{"id":31859,"date":"2011-09-01T15:00:00","date_gmt":"2011-09-01T15:00:00","guid":{"rendered":"http:\/\/dev.matis.is\/?p=31841"},"modified":"2021-11-18T10:24:30","modified_gmt":"2021-11-18T10:24:30","slug":"effect-of-cooling-and-packaging-methods-on-the-quality-deterioration-of-redfish-fillets","status":"publish","type":"post","link":"https:\/\/matis.is\/en\/skyrsla\/effect-of-cooling-and-packaging-methods-on-the-quality-deterioration-of-redfish-fillets\/","title":{"rendered":"Effect of cooling and packaging methods on the quality deterioration of redfish fillets"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Effect of cooling and packaging methods on the quality deterioration of redfish fillets<\/h2>\n\n\n\n<p>Markmi\u00f0 tilraunarinnar var a\u00f0 meta \u00e1hrif krapa\u00edsk\u00e6lingar eftir fl\u00f6kun og\/e\u00f0a p\u00f6kkun \u00ed loftt\u00e6mdar umb\u00fa\u00f0ir \u00e1 g\u00e6\u00f0ar\u00fdrnun ferskra karfaflaka. Fl\u00f6kin voru geymd vi\u00f0&nbsp;\u20101 \u00b0C \u00ed 6 daga til a\u00f0 herma eftir vel \u00fatf\u00e6r\u00f0um sj\u00f3flutningi \u00ed frau\u00f0plastk\u00f6ssum og svo vi\u00f0 2 \u00b0C l\u00edkt og gerist eftir afhendingu erlendis og geymslu \u00ed sm\u00e1s\u00f6lu. Fylgst var me\u00f0 v\u00f6ru\u2010&nbsp; og umhverfishitastigi fr\u00e1 p\u00f6kkun og framkv\u00e6mt skynmat, \u00f6rveru\u2010&nbsp;og <a href=\"https:\/\/matis.is\/en\/frettir\/samstarfssamningur-matis-og-als-i-svithjod\/\">chemical measurements<\/a>. Fiskurinn var veiddur a\u00f0 vorlagi og unninn 6 d\u00f6gum eftir vei\u00f0i. Ni\u00f0urst\u00f6\u00f0ur s\u00fdna a\u00f0 g\u00e6\u00f0i hr\u00e1efnisins voru ekki sem best vi\u00f0 p\u00f6kkun \u00fear sem \u00fer\u00e1nunarferli (PV og TBARS) var komi\u00f0 vel af sta\u00f0. \u00deetta sk\u00fdrir v\u00e6ntanlega hvers vegna engin af \u00feessum k\u00e6lia\u00f0fer\u00f0um leiddi til geymslu\u00feolsaukningar. Einnig kom \u00ed lj\u00f3s a\u00f0 enginn \u00e1vinningur f\u00e9kkst vi\u00f0 a\u00f0 k\u00e6la fl\u00f6kin \u00f3varin \u00ed krapa\u00eds \u00fear sem \u00f6rveruv\u00f6xtur og myndun TVB\u2010N og TMA \u00ed fl\u00f6kunum ger\u00f0ist hra\u00f0ar vi\u00f0 frekari geymslu. Hins vegar vir\u00f0ist vera \u00e1kj\u00f3sanlegra a\u00f0 k\u00e6la loftt\u00e6md p\u00f6kku\u00f0 fl\u00f6k \u00ed krapa\u00eds \u00fev\u00ed \u00feessi a\u00f0fer\u00f0 leiddi til h\u00e6gari vaxtar skemmdar\u00f6rvera, l\u00e6gra magns TMA og h\u00e6gara \u00fer\u00e1nunarferlis. Photobacterium phosphoreum er mikilv\u00e6g \u00ed skemmdarferli ferskra karfaflaka, \u00f3h\u00e1\u00f0 p\u00f6kkunara\u00f0fer\u00f0.<\/p>\n\n\n\n<p>The aim of this study was to evaluate the effect of slurry ice cooling in process (post \u2010 filleting) and packaging method (+\/\u2010 oxygen) on the quality deterioration of skinned redfish fillets during storage in expanded polystyrene boxes simulating well \u2010 performed sea freight transportation (6 days at \u20101 \u00b0 C) followed by storage at the retailer (2 \u00b0 C). Also, to assess the use of vacuum \u2010 packaging to protect the fillets from direct contact with the cooling medium (slurry ice) and to achieve superchilling following extended treatment. Temperature monitoring as well as sensory, chemical and microbial analyzes were performed. The fish was caught in the spring and processed 6 days post catch. The results show that quality of the fillets was not optimal at packaging, due to the detection of primary and secondary oxidation products. This may have been the reason why shelf life extension was not achieved by any of the methods evaluated. Further, there was no advantage of cooling the fillets unpacked since this method stimulated microbial growth and formation of basic amines. On the other hand, slurry ice cooling of vacuum \u2010 packaged fillets led to a slower microbial development, the lowest TMA level and delayed autoxidation. Finally, the importance of Photobacterium phosphoreum in the spoilage process of redfish fillets, independently of the packaging method, was demonstrated.<\/p>","protected":false},"excerpt":{"rendered":"<p>Effect of cooling and packaging methods on the quality deterioration of redfish fillets Markmi\u00f0 tilraunarinnar var a\u00f0 meta \u00e1hrif krapa\u00edsk\u00e6lingar [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[15],"tags":[174,336,406,454,1195,1196,442,633,338,1197,455,216,1198,1199,1200,515],"class_list":["post-31859","post","type-post","status-publish","format-standard","hentry","category-skyrsla","tag-gaedaryrnun","tag-geymsluthol","tag-karfaflok","tag-krapais","tag-microbial-spoilage","tag-oxidation","tag-quality-deterioration","tag-redfish-fillets","tag-shelf-life","tag-skemmdarorverur","tag-slurry-ice","tag-superchilling","tag-undirkaeling","tag-vacuum-packaging","tag-vakum-pokkun","tag-thranun"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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