Nano4AgriFood Sensors for food application
December 3, 9:45-11:15
Optical Sensors based on Photonic Nanomaterials for Food Packaging
Prof dr Albert Schenning
Laboratory of Stimuli-responsive Functional Materials and Devices
Eindhoven University of Technology, Eindhoven, The Netherlands
Quality losses for perishable items such as food, pharmaceuticals, and drugs, are generally temperature dependent since they are driven by biochemical processes such as bacterial growth. For these items, it is important that temperature is maintained within a controlled range throughout the cold chain. Currently, there are no satisfactory low-cost devices to track the temperature history of products in order to ensure their freshness. Today, expiration labels contain a static expiration date. The expiration date is predetermined, based on the ‘normal’ and expected handling and exposure to temperature. It is used as a guideline; the expiration date does not guarantee the safety of a food or drug, and a product is not necessarily dangerous or ineffective after the expiration date. The lack of predictive power of a static expiration label leads to two major issues, namely food-poisoning and food-waste.
In my lecture I will discuss our results on optical sensors based on photonic nanomaterials that can potentially monitor the temperature history of products throughout the entire cold-chain, from production to the end-consumer. These battery free sensors are cheap to manufacture to allow per-item tracking and have an optical read-out that can be detected by the naked eye.
Albert Schenning studied chemistry at Radboud University Nijmegen, where he obtained his master’s degree in 1992 and his doctorate in 1996. His PhD thesis on supramolecular architectures based on porphyrin and receptor molecules was supervised by Dr. Martin Feiters and Prof. Roeland Nolte. Between June and December 1996, Schenning was a post-doctoral fellow in the group of Prof. Bert Meijer at Eindhoven University of Technology (TU/e), working on dendrimers. In 1997, he investigated pi-conjugated oligomers based on triacetylenes with Prof. François Diederich at the ETH in Zurich. From 1998 until 2003, Schenning was a fellow of the Royal Netherlands Academy of Arts and Sciences (KNAW) at the TU/e, active in the field of supramolecular organization of pi-conjugated systems. In 2003 he was appointed assistant professor and in 2014 full professor of Stimuli-responsive Functional Materials and Devices at TU/e.