{"id":6160,"date":"2026-02-05T12:08:19","date_gmt":"2026-02-05T11:08:19","guid":{"rendered":"https:\/\/agora.xtec.cat\/iescambrils\/?p=6160"},"modified":"2026-02-05T12:18:23","modified_gmt":"2026-02-05T11:18:23","slug":"investigacio-al-laboratori-analisi-de-proteines-amb-la-reaccio-de-biuret-a-1r-de-batxillerat","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/iescambrils\/general\/investigacio-al-laboratori-analisi-de-proteines-amb-la-reaccio-de-biuret-a-1r-de-batxillerat\/","title":{"rendered":"Investigaci\u00f3 al laboratori: An\u00e0lisi de prote\u00efnes amb la reacci\u00f3 de Biuret a 1r de Batxillerat."},"content":{"rendered":"\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-1 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 33%;\n\t\t\t}\n\t\t\t#gallery-1 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-1' class='gallery galleryid-6160 gallery-columns-3 gallery-size-thumbnail'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/agora.xtec.cat\/iescambrils\/general\/investigacio-al-laboratori-analisi-de-proteines-amb-la-reaccio-de-biuret-a-1r-de-batxillerat\/attachment\/img_3034\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/agora.xtec.cat\/iescambrils\/wp-content\/uploads\/usu1210\/2026\/02\/IMG_3034-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/agora.xtec.cat\/iescambrils\/general\/investigacio-al-laboratori-analisi-de-proteines-amb-la-reaccio-de-biuret-a-1r-de-batxillerat\/attachment\/img_2908-1\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/agora.xtec.cat\/iescambrils\/wp-content\/uploads\/usu1210\/2026\/02\/IMG_2908-1-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/agora.xtec.cat\/iescambrils\/general\/investigacio-al-laboratori-analisi-de-proteines-amb-la-reaccio-de-biuret-a-1r-de-batxillerat\/attachment\/img_3026\/'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/agora.xtec.cat\/iescambrils\/wp-content\/uploads\/usu1210\/2026\/02\/IMG_3026-150x150.jpeg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p>Dins les activitats pr\u00e0ctiques de l&#8217;assignatura de Biologia, els estudiants\u00a0<b>de 1r de Batxillerat<\/b>\u00a0han realitzat la identificaci\u00f3 experimental d&#8217;enlla\u00e7os pept\u00eddics mitjan\u00e7ant la coneguda\u00a0<b>prova de Biuret<\/b>.<b><\/b><\/p>\n<p><b>Objectius de la pr\u00e0ctica<\/b>\u00a0L&#8217;objectiu principal de la sessi\u00f3 ha estat comprendre l&#8217;estructura de les prote\u00efnes i observar el canvi de coloraci\u00f3 que es produeix en pres\u00e8ncia d&#8217;aquestes biomol\u00e8cules.\u00a0Aquesta t\u00e8cnica es basa en una reacci\u00f3 de complexaci\u00f3 en medi b\u00e0sic, utilitzant Hidr\u00f2xid S\u00f2dic i Sulfat de Coure.<\/p>\n<p><b>De la teoria a la vida real: Qu\u00e8 hem analitzat?<\/b>\u00a0Per fer l&#8217;experi\u00e8ncia m\u00e9s propera a la realitat quotidiana, els alumnes han comparat la concentraci\u00f3 proteica qualitativa de diversos aliments naturals enfront de suplements artificials. Les mostres analitzades han incl\u00f2s:<\/p>\n<ul>\n<li><b>Suplement de prote\u00efna en pols<\/b>\u00a0(t\u00edpic de gimn\u00e0s).<\/li>\n<li><b>Clara d&#8217;ou (alb\u00famina)<\/b>\u00a0i\u00a0<b>llet<\/b>.<\/li>\n<li><b>Soluci\u00f3 de sucre<\/b>\u00a0i\u00a0<b>aigua<\/b>\u00a0(utilitzada com a control negatiu).<\/li>\n<\/ul>\n<div><b>Resultats i aprenentatge<\/b>\u00a0L&#8217;alumnat ha pogut observar com les mostres amb prote\u00efnes viraven cap a un color\u00a0<b>violeta<\/b>, sent m\u00e9s intens com m\u00e9s alta era la concentraci\u00f3, mentre que les mostres sense enlla\u00e7os pept\u00eddics romanien de color blau.<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\t\t\t#gallery-2 {<br \/>\n\t\t\t\tmargin: auto;<br \/>\n\t\t\t}<br \/>\n\t\t\t#gallery-2 .gallery-item {<br \/>\n\t\t\t\tfloat: left;<br \/>\n\t\t\t\tmargin-top: 10px;<br \/>\n\t\t\t\ttext-align: center;<br \/>\n\t\t\t\twidth: 33%;<br \/>\n\t\t\t}<br \/>\n\t\t\t#gallery-2 img {<br \/>\n\t\t\t\tborder: 2px solid #cfcfcf;<br \/>\n\t\t\t}<br \/>\n\t\t\t#gallery-2 .gallery-caption {<br \/>\n\t\t\t\tmargin-left: 0;<br \/>\n\t\t\t}<br \/>\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/<\/p>\n<p>\t\t\t\t<a href='https:\/\/agora.xtec.cat\/iescambrils\/general\/investigacio-al-laboratori-analisi-de-proteines-amb-la-reaccio-de-biuret-a-1r-de-batxillerat\/attachment\/img_3034\/'><\/a><\/p>\n<p>\t\t\t\t<a href='https:\/\/agora.xtec.cat\/iescambrils\/general\/investigacio-al-laboratori-analisi-de-proteines-amb-la-reaccio-de-biuret-a-1r-de-batxillerat\/attachment\/img_2908-1\/'><\/a><\/p>\n<p>\t\t\t\t<a href='https:\/\/agora.xtec.cat\/iescambrils\/general\/investigacio-al-laboratori-analisi-de-proteines-amb-la-reaccio-de-biuret-a-1r-de-batxillerat\/attachment\/img_3026\/'><\/a><\/p>\n<p>Dins les activitats pr\u00e0ctiques de l&#8217;assignatura de Biologia, els estudiants\u00a0de 1r de Batxillerat\u00a0han realitzat la identificaci\u00f3 experimental d&#8217;enlla\u00e7os pept\u00eddics mitjan\u00e7ant la&hellip;  <a href=\"https:\/\/agora.xtec.cat\/iescambrils\/general\/investigacio-al-laboratori-analisi-de-proteines-amb-la-reaccio-de-biuret-a-1r-de-batxillerat\/\" title=\"Read Investigaci\u00f3 al laboratori: An\u00e0lisi de prote\u00efnes amb la reacci\u00f3 de Biuret a 1r de Batxillerat.\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":85,"featured_media":6163,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[31,8,1,29],"tags":[],"class_list":["post-6160","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ampa","category-bat","category-general","category-portada"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/iescambrils\/wp-json\/wp\/v2\/posts\/6160","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/iescambrils\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/iescambrils\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iescambrils\/wp-json\/wp\/v2\/users\/85"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iescambrils\/wp-json\/wp\/v2\/comments?post=6160"}],"version-history":[{"count":1,"href":"https:\/\/agora.xtec.cat\/iescambrils\/wp-json\/wp\/v2\/posts\/6160\/revisions"}],"predecessor-version":[{"id":6164,"href":"https:\/\/agora.xtec.cat\/iescambrils\/wp-json\/wp\/v2\/posts\/6160\/revisions\/6164"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/iescambrils\/wp-json\/wp\/v2\/media\/6163"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/iescambrils\/wp-json\/wp\/v2\/media?parent=6160"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iescambrils\/wp-json\/wp\/v2\/categories?post=6160"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/iescambrils\/wp-json\/wp\/v2\/tags?post=6160"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}