There is currently no good method to check whether the packaging has the correct gas content. However, researchers in Atomic Physics and Packaging Logistics have developed a new laser instrument which could solve the problem. The first product is expected to be ready for market launch later in the autumn.
“It will be the first non-destructive method. This means that measurements can be taken in closed packaging and the gas composition over time can be checked. This will make it possible to check a much higher number of products than at present”, says Märta Lewander, Doctor of Atomic Physics at Lund University in Sweden.
Dr Lewander developed the technique in her thesis and now works as chief technical officer for the company Gasporox, which is commercialising the technology.
Today, spot checks are performed on individual samples, with the risk that damaged products could slip through.
“We hope that, in the long term, this type of equipment could also help to stop people throwing so much food away, because they would know that it is packaged as it should be”, she says.
The product that will be launched in the autumn could be used to check and improve how airtight packaging is. Gasporox estimates that within two years the method could also be used as a means of quality control in production when products are packaged. In the future, shops could also use it to check the shelf life of their goods.
No plastic packaging is 100% airtight. How easily oxygen can enter depends on both the material and how well sealed the packaging is.
“It has been shown that part-baked bread, for example, doesn’t always meet the mark”, says Annika Olsson, Professor of Packaging Logistics at Lund University.
The technology can measure through almost all packaging materials.
“As long as light can pass through then we can measure. Almost all materials allow at least some light to pass. Even packaging that contains aluminium foil, for example some fruit juice cartons, often has some part that is not covered by the foil”, says Märta Lewander.
At Lund University, research in the field is continuing. Patrik Lundin, a doctoral student in Atomic Physics, is now focusing on measuring carbon dioxide in packaging.
“It is important to measure both oxygen and carbon dioxide. Oxygen is most important, but there is also interest in carbon dioxide from the industry”, says Märta Lewander.
The development work has been financed by several research grants from bodies including Vinnova and by private entrepreneurs and investors. The product that is being developed by Gasporox is manufactured by a part-owner of the company, the Norwegian company Norsk Elektro Optikk.
How the technology works:
The protective atmosphere that surrounds the food product in the packaging usually comprises carbon dioxide or nitrogen and contains little or no oxygen. Oxygen leads to oxidisation, bacteria growth and decay. By shining a laser beam into the packaging and studying the light that comes back, it is possible to see if the composition of the gas is correct. The laser beam measures the amount of oxygen.
The laser is connected to a handheld unit which is held against the sample. A handheld detector measures the light that comes out of the packaging and sends a signal to a computer.
The technology is based on a technique for measuring the gas composition of samples containing cavities. An early application was to diagnose sinusitis, by enabling doctors at a primary health centre to find out whether the sinuses were full of gas as they should be. Clinical studies have confirmed that the technique works, and this application is expected to be on the market within a year or two.Background:
For more information, see www.gasporox.com or contact CTO Märta Lewander, +46 702 951113, firstname.lastname@example.org, or CEO Maria Göth email@example.com, +46 702 954596.
High resolution photographs of Märta Lewander, Patrik Lundin and Annika Olsson are available in the Lund University image bank, http://bildweb.srv.lu.se/.
Megan Grindlay | idw
Researchers uncover protein-based “cancer signature”
05.12.2016 | Universität Basel
The Nagoya Protocol Creates Disadvantages for Many Countries when Applied to Microorganisms
05.12.2016 | Leibniz-Institut DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
05.12.2016 | Power and Electrical Engineering
05.12.2016 | Information Technology
05.12.2016 | Earth Sciences