{"id":28800,"date":"2019-11-14T10:53:45","date_gmt":"2019-11-14T08:53:45","guid":{"rendered":"https:\/\/www.bioecoactual.com\/?p=28800"},"modified":"2025-06-13T13:14:33","modified_gmt":"2025-06-13T11:14:33","slug":"quimica-en-els-aliments-i-additius-alimentaris","status":"publish","type":"post","link":"https:\/\/www.bioecoactual.com\/ca\/2019\/11\/14\/quimica-en-els-aliments-i-additius-alimentaris\/","title":{"rendered":"Qu\u00edmica en els Aliments I: additius alimentaris"},"content":{"rendered":"<p>Qu\u00e8 \u00e9s un <strong>additiu<\/strong>?, quina funci\u00f3 t\u00e9 en l&#8217;aliment?, quina \u00e9s la seva normativa?, es pot fer un \u00fas raonable d&#8217;additius?, com localitzar-los en l&#8217;etiquetatge? En la hist\u00f2ria del desenvolupament tecnol\u00f2gic i industrial, el seu \u00fas ha perm\u00e8s que gaudim d&#8217;una gran disponibilitat d&#8217;aliments, tot i que actualment, la tecnologia aliment\u00e0ria est\u00e0 evolucionant cap a m\u00e8todes que permeten racionalitzar i minimitzar l&#8217;\u00fas d&#8217;additius.<\/p>\n<p><!--more--><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-28796\" src=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/11\/Qu\u00edmica-en-los-alimentos_1.jpg\" alt=\"Qu\u00edmica en los Alimentos I: aditivos alimentarios\" width=\"1200\" height=\"818\" srcset=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/11\/Qu\u00edmica-en-los-alimentos_1.jpg 1200w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/11\/Qu\u00edmica-en-los-alimentos_1-768x524.jpg 768w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/11\/Qu\u00edmica-en-los-alimentos_1-218x150.jpg 218w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/11\/Qu\u00edmica-en-los-alimentos_1-696x474.jpg 696w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/11\/Qu\u00edmica-en-los-alimentos_1-1068x728.jpg 1068w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/11\/Qu\u00edmica-en-los-alimentos_1-616x420.jpg 616w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<h3>Qu\u00e8 \u00e9s un additiu i com regula?<\/h3>\n<p><strong>Un additiu \u00e9s una subst\u00e0ncia qu\u00edmica afegida als aliments amb un prop\u00f2sit tecnol\u00f2gic<\/strong> (en la seva fase de fabricaci\u00f3, transformaci\u00f3, preparaci\u00f3, tractament i \/o envasat), per prevenir i evitar riscos provocats per les alteracions causades per microorganismes (conservaci\u00f3) i per mantenir les qualitats organol\u00e8ptiques (color, olor, sabor i textura) de l&#8217;aliment. <strong>No es consideren aliments ja que no posseeixen valor nutritiu<\/strong>.<\/p>\n<blockquote><p>La tecnologia aliment\u00e0ria est\u00e0 evolucionant cap a m\u00e8todes que permeten racionalitzar i minimitzar l&#8217;\u00fas d&#8217;additius<\/p><\/blockquote>\n<p>L&#8217;\u00fas dels additius en la ind\u00fastria aliment\u00e0ria ha de ser sempre segur, justificat, transparent i benefici\u00f3s en el seu prop\u00f2sit. No poden afegir-se de forma indiscriminada a qualsevol aliment ni en qualsevol quantitat. Estan regulats a Europa, de manera que els additius autoritzats i les seves condicions d&#8217;\u00fas figuren en el Reglament (CE) n\u00ba 1333\/2008 i tamb\u00e9 a la base de dades d&#8217;additius de la Comissi\u00f3 Europea. Es classifiquen en funci\u00f3 de les categories d&#8217;aliments a les que poden afegir-se i sempre estan definides les quantitats l\u00edmit que es poden utilitzar. En alguns casos el l\u00edmit \u00e9s indefinit o el que es diu &#8220;<em>quantum satis<\/em>&#8221; que vol dir, la quantitat que calgui.<\/p>\n<p>Els productes ecol\u00f2gics processats tamb\u00e9 poden usar alguns additius, sempre que no hi hagi cap alternativa tecnol\u00f2gica que ofereixi les mateixes garanties i \/o permeti mantenir les caracter\u00edstiques espec\u00edfiques del producte.<\/p>\n<h3>Si s\u00f3n subst\u00e0ncies qu\u00edmiques, hi ha additius naturals?<\/h3>\n<p>Els additius poden ser naturals o sint\u00e8tics. Els <strong>additius naturals<\/strong> s\u00f3n aquells que s&#8217;obtenen de productes presents en la naturalesa mitjan\u00e7ant extraccions de car\u00e0cter f\u00edsic que no impliquen incorporaci\u00f3 d&#8217;altres subst\u00e0ncies no naturals. Alguns exemples s\u00f3n la pectina d&#8217;origen vegetal i l&#8217;agar obtingut d&#8217;algues, utilitzats com espessidors, gelificants i estabilitzants. I es consideren <strong>additius sint\u00e8tics<\/strong> aquells obtinguts mitjan\u00e7ant l&#8217;\u00fas de productes de s\u00edntesi no presents en la naturalesa i \/o mitjan\u00e7ant operacions que suposen generar o incorporar subst\u00e0ncies no naturals. Altres estan en un estatut intermedi, per exemple, l&#8217;\u00e0cid asc\u00f2rbic o l&#8217;\u00e0cid c\u00edtric, que, encara que poden ser de s\u00edntesi, s\u00f3n mol\u00e8cules \u00e0mpliament presents en els aliments vegetals. En general, podr\u00edem dir que la majoria dels additius s\u00f3n sint\u00e8tics.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-28793\" src=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/11\/Qu\u00edmica-en-los-alimentos_2.jpg\" alt=\"Qu\u00edmica en los Alimentos I: aditivos alimentarios\" width=\"1200\" height=\"775\" srcset=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/11\/Qu\u00edmica-en-los-alimentos_2.jpg 1200w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/11\/Qu\u00edmica-en-los-alimentos_2-768x496.jpg 768w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/11\/Qu\u00edmica-en-los-alimentos_2-696x450.jpg 696w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/11\/Qu\u00edmica-en-los-alimentos_2-1068x690.jpg 1068w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/11\/Qu\u00edmica-en-los-alimentos_2-650x420.jpg 650w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<h3>Quins tipus d&#8217;additius hi ha?<\/h3>\n<p>Independentment del seu origen natural o sint\u00e8tic, els additius alimentaris es poden classificar segons la seva funci\u00f3 tecnol\u00f2gica. Les classes funcionals m\u00e9s habituals s\u00f3n:<\/p>\n<ul>\n<li><strong>Conservants<\/strong>: subst\u00e0ncies que perllonguen la vida \u00fatil dels aliments protegint-los del creixement de microorganismes pat\u00f2gens que puguin provocar intoxicacions.<\/li>\n<li><strong>Antioxidants<\/strong>: s\u00f3n les subst\u00e0ncies que impedeixen o retarden l&#8217;oxidaci\u00f3 i l&#8217;enranciment provocats per l&#8217;acci\u00f3 de l&#8217;aire o la llum. Aquests additius eviten que els processos d&#8217;oxidaci\u00f3 alterin el color, olor, sabor i fins i tot tamb\u00e9 les propietats nutricionals dels aliments.<\/li>\n<li><strong>Emulgents<\/strong>: fan possible la formaci\u00f3 d&#8217;una mescla homog\u00e8nia i estable d&#8217;ingredients que no s\u00f3n solubles entre si.<\/li>\n<li><strong> Espessidors<\/strong>: augmenten la viscositat dels aliments per garantir la seva textura ideal de consum.<\/li>\n<li><strong>Estabilitzants<\/strong> <strong>(o estabilitzador)<\/strong>: subst\u00e0ncies que possibiliten el manteniment de l&#8217;estat fisicoqu\u00edmic d&#8217;un producte alimentari, impedint la separaci\u00f3 en diferents fases de mescles com emulsions, escumes, etc.<\/li>\n<li><strong>Antiaglomerants<\/strong>: subst\u00e0ncies que redueixen la tend\u00e8ncia de les part\u00edcules d&#8217;un producte alimentari, per exemple, d&#8217;un pols o granulat, a adherir-se unes a les altres de manera que aix\u00f2 canvi\u00e9s l&#8217;aspecte del producte i fins i tot dificult\u00e9s el seu \u00fas.<\/li>\n<li><strong>Potenciadors del sabor<\/strong>: s&#8217;afegeixen als aliments per intensificar el seu sabor i \/o aroma natural.<\/li>\n<li><strong>Acidulants<\/strong>: subst\u00e0ncies que incrementen l&#8217;acidesa d&#8217;un producte alimentari i \/o li confereixen un sabor \u00e0cid.<\/li>\n<li><strong>Colorants<\/strong>: aporten color, o augmenten la seva intensitat, o tornen el color original dels productes ajudant a que aquest es mantingui durant tota la vida \u00fatil de l&#8217;aliment.<\/li>\n<li><strong>Edulcorants<\/strong>: subst\u00e0ncies que s&#8217;empren per donar un gust dol\u00e7 als aliments o en edulcorants de taula.<\/li>\n<\/ul>\n<p>I encara n\u2019hi ha m\u00e9s com gelificants, gasificants, escumants, antiescumants, enduridors, sals fundents, humectants, agents de recobriment, gasos propulsors, etc.<\/p>\n<blockquote><p>En general, podr\u00edem dir que la majoria dels additius s\u00f3n sint\u00e8tics<\/p><\/blockquote>\n<h3>Com localitzar-los en l&#8217;etiquetatge?<\/h3>\n<p>La informaci\u00f3 que han d&#8217;aportar els aliments al consumidor es regula a Europa mitjan\u00e7ant el Reglament (UE) 1169\/2011. S&#8217;hi defineix com han d&#8217;apar\u00e8ixer els additius en la llista d&#8217;ingredients, o b\u00e9 mitjan\u00e7ant la seva denominaci\u00f3 espec\u00edfica o b\u00e9 amb el n\u00famero E, per\u00f2, en qualsevol cas, sempre precedits del nom de la seva classe funcional o funci\u00f3 tecnol\u00f2gica. Per exemple, \u00abacidulant: \u00e0cid c\u00edtric\u00bb o \u00abacidulant: E-330\u00bb. D&#8217;aquesta manera com a consumidors sempre podem identificar els ingredients que s\u00f3n additius, per\u00f2 no pel nombre E, que pot no apar\u00e8ixer, sin\u00f3 per la menci\u00f3 de la classe funcional (conservant, antiaglomerant, estabilitzant, etc.).<\/p>\n<p>D&#8217;aquesta manera, el consumidor sempre tindr\u00e0 la informaci\u00f3 i la capacitat de triar sota el seu criteri en q\u00fcesti\u00f3 d&#8217;additius. I el fet que el consumidor prefereixi productes amb menys additius, motiva les empreses a innovar en tecnologies que permetin el desenvolupament d&#8217;aliments igualment segurs i atractius.<\/p>\n<p><strong>Autora:<\/strong> N\u00faria Arranz, Enginyera t\u00e8cnica industrial, Tecn\u00f2loga d&#8217;aliments | Laura I. Arranz, Farmac\u00e8utica &#8211; Nutricionista<\/p>\n<p><strong><a href=\"https:\/\/www.bioecoactual.com\/ca\/subscripcio\/\" target=\"_blank\" rel=\"noopener noreferrer\">Subscriu-te<\/a>\u00a0a la Newsletter i rep cada mes Bio Eco Actual gratis al teu correu<\/strong><\/p>\n<p><strong><em>Bio Eco Actual<\/em>,\u00a0<\/strong><em>el teu mensual 100% ecol\u00f2gic<\/em><strong><br \/>\nLlegir\u00a0<a href=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2019\/10\/BioEcoActual_Novembre_2019.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Bio Eco Actual Novembre 2019<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Qu&egrave; &eacute;s un additiu?, quina funci&oacute; t&eacute; en l&rsquo;aliment?, quina &eacute;s la seva normativa?, es pot fer un &uacute;s raonable d&rsquo;additius?, com localitzar-los en l&rsquo;etiquetatge? En la hist&ograve;ria del desenvolupament tecnol&ograve;gic i industrial, el seu &uacute;s ha perm&egrave;s que gaudim d&rsquo;una gran disponibilitat d&rsquo;aliments, tot i que actualment, la tecnologia aliment&agrave;ria est&agrave; evolucionant cap a [&hellip;]<\/p>\n","protected":false},"author":419,"featured_media":28797,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7166,7176],"tags":[],"class_list":["post-28800","post","type-post","status-publish","format-standard","has-post-thumbnail","category-nutricio","category-seguretat-alimentaria"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.0 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Qu\u00edmica en els Aliments I: additius alimentaris<\/title>\n<meta name=\"description\" content=\"Qu\u00e8 s\u00f3n els additius?, quina funci\u00f3 tenen en l&#039;aliment?, es pot 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