Pesquisadores brasileiros participam do desenvolvimento de tecido capaz de eliminar o coronavírus


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Postado em 17 de junho de 2020 às 10:54



“De acordo com o estudo, produto inativa 99,9% do vírus após dois minutos de contato. Material deve ser utilizado em máscaras usadas pela população em geral e roupas hospitalares.”


Pesquisadores desenvolveram um tecido com micropartículas de prata que se mostrou capaz de inativar 99,9% da quantidade de SARS-CoV-2, vírus responsável por causar a Covid-19, após dois minutos de contato. Segundo os desenvolvedores, a tecnologia deve ser utilizada na produção de máscaras de proteção e roupas hospitalares.
O estudo foi realizado pelo Instituto de Ciências Biomédicas da Universidade de São Paulo (ICB-USP), pela Universitat Jaume I, da Espanha, pelo Centro de Desenvolvimento de Materiais Funcionais (CDMF) da Fundação de Amparo à Pesquisa do Estado de São Paulo (Fapesp) e uma Startup que já produzia tecidos que evitam a proliferação de fungos e bactérias.


“Já entramos com o pedido de depósito de patente da tecnologia e temos parcerias com duas tecelagens no Brasil que irão utilizá-la para a fabricação de máscaras de proteção e roupas hospitalares”, relata Luiz Gustavo Pagotto Simões, diretor da Nanox, startup que fez parte da descoberta.


O tecido desenvolvido pelos pesquisadores é composto por uma mistura de poliéster, algodão e dois tipos de micropartículas de prata.

Testes em laboratório

Para desenvolver a tecnologia, os pesquisadores do ICB-USP isolaram e cultivaram o SARS-CoV-2, vírus responsável por causar a Covid-19, logo no início da pandemia.Amostras do tecido com e sem micropartículas de prata foram colocadas em tubos que continham grandes quantidades do vírus. Elas foram analisadas por intervalos de tempo, dias e pesquisadores diferentes.
O estudo concluiu que nas amostras em que os tecidos com micropartículas de prata foram colocados 99,9% das cópias do novo coronavírus presentes nas células foram inativadas após dois e cinco minutos de contato. O material ainda passou por testes para avaliar o seu potencial alérgico, fotoirritante e fotossensível.
“A quantidade de vírus que colocamos nos tubos em contato com o tecido é muito superior à que uma máscara de proteção é exposta e, mesmo assim, o material foi capaz de eliminar o vírus com essa eficácia”, diz Lúcio Freitas Junior, pesquisador ICB-USP.
Os pesquisadores ainda estudam a duração do efeito antiviral do tecido, no caso da ação antibacteriana e fungicida, segundo a Startup que desenvolve o produto, a propriedade dura em torno de 30 lavagens.
“Como o material apresenta essa propriedade bactericida mesmo após 30 lavagens, provavelmente mantém a atividade antiviral por esse mesmo tempo”, afirma Luiz Gustavo Pagotto Simões, diretor da Nanox, empresa que fez parte do estudo.

The Human Security – (THSI) is a prominent Islamabad-based think-tank dedicated to advancing human security across all levels.
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The Human Security Institute (THSI) is a pioneering research, advocacy, and capacity building organization dedicated to addressing the complex and interrelated threats to human well-being in the 21st century. Founded on the principles of promoting freedom from fear, freedom from want, and freedom to live with dignity, THSI focuses on a holistic approach to security that encompasses economic, food, health, environmental, personal, community, and political dimensions.
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Environment and Climate Change are the key areas where the World is focusing to further enhance the dimensions of Human Security.
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The Human Security Institute (THSI) is a pioneering research, advocacy, and capacity building organization dedicated to addressing the complex and interrelated threats to human well-being in the 21st century. Founded on the principles of promoting freedom from fear, freedom from want, and freedom to live with dignity, THSI focuses on a holistic approach to security that encompasses economic, food, health, environmental, personal, community, and political dimensions


Through innovative research, evidence-based policy recommendations, and robust community engagement, THSI Pakistan works to tackle pressing issues such as poverty, health disparities, environmental degradation, and social injustice. By partnering with likeminded-partners we strive to implement sustainable solutions that enhance well-being and resilience.

 

THSI Pakistan is dedicated to empowering individuals, fostering inclusive development, and advocating for policies that protect and uplift the most vulnerable. Together, we aim to build a future where security is understood not merely as the absence of conflict, but as the presence of opportunity, equity, and dignity for all.

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