions of how odorant receptors function in Drosophila, which was the first insect to have its genome described. It was this new knowledge of the fly’s genome that made the fly odorant receptor work possible.


Story Source:

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


Journal Reference:

  1. Amalia Z Berna, Alisha R Anderson, Stephen C Trowell. Bio-benchmarking of electronic nose sensors. PLoS ONE, DOI: 10.1371/journal.pone.0006406

Cite This Page:

CSIRO Australia. "E-Noses: Testing Their Mettle Against Fly Noses." ScienceDaily. ScienceDaily, 30 July 2009. <www.sciencedaily.com/releases/2009/07/090729092541.htm>.
CSIRO Australia. (2009, July 30). E-Noses: Testing Their Mettle Against Fly Noses. ScienceDaily. Retrieved September 20, 2014 from www.sciencedaily.com/releases/2009/07/090729092541.htm
CSIRO Australia. "E-Noses: Testing Their Mettle Against Fly Noses." ScienceDaily. www.sciencedaily.com/releases/2009/07/090729092541.htm (accessed September 20, 2014).

Share This



More Matter & Energy News

Saturday, September 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

MIT BioSuit A New Take On Traditional Spacesuits

MIT BioSuit A New Take On Traditional Spacesuits

Newsy (Sep. 19, 2014) — The MIT BioSuit could be an alternative to big, bulky traditional spacesuits, but the concept needs some work. Video provided by Newsy
Powered by NewsLook.com
Virtual Reality Headsets Unveiled at Tokyo Game Show

Virtual Reality Headsets Unveiled at Tokyo Game Show

AFP (Sep. 18, 2014) — Several companies unveiled virtual reality headsets at the Tokyo Game Show, Asia's largest digital entertainment exhibition. Duration: 00:48 Video provided by AFP
Powered by NewsLook.com
Apple's iOS8 Includes New 'Killswitch' To Curb Theft

Apple's iOS8 Includes New 'Killswitch' To Curb Theft

Newsy (Sep. 18, 2014) — Apple's new operating system, iOS 8, comes with Apple's killswitch feature already activated, unlike all the models before it. Video provided by Newsy
Powered by NewsLook.com
Stocks Hit All-Time High as Fed Holds Steady

Stocks Hit All-Time High as Fed Holds Steady

AP (Sep. 17, 2014) — The Federal Reserve signaled Wednesday that it plans to keep a key interest rate at a record low because a broad range of U.S. economic measures remain subpar. Stocks hit an all-time high on the news. (Sept. 17) Video provided by AP
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:
from the past week

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