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Nanopartículas de prata sintetizadas a partir de extrato hidroalcoólico

Nanopartículas de prata sintetizadas a partir de extrato hidroalcoólico

          
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About the Book

Este estudo avaliou o perfil químico e a atividade antioxidante, de forma inédita, de nanopartículas de prata (AgNPs) sintetizadas a partir do extrato hidroalcoólico (EH) das sementes de Passiflora edulis Sims. O extrato hidroalcoólico foi utilizado pela técnica de maceração a frio e os constituintes químicos foram identificados por HPLC-MS. A síntese de AgNPs foi efectuada pelo método de redução de Ag+ de AgNO3 utilizando HS. As AgNPs foram caracterizadas em termos de perfil químico por espetrofotometria UV-Vis e de tamanho de partículas por DLS. A atividade antioxidante foi avaliada pelo método de descoloração do radical ABTS. O principal constituinte do HE foi a genisteína (52,28%). A banda SPR máxima centrou-se em 390 nm, indicando o pico caraterístico das AgNPs. O melhor CI50 9,23 mg L-1 para a atividade antioxidante foi obtido para AgNP pH 4. Este estudo trouxe resultados sem precedentes para AgNP's de Passiflora edulis, provando ser eficientes na atividade testada neste estudo, demonstrando também o efeito do pH nestas formulações.


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Product Details
  • ISBN-13: 9786206397991
  • Publisher: KS Omniscriptum Publishing
  • Publisher Imprint: Edicoes Nosso Conhecimento
  • Height: 229 mm
  • No of Pages: 52
  • Spine Width: 3 mm
  • Width: 152 mm
  • ISBN-10: 6206397998
  • Publisher Date: 29 Aug 2023
  • Binding: Paperback
  • Language: Portuguese
  • Returnable: N
  • Weight: 91 gr

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Nanopartículas de prata sintetizadas a partir de extrato hidroalcoólico
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