{"id":180825,"date":"2025-07-08T13:02:57","date_gmt":"2025-07-08T11:02:57","guid":{"rendered":"https:\/\/www.ainia.com\/?p=180825"},"modified":"2025-07-08T13:04:09","modified_gmt":"2025-07-08T11:04:09","slug":"aplicacoes-alimentares-do-supercritical-co2","status":"publish","type":"post","link":"https:\/\/www.ainia.com\/pt\/ainia-news\/aplicacoes-alimentares-do-supercritical-co2\/","title":{"rendered":"Aplica\u00e7\u00f5es Alimentares do Supercritical CO2"},"content":{"rendered":"<html><body><div class=\"wpb-content-wrapper\"><p data-pm-slice=\"1 1 []\">[vc_row][vc_column][vc_column_text]Dadas as vantagens inerentes desta tecnologia, \u00e9 evidente o elevado potencial do <strong>Supercritical CO2 no setor alimentar<\/strong>. Entre as suas aplica\u00e7\u00f5es para a ind\u00fastria encontram-se processos de extra\u00e7\u00e3o, processos de fracionamento ou processos de remo\u00e7\u00e3o de compostos indesejados (desaromatiza\u00e7\u00e3o e descontamina\u00e7\u00e3o). Abaixo, resumimos as aplica\u00e7\u00f5es mais significativas.<\/p>\n<h2><strong>Vantagens associadas aos processos de tratamento com Supercritical CO2 no processamento alimentar<\/strong><\/h2>\n<p>A fabrica\u00e7\u00e3o de produtos alimentares envolve geralmente uma fase de separa\u00e7\u00e3o para recuperar os componentes de interesse a partir de uma mistura complexa. Por vezes, s\u00e3o necess\u00e1rios tratamentos de separa\u00e7\u00e3o para eliminar compostos indesejados, como gorduras ou contaminantes como pesticidas.<\/p>\n<p>Frequentemente, essas etapas de separa\u00e7\u00e3o utilizam solventes org\u00e2nicos. No entanto, devido aos inconvenientes associados ao seu manuseamento, a legisla\u00e7\u00e3o est\u00e1 a limitar progressivamente o seu uso no processamento de alimentos, bem como os limites m\u00e1ximos toler\u00e1veis nos produtos finais.<\/p>\n<p>Al\u00e9m disso, a extra\u00e7\u00e3o com solventes org\u00e2nicos muitas vezes requer temperaturas elevadas, o que pode degradar certos ingredientes ativos. Tamb\u00e9m s\u00e3o necess\u00e1rias etapas subsequentes de purifica\u00e7\u00e3o para eliminar os res\u00edduos de solventes.<\/p>\n<p>Face a estas considera\u00e7\u00f5es, o uso do <strong><a href=\"https:\/\/www.ainia.com\/pt\/extracao-e-separacao-com-co2-supercritico\/\">Supercritical CO2<\/a> <\/strong>surge como uma alternativa adequada, com vantagens como alta disponibilidade, baixo custo, n\u00e3o toxicidade, n\u00e3o inflamabilidade e n\u00e3o explosividade. Tanto o extrato como a matriz inicial ficam livres de res\u00edduos de solventes, e o processo evita temperaturas elevadas.<\/p>\n<h2><strong>Tipos de aplica\u00e7\u00f5es alimentares e exemplos<\/strong><\/h2>\n<p>Gra\u00e7as \u00e0s vantagens j\u00e1 mencionadas, \u00e9<strong> evidente o elevado potencial do Supercritical CO2 no setor alimentar<\/strong>. Entre as suas aplica\u00e7\u00f5es est\u00e3o processos de extra\u00e7\u00e3o, fracionamento e remo\u00e7\u00e3o de compostos indesejados.<\/p>\n<p>Exemplos de aplica\u00e7\u00f5es alimentares incluem:<\/p>\n<ul data-spread=\"true\">\n<li><strong>Descafeina\u00e7\u00e3o de caf\u00e9 e ch\u00e1:<\/strong> O processo recupera a cafe\u00edna numa solu\u00e7\u00e3o aquosa que pode ser concentrada e utilizada em aplica\u00e7\u00f5es alimentares, farmac\u00eauticas ou cosm\u00e9ticas. A extra\u00e7\u00e3o selectiva remove at\u00e9 99% da cafe\u00edna, mantendo o aroma.<\/li>\n<li><strong>Remo\u00e7\u00e3o de gordura em alimentos:<\/strong> Como a remo\u00e7\u00e3o de gordura do cacau, onde o Supercritical CO2 extrai a gordura at\u00e9 n\u00edveis inferiores a 0,5%. Obt\u00eam-se cacau desengordurado e manteiga de cacau. Outros exemplos incluem nozes e cereais.<\/li>\n<li><strong>Obten\u00e7\u00e3o de extratos vegetais e arom\u00e1ticos:<\/strong> Empresas como a FLAVEX NATUREXTRACTE (Alemanha) produzem extratos bot\u00e2nicos h\u00e1 mais de 25 anos, com destaque para gengibre, cal\u00eandula, cenoura, azeitona e pimenta.<\/li>\n<li><strong>Remo\u00e7\u00e3o de contaminantes:<\/strong> A remo\u00e7\u00e3o de pesticidas do arroz \u00e9 exemplo deste tipo de aplica\u00e7\u00e3o industrial. Em Taiwan, existe uma unidade com capacidade para tratar 90 toneladas de arroz por dia.<\/li>\n<li><strong>Extra\u00e7\u00e3o de l\u00fapulo para cerveja:<\/strong> Permite obter extratos de alta qualidade que proporcionam o aroma \u00e0 cerveja.<\/li>\n<\/ul>\n<p>Para al\u00e9m dos processos em matrizes s\u00f3lidas, o Supercritical CO2 \u00e9 tamb\u00e9m usado no fracionamento de subst\u00e2ncias l\u00edquidas em contracorrente. Aplica-se na separa\u00e7\u00e3o de \u00e1cidos gordos \u00f3mega-3 (por exemplo, de \u00f3leos de peixe), no enriquecimento de tocofer\u00f3is ou na desalcooiza\u00e7\u00e3o de bebidas como vinho, cerveja ou sidra.<\/p>\n<p>Estudos demonstram a viabilidade do Supercritical CO2 para reduzir o teor alco\u00f3lico em bebidas para menos de 0,5%, sem recurso a altas temperaturas, permitindo recuperar compostos arom\u00e1ticos extra\u00eddos com o etanol, reduzindo assim o impacto organol\u00e9ptico.<\/p>\n<p>Devido \u00e0 sua seletividade, esta tecnologia tamb\u00e9m \u00e9 usada para desengorduramento de alimentos (produtos diet\u00e9ticos, isentos de colesterol) e desodorizac\u00e3o de matrizes alimentares como alecrim ou valeriana.<\/p>\n<p>Nos \u00faltimos anos, desenvolveram-se <strong>processos n\u00e3o extrativos com Supercritical CO2<\/strong>, como impregna\u00e7\u00e3o de subst\u00e2ncias em matrizes vegetais ou materiais de embalagem e microencapsula\u00e7\u00e3o de subst\u00e2ncias. Os objetivos incluem melhorias na manipula\u00e7\u00e3o, dosagem, armazenamento ou conserva\u00e7\u00e3o.<\/p>\n<h2><strong>Aplica\u00e7\u00f5es industriais concretas no dia a dia<\/strong><\/h2>\n<p><a href=\"https:\/\/www.ainia.com\/pt\/extracao-e-separacao-com-co2-supercritico\/\"><strong>A tecnologia de fluidos supercr\u00edticos possui aplica\u00e7\u00f5es industriais<\/strong><\/a> muito amplas no setor alimentar, j\u00e1 implementadas em diversos produtos comuns. V\u00e1rias aplica\u00e7\u00f5es descritas realizam-se atualmente numa unidade industrial pioneira, especializada em processos supercr\u00edticos para produ\u00e7\u00e3o por contrato.<\/p>\n<p>Segundo Gerd Brunner, um dos principais investigadores nesta \u00e1rea, um menu di\u00e1rio pode conter v\u00e1rios alimentos processados com recurso ao Supercritical CO2. Trata-se apenas de continuar a identificar produtos onde esta tecnologia representa um salto qualitativo real.<\/p>\n<p>\u00a0<\/p>\n<\/div><\/body><\/html>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_column_text]Dadas as vantagens inerentes desta tecnologia, \u00e9 evidente o elevado potencial do Supercritical CO2 no setor alimentar. Entre as suas aplica\u00e7\u00f5es para a ind\u00fastria encontram-se processos de extra\u00e7\u00e3o, processos de fracionamento ou processos de remo\u00e7\u00e3o de compostos indesejados (desaromatiza\u00e7\u00e3o e descontamina\u00e7\u00e3o). Abaixo, resumimos as aplica\u00e7\u00f5es mais significativas. Vantagens associadas aos processos de tratamento com Supercritical [&hellip;]<\/p>\n","protected":false},"author":249,"featured_media":180818,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1963],"tags":[],"class_list":["post-180825","post","type-post","status-publish","format-standard","hentry","category-inovacao-tecnologica"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aplica\u00e7\u00f5es Alimentares do Supercritical CO2<\/title>\n<meta name=\"description\" content=\"Descobre as principais aplica\u00e7\u00f5es do Supercritical CO2 na ind\u00fastria alimentar, incluindo extra\u00e7\u00e3o, fracionamento e remo\u00e7\u00e3o de compostos indesejados.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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