Use este identificador para citar ou linkar para este item:
https://locus.ufv.br//handle/123456789/19780
Tipo: | Artigo |
Título: | Polydiacetylene/triblock copolymer nanoblend applied as a sensor for micellar casein: a thermodynamic approach |
Autor(es): | Souza, Luana Cypriano de Rezende, Jaqueline de Paula Pires, Ana Clarissa dos Santos Silva, Luis Henrique Mendes da Silva, Maria do Carmo Hespanhol da Andrade, Nélio José de Castrillon, Elkin Dario Castellon |
Abstract: | Polydiacetylene (PDA) and triblock copolymer nanoblends were synthesized to detect micellar casein (MC), the main milk protein and an indicator of milk quality. UV–Vis spectrum showed that MC induced blue-to-red transition in nanoblends. When nanoblends and MC were separated by dialysis membrane colorimetric response (CR) was similar, whereas a remarkable CR reduction was noticed after addition of dialyzed-MC, suggesting that small molecules present in MC (salts) caused PDA color change. Interaction enthalpy variation between nanoblends and MC showed an abrupt increase that coincided with MC concentration when colorimetric transition occurred. Copolymer hydrophobic/hydrophilic balance and presence of other molecules in the system affected nanoblends CR. MC salts were found to interact with nanoblends leading to color changes. MC concentration, MC salt release, copolymer hydrophobic/hydrophilic balance, and presence of other molecules in the system affected responses of the sensors. These results contribute to future applications of PDA/copolymer nanosensors to dairy models. |
Palavras-chave: | Calcium phosphate Pentacosadiynoic acid L64 F68 Interaction enthalpy Zeta potential |
Editor: | Food Chemistry |
Tipo de Acesso: | Elsevier Ltd. |
URI: | https://doi.org/10.1016/j.foodchem.2015.11.071 http://www.locus.ufv.br/handle/123456789/19780 |
Data do documento: | 15-Abr-2016 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
artigo.pdf Until 2100-12-31 | texto completo | 786,44 kB | Adobe PDF | Visualizar/Abrir Solictar uma cópia |
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.