Science Current Events | Science News | Brightsurf.com
 

The Electronic Nose Knows When Your Cantaloupe is Ripe

March 30, 2012
Have you ever been disappointed by a cantaloupe from the grocery store? Too ripe? Not ripe enough? Luckily for you, researchers from the University of California, Davis might have found a way to make imperfectly ripe fruit a thing of the past. The method will be published on March 30 in the Journal of Visualized Experiments (JoVE).

"We are involved in a project geared towards developing rapid methods to evaluate ripeness and flavour of fruits," said paper-author Dr. Florence Negre-Zkharov. "We evaluated an electronic nose to see if it can differentiate maturity of fruit, specifically melons. The goal is to develop a tool that can be used post-harvest to better evaluate produce, and develop better breeds."

When fruit ripens, it develops a characteristic volatile blend, indicating its maturity. Traditionally, the gold-standard of evaluating these volatiles has been gas chromatography, but it takes up to an hour to analyze a single sample, which makes it impractical to use outside the lab. Dr. Negre-Zakharov and her team wanted to determine if the much cruder- but much faster- electronic nose was able to determine if the melon they used in the experiment were ripe. It was.

"It's quite encouraging technology for the purposes of determining maturity," she said.

The project is part of the Specialty Crops Research Initiative, funded by the United States Department of Agriculture, which was "established to solve critical industry issues through research and extension activities." Dr. Negre-Zkharov and her team are working on quantitative methods of evaluating fruit-ripeness in the hopes that it will help the industry produce better quality produce.

"It's very impressive that the electronic nose system can do a type of gas chromatography in about a minute. Ultra-fast, indeed. Also, the sample preparation is as easy as making a smoothie at home. Such a user-friendly system could greatly help analysis efficiency in this field," said JoVE Science Editor, Dr. Zhao Chen. "Given the popularity of JoVE video-articles, I expect many researchers will know and adopt this method in their own research."

Since the very nature of the project is to give people useful tools, the researchers decided to publish in JoVE, the only peer reviewed, PubMed-indexed science journal to publish all of its content in both text and video format.

"We thought that the best way to get people to adopt the method was showing a video, instead of publishing a text," said Dr. Negre-Zkharov.

The next step is to take the electronic nose out into the field to determine if it can still determine fruit maturity with all of the background smells interfering- like soil and air-quality. Though the team has already tested the device in the field, they have not yet analyzed their results.

To watch the full video article, please click here: http://www.jove.com/video/3821/fruit-volatile-analysis-using-an-electronic-nose
About The Journal of Visualized Experiments:

The Journal of Visualized Experiments (JoVE) is the first and only Pubmed and Medline indexed academic journal devoted to publishing research in the biological sciences in video format. Using an international network of videographers, JoVE films and edits videos of researchers performing new experimental techniques at top universities, allowing students and scientists to learn them much more quickly. As of January 2012 JoVE has released 59 monthly issues including over 1500 video-protocols on experimental approaches in developmental biology, neuroscience, microbiology and other fields.

Journal of Visualized Experiments (JoVE)


Related Electronic Nose Current Events and Electronic Nose News Articles


Electronic nose sniffs out prostate cancer using urine samples
We may soon be able to make easy and early diagnoses of prostate cancer by smell. Investigators in Finland have established that a novel noninvasive technique can detect prostate cancer using an electronic nose.

How the science of deer hunting can help patients with diabetes
Body odor is a deer hunter's worst enemy, an alert to animals that an ominous presence is lurking, but the science behind suppressing it to give hunters an edge oddly enough could help researchers develop a life-saving device for diabetes patients.

Breath tests could be used to diagnose lung cancer
Collecting samples of exhaled breath from people at a high risk of lung cancer could be a cheap and non-invasive method of diagnosing the disease, according to new research.

Severe asthma patients less responsive to treatment
People with severe asthma, who are often described as 'steroid-dependent', are actually less likely to respond to the treatment they depend on, when compared to people with mild asthma.

Firefighting Robot Paints 3D Thermal Imaging Picture for Rescuers
Engineers in the Coordinated Robotics Lab at the University of California, San Diego, have developed new image processing techniques for rapid exploration and characterization of structural fires by small Segway-like robotic vehicles.

An electronic nose can tell pears and apples apart
Swedish and Spanish engineers have created a system of sensors that detects fruit odours more effectively than the human sense of smell. For now, the device can distinguish between the odorous compounds emitted by pears and apples.

Sniffing out the side effects of radiotherapy may soon be possible
Sniffing out the side effects of radiotherapy may soon be possible Researchers at the University of Warwick and The Royal Marsden NHS Foundation Trust have completed a study that may lead to clinicians being able to more accurately predict which patients will suffer from the side effects of radiotherapy.

'Magnetic tongue' ready to help produce tastier processed foods
The "electronic nose," which detects odors, has a companion among emerging futuristic "e-sensing" devices intended to replace abilities that once were strictly human-and-animal-only.

An advance toward an 'electronic nose' urine test for TB
Scientists are reporting an advance toward a fast, inexpensive urine test to detect and monitor the effectiveness of treatment for tuberculosis (TB), which is on a rampage in the developing world. Their study appears in the ACS' journal Analytical Chemistry.

Electronic nose detects cancer
György Horvath from the University of Gothenburg, Sweden, and researchers from the University of Gävle and KTH Royal Institute of Technology have been able to confirm in tests that ovarian cancer tissue and healthy tissue smell different.
More Electronic Nose Current Events and Electronic Nose News Articles

Electronic Nose: Introduction,Sensor and Application: Fundamental of Electronic Olfaction System

Electronic Nose: Introduction,Sensor and Application: Fundamental of Electronic Olfaction System
by Himanshu Patel (Author)


The sense of smell is one of our fundamental senses. Detection of smell plays vital role in wide range of industrial and domestic applications. Olfaction is a challenging new sensing modality for intelligent systems. With the emergence of electronic noses (e-noses) it is now possible to train a system to detect and recognize a range of different odours. An electronic nose (e-nose) is an intelligent sensing device that uses an array of gas sensors of partial and overlapping selectivity along with a pattern recognition component to distinguish between both simple and complex odours. To date, e- noses have had a variety of use in a number of applications from the food industry to medical diagnosis. In this book, I have integrated the electronic nose working principle, sensors ...

Electronic Noses: Principles and Applications

Electronic Noses: Principles and Applications
by Julian W. Gardner (Author), Philip N. Bartlett (Author)


Starting from the basic principles, this book surveys recent work on electronic noses and presents numerous practical applications. It stresses developments since the first meeting on electronic noses in 1991 and includes a comprehensive appendix, making it an invaluable resource for anyone researching electronic noses or machine olfaction.

Electronic Noses & Sensors for the Detection of Explosives (Nato Science Series II: (closed))

Electronic Noses & Sensors for the Detection of Explosives (Nato Science Series II: (closed))
by J. Gardner (Editor), Jehuda Yinon (Editor)


This book examines both the potential application of electronic nose technology, and the current state of development of chemical sensors for the detection of vapours from explosives, such as those used in landmines. The two fields have developed, somewhat in parallel, over the past decade and so one of the purposes of this workshop, on which the book is based, was to bring together scientists from the two fields in order to challenge the two communities and, mutually, stimulate both fields. It begins with a review of the basic principles of an electronic nose and explores possible ways in which the detection limit of conventional electronic nose technology can be reduced to the level required for the trace levels observed for many explosive materials. Next are reviews of the use of...

The Electronic Nose: Artificial Olfaction Technology (Biological and Medical Physics, Biomedical Engineering)

The Electronic Nose: Artificial Olfaction Technology (Biological and Medical Physics, Biomedical Engineering)
by Himanshu K. Patel (Author)


This book provides the basics of odor, odor analysis techniques, sensors used in odor analysis and overview of odor measurement techniques. For beginners as well researchers this book is a brief guide for odor measurement and analysis. The book includes a special chapter dedicated to practical implementation of e-nose sensor devices with software utility, which guides students to prepare projects and work in practical analysis. It also includes material from early to latest technology research available in the market of e-nose era. Students and researchers who want to learn the basics of biomedical engineering and sensor measurement technology will find this book useful.

Handbook of Biosensors and Electronic Noses: Medicine, Food, and the Environment

Handbook of Biosensors and Electronic Noses: Medicine, Food, and the Environment
by Erika Kress-Rogers (Author)


In developing the electronic nose and biosensor devices, researchers not only copy biochemical pathways, but also use nature's approach to signal interpretation as a blueprint for man-made sensing systems. Commercial biosensors have demonstrated their benefits and practical applications, providing high sensitivity and selectivity, combined with a significant reduction in sample preparation assay time and the use of expensive reagents. The Handbook of Biosensors and Electronic Noses discusses design and optimization for the multitude of practical uses of these devices including:

  Electronic nose discriminates between volatiles of refined, whole wheat bread.: An article from: Emerging Food R&D Report
by Harry D. Sapirstein (Author)




The Nose (The masterpiece to enjoy by comics. Book 1)

The Nose (The masterpiece to enjoy by comics. Book 1)
by NTC Electronic Book Publishing Section


You can read the masterpieces by manga are worth reading .
Try them so you would be impressed by them !!

We faithfully replicated Akutagawa's works by manga.

About 20 centimeters length has the nose of a certain famous priest and I go down from the top of the upper lip to the bottom of the chin. The form seems to be slim sausage, I withdraw from the middle of the face. He still looks very going at the surface and finishes it. I suffered from disease of this nose in pain all the time in the heart. He felt uneasy about that a word to call a nose came out in an everyday statement above all.

Electronic Nose for Robots: Electronic Nose for Alcohol Detection

Electronic Nose for Robots: Electronic Nose for Alcohol Detection
by Azhar M. Ibrahim (Author), Rini Akmeliawati (Author), Muhamad Aslam (Author)


Electronic nose systems are developing in efficiencyand accuracy with the use of variety gas sensors andalso different types of pattern recognition method.This work presents the study of using an artificialolfactory system as a nondestructive instrument todetect and measure concentration of alcohol. Besidesthat, this work also describe how our electronicnose device can be used to detect alcohol in thedrinks, food and so on while at the same time displaythe concentration of alcohol. The hand held unitconsists of an alcohol sensor (TGS 2620), a microcontroller to calculate the concentration of alcoholand control the output and display using LCD.Moreover, the tasks performed at processing data areoutlined and how the concentration of alcohol will becalculated and displayed is presented. The...

  Electronic nose can detect light-oxidized off-flavors in reduced-fat milk.: An article from: Emerging Food R&D Report
by Food Technology Intelligence, Inc. (Publisher)


This digital document is an article from Emerging Food R&D Report, published by Food Technology Intelligence, Inc. on October 1, 2004. The length of the article is 2784 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: Electronic nose can detect light-oxidized off-flavors in reduced-fat milk.
Publication: Emerging Food R&D Report (Newsletter)
Date: October 1, 2004
Publisher: Food Technology Intelligence, Inc.
Volume: 15 Issue: 7 Page: NA

Distributed by Thomson...

  Electronic nose technology evaluates fruit quality.: An article from: Emerging Food R&D Report
by Food Technology Intelligence, Inc. (Publisher)


This digital document is an article from Emerging Food R&D Report, published by Food Technology Intelligence, Inc. on May 1, 2003. The length of the article is 466 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: Electronic nose technology evaluates fruit quality.
Publication: Emerging Food R&D Report (Newsletter)
Date: May 1, 2003
Publisher: Food Technology Intelligence, Inc.
Volume: 14 Issue: 2 Page: NA

Distributed by Thomson...

© 2014 BrightSurf.com