{"id":521,"date":"2025-02-18T04:47:23","date_gmt":"2025-02-18T04:47:23","guid":{"rendered":"https:\/\/vingnanam.jfn.ac.lk\/?p=521"},"modified":"2025-02-18T04:47:23","modified_gmt":"2025-02-18T04:47:23","slug":"determination-of-chitin-content-in-shells-of-selected-crab-species-available-in-jaffna","status":"publish","type":"post","link":"https:\/\/vingnanam.jfn.ac.lk\/?p=521","title":{"rendered":"Determination of chitin content in shells of selected crab species available in Jaffna"},"content":{"rendered":"<h4>Authors<\/h4>\n<p>Y. Thapeetha, K. M. D. Senathera Digamadulla, G. Sashikesh, K. Sivashanthini<\/p>\n<h4 id=\"abstract\" class=\"frarrB gsjAMe\">Abstract<\/h4>\n<div class=\"eQHHlj erRRVO pvAcl drApKM pSiCW edZasX bInrdi bQDduM jhQjpY ibCwtb jHVsSk hpftSi jYADwv gIYpWW gCaouQ bpiJH iLeIrS euvmnb dWEByn gMTduG kzWhjJ kGrTuD hCoUSX cMEHgi joaZnP ikXHun jYRjMJ kAjXGO cksOfW jERTDL bTQbBm gCFVTJ jsPgIM fUAnLN dzJchF gCDzvz GHGve yfJWq gpIKX bINCEQ bTrurV iVDmXL gDaDxp iFCSCZ fRdekv fnFPHJ gJNujC eXXgyX bpBxTt eMxTUw dlxxQW dvknbV fFtpRP iBlgIz ibJBrC bobhfO dnRDXP bwXKSp krLtwY bYmdgw eQsVOi itdywl jWLaFk iZJhbs kLUYkr egjWWI kgmHOh jziISh bYOkeh enMKeu eubqet jYoVCR iacOaP HCUCs jLLntq fUakio imSRrt dkXDMO enJcTp iKfJKu gAofhl igxpLC imJVRI klpVDy dsGcTn dwlUMG iDKczH kyIBgn thMLB drLXLT eEhmff bjQUER oCPRg gKcvjY jmLKWF xxWbw hxHqQC iWTHBm evXTJf ezjVPr ggVFqM eFsFfP FEpQK jTudHT\">In the post-war context, Jaffna crab industry is developed, exporting live, fresh de-shelled and processed crabs all around the world. Human consumes only 40% of the crab\u2019s weight as meat and the rest is thrown into the environment as waste shell. This unutilized waste crab shell contains large amount of chitin which can be extracted and utilized for different applications in cosmetics, agriculture, food, medicine and waste water treatment. The present study was carried out to find out the chitin content in selected, most abundant crabs such as Portunus pelagicus, Thalamita crenata and Portunus sanguinolentus available in Jaffna peninsula, during the period of July &#8211; October, 2017. Crabs were deshelled and the shells were dried, ground and screened through &lt; 0.5 mm sieve. Fine particles of the crab shells samples were deproteinized by treating with 3.5% (w\/v) NaOH solution and demineralized by treating with 1 N HCl. The extracted chitin was confirmed via the functional group using Fourier Transmission Infrared Spectroscopy. Higher yield percentage of extracted chitin was observed in the shells of Portunus sanguinolentus (23.38\u00b11.11%) than Portunus pelagicus (15.39\u00b10.73%) and Thalamita crenata (15.84\u00b11.30%). The study revealed that the percentage of protein and calcium carbonate in Portunus sanguinolentus are 18.94\u00b1 1.74% and 62.29\u00b11.92%, in Portunus pelagicus are 22.91\u00b12.03% and 61.70\u00b11.97% and in Thalamita crenata are 15.24\u00b11.45% and 68.92\u00b11.70%, respectively.<\/div>\n<div>\n<h4>Download<\/h4>\n<p><a href=\"https:\/\/vingnanam.jfn.ac.lk\/wp-content\/uploads\/2025\/02\/15-1-3.pdf\">Article [PDF]<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Authors Y. Thapeetha, K. M. D. Senathera Digamadulla, G. Sashikesh, K. Sivashanthini Abstract In the post-war context, Jaffna crab industry is developed, exporting live, fresh de-shelled and processed crabs all around the world. Human consumes only 40% of the crab\u2019s weight as meat and the rest is thrown into the environment as waste shell. This [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[248,249,250,251,247,140,122,246],"class_list":["post-521","post","type-post","status-publish","format-standard","hentry","category-15-1","tag-chitin","tag-crab-shell","tag-demineralization","tag-deproteinization","tag-g-sashikesh","tag-k-sivashanthini","tag-k-m-d-senathera-digamadulla","tag-y-thapeetha"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/vingnanam.jfn.ac.lk\/index.php?rest_route=\/wp\/v2\/posts\/521","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vingnanam.jfn.ac.lk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vingnanam.jfn.ac.lk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vingnanam.jfn.ac.lk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vingnanam.jfn.ac.lk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=521"}],"version-history":[{"count":1,"href":"https:\/\/vingnanam.jfn.ac.lk\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions"}],"predecessor-version":[{"id":522,"href":"https:\/\/vingnanam.jfn.ac.lk\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions\/522"}],"wp:attachment":[{"href":"https:\/\/vingnanam.jfn.ac.lk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vingnanam.jfn.ac.lk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vingnanam.jfn.ac.lk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}