{"id":10970,"date":"2022-12-16T09:37:09","date_gmt":"2022-12-16T08:37:09","guid":{"rendered":"https:\/\/fei-online.com\/?p=10970"},"modified":"2022-12-16T09:37:09","modified_gmt":"2022-12-16T08:37:09","slug":"researchers-develop-a-fully-edible-temperature-sensor-to-show-if-frozen-food-has-previously-thawed","status":"publish","type":"post","link":"https:\/\/fei-online.com\/researchers-develop-a-fully-edible-temperature-sensor-to-show-if-frozen-food-has-previously-thawed\/","title":{"rendered":"Researchers develop a fully edible temperature sensor to show if frozen food has previously thawed"},"content":{"rendered":"<div id='av_section_1'  class='avia-section main_color avia-section-default avia-no-border-styling  avia-bg-style-scroll  avia-builder-el-0  avia-builder-el-no-sibling   container_wrap fullsize' style=' '  ><div class='container' ><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-10970'><div class='entry-content-wrapper clearfix'>\n<div class=\"flex_column av_one_fifth  flex_column_div av-zero-column-padding first  avia-builder-el-1  el_before_av_three_fifth  avia-builder-el-first  \" style='border-radius:0px; '><section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><p style=\"text-align: center\"><div id=\"ads-slider-28\" class=\"custom-slider ads-slider-1976723916 ads-slider\"><ul><li><!--Begin ClixTrac.com Banner Code -->\r\n<a href=\"https:\/\/clixtrac.com\/goto\/?308404\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/clixtrac.com\/banner\/308404.jpg\" alt=\"Free from food\" title=\"Free from food\" border=\"0\" \/><\/a>\r\n<!--End ClixTrac.com Banner Code --><\/li><li><!--Begin ClixTrac.com Banner Code -->\r\n<a href=\"https:\/\/clixtrac.com\/banner\/click.php?banner=302805\" target=\"_blank\" rel=\"noopener\">\r\n<img decoding=\"async\" src=\"https:\/\/clixtrac.com\/banner\/302805.jpg\" alt=\"LUBRIPLATE\" title=\"LUBRIPLATE\" border=\"0\" width=\"120\" height=\"600\" \/><\/a>\r\n<!--End ClixTrac.com Banner Code --><\/li><li><div style=\"margin-left: auto; margin-right: auto; text-align: center; \" id=\"ads-642501895\"><!--Begin ClixTrac.com Banner Code -->\r\n<a href=\"https:\/\/clixtrac.com\/banner\/click.php?banner=297426\" target=\"_blank\" rel=\"noopener\">\r\n<img decoding=\"async\" width=\"100%\" height=\"auto\" src=\"https:\/\/clixtrac.com\/banner\/297426.jpg\" alt=\"Click here for more information!\" title=\"Click here for more information!\" border=\"0\" \/><\/a>\r\n<!--End ClixTrac.com Banner Code --><\/div><\/li><\/ul><\/div><script>( window.advanced_ads_ready || jQuery( document ).ready ).call( null, function() {var $adsslider1976723916 = jQuery( \".ads-slider-1976723916\" );$adsslider1976723916.on( \"unslider.ready\", function() { jQuery( \"div.custom-slider ul li\" ).css( \"display\", \"block\" ); });$adsslider1976723916.unslider({ delay:5000, autoplay:true, nav:false, arrows:false, infinite:true });$adsslider1976723916.on(\"mouseover\", function(){$adsslider1976723916.unslider(\"stop\");}).on(\"mouseout\", function() {$adsslider1976723916.unslider(\"start\");});});<\/script><\/p>\n<\/div><\/section><\/div><div class=\"flex_column av_three_fifth  flex_column_div av-zero-column-padding   avia-builder-el-3  el_after_av_one_fifth  el_before_av_one_fifth  \" style='border-radius:0px; '><section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><p style=\"text-align: center\"><\/p>\n<\/div><\/section><br \/>\n<section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><header class=\"entry-content-header\"><h1 class=\"post-title entry-title\" itemprop=\"headline\">Researchers develop a fully edible temperature sensor to show if frozen food has previously thawed<\/h1><span class=\"post-meta-infos\">\/ <span class=\"blog-categories minor-meta\">in <a href=\"https:\/\/fei-online.com\/category\/featured-articles\/\" rel=\"tag\">Featured Articles<\/a> <\/span><\/span><\/header>\n<\/div><\/section><br \/>\n<section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><h3>When you\u2019re standing in the frozen food aisle, it\u2019s nearly impossible to know whether that steak has thawed and been refrozen \u2014 a process with potentially harmful consequences. So, researchers reporting in ACS Sensors have designed a food-grade device from edible materials, including table salt, red cabbage and beeswax, that lets you know. The proof-of-concept sensor provides a colour readout when it\u2019s warmed above a specific temperature, which is tunable from -58 F to 32 F (-50 C to 0 C).<\/h3>\n<p><!--more--><\/p>\n<p>Keeping food cold while it\u2019s transported and stored is essential to retaining its flavour and quality, reducing the risk of food poisoning and minimizing waste. While researchers have developed devices that alert manufacturers when cold items are exposed to unwanted temperatures, they only indicate changes above freezing. To create a sensor for frozen products, one solution could be to use materials with electrical properties that are altered upon melting. It would also be ideal if such changes could produce a signal, such as a visible colour change. In addition, an edible electronic device, which uses only food and consumable components, would be the safest way to monitor food. So, Ivan Ilic, Mario Caironi and colleagues set out to develop the first fully edible, self-powered temperature sensor with a visible colour indicator for use with frozen products.<\/p>\n<\/div><\/section><br \/>\n<div   class='hr hr-default   avia-builder-el-7  el_after_av_textblock  el_before_av_image '><span class='hr-inner ' ><span class='hr-inner-style'><\/span><\/span><\/div><br \/>\n<div  class='avia-image-container  av-styling-    avia-builder-el-8  el_after_av_hr  el_before_av_textblock  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img class='avia_image' src='https:\/\/fei-online.com\/wp-content\/uploads\/sites\/4\/2022\/12\/food-sensor.jpeg' alt='' title='food sensor' height=\"1150\" width=\"1534\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><p><em>A proof-of-concept sensor designed from edible materials produces a visible colour change (seen in the right circle) as a piece of frozen pork thaws.<\/em><br \/>\n<em>Adapted from ACS Sensors 2022. doi: 10.1021\/acssensors.2c01280<\/em><\/p>\n<\/div><\/section><br \/>\n<div   class='hr hr-default   avia-builder-el-10  el_after_av_textblock  el_before_av_textblock '><span class='hr-inner ' ><span class='hr-inner-style'><\/span><\/span><\/div><br \/>\n<section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><p>The researchers started by building a device that generated an electrical current as it defrosted, connecting magnesium and gold electrodes through an electrolyte solution held in a plastic container. They tested the device with solutions of frozen edible electrolytes, including table salt and calcium-containing salts, and naturally electrolyte-rich foods, including a grape, melon and apple. As the solutions defrosted, they conducted current between -50 C and 0 C, which the researchers say could be fine-tuned, based on the amount and identity of the salt. Next, this device was connected to a colour-changing system, containing tin and gold electrodes and red cabbage juice, that produced an irreversible shift from reddish purple to blue when current was applied.<\/p>\n<p>In the final step, the team put all of the parts together in a block of beeswax that held the temperature-activated and indicator solutions in separate chambers, and demonstrated that the self-powered device could be used for frozen food monitoring. The researchers say that their proof-of-concept sensor paves the way for edible materials to be used in inexpensive, safe technologies that alert customers to a frozen product\u2019s storage history.<\/p>\n<p>The authors acknowledge funding from the European Research Council, the European Union\u2019s Horizon 2020 programme and the Sustainability Activity of Istituto Italiano di Tecnologia.<\/p>\n<\/div><\/section><br \/>\n<section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><h4><em>Reference<\/em><\/h4>\n<p><em>1. K. Ilic, L. Lamanna, D. Cortecchia, et. al. Self-Powered Edible Defrosting Sensor. ACS Sensors. 12 October 2022. doi: 10.1021\/acssensors.2c01280<\/em><\/p>\n<\/div><\/section><br \/>\n<div  class='av-social-sharing-box  avia-builder-el-13  el_after_av_textblock  avia-builder-el-last  av-social-sharing-box-minimal '><div class='av-share-box'><h5 class='av-share-link-description av-no-toc '>Share this<\/h5><ul class='av-share-box-list noLightbox'><li class='av-share-link av-social-link-facebook' ><a target=\"_blank\" aria-label=\"Share on Facebook\" href='https:\/\/www.facebook.com\/sharer.php?u=https:\/\/fei-online.com\/researchers-develop-a-fully-edible-temperature-sensor-to-show-if-frozen-food-has-previously-thawed\/&#038;t=Researchers%20develop%20a%20fully%20edible%20temperature%20sensor%20to%20show%20if%20frozen%20food%20has%20previously%20thawed' aria-hidden='false' data-av_icon='\ue8f3' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share on Facebook' rel=\"noopener\"><span class='avia_hidden_link_text'>Share on Facebook<\/span><\/a><\/li><li class='av-share-link av-social-link-twitter' ><a target=\"_blank\" aria-label=\"Share on Twitter\" href='https:\/\/twitter.com\/share?text=Researchers%20develop%20a%20fully%20edible%20temperature%20sensor%20to%20show%20if%20frozen%20food%20has%20previously%20thawed&#038;url=https:\/\/fei-online.com\/?p=10970' aria-hidden='false' data-av_icon='\ue8f1' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share on Twitter' rel=\"noopener\"><span class='avia_hidden_link_text'>Share on Twitter<\/span><\/a><\/li><li class='av-share-link av-social-link-whatsapp' ><a target=\"_blank\" aria-label=\"Share on WhatsApp\" href='https:\/\/api.whatsapp.com\/send?text=https:\/\/fei-online.com\/researchers-develop-a-fully-edible-temperature-sensor-to-show-if-frozen-food-has-previously-thawed\/' aria-hidden='false' data-av_icon='\uf232' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share on WhatsApp' rel=\"noopener\"><span class='avia_hidden_link_text'>Share on WhatsApp<\/span><\/a><\/li><li class='av-share-link av-social-link-linkedin' ><a target=\"_blank\" aria-label=\"Share on LinkedIn\" href='https:\/\/linkedin.com\/shareArticle?mini=true&#038;title=Researchers%20develop%20a%20fully%20edible%20temperature%20sensor%20to%20show%20if%20frozen%20food%20has%20previously%20thawed&#038;url=https:\/\/fei-online.com\/researchers-develop-a-fully-edible-temperature-sensor-to-show-if-frozen-food-has-previously-thawed\/' aria-hidden='false' data-av_icon='\ue8fc' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share on LinkedIn' rel=\"noopener\"><span class='avia_hidden_link_text'>Share on LinkedIn<\/span><\/a><\/li><li class='av-share-link av-social-link-mail' ><a  aria-label=\"Share by Mail\" href='mailto:?subject=Researchers%20develop%20a%20fully%20edible%20temperature%20sensor%20to%20show%20if%20frozen%20food%20has%20previously%20thawed&#038;body=https:\/\/fei-online.com\/researchers-develop-a-fully-edible-temperature-sensor-to-show-if-frozen-food-has-previously-thawed\/' aria-hidden='false' data-av_icon='\ue805' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share by Mail'><span class='avia_hidden_link_text'>Share by Mail<\/span><\/a><\/li><\/ul><\/div><\/div><\/p><\/div><div class=\"flex_column av_one_fifth  flex_column_div av-zero-column-padding   avia-builder-el-14  el_after_av_three_fifth  avia-builder-el-last  \" style='border-radius:0px; 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So, researchers reporting in ACS Sensors have designed a food-grade device from edible materials, including table salt, red cabbage and beeswax, that lets you know. The proof-of-concept [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":10929,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[26],"tags":[],"_links":{"self":[{"href":"https:\/\/fei-online.com\/wp-json\/wp\/v2\/posts\/10970"}],"collection":[{"href":"https:\/\/fei-online.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fei-online.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fei-online.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/fei-online.com\/wp-json\/wp\/v2\/comments?post=10970"}],"version-history":[{"count":2,"href":"https:\/\/fei-online.com\/wp-json\/wp\/v2\/posts\/10970\/revisions"}],"predecessor-version":[{"id":10972,"href":"https:\/\/fei-online.com\/wp-json\/wp\/v2\/posts\/10970\/revisions\/10972"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/fei-online.com\/wp-json\/wp\/v2\/media\/10929"}],"wp:attachment":[{"href":"https:\/\/fei-online.com\/wp-json\/wp\/v2\/media?parent=10970"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fei-online.com\/wp-json\/wp\/v2\/categories?post=10970"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fei-online.com\/wp-json\/wp\/v2\/tags?post=10970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}