Atenção: Todas as denúncias são sigilosas e sua identidade será preservada.
Os campos nome e e-mail são de preenchimento opcional
Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.contributor | University of Brasilia, Institute of Chemistry | - |
Autor(es): dc.contributor | University of Brasilia, Institute of Chemistry | - |
Autor(es): dc.contributor | University of Brasilia, Institute of Chemistry | - |
Autor(es): dc.contributor | University of Brasilia, Institute of Chemistry | - |
Autor(es): dc.contributor | University of Brasilia, Institute of Chemistry | - |
Autor(es): dc.contributor | University of Brasilia, Institute of Chemistry | - |
Autor(es): dc.contributor | University of Brasilia, Institute of Chemistry | - |
Autor(es): dc.creator | Dourado, Camila Santos | - |
Autor(es): dc.creator | Domingues, Izabella Fernanda F. | - |
Autor(es): dc.creator | Magalhães, Laiz de Oliveira | - |
Autor(es): dc.creator | Casarin, Fabiana | - |
Autor(es): dc.creator | Ribeiro, Millene Lopes | - |
Autor(es): dc.creator | Braga, Jez Willian Batista | - |
Autor(es): dc.creator | Dias, Ana Cristi Basile | - |
Data de aceite: dc.date.accessioned | 2024-07-22T12:08:37Z | - |
Data de disponibilização: dc.date.available | 2024-07-22T12:08:37Z | - |
Data de envio: dc.date.issued | 2023-10-16 | - |
Data de envio: dc.date.issued | 2023-10-16 | - |
Data de envio: dc.date.issued | 2021-07-30 | - |
Fonte completa do material: dc.identifier | http://repositorio2.unb.br/jspui/handle/10482/46696 | - |
Fonte completa do material: dc.identifier | https://doi.org/10.1016/j.foodchem.2021.130732 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/capes/796981 | - |
Descrição: dc.description | Saccharin was determined based on a new molecularly imprinted solid-phase extraction (MISPE) procedure. The polymer was synthesized with a hybrid monomer of metacrylic acid and 3-amino propril tetraethoxysilane and saccharin as template. After the synthesis, the saccharin removal from the MIP was verified by the UV analysis of the solutions used in the template removal procedure, as well as by the direct MIP analysis using FTIR hyper- spectral image and chemometrics. The residual saccharin concentrations observed in the image analysis revealed a narrow concentration distribution consistent with a homogenous material. The MISPE was performed with homemade cartridges containing 200 mg of the MIP. The results obtained with standards and diet tea samples confirmed high affinity, adsorption capacity and selectivity of the MIP. The MISPE cartridge exhibited recoveries of 100 ± 3% in six extraction cycles. The diet tea analysis showed a significant reduction of the interferences, which can considerable simplifies the HPLC-UV analysis. | - |
Descrição: dc.description | Instituto de Química (IQ) | - |
Idioma: dc.language | en | - |
Publicador: dc.publisher | Elsevier Ltd. | - |
Relação: dc.relation | https://www.sciencedirect.com/science/article/pii/S0308814621017386?via%3Dihub | - |
Direitos: dc.rights | Acesso Restrito | - |
Palavras-chave: dc.subject | Sacarina | - |
Palavras-chave: dc.subject | Polímeros molecularmente impressos (MIPs) | - |
Palavras-chave: dc.subject | Chá | - |
Título: dc.title | Optimization of a saccharin molecularly imprinted solid-phase extraction procedure and evaluation by MIR hyperspectral imaging for analysis of diet tea by HPLC | - |
Aparece nas coleções: | Repositório Institucional – UNB |
O Portal eduCAPES é oferecido ao usuário, condicionado à aceitação dos termos, condições e avisos contidos aqui e sem modificações. A CAPES poderá modificar o conteúdo ou formato deste site ou acabar com a sua operação ou suas ferramentas a seu critério único e sem aviso prévio. Ao acessar este portal, você, usuário pessoa física ou jurídica, se declara compreender e aceitar as condições aqui estabelecidas, da seguinte forma: