<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2183-5985</journal-id>
<journal-title><![CDATA[Acta Portuguesa de Nutrição]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Port Nutr]]></abbrev-journal-title>
<issn>2183-5985</issn>
<publisher>
<publisher-name><![CDATA[Associação Portuguesa de Nutrição]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2183-59852020000300010</article-id>
<article-id pub-id-type="doi">10.21011/apn.2020.2210</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Arsénio: Um potencial tóxico para o consumidor das Algas Nori?]]></article-title>
<article-title xml:lang="en"><![CDATA[Arsenic: a toxic potential of Nori seaweed?]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lúcio]]></surname>
<given-names><![CDATA[Beatriz]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carvalho]]></surname>
<given-names><![CDATA[Eduarda]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernandes]]></surname>
<given-names><![CDATA[Joana]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Melo]]></surname>
<given-names><![CDATA[Rafaela]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Baltazar]]></surname>
<given-names><![CDATA[Ana Lúcia]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Instituto Politécnico de Coimbra Escola Superior de Tecnologia da Saúde ]]></institution>
<addr-line><![CDATA[Coimbra ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Instituto Politécnico de Coimbra Escola Superior de Tecnologia da Saúde Departamento de Dietética e Nutrição]]></institution>
<addr-line><![CDATA[Coimbra ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>31</day>
<month>07</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>31</day>
<month>07</month>
<year>2020</year>
</pub-date>
<numero>22</numero>
<fpage>52</fpage>
<lpage>54</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2183-59852020000300010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2183-59852020000300010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2183-59852020000300010&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[As algas são uma fonte de novos compostos bioativos, como alguns polissacarídeos, que não são encontrados em plantas terrestres, que podem conferir propriedades benéficas para a saúde. Segundo os autores Desideri, Mac Minagail e Zhao YF sabe-se que as algas marinhas contêm altos níveis de arsénio, em diferentes formas químicas. O principal objetivo desta revisão da literatura é avaliar os níveis de toxicidade do arsénio, isto é, a quantidade mínima que induz uma reação adversa na saúde do consumidor da espécie de algas Porphyra. A elaboração deste artigo foi feita com base numa revisão da literatura nas bases de pesquisa científica “Science Direct” e “Google Académico”. O arsénio inorgânico, que apresenta toxicidade, foi detetado em concentrações elevadas apenas nas algas hijiki (Sargassum fusiforme), sendo que as algas Nori não apresentaram valores significativos deste elemento (19,2± 8,4 mg/kg). Conclui-se que nas algas Nori, quando consumidas com moderação (não excedendo as 12 g/dia), a concentração de arsénio inorgânico não é muito elevada, pelo que não é considerada tóxica para os consumidores.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Seaweed is a source of new bioactive compounds, such as some polysaccharides, which are not found in terrestrial plants and can confer beneficial health properties. According to the authors Desideri, Mac Minagail and Zhao YF, it is known to contain high levels of arsenic in different chemical forms. The main aim of this literature review is to assess the levels of toxicity of arsenic, that is, the minimum amount that induces an adverse reaction on the health of the consumer of the Porphyra algae species. The preparation of this article was base on a literature review on the scientific research bases "Science Direct" and "Google Scholar". Inorganic arsenic, which has toxicity, was detected in high concentrations only in hijiki algae (Sargassum fusiforme), and Nori did not present significant values for this elemento (19.2± 8.4 mg/kg). Nori algae when consumed in moderation (not exceeding 12 g/day) the concentration of inorganic arsenic is not very high, so it is not considered toxic for consumers.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Algas Nori]]></kwd>
<kwd lng="pt"><![CDATA[Arsénio]]></kwd>
<kwd lng="pt"><![CDATA[Arsénio inorgânico]]></kwd>
<kwd lng="pt"><![CDATA[Saúde]]></kwd>
<kwd lng="pt"><![CDATA[Toxicidade]]></kwd>
<kwd lng="en"><![CDATA[Seaweed Nori]]></kwd>
<kwd lng="en"><![CDATA[Arsenic]]></kwd>
<kwd lng="en"><![CDATA[Inorganic arsenic]]></kwd>
<kwd lng="en"><![CDATA[Health]]></kwd>
<kwd lng="en"><![CDATA[Toxicity]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"><b>ARTIGO DE REVIS&Atilde;O</b></p>     <p>     <p><b><font face="" size="4">Ars&eacute;nio: Um potencial t&oacute;xico para o consumidor das Algas Nori?</font></b></p>     <p><strong>Arsenic: a toxic potential of Nori seaweed?</strong></p>     <p><strong>Beatriz L&uacute;cio<sup>1</sup>*; Eduarda Carvalho<sup>1</sup>; Joana Fernandes<sup>1</sup>; Rafaela Melo<sup>1</sup>; Ana L&uacute;cia Baltazar<sup>2</sup></strong></p>     <p><sup>1</sup>Escola Superior de Tecnologia da Sa&uacute;de de Coimbra do Instituto Polit&eacute;cnico de Coimbra, Rua 5 de Outubro - SM Bispo, Apartado 7006, 3046-854 Coimbra, Portugal</p>     <p><sup>2</sup>Departamento de Diet&eacute;tica e Nutri&ccedil;&atilde;o, Escola Superior de Tecnologia da Sa&uacute;de de Coimbra do Instituto Polit&eacute;cnico de Coimbra, Rua 5 de Outubro - SM Bispo, Apartado 7006, 3046-854 Coimbra, Portugal</p> <a href="#c0">Endere&#231;o para correspond&#234;ncia</a><a name="topc0"></a>     <p></p>     <p>&nbsp;</p>     <p><strong>RESUMO</strong></p>     ]]></body>
<body><![CDATA[<p>As algas s&atilde;o uma fonte de novos compostos bioativos, como alguns polissacar&iacute;deos, que n&atilde;o s&atilde;o encontrados em plantas terrestres, que podem conferir propriedades ben&eacute;ficas para a sa&uacute;de. Segundo os autores Desideri, Mac Minagail e Zhao YF sabe-se que as algas marinhas cont&ecirc;m altos n&iacute;veis de ars&eacute;nio, em diferentes formas qu&iacute;micas.</p>     <p>O principal objetivo desta revis&atilde;o da literatura &eacute; avaliar os n&iacute;veis de toxicidade do ars&eacute;nio, isto &eacute;, a quantidade m&iacute;nima que induz uma rea&ccedil;&atilde;o adversa na sa&uacute;de do consumidor da esp&eacute;cie de algas Porphyra.</p>     <p>A elabora&ccedil;&atilde;o deste artigo foi feita com base numa revis&atilde;o da literatura nas bases de pesquisa cient&iacute;fica &ldquo;Science Direct&rdquo; e &ldquo;Google Acad&eacute;mico&rdquo;.</p>     <p>O ars&eacute;nio inorg&acirc;nico, que apresenta toxicidade, foi detetado em concentra&ccedil;&otilde;es elevadas apenas nas algas hijiki (Sargassum fusiforme), sendo que as algas Nori n&atilde;o apresentaram valores significativos deste elemento (19,2&plusmn; 8,4 mg/kg).</p>     <p>Conclui-se que nas algas Nori, quando consumidas com modera&ccedil;&atilde;o (n&atilde;o excedendo as 12 g/dia), a concentra&ccedil;&atilde;o de ars&eacute;nio inorg&acirc;nico n&atilde;o &eacute; muito elevada, pelo que n&atilde;o &eacute; considerada t&oacute;xica para os consumidores.</p>     <p>&nbsp;</p>     <p><strong>Palavras-chave</strong></p>     <p>Algas Nori, Ars&eacute;nio, Ars&eacute;nio inorg&acirc;nico, Sa&uacute;de, Toxicidade</p>     <p>&nbsp;</p> <hr>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><strong>ABSTRACT</strong></p>     <p>Seaweed is a source of new bioactive compounds, such as some polysaccharides, which are not found in terrestrial plants and can confer beneficial health properties. According to the authors Desideri, Mac Minagail and Zhao YF, it is known to contain high levels of arsenic in different chemical forms.</p>     <p>The main aim of this literature review is to assess the levels of toxicity of arsenic, that is, the minimum amount that induces an adverse reaction on the health of the consumer of the Porphyra algae species.</p>     <p>The preparation of this article was base on a literature review on the scientific research bases "Science Direct" and "Google Scholar".</p>     <p>Inorganic arsenic, which has toxicity, was detected in high concentrations only in hijiki algae (Sargassum fusiforme), and Nori did not present significant values for this elemento (19.2&plusmn; 8.4 mg/kg).</p>     <p>&nbsp;</p>     <p>Nori algae when consumed in moderation (not exceeding 12 g/day) the concentration of inorganic arsenic is not very high, so it is not considered toxic for consumers.</p>     <p>&nbsp;</p>     <p><strong>KEYWORDS</strong></p>     <p>Seaweed Nori, Arsenic, Inorganic arsenic, Health, Toxicity</p>     ]]></body>
<body><![CDATA[<p>&nbsp;</p> <hr>     <p>&nbsp;</p>     <p><strong>INTRODU&Ccedil;&Atilde;O</strong></p>     <p>As algas marinhas s&atilde;o frutos do mar consumidos maioritariamente nos pa&iacute;ses asi&aacute;ticos (1). Na Europa e em muitos pa&iacute;ses ocidentais, o uso de algas para fins cosm&eacute;ticos e m&eacute;dicos aumentou recentemente (2). As algas s&atilde;o uma fonte de novos compostos bioativos, como alguns polissacar&iacute;deos (polissacar&iacute;deos estruturais da parede celular, fucoidanas, xilanas, ulvanas, de armazenamento) (3), que n&atilde;o s&atilde;o encontrados em plantas terrestres, que podem conferir propriedades ben&eacute;ficas para a sa&uacute;de, nomeadamente no controlo de peso, s&iacute;ndrome metab&oacute;lica, diabetes tipo II e doen&ccedil;as do trato digestivo (4, 5).</p>     <p>A par do crescente consumo das algas processadas, a seguran&ccedil;a tornou-se uma preocupa&ccedil;&atilde;o (6) uma vez que s&atilde;o uma importante fonte de exposi&ccedil;&atilde;o a elementos n&atilde;o essenciais ou t&oacute;xicos, como o c&aacute;dmio (Cd), merc&uacute;rio (Hg), chumbo (Pb), antim&oacute;nio (Sb) e ars&eacute;nio (As) (7). Estes elementos s&atilde;o componentes naturais da crosta terrestre e dos sistemas biol&oacute;gicos pelo que a capacidade das algas para acumular metais pesados depende da biodisponibilidade destes na &aacute;gua circundante (2, 8, 9).</p>     <p>Sabe-se que as algas geralmente consumidas podem conter altos n&iacute;veis de ars&eacute;nio, sob diferentes formas, esp&eacute;cies de ars&eacute;nio inorg&acirc;nico, como As (III) ou As (V) (10), ou ars&eacute;nio org&acirc;nico, como arsenobeta&iacute;na e arseno-a&ccedil;&uacute;cares (AsSug) (11). O ars&eacute;nio inorg&acirc;nico n&atilde;o &eacute; ben&eacute;fico para a sa&uacute;de, uma vez que produz carcinog&eacute;nese do f&iacute;gado, rim, bexiga e pele e, portanto, a sua concentra&ccedil;&atilde;o na dieta deve ser o mais baixa poss&iacute;vel (11, 12). A maioria dos organismos aqu&aacute;ticos tem a capacidade de metabolizar as formas inorg&acirc;nicas, para as menos t&oacute;xicas tais como dimetilarsinato (DMA) e arsenobeta&iacute;na (13, 14). No entanto, certas algas n&atilde;o usam esse processo de convers&atilde;o metab&oacute;lica e passam a ter propor&ccedil;&otilde;es significativas de formas inorg&acirc;nicas (13, 15&ndash;17).</p>     <p>Este estudo incidiu numa cultura de algas espec&iacute;fica, a Porphyra, popularmente conhecida como Nori. Esta possui um teor de prote&iacute;na equipar&aacute;vel a leguminosas, vitamina C, minerais, oligoelementos, bem como polissacar&iacute;deos bioativos (porfirina), polifen&oacute;is, clorofila e caroten&oacute;ides (18&ndash;20).</p>     <p>Dada a import&acirc;ncia desta tem&aacute;tica, o principal objetivo desta revis&atilde;o da literatura &eacute; avaliar os n&iacute;veis de toxicidade do ars&eacute;nio nas algas Nori, para os consumidores. Neste sentido, &eacute; fulcral avaliar a concentra&ccedil;&atilde;o de ars&eacute;nio nas algas Nori.</p>     <p>&nbsp;</p>     <p><strong>METODOLOGIA</strong></p>     ]]></body>
<body><![CDATA[<p>A elabora&ccedil;&atilde;o deste artigo foi feita com base numa revis&atilde;o da literatura nas bases de pesquisa cient&iacute;fica &ldquo;Science Direct&rdquo; e &ldquo;Google Acad&eacute;mico&rdquo;. Cruzaram-se as palavras-chave: &ldquo;seaweed Nori&rdquo;, &ldquo;toxicity&rdquo;, &ldquo;health&rdquo; e &ldquo;inorganic arsenic&rdquo;, obtendo um total de 356 artigos datados de 2000 at&eacute; ao presente. Apesar deste crit&eacute;rio, abriram-se duas exce&ccedil;&otilde;es, considerando artigos de 1993 e 1988, uma vez que estes demonstraram ter informa&ccedil;&otilde;es cruciais para a elabora&ccedil;&atilde;o deste trabalho.</p>     <p>Selecionaram-se 48 artigos a partir da leitura dos t&iacute;tulos e dos resumos, considerando aqueles que avaliavam a concentra&ccedil;&atilde;o de ars&eacute;nio nas algas Nori e o seu n&iacute;vel de toxicidade para os consumidores. Ap&oacute;s a leitura na &iacute;ntegra dos mesmos, utilizaram-se 26 artigos para a elabora&ccedil;&atilde;o desta revis&atilde;o, de acordo com a sua pertin&ecirc;ncia para a tem&aacute;tica.</p>     <p>&nbsp;</p>     <p><strong>Constitui&ccedil;&atilde;o das Algas Nori</strong></p>     <p>As algas Nori apresentam uma elevada concentra&ccedil;&atilde;o de minerais na sua constitui&ccedil;&atilde;o. A n&iacute;vel nutricional esta alga &eacute; fonte hidratos de carbono, prote&iacute;nas, fibra, vitamina C, minerais, polissacar&iacute;deos bioativos, polifen&oacute;is, clorofila e carotenoides e &aacute;cidos gordos (18) (<a href ="/img/revistas/apn/n22/n22a10t1.jpg">Tabela 1</a>).</p>     
<p>&nbsp;</p>     <p><strong>Ars&eacute;nio nas Algas Marinhas</strong></p>     <p>Relativamente &agrave; concentra&ccedil;&atilde;o de ars&eacute;nio, esta varia consoante os diferentes locais onde as algas Nori se desenvolvem (11, 21), pelo que, foram realizados diferentes estudos para determinar esta concentra&ccedil;&atilde;o. Sartal et al. determinaram 43,7 &plusmn; 0,8 mg/kg de ars&eacute;nio total (16) e Almela et al. 23,7&plusmn;0,5 mg/kg de peso seco de ars&eacute;nio total para a alga Nori (22).</p>     <p>O conte&uacute;do total de ars&eacute;nio descrito na bibliografia para algas comest&iacute;veis varia entre 2,0 e 172 mg/kg (22). Os produtos de algas castanhas (hijiki, kombu, wakame, arame) apresentaram concentra&ccedil;&otilde;es mais altas de ars&eacute;nio do que as algas vermelhas (como a Nori) (23), que apresenta 19,2 &plusmn; 8,4 mg/kg, sendo que a hijiki mant&eacute;m as concentra&ccedil;&otilde;es mais altas (83,7 mg/kg) (15). Assim, o consumo de 3g de algas por dia corresponderia a uma ingest&atilde;o total de ars&eacute;nio entre 7 a 423 &micro;g/dia (22).</p>     <p>O ars&eacute;nio inorg&acirc;nico, que apresenta toxicidade, foi detetado em concentra&ccedil;&otilde;es elevadas apenas nas algas hijiki, sendo que as algas Nori n&atilde;o apresentaram valores significativo deste elemento (13). Almela et al. determinaram 0,57&plusmn;0,04 mg/kg de peso seco de ars&eacute;nio inorg&acirc;nico para a alga Nori (22) (<a href ="/img/revistas/apn/n22/n22a10t2.jpg">Tabela 2</a>).</p>     
]]></body>
<body><![CDATA[<p>De acordo com a Organiza&ccedil;&atilde;o Mundial da Sa&uacute;de (OMS), a ingest&atilde;o di&aacute;ria toler&aacute;vel de ars&eacute;nio inorg&acirc;nico, para um peso corporal de 68 kg, &eacute; 0,146 mg/dia (24, 25). Neste sentido, tanto o consumo m&eacute;dio (3 g/dia) como o consumo m&aacute;ximo (12 g/dia) de alga Nori d&atilde;o origem a n&iacute;veis de ingest&atilde;o inorg&acirc;nica inferiores &agrave; ingest&atilde;o di&aacute;ria toler&aacute;vel (22).</p>     <p>Apesar da alga Nori ser consumida maioritariamente em cru, a quantidade de ars&eacute;nio total diminui durante o processo de cozimento (16).</p>     <p>&nbsp;</p>     <p><strong>Legisla&ccedil;&atilde;o Sobre o Uso de Algas Marinhas para Consumo Humano</strong></p>     <p>Na Comunidade Europeia, o Regulamento (CE) n.&ordm; 466/2001, de 8 de mar&ccedil;o de 2001, estipula o teor m&aacute;ximo de certos contaminantes nos produtos aliment&iacute;cios, no entanto n&atilde;o inclui as algas.</p>     <p>Fran&ccedil;a foi o primeiro pa&iacute;s europeu a estabelecer regulamentos sobre o uso de algas marinhas para consumo humano como alimentos n&atilde;o tradicionais. Atualmente, doze macroalgas (seis algas castanhas, cinco algas vermelhas, duas algas verdes) e duas microalgas s&atilde;o autorizadas. Essas algas devem atender &agrave;s normas de seguran&ccedil;a em termos de crit&eacute;rios toxicol&oacute;gicos e bacteriol&oacute;gicos (2, 3, 22, 26) .</p>     <p>&nbsp;</p>     <p><strong>AN&Aacute;LISE CR&Iacute;TICA</strong></p>     <p>Com o crescente consumo de algas marinhas, nomeadamente as Nori, revelou-se ser necess&aacute;rio a realiza&ccedil;&atilde;o de mais estudos sobre a constitui&ccedil;&atilde;o da mesma, para garantir a seguran&ccedil;a dos consumidores. Do ponto de vista nutricional estas algas s&atilde;o consideradas interessantes, dados os benef&iacute;cios que constituem para a sa&uacute;de.</p>     <p>No entanto, as algas podem apresentar tamb&eacute;m elevadas concentra&ccedil;&otilde;es de elementos t&oacute;xicos, de entre os quais o ars&eacute;nio (As) que, quando se encontra na sua forma inorg&acirc;nica e em elevadas concentra&ccedil;&otilde;es, pode ter efeitos prejudiciais para a sa&uacute;de, podendo induzir carcinog&eacute;nese do f&iacute;gado, rim, bexiga e pele.</p>     ]]></body>
<body><![CDATA[<p>Como se pode constatar pela an&aacute;lise da literatura apresentada anteriormente, a concentra&ccedil;&atilde;o de ars&eacute;nio total, org&acirc;nico e inorg&acirc;nico n&atilde;o &eacute; consensual. Esta varia consoante o local de desenvolvimento das algas, bem como a sua capacidade para acumular metais pesados, dependente da biodisponibilidade destes na &aacute;gua circundante. Al&eacute;m disso, considera-se que a discrep&acirc;ncia dos valores acima mencionados tamb&eacute;m pode ser justificada pelas diversas metodologias aplicadas por cada autor nas respetivas investiga&ccedil;&otilde;es. A confe&ccedil;&atilde;o das algas pode ter efeito na quantidade de ars&eacute;nio total, sendo que esta diminui como resultado deste processo.</p>     <p>Ao analisar, de forma pormenorizada, as concentra&ccedil;&otilde;es de ars&eacute;nio nas v&aacute;rias esp&eacute;cies de algas, &eacute; evidente que as castanhas s&atilde;o as que apresentam valores mais altos, comparativamente com as vermelhas. Uma vez que as algas Nori se enquadram nesta &uacute;ltima categoria, a concentra&ccedil;&atilde;o deste elemento nas mesmas, encontra-se dentro do n&iacute;vel de ingest&atilde;o di&aacute;ria toler&aacute;vel estabelecido pela OMS (0,146mg/dia para um peso corporal de 68 kg). &Agrave; semelhan&ccedil;a de Fran&ccedil;a, torna-se fulcral desenvolver um regulamento na Comunidade Europeia, que estipule o teor m&aacute;ximo de contaminantes presentes nas algas, uma vez que estas ainda n&atilde;o est&atilde;o inclu&iacute;das no Regulamento (CE) n.&ordm; 466/2001 e podem constituir um potencial risco para a sa&uacute;de humana.</p>     <p>&nbsp;</p>     <p><strong>CONCLUS&Otilde;ES</strong></p>     <p>Em suma, atribui-se elevada import&acirc;ncia ao estudo da composi&ccedil;&atilde;o das algas marinhas comest&iacute;veis, nomeadamente da concentra&ccedil;&atilde;o de elementos essenciais e t&oacute;xicos, no sentido de avaliar potenciais efeitos na sa&uacute;de da popula&ccedil;&atilde;o.</p>     <p>Assim, conclui-se que as algas Nori quando consumidas com modera&ccedil;&atilde;o (n&atilde;o excedendo as 12 g/dia) a concentra&ccedil;&atilde;o de ars&eacute;nio inorg&acirc;nico n&atilde;o &eacute; muito elevada, pelo que n&atilde;o &eacute; considerada t&oacute;xica para os consumidores.</p>     <p>Com o aumento significativo do consumo destas algas, considera-se importante adotar o exemplo de Fran&ccedil;a em toda a Comunidade Europeia, estabelecendo um regulamento sobre o uso de algas marinhas para consumo humano.</p>     <p>&nbsp;</p>     <p><strong>REFER&Ecirc;NCIAS BIBLIOGR&Aacute;FICAS</strong></p> <ol>       <li>Higa T, Kuniyoshi M. Toxins associated with medicinal and edible seaweeds. J Toxicol - Toxin Rev. 2000;19(2):119&ndash;37.</li>       ]]></body>
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<body><![CDATA[<li>WHO. Exposure to Arsenic: A Major Public Health Concern. Agriculture [Internet]. 2010;5. Available from: <a href="http://www.who.int/ipcs/features/arsenic.pdf?ua=1"target="_blank">http://www.who.int/ipcs/features/arsenic.pdf?ua=1</a>. Acessed at: 05/03/2020.</li>       <li>Rose M, Lewis J, Langford N, Baxter M, Origgi S, Barber M, et al. Arsenic in seaweed-Forms, concentration and dietary exposure. Food Chem Toxicol. 2007;45(7):1263&ndash;7.</li>       <li>International Agency for Research on Cancer(IARC). Arsenic and Arsenic Compounds Monograph. IARC Monogr Eval Carcinog Risks Humans [Internet]. 2012;100C:41&ndash;93. Available from: <a href="http://monographs.iarc.fr/ENG/Monographs/vol100C/mono100C-6.pdf"target="_blank">monographs.iarc.fr/ENG/Monographs/vol100C/mono100C-6.pdf</a> .</li>       <li>Taylor VF, Li Z, Sayarath V, Palys TJ, Morse KR, Scholz-Bright RA, et al. Distinct arsenic metabolites following seaweed consumption in humans. Sci Rep [Internet]. 2017;7(1):1&ndash;9. Available from: <a href="http://dx.doi.org/10.1038/s41598-017-03883-7"target="_blank">http://dx.doi.org/10.1038/s41598-017-03883-7</a>.</li>       <li>Garc&iacute;a Sartal C, Barciela-Alonso M del C, Bermejo-Barrera P. Effect of the cooking procedure on the arsenic speciation in the bioavailable (dialyzable) fraction from seaweed. Microchem J [Internet]. 2012;105:65&ndash;71. Available from: <a href="http://dx.doi.org/10.1016/j.microc.2012.08.001"target="_blank">http://dx.doi.org/10.1016/j.microc.2012.08.001</a>.</li>       <li>Norman JA, Pickford CJ, Sanders TW, Waller M. Human intake of arsenic and iodine from seaweed-based food supplements and health foods available in the UK. Food Addit Contam. 1988;5(1):103&ndash;9.</li>       <li>Kumar MS, Sharma SA. Toxicological effects of marine seaweeds: a cautious insight for human consumption. Crit Rev Food Sci Nutr [Internet]. 2020;0(0):1&ndash;22. Available from: <a href="https://doi.org/10.1080/10408398.2020.1738334"target="_blank">https://doi.org/10.1080/10408398.2020.1738334</a>.</li>       <li>Hong DD, Hien HM, Son PN. Seaweeds from Vietnam used for functional food, medicine and biofertilizer. J Appl Phycol. 2007;19(6):817&ndash;26.</li>       <li>Taboada MC, Mill&aacute;n R, Miguez MI. Nutritional value of the marine algae wakame (Undaria pinnatifida) and nori (Porphyra purpurea) as food supplements. J Appl Phycol. 2013;25(5):1271&ndash;6.</li>       <li>Chen Q, Pan XD, Huang BF, Han JL. Distribution of metals and metalloids in dried seaweeds and health risk to population in southeastern China. Sci Rep [Internet]. 2018;8(1):1&ndash;7. Available from: <a href="http://dx.doi.org/10.1038/s41598-018-21732-z"target="_blank">http://dx.doi.org/10.1038/s41598-018-21732-z</a>.</li>       ]]></body>
<body><![CDATA[<li>Almela C, Algora S, Benito V, Clemente MJ, Devesa V, S&uacute;&ntilde;er MA, et al. Heavy metal, total arsenic, and inorganic arsenic contents of algae food products. J Agric Food Chem. 2002;50(4):918&ndash;23.</li>       <li>Ma Z, Lin L, Wu M, Yu H, Shang T, Zhang T, et al. Total and inorganic arsenic contents in seaweeds: Absorption, accumulation, transformation and toxicity. Aquaculture [Internet]. 2018;497:49&ndash;55. Available from: <a href="https://doi.org/10.1016/j.aquaculture.2018.07.040"target="_blank">https://doi.org/10.1016/j.aquaculture.2018.07.040</a>.</li>       <li>Bouga M, Combet E. Emergence of Seaweed and Seaweed-Containing Foods in the UK: Focus on Labeling, Iodine Content, Toxicity and Nutrition. Foods. 2015;4(4):240&ndash;53.</li>       <li>Cheng JS, Li JH, Jiang HF, Ouyang XY. The solvent effect on the chemoselectivity of palladium-catalyzed oligomerization of 3, 3-dimethyl-1-butyne. Chinese Chem Lett. 2003;14(9):966&ndash;8.</li>       <li>Besada V, Andrade JM, Schultze F, Gonz&aacute;lez JJ. Heavy metals in edible seaweeds commercialised for human consumption. J Mar Syst [Internet]. 2009;75(1&ndash;2):305&ndash;13. Available from: <a href="http://dx.doi.org/10.1016/j.jmarsys.2008.10.010"target="_blank">http://dx.doi.org/10.1016/j.jmarsys.2008.10.010</a>.</li>     </ol>     <p></p>     <p>&nbsp;</p>     <p> <b><a href="#topc0">Endere&#231;o para correspond&#234;ncia</a><a name="c0"></a></b>     <p>Beatriz L&uacute;cio</p>     ]]></body>
<body><![CDATA[<p>Rua S&atilde;o Sebasti&atilde;o, n. 27, Campelos, Portugal</p>     <p><a href="mailto:beatrizsslucio@gmail.com">beatrizsslucio@gmail.com</a></p>     <p>&nbsp;</p>     <p>Recebido a 14 de maio de 2020</p>     <p>Aceite a 28 de setembro de 2020</p>      ]]></body><back>
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