{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,19]],"date-time":"2026-05-19T09:07:29Z","timestamp":1779181649300,"version":"3.51.4"},"reference-count":98,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2021,2,22]],"date-time":"2021-02-22T00:00:00Z","timestamp":1613952000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000038","name":"Natural Sciences and Engineering Research Council of Canada","doi-asserted-by":"publisher","award":["NSERC"],"award-info":[{"award-number":["NSERC"]}],"id":[{"id":"10.13039\/501100000038","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000038","name":"Natural Sciences and Engineering Research Council of Canada","doi-asserted-by":"publisher","award":["508526-7"],"award-info":[{"award-number":["508526-7"]}],"id":[{"id":"10.13039\/501100000038","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Smart packaging of fresh produce is an emerging technology toward reduction of waste and preservation of consumer health and safety. Smart packaging systems also help to prolong the shelf life of perishable foods during transport and mass storage, which are difficult to regulate otherwise. The use of these ever-progressing technologies in the packaging of fruits has the potential to result in many positive consequences, including improved fruit quality, reduced waste, and associated improved public health. In this review, we examine the role of smart packaging in fruit packaging, current-state-of-the-art, challenges, and prospects. First, we discuss the motivation behind fruit quality monitoring and maintenance, followed by the background on the development process of fruits, factors used in determining fruit quality, and the classification of smart packaging technologies. Then, we discuss conventional freshness sensors for packaged fruits including direct and indirect freshness indicators. After that, we provide examples of possible smart packaging systems and sensors that can be used in monitoring fruits quality, followed by several strategies to mitigate premature fruit decay, and active packaging technologies. Finally, we discuss the prospects of smart packaging application for fruit quality monitoring along with the associated challenges and prospects.<\/jats:p>","DOI":"10.3390\/s21041509","type":"journal-article","created":{"date-parts":[[2021,2,22]],"date-time":"2021-02-22T20:42:51Z","timestamp":1614026571000},"page":"1509","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":179,"title":["Fruit Quality Monitoring with Smart Packaging"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5679-0959","authenticated-orcid":false,"given":"Arif U.","family":"Alam","sequence":"first","affiliation":[{"name":"Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4L8, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pranali","family":"Rathi","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4L8, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7598-3898","authenticated-orcid":false,"given":"Heba","family":"Beshai","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4L8, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gursimran K.","family":"Sarabha","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4L8, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6390-0933","authenticated-orcid":false,"given":"M. Jamal","family":"Deen","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4L8, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,2,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Ishangulyyev, R., Kim, S., and Lee, S. (2019). Understanding Food Loss and Waste\u2014Why Are We Losing and Wasting Food?. Foods, 8.","DOI":"10.3390\/foods8080297"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Nicoletti, M., and Serrone, P. (2017). Del Intelligent and Smart Packaging. Future Foods, InTech.","DOI":"10.5772\/intechopen.68773"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1016\/j.jclepro.2019.02.258","article-title":"Food waste: Challenges and opportunities for enhancing the emerging bio-economy","volume":"221","author":"Morone","year":"2019","journal-title":"J. Clean. Prod."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"3947","DOI":"10.1007\/s13197-014-1588-z","article-title":"Intelligent packaging in meat industry: An overview of existing solutions","volume":"52","author":"Mohebi","year":"2015","journal-title":"J. Food Sci. Technol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"506","DOI":"10.3945\/an.112.002154","article-title":"Health Benefits of Fruits and Vegetables","volume":"3","author":"Slavin","year":"2012","journal-title":"Adv. Nutr."},{"key":"ref_6","unstructured":"(2020, December 06). Top 3 Consumer Demands Driving Produce Packaging Trends. Available online: https:\/\/crawfordpackaging.com\/product-packaging\/top-three-consumer-demands-driving-produce-packaging-trends."},{"key":"ref_7","unstructured":"The Maryland\u2013National Capital Park and Planning Commission (2020, December 06). Reduce, Recover, Recycle\u2014Food Waste in Prince George\u2019s County, MD, Available online: http:\/\/mncppcapps.org\/planning\/publications\/PDFs\/371\/FoodWaste2019.pdf."},{"key":"ref_8","unstructured":"(2020, December 06). Food Safety Education, Available online: https:\/\/www.fsis.usda.gov\/wps\/portal\/fsis\/topics\/food-safety-education."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Kuswandi, B. (2017). Freshness Sensors for Food Packaging. Reference Module in Food Science, Elsevier.","DOI":"10.1016\/B978-0-08-100596-5.21876-3"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"412","DOI":"10.1021\/acssensors.9b02095","article-title":"Fully Integrated, Simple, and Low-Cost Electrochemical Sensor Array for in Situ Water Quality Monitoring","volume":"5","author":"Alam","year":"2020","journal-title":"ACS Sens."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"126632","DOI":"10.1016\/j.snb.2019.126632","article-title":"Electrochemical sensing of lead in drinking water using \u03b2-cyclodextrin-modified MWCNTs","volume":"296","author":"Alam","year":"2019","journal-title":"Sens. Actuators B Chem."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"781","DOI":"10.1016\/j.snb.2017.07.188","article-title":"Integrated water quality monitoring system with pH, free chlorine, and temperature sensors","volume":"255","author":"Qin","year":"2018","journal-title":"Sens. Actuators B Chem."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"896","DOI":"10.1016\/j.snb.2017.07.127","article-title":"Electrochemical sensing of acetaminophen using multi-walled carbon nanotube and \u03b2-cyclodextrin","volume":"254","author":"Alam","year":"2018","journal-title":"Sens. Actuators B Chem."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"293","DOI":"10.1016\/S0925-5214(98)00092-1","article-title":"Effect of O2 and CO2 partial pressure on selected phenomena affecting fruit and vegetable quality","volume":"15","author":"Beaudry","year":"1999","journal-title":"Postharvest Biol. Technol."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1007\/BF02042236","article-title":"Effect of low oxygen and high carbon dioxide on the levels of ethylene and 1-aminocyclopropane-1-carboxylic acid in ripening apple fruits","volume":"2","author":"Li","year":"1983","journal-title":"J. Plant Growth Regul."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"336","DOI":"10.21273\/HORTSCI.27.4.336","article-title":"Controlling Relative Humidity in Modified Atmosphere Packages of Tomato Fruit","volume":"27","author":"Shirazi","year":"1992","journal-title":"HortScience"},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Mehyar, G.F., and Han, J.H. (2011). Active Packaging for Fresh-Cut Fruits and Vegetables. Modified Atmosphere Packaging for Fresh-Cut Fruits and Vegetables, John Wiley & Sons, Inc.","DOI":"10.1002\/9780470959145.ch14"},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Alam, A.U., and Deen, M.J. (2020). Bisphenol A Electrochemical Sensor Using Graphene Oxide and \u03b2-Cyclodextrin-Functionalized Multi-Walled Carbon Nanotubes. Anal. Chem.","DOI":"10.1021\/acs.analchem.0c00402"},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Li, K. (2012). Physiology and Classification of Fruits. Handbook of Fruits and Fruit Processing, Wiley-Blackwell.","DOI":"10.1002\/9781118352533.ch1"},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Vendrell, M., Dom\u00ednguez-Puigjaner, E., and Llop-Tous, I. (2001). Climacteric Versus Non-Climacteric Physiology. Acta Hortic., 345\u2013349.","DOI":"10.17660\/ActaHortic.2001.553.84"},{"key":"ref_21","first-page":"115","article-title":"Postharvest Technology of Fruits and Vegetables","volume":"Volume 2","author":"Singh","year":"2007","journal-title":"Fruit and Vegetables"},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Prasad, K., Jacob, S., and Siddiqui, M.W. (2018). Fruit Maturity, Harvesting, and Quality Standards. Preharvest Modulation of Postharvest Fruit and Vegetable Quality, Elsevier.","DOI":"10.1016\/B978-0-12-809807-3.00002-0"},{"key":"ref_23","unstructured":"(2020, December 06). Handling of Fresh Fruits, Vegetables and Root Crops\u2014A Training Manual for Grenada. Available online: http:\/\/www.fao.org\/3\/a-au186e.pdf."},{"key":"ref_24","unstructured":"Watson, J.A., Treadwell, D., Sargent, S.A., Brecht, J.K., and Pelletier, W. (2020, December 06). Postharvest Storage, Packaging and Handling of Specialty Crops: A Guide for Florida Small Farm Producers, Document HS1270. Available online: https:\/\/edis.ifas.ufl.edu\/hs1270."},{"key":"ref_25","unstructured":"Kader, A.A. (2020, December 06). The Role of Post-Harvest Management in Assuring the Quality and Safety of Horticultural Produce. Available online: http:\/\/www.fao.org\/3\/y5431e\/y5431e00.htm."},{"key":"ref_26","unstructured":"(2020, December 06). \u00b12% Accurate Humidity Sensing Reference Design Supporting Robust 2 m Wire Communication. Available online: https:\/\/www.ti.com\/tool\/TIDA-00972."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Mahajan, P.V., Caleb, O.J., Singh, Z., Watkins, C.B., and Geyer, M. (2014). Postharvest treatments of fresh produce. Philos. Trans. R. Soc. A Math. Phys. Eng. Sci., 372.","DOI":"10.1098\/rsta.2013.0309"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1007\/s11694-011-9120-x","article-title":"Smart packaging: Sensors for monitoring of food quality and safety","volume":"5","author":"Kuswandi","year":"2011","journal-title":"Sens. Instrum. Food Qual. Saf."},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"El-Ramady, H.R., Domokos-Szabolcsy, \u00c9., Abdalla, N.A., Taha, H.S., and F\u00e1ri, M. (2015). Postharvest Management of Fruits and Vegetables Storage. Sustainable Agriculture Reviews Vol. 15, Springer.","DOI":"10.1007\/978-3-319-09132-7_2"},{"key":"ref_30","unstructured":"Brodwin, E. (2020, December 06). Fresh Fruits and Vegetables Are a Scam if You Don\u2019t Consider One Thing. Available online: https:\/\/www.businessinsider.in\/fresh-fruits-and-vegetables-are-a-scam-if-you-dont-consider-one-thing\/articleshow\/58245793.cms."},{"key":"ref_31","unstructured":"(2020, December 06). What Is \u201cFreezer Burn?\u201d, Available online: https:\/\/www.loc.gov\/everyday-mysteries\/item\/what-is-freezer-burn."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"930","DOI":"10.1002\/jsfa.2825","article-title":"Nutritional comparison of fresh, frozen and canned fruits and vegetables. Part 1. Vitamins C and B and phenolic compounds","volume":"87","author":"Rickman","year":"2007","journal-title":"J. Sci. Food Agric."},{"key":"ref_33","unstructured":"(2020, December 06). Fresh Fruits & Vegetables Market Business Analysis by Latest Trends 2020. Global Industry Growth Factors, CAGR Status, Leading Key Players Update, Regional Economy, Development Plans and Forecast to 2025. Available online: https:\/\/www.marketwatch.com\/press-release\/fresh-fruits-vegetables-market-business-analysis-by-latest-trends-2020-global-industry-growth-factors-cagr-status-leading-key-players-update-regional-economy-development-plans-and-forecast-to-2025-2020-11-10."},{"key":"ref_34","unstructured":"(2020, December 06). Storage Temperatures and Procedures. Available online: https:\/\/opentextbc.ca\/foodsafety\/chapter\/storage-temperatures-and-procedures\/."},{"key":"ref_35","doi-asserted-by":"crossref","unstructured":"Fuertes, G., Soto, I., Carrasco, R., Vargas, M., Sabattin, J., and Lagos, C. (2016). Intelligent Packaging Systems: Sensors and Nanosensors to Monitor Food Quality and Safety. J. Sens., 2016.","DOI":"10.1155\/2016\/4046061"},{"key":"ref_36","unstructured":"(2020, December 06). Welcome to the Future: Smart Packaging\u2014PreScouter\u2014Custom Intelligence from a Global Network of Experts. Available online: https:\/\/www.prescouter.com\/2017\/03\/smart-packaging\/."},{"key":"ref_37","doi-asserted-by":"crossref","unstructured":"Beshai, H., Sarabha, G.K., Rathi, P., Alam, A.U., and Jamal Deen, M. (2020). Freshness monitoring of packaged vegetables. Appl. Sci., 10.","DOI":"10.3390\/app10217937"},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"149","DOI":"10.1016\/j.foodchem.2018.02.110","article-title":"Non-destructive monitoring of apple ripeness using an aldehyde sensitive colorimetric sensor","volume":"267","author":"Kim","year":"2018","journal-title":"Food Chem."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1016\/j.talanta.2007.03.014","article-title":"Development of a novel colorimetric indicator pad for detecting aldehydes","volume":"73","author":"Vo","year":"2007","journal-title":"Talanta"},{"key":"ref_40","doi-asserted-by":"crossref","unstructured":"Mustafa, F., and Andreescu, S. (2018). Chemical and biological sensors for food-quality monitoring and smart packaging. Foods, 7.","DOI":"10.3390\/foods7100168"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"201","DOI":"10.1016\/j.proeng.2016.11.217","article-title":"Detection of Gaseous Ethanol by the Use of Ambient Temperature Platinum Catalyst","volume":"168","author":"Boerman","year":"2016","journal-title":"Procedia Eng."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"8684","DOI":"10.1021\/jf300728h","article-title":"Hydrogen Sulfide Prolongs Postharvest Shelf Life of Strawberry and Plays an Antioxidative Role in Fruits","volume":"60","author":"Hu","year":"2012","journal-title":"J. Agric. Food Chem."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"562","DOI":"10.1016\/j.jfoodeng.2007.04.009","article-title":"10\u20131800-MHz dielectric properties of fresh apples during storage","volume":"83","author":"Guo","year":"2007","journal-title":"J. Food Eng."},{"key":"ref_44","doi-asserted-by":"crossref","unstructured":"Park, H.J., Yoon, J.H., Lee, K.G., and Choi, B.G. (2019). Potentiometric performance of flexible pH sensor based on polyaniline nanofiber arrays. Nano Converg., 6.","DOI":"10.1186\/s40580-019-0179-0"},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"145","DOI":"10.1007\/s13197-017-2873-4","article-title":"Effect of carbon dioxide (CO2) and oxygen (O2) levels on quality of \u2018Palmer\u2019 mangoes under controlled atmosphere storage","volume":"55","author":"Santos","year":"2018","journal-title":"J. Food Sci. Technol."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"4046","DOI":"10.1021\/ja910366p","article-title":"A Simple and Highly Sensitive Colorimetric Detection Method for Gaseous Formaldehyde","volume":"132","author":"Feng","year":"2010","journal-title":"J. Am. Chem. Soc."},{"key":"ref_47","unstructured":"(2020, December 06). RipeSense. Available online: https:\/\/product.statnano.com\/product\/6730\/ripesense."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"44","DOI":"10.1016\/j.compag.2006.07.002","article-title":"Evaluation of tomato maturity by electronic nose","volume":"54","author":"Hu","year":"2006","journal-title":"Comput. Electron. Agric."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1007\/s11694-013-9136-5","article-title":"Real time on-package freshness indicator for guavas packaging","volume":"7","author":"Kuswandi","year":"2013","journal-title":"J. Food Meas. Charact."},{"key":"ref_50","first-page":"147","article-title":"Simple and Low-cost freshness indicator for strawberries packaging","volume":"61","author":"Kuswandi","year":"2013","journal-title":"Acta Manila Ser. A"},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1108\/SR-07-2015-0115","article-title":"Food quality and safety monitoring using gas sensor array in intelligent packaging","volume":"36","author":"Matindoust","year":"2016","journal-title":"Sens. Rev."},{"key":"ref_52","doi-asserted-by":"crossref","unstructured":"Opara, U.L., Caleb, O.J., and Belay, Z.A. (2019). Modified atmosphere packaging for food preservation. Food Quality and Shelf Life, Elsevier.","DOI":"10.1016\/B978-0-12-817190-5.00007-0"},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"60","DOI":"10.1590\/S0101-20612013005000023","article-title":"Estimate of respiration rate and physicochemical changes of fresh-cut apples stored under different temperatures","volume":"33","author":"Fagundes","year":"2013","journal-title":"Food Sci. Technol."},{"key":"ref_54","doi-asserted-by":"crossref","unstructured":"Beaudry, R. (2007). MAP as a basis for active packaging. Intelligent and Active Packaging for Fruits and Vegetables, CRC Press.","DOI":"10.1201\/9781420008678.ch3"},{"key":"ref_55","unstructured":"(2020, December 11). Ageless Eye, Oxygen Indicator. Available online: http:\/\/www.mgc.co.jp\/eng\/products\/abc\/ageless\/eye.html."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"404","DOI":"10.1016\/j.meatsci.2014.06.031","article-title":"Active and intelligent packaging systems for a modern society","volume":"98","author":"Realini","year":"2014","journal-title":"Meat Sci."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"4314","DOI":"10.1021\/acsami.5b11933","article-title":"Bioinspired Artificial Melanosomes as Colorimetric Indicators of Oxygen Exposure","volume":"8","author":"Shillingford","year":"2016","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"753","DOI":"10.1080\/02652039709374586","article-title":"Active and smart packaging for meeting consumer demands for quality and safety","volume":"14","author":"Ahvenainen","year":"1997","journal-title":"Food Addit. Contam."},{"key":"ref_59","unstructured":"Balderson, S.N., and Whitewood, R.J. (1995). Gas Indicator for a Package. (5,439,648), U.S. Patent."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"1003","DOI":"10.1039\/b503997p","article-title":"Oxygen indicators and intelligent inks for packaging food","volume":"34","author":"Mills","year":"2005","journal-title":"Chem. Soc. Rev."},{"key":"ref_61","first-page":"1","article-title":"Low Prevalence of Human Pathogens on Fresh Produce on Farms and in Packing Facilities: A Systematic Review","volume":"6","author":"Lofgren","year":"2018","journal-title":"Front. Public Health"},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"19309","DOI":"10.1039\/D0RA01084G","article-title":"Nanotechnology-based approaches for food sensing and packaging applications","volume":"10","author":"Mustafa","year":"2020","journal-title":"RSC Adv."},{"key":"ref_63","first-page":"246","article-title":"New possibilities for quality control of aseptic packages: Microbiological spoilage and seal defect detection using head-space indicators","volume":"23","author":"Mattila","year":"1990","journal-title":"Leb. Technol."},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1016\/j.colsurfa.2005.06.007","article-title":"Synthesis and characterization of semiconducting polypyrrole\/polyacrylamide microparticles with GOx for biosensor applications","volume":"270\u2013271","author":"Retama","year":"2005","journal-title":"Colloids Surfaces A Physicochem. Eng. Asp."},{"key":"ref_65","doi-asserted-by":"crossref","first-page":"791","DOI":"10.1016\/j.biomaterials.2006.09.046","article-title":"Biomolecular immobilization on conducting polymers for biosensing applications","volume":"28","author":"Ahuja","year":"2007","journal-title":"Biomaterials"},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"226","DOI":"10.1016\/j.snb.2006.12.006","article-title":"Characterisation of polymer nanocomposite sensors for quantification of bacterial cultures","volume":"126","author":"Arshak","year":"2007","journal-title":"Sens. Actuators B Chem."},{"key":"ref_67","unstructured":"DeCicco, B.T., and Keeven, J.K. (1995). Detection System for Microbial Contamination in Health-Care Products. (5,443,987), U.S. Patent."},{"key":"ref_68","doi-asserted-by":"crossref","unstructured":"Kress-Rogers, E., and Brimelow, C.J.B. (2001). Instrumentation and Sensors for the Food Industry, Woodhead Publishing. [2nd ed.].","DOI":"10.1201\/9781439833049"},{"key":"ref_69","doi-asserted-by":"crossref","first-page":"1309","DOI":"10.1021\/jf040319t","article-title":"The Application of Biosensors to Fresh Produce and the Wider Food Industry","volume":"53","author":"Terry","year":"2005","journal-title":"J. Agric. Food Chem."},{"key":"ref_70","unstructured":"(2020, December 13). SIRA Technologies Food Sentinel System. Available online: https:\/\/www.adazonusa.com\/blog\/barcode-industry\/sira-technologies-food-sentinel-system."},{"key":"ref_71","unstructured":"(2021, January 31). Active Packaging and Intelligent Packaging for Fruits and Vegetables. Available online: https:\/\/www.ukessays.com\/essays\/environmental-studies\/active-packaging-and-intelligent-packaging-for-fruits-and-vegetables.php?vref=1."},{"key":"ref_72","unstructured":"(2020, December 06). How Does an NDIR CO2 Sensor Work?. Available online: https:\/\/www.co2meter.com\/blogs\/news\/6010192-how-does-an-ndir-co2-sensor-work."},{"key":"ref_73","doi-asserted-by":"crossref","first-page":"5752","DOI":"10.1002\/anie.201201042","article-title":"Selective Detection of Ethylene Gas Using Carbon Nanotube-based Devices: Utility in Determination of Fruit Ripeness","volume":"51","author":"Esser","year":"2012","journal-title":"Angew. Chem. Int. Ed."},{"key":"ref_74","doi-asserted-by":"crossref","first-page":"6300","DOI":"10.1021\/ac2009756","article-title":"Electrochemical sensing of ethylene employing a thin ionic-liquid layer","volume":"83","author":"Zevenbergen","year":"2011","journal-title":"Anal. Chem."},{"key":"ref_75","doi-asserted-by":"crossref","unstructured":"Ma, L., Wang, L., Chen, R., Chang, K., Wang, S., Hu, X., Sun, X., Lu, Z., Sun, H., and Guo, Q. (2016). A low cost compact measurement system constructed using a smart electrochemical sensor for the real-time discrimination of fruit ripening. Sensors, 16.","DOI":"10.3390\/s16040501"},{"key":"ref_76","doi-asserted-by":"crossref","first-page":"347","DOI":"10.1093\/aob\/mcs259","article-title":"Current methods for detecting ethylene in plants","volume":"111","author":"Cristescu","year":"2013","journal-title":"Ann. Bot."},{"key":"ref_77","doi-asserted-by":"crossref","first-page":"129","DOI":"10.2174\/187221210791233425","article-title":"Time-Temperature Indicators for Perishable Products","volume":"4","author":"Maschietti","year":"2010","journal-title":"Recent Pat. Eng."},{"key":"ref_78","unstructured":"(2020, December 06). 3MTM MonitorMarkTM Time Temperature Indicators. Available online: https:\/\/www.3m.com\/3M\/en_US\/company-us\/all-3m-products\/~\/MONMARK-3M-MonitorMark-Time-Temperature-Indicators\/?N=5002385+3293785721&rt=rud."},{"key":"ref_79","unstructured":"(2020, December 06). How RFID Works. Available online: https:\/\/electronics.howstuffworks.com\/gadgets\/high-tech-gadgets\/rfid.htm."},{"key":"ref_80","unstructured":"(2020, December 06). Active RFID Vs. Passive RFID: Which Differences?. Available online: https:\/\/elainnovation.com\/active-rfid-vs-passive-rfid-which-differences.html."},{"key":"ref_81","doi-asserted-by":"crossref","unstructured":"Badia-Melis, R., Ruiz-Garcia, L., Garcia-Hierro, J., and Robla Villalba, J.I. (2015). Refrigerated fruit storage monitoring combining two different wireless sensing technologies: RFID and WSN. Sensors, 15.","DOI":"10.3390\/s150304781"},{"key":"ref_82","unstructured":"(2020, December 06). Smart Packaging\u2014A New Use for RFID Tags. Available online: https:\/\/butlertechnologies.com\/smart-packaging-new-use-rfid-tags\/."},{"key":"ref_83","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1016\/j.tifs.2014.06.009","article-title":"Intelligent food packaging: The next generation","volume":"39","author":"Vanderroost","year":"2014","journal-title":"Trends Food Sci. Technol."},{"key":"ref_84","doi-asserted-by":"crossref","unstructured":"Tang, X., Tan, C., Chen, A., Li, Z., and Shuai, R. (2020). Design and implementation of temperature and humidity monitoring system for small cold storage of fruit and vegetable based on Arduino. J. Phys. Conf. Ser., 1601.","DOI":"10.1088\/1742-6596\/1601\/6\/062010"},{"key":"ref_85","doi-asserted-by":"crossref","unstructured":"Jedermann, R., Praeger, U., Geyer, M., and Lang, W. (2014). Remote quality monitoring in the banana chain. Philos. Trans. R. Soc. A Math. Phys. Eng. Sci., 372.","DOI":"10.1098\/rsta.2013.0303"},{"key":"ref_86","unstructured":"(2020, December 06). FreshView. Available online: https:\/\/www.freshview.com.au\/page\/sensor_ec_co2."},{"key":"ref_87","doi-asserted-by":"crossref","first-page":"529","DOI":"10.1016\/j.snb.2016.03.040","article-title":"A review on non-dispersive infrared gas sensors: Improvement of sensor detection limit and interference correction","volume":"231","author":"Dinh","year":"2016","journal-title":"Sens. Actuators B Chem."},{"key":"ref_88","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1146\/annurev.cellbio.16.1.1","article-title":"Ethylene: A Gaseous Signal Molecule in Plants","volume":"16","author":"Bleecker","year":"2000","journal-title":"Annu. Rev. Cell Dev. Biol."},{"key":"ref_89","doi-asserted-by":"crossref","unstructured":"Valente, J., Almeida, R., and Kooistra, L. (2019). A Comprehensive Study of the Potential Application of Flying Ethylene-Sensitive Sensors for Ripeness Detection in Apple Orchards. Sensors, 19.","DOI":"10.3390\/s19020372"},{"key":"ref_90","unstructured":"(2020, December 06). Respiration and Ethylene and their Relationship to Postharvest Handling. Available online: https:\/\/eorganic.org\/node\/2671."},{"key":"ref_91","doi-asserted-by":"crossref","first-page":"1113","DOI":"10.1038\/2051113a0","article-title":"Effect of Ionizing Radiation on Respiration and Ethylene Production of Avocado Fruit","volume":"205","author":"Young","year":"1965","journal-title":"Nature"},{"key":"ref_92","doi-asserted-by":"crossref","first-page":"1","DOI":"10.3389\/fpls.2017.00475","article-title":"Ethylene role in plant growth, development and senescence: Interaction with other phytohormones","volume":"8","author":"Iqbal","year":"2017","journal-title":"Front. Plant. Sci."},{"key":"ref_93","doi-asserted-by":"crossref","first-page":"181","DOI":"10.1016\/0092-8674(92)90093-R","article-title":"One rotten apple spoils the whole bushel: The role of ethylene in fruit ripening","volume":"70","author":"Theologis","year":"1992","journal-title":"Cell"},{"key":"ref_94","doi-asserted-by":"crossref","first-page":"77","DOI":"10.1016\/S0924-2244(99)00032-1","article-title":"Developments in the active packaging of foods","volume":"10","author":"Vermeiren","year":"1999","journal-title":"Trends Food Sci. Technol."},{"key":"ref_95","doi-asserted-by":"crossref","first-page":"314","DOI":"10.1016\/j.jbiotec.2009.01.002","article-title":"A novel hybrid dual-channel catalytic-biological sensor system for assessment of fruit quality","volume":"139","author":"Weber","year":"2009","journal-title":"J. Biotechnol."},{"key":"ref_96","doi-asserted-by":"crossref","first-page":"1022","DOI":"10.1016\/j.procir.2018.03.240","article-title":"Smart Packaging: Opportunities and Challenges","volume":"72","author":"Schaefer","year":"2018","journal-title":"Procedia CIRP"},{"key":"ref_97","doi-asserted-by":"crossref","first-page":"165","DOI":"10.1111\/1541-4337.12322","article-title":"Active Packaging Applications for Food","volume":"17","author":"Yildirim","year":"2018","journal-title":"Compr. Rev. Food Sci. Food Saf."},{"key":"ref_98","doi-asserted-by":"crossref","first-page":"6125","DOI":"10.1007\/s13197-015-1766-7","article-title":"Smart packaging systems for food applications: A review","volume":"52","author":"Biji","year":"2015","journal-title":"J. Food Sci. 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