Intelligente verpakking:nieuwe mogelijkheden via optische sensoren?
Dr. ir. An Vermeulen
Dr. ir. Danaë Delbeke
Prof. dr. ir. Peter Ragaert
Universiteit Gent
8 november 2012
Leuven
© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
What is Pack4Food?
INDUSTRY
65 members
RESEARCH INSTITUTES/
NETWORK ORGANISATIONS
Food products-composition
-pH-aw
Filling System-standard
-clean-ultraclean
-Hot fill-Aseptic
-In packaging-MAP
Shelf-life-chemical-microbiological-physical
SustainabilityNetworking
Packaging material-barrier
-active-passive
-closure systems
Filling systems
Resins
Packagingmaterials
Gasses
Food products
Distribution
Advices
Training
Research
© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Trends in food packaging
CONSUMENT
Sustainability
Conscious and demanding
Convenience
Healthy
and tasty
BioplasticsRecycling
MAPO2-absorbers
Antimicrobial
systems
Intelligent
packaging
Transparancy
Heat resistanceBarrier
packaging
Migration
© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Intelligent packaging(Def. EU 1935/2004 and EU 450/2009)
• Intelligent materials and articles:– They monitor the condition of the packaged food or the
environment surrounding the food– No changes in characteristics of food productse.g. Time-Temperature Indicators (TTI)
≠ active packaging:– Intended to extend the shelf-life of packaged food
Or– To maintain or improve the condition of packaged foode.g. Oxygen absorbers© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Types of intelligent packaging
In general: two types
1. Measuring the condition of the package onthe outside
2. Measuring directly the quality of the foodproduct inside the packaging
© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Extension of functionality of food packaging
• Containment
– Related with mechanical properties
• Protection
– Against external factors
• Convenience
– “easy-to-use”
• Marketing
– Providing information
Leak detection systems
Added value by intelligent materials
Leak detection systemsQuality indicatorsTime/Temperature indicators
Thermochromic inksRFID
LED in food packagingHolographic Images© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Link with functionality of food packaging
• Containment
– Related with mechanical properties
• Protection
– Against external factors
• Convenience
– “easy-to-use”
• Marketing
– Providing information
Leak detection systems
Added value by intelligent materials
Leak detection systemsQuality indicatorsTime/Temperature indicators
Thermochromic inksRFID
LED in food packagingHolographic Images© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Quality indicators
• Colour change depending on changes in quality of the food product– Flavour components, ethylene,…
– Microbiological metabolites,…
• Not much commercial applications
• Lots of research/patents
• Focus on:– Following up ripening processes (e.g. fruits)
– Following up amine-production (e.g. fish)
© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Quality indicators
• Ripesense ®
© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Quality indicators
• SensorQ™ (Food Quality Sensor International / DSM)– pH-sensing technology (based on anthocyanines)
– Detects freshness/spoilage level of packed meat and poultry by reacting with biogenic amines from microbiological origin
– Label
– Orange-colored center in ‘Q’ turns dark
green if meat is spoiled
Photo: PackWorld.com© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Quality indicators
Quality indicators for a group of spoilage indicating components?© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Leak detection systems
• O2-indicators
– Ageless Eye®
© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Leak detection systems
• Actually measuring the O2-concentration: exampleOxysense
Photo: Oxysense
On-line detection system for CO2?© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Project proposal
Integrated optical sensors in food packaging
© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Project proposal
Adsorption and detection of volatile compounds in
packages of food products
Adsorption and detection of CO2 in packages of food
products
MAP-packages of food products (e.g. meat, fish, vegetables,…)
Integration optical sensors with specific coating for…
Fast, accurate and non-destructive analysis of quality packaged foodproducts ánd of integrity packaging concept (leak detection)© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Project proposal
Optical sensors for integration in food packaging• Extremely cheap optical sensor
• With multiplexed sensing capabilities (specificity!!)
• To be read out contactless by laser/LED beam
© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
1573 1575 1577
Inte
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teit
[A
.U.]
Golflengte [nm]
Wavelength shift
0
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0 5 10 15 20 25avidin concentration [μg/ml]
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Concentration measurement
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Concentration
1575.1
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reference level
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adsorption
Time trace
1573 1575 1577
Inte
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[A
.U.]
Wavelength [nm]
10 m
X100’s on a single chip!!
Project proposal
Adsorption gas sensor
© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Project proposal: why silicon photonics optical sensor?
• Cheap (CMOS-technology): order eurocent
• Extremely small: mm2
• Non-contact: read-out through package foil
• Signal of sensor not visible for consumer
• Sensitive and (!) specific
– Sensitive: optical resonant phenomena
– Specific: dense integration of dozens of resonators
© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Project proposal
• Project proposal to be submitted to IWT in the framework of SBO– “Strategisch Basis Onderzoek”
– Deadline: 7th of January 2013
• Participation companies to users group– Follow up developments project in first line
– Possibility to steer the project
• Based on obtained results, valorisationprojects will be submitted© 2012 – Pack4Food
Intelligente verpakking: optische sensoren © 2012 – An Vermeulen – Danaë Delbeke –8 november 2012 Peter Ragaert
Project proposal
• More information?
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© 2012 – Pack4Food
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© 2012 – Pack4Food