{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,23]],"date-time":"2026-04-23T10:24:38Z","timestamp":1776939878697,"version":"3.51.4"},"reference-count":128,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2021,3,18]],"date-time":"2021-03-18T00:00:00Z","timestamp":1616025600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["2020.04441.BD"],"award-info":[{"award-number":["2020.04441.BD"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100006111","name":"Minist\u00e9rio da Ci\u00eancia, Tecnologia e Ensino Superior","doi-asserted-by":"publisher","award":["UIDB\/50006\/2020"],"award-info":[{"award-number":["UIDB\/50006\/2020"]}],"id":[{"id":"10.13039\/501100006111","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100006111","name":"Minist\u00e9rio da Ci\u00eancia, Tecnologia e Ensino Superior","doi-asserted-by":"publisher","award":["UIDP\/50006\/2020"],"award-info":[{"award-number":["UIDP\/50006\/2020"]}],"id":[{"id":"10.13039\/501100006111","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100006111","name":"Minist\u00e9rio da Ci\u00eancia, Tecnologia e Ensino Superior","doi-asserted-by":"publisher","award":["UIDB\/04077\/2020"],"award-info":[{"award-number":["UIDB\/04077\/2020"]}],"id":[{"id":"10.13039\/501100006111","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100018886","name":"Laborat\u00f3rio Associado para a Qu\u00edmica Verde","doi-asserted-by":"publisher","award":["UIDB\/50006\/2020"],"award-info":[{"award-number":["UIDB\/50006\/2020"]}],"id":[{"id":"10.13039\/501100018886","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Mechanical Engineering and Resource Sustainability Center","award":["UIDB\/04077\/2020"],"award-info":[{"award-number":["UIDB\/04077\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Intelligent food packaging is emerging as a novel technology, capable of monitoring the quality and safety of food during its shelf-life time. This technology makes use of indicators and sensors that are applied in the packaging and that detect changes in physiological variations of the foodstuffs (due to microbial and chemical degradation). These indicators usually provide information, e.g., on the degree of freshness of the product packed, through a color change, which is easily identified, either by the food distributor and the consumer. However, most of the indicators that are currently used are non-renewable and non-biodegradable synthetic materials. Because there is an imperative need to improve food packaging sustainability, choice of sensors should also reflect this requirement. Therefore, this work aims to revise the latest information on bio-based sensors, based on compounds obtained from natural extracts, that can, in association with biopolymers, act as intelligent or smart food packaging. Its application into several perishable foods is summarized. It is clear that bioactive extracts, e.g., anthocyanins, obtained from a variety of sources, including by-products of the food industry, present a substantial potential to act as bio-sensors. Yet, there are still some limitations that need to be surpassed before this technology reaches a mature commercial stage.<\/jats:p>","DOI":"10.3390\/s21062148","type":"journal-article","created":{"date-parts":[[2021,3,18]],"date-time":"2021-03-18T22:19:36Z","timestamp":1616105976000},"page":"2148","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":205,"title":["Bio-Based Sensors for Smart Food Packaging\u2014Current Applications and Future Trends"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8136-3385","authenticated-orcid":false,"given":"Carolina","family":"Rodrigues","sequence":"first","affiliation":[{"name":"MEtRICs, Departamento de Ci\u00eancias e Tecnologia da Biomassa, NOVA School of Science and Technology|FCT NOVA, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8381-9780","authenticated-orcid":false,"given":"Victor Gomes Lauriano","family":"Souza","sequence":"additional","affiliation":[{"name":"MEtRICs, Departamento de Ci\u00eancias e Tecnologia da Biomassa, NOVA School of Science and Technology|FCT NOVA, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal"},{"name":"INL, International Iberian Nanotechnology Laboratory, Av. Mestre Jos\u00e9 Veiga s\/n, 4715-330 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7032-3436","authenticated-orcid":false,"given":"Isabel","family":"Coelhoso","sequence":"additional","affiliation":[{"name":"LAQV-REQUIMTE, Departamento de Qu\u00edmica, NOVA School of Science and Technology|FCT NOVA, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9270-3982","authenticated-orcid":false,"given":"Ana Lu\u00edsa","family":"Fernando","sequence":"additional","affiliation":[{"name":"MEtRICs, Departamento de Ci\u00eancias e Tecnologia da Biomassa, NOVA School of Science and Technology|FCT NOVA, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2021,3,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Ghoshal, G. (2018). Recent Trends in Active, Smart, and Intelligent Packaging for Food Products. 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