INTELLIGENT PACKAGING A packaging system that is capable of carrying out intelligent functions like Detecting Sensing Recording Tracing Communicating, and Applying scientific logic 5
To facilitate decision-making To extend shelf life Enhance safety Improve quality Provide information and Warn about possible problems 6
INTELLIGENT PACKAGING SYSTEMS 1.Indicators 2.Radio Frequency Identification Tags (RFID) 3.Sensors 7
INDICATORS Substances that indicate the presence or absence of another substance or the degree of reaction between two or more substances by means of a characteristic change, especially in colour 8
Time-temperature indicator Gives information on temperature Shows the variation and history in temperature Visualised as a colour movement or colour change. 9
Partial history indicators Full history indicators Use Foods stored under chilled and frozen conditions Types Reaction mechanisms Diffusion Polymerisation Enzyme reaction 10
CURRENT COMMERCIAL TTI PRODUCTS 11
Fresh-Check® Full history indicator Polymerisation 12
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3M MONITOR MARK Partial-history indicator Diffusion 14
Check point Full history indicator Two separate compartments 1.Enzyme solution,lipase plus a pH indicating dye compound 2.Substrate 15
pH change results in a color change 16
OnVuTM The heart of the OnVu label becomes paler as the ambient temperature accumulates This indicates gradual decay 17
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2.Oxygen indicator Gives information on leakage usage area - controlled or modified atmosphere food packaging Ageless-eye Vitalon Samso-Checker 20
Ageless-eye O 2 indicator tablet O 2 concentration in atmosphere ≤ 0.1 % → indicator is pink O 2 concentration in atmosphere ≥ 0.5 % → indicator is blue 21
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Professor Andrew Mills with food packaging incorporating the intelligent plastic indicator. The yellow part is the indicator and it has changed colour to show that the food it contains has spoiled. Professor Andrew Mills lights the way: a small blue colour -changing disc can be seen near the bacon 23
Photographs of oxygen indicator ink printed on a MAPed food package. Left: Before UV activation. Middle: After UV activation. Right: On opening the package. 24
Carbon dioxide indicator Gives information on concentration of carbon dioxide Usage area-controlled or modified atmosphere packaging 25
Pathogen indicator Gives information on microbiological status Meat ,fish or poultry packaging Reagents are various chemicals reacting with toxins 26
Freshness indicators Indicate the microbial quality of the product by reacting to the metabolites produced in the growth of microorganisms FreshTags ® Timestrip ® RipeSense ® SensorQTM 27
WORKING Colour indicating tags attached as a small adhesive label to the outside of packaging film can be used to monitor the freshness of perishable food products such as seafood. 28
Fresh Tag® Indicator sensitive to volatile nitrogen compounds. packaging of fish Colour change in response to the release of volatile amines 29
RipeSense ® - RipeSense ® indicates the ripening of fruits. -This sensor changes color when it reacts with aromatic compounds 30
SensorQTM Beef and poultry Sulfide gas, by microbial growth 31
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RADIO FREQUENCY IDENTIFICATION TAGS(RFID ) Advanced form of data information carrier that can identify and trace a product 33
Types Passive tags Active tags Common RFID frequencies range from low (125 kHz) to UHF (850–900 MHz) 34
Features Traceability Inventory management Labour saving costs Security and promotion of quality and safety Prevention of product recalls 35
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System of reading RFID tags 37
Sensors A sensor is defined as a device used to detect, locate or quantify energy or matter, giving a signal for the detection or measurement of a physical or chemical property to which the device responds 38
Intelligent sensors Two functional units: Receptor - transformes chemical or physical information into a form of energy Transducer - transforms this energy into a useful analytical signal 39
1.Formation of bacterial metabolite 2. Dissociation in aqueous phase 3. Result: Increase in conductivity and NH4+ content 40
Bio-Sensors Compact analytical devices that detect, transmit and record information pertaining to biological reactions 41
Components Bioreceptors - organic materials such as enzymes, antigens, microbes, hormones and nucleic acids Transducers -electrochemical, optical, calorimetric,etc ., and are system dependent 42
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Food Sentinel System™ Capable of continuous detection of contamination Immunological reactions occurring in part of a barcode The barcode is rendered unreadable by the presence of contaminating bacteria 44
ToxinGuard A visual diagnostic system that incorporates antibodies in a polyethylene-based plastic packaging capable of detecting Salmonella sp., Campylobacter sp.,E. coli and Listeria sp. 45
Gas Sensors Devices that respond quantitatively and reversibly to the presence of a gaseous analyte by changing the physical parameters of the sensor and are monitored by an external device 46
ADVANTAGES Provides the user with reliable and correct information on the conditions of the food, the environment and the packaging integrity Enables the detection of calamities and possible abuse through the entire supply chain, from farm to fork. Reducing food loss and waste 47
Prevent unnecessary transport and logistics from an early stage Enhancing food safety and biosecurity Enhancing food quality assurance 48
DISADVANTAGES Extra cost Possible migration issues of complex packaging materials into product Lack of recyclability of disposable packages Possible mistrust/confusion of technology 49
CASE STUDY 1 Title:- Chitosan biobased and intelligent films: Monitoring pH variations Cristiana,M.P et al 50
Chitosan Natural polymer Biodegradability Ability to retard the transport of moisture, gas, flavour and lipids Anthocyanins (ATH) Polyphenolic plant pigments Colour changes depending on the pH 51
Objective To obtain and characterize the fast pH-colourimetric indicator device, applying a simple manufacturing technique, using food grade and biodegradable materials 52
Materials Chitosan Anthocyanin from grapes Acetic acid sodium chloride and other salts 53
Method Film formation Dispersing chitosan (2.0 g/100 g) in aqueous acetic acid The suspensions were homogenized by magnetic stirring at room temperature for 60 min until complete dissolution. 1.0 g/100 g ATH was homogenized in filmogenic suspension Poured into Petri dishes 54
Colour response efficiency Water vapour transmission rate (WVTR) Soluble matter (SM) Moisture content (MC) Mechanical properties Scanning electron microscopy (SEM) Film thickness 55
Results and discussion Homogeneous, thin, flexible and dark violet films were obtained 56
Characterization of CF and C-ATH films The addition of ATH into chitosan matrix film reduced in 27% the WVTR 57
The water solubility and water vapour transmission rate of C-ATH were decreased to 60% and 48%, respectively, as compared to control film (CF, without indicator) 58
Mechanical properties 59
The E and TS did not alter significantly in C-ATH as compared to CF, but the flexibility was reduced 47% as a consequence of the lower moisture content . 60
Colour response efficiency 61
An intelligent and biobased indicator packaging material system was obtained mainly for food products that alter the pH value during the deteriorative process The C-ATH could offer an efficient alternative to trace down food packaging giving a safe and quality product package due to the pH variation information during the transport and storage 62
CONCLUSION Intelligent food packaging is an innovative technology which is developing in recent years Benefits in product quality and safety, shelf life and more efficient supply chain management have to outweigh production costs. 63
Further research is necessary to develop low-cost indicators and microsensors Food-specific mathematical models need to be developed for translating the measured information with the quality perception of the consumer 64
When these issues have been tackled, intelligent packaging offers an enormous potential for commercial applications to improve supply chain management and guarantees for product quality for consumers 65
REFERENCE Adriana,P.2013.Time temperature indicators as devices intelligent packaging . Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis.LXI, No. 1: 245–251. Andrew,M.2005. Oxygen indicators and intelligent inks for packaging food, The Royal Society of Chemistry. 34: 1003–1011. Cristiana, M.P.Y., Vinicius ,B.V.M., Mariana,E . D. M.,and Telma,T . F. 2014.Chitosan biobased and intelligent films: Monitoring pH variations. LWT - Food Science and technology. 55:83-89 66
Jenneke,K ., Matthijs,D ., Paul,V.,and Van,B.2013.Monitoring the Quality of Perishable Foods: Opportunities for Intelligent Packaging .Critical Reviews in Food Science and Nutrition. 54:645–654 . Kerry,J.P ., Grady,M.N.O.,and HoganPast,S.A.2006.Current and potential utilisation of active and intelligent packaging systems for meat and muscle-based products: A review. Meat Science. 74:113–130 . Kit,Y ., Paul,T.,Takhistov.,and Joseph,Miltz.2005. Intelligent packaging:concepts and applications. Journal of food science ,70(1 ). 67
Mike,V .,Peter.R.,Frank,D.,and Bruno,D.Intelligent food packaging: The next generation.2014. Trends in Food Science & Technology. 20:1-16. Pereira,D.A.Cruz .,and Paseiro,L.2012.Active and Intelligent Packaging for the Food Industry. Food Reviews International. 28(2): 146-187. Semih,O.and Buket,Y.2008 . Intelligent packaging. LogForum. 4:4. 68