A molecularly imprinted polymers/carbon dots-grafted paper sensor for 3-monochloropropane-1,2-diol determination.
Food Chem
; 274: 156-161, 2019 Feb 15.
Article
em En
| MEDLINE
| ID: mdl-30372920
ABSTRACT
3-Monochloropropane-1,2-diol (3-MCPD) is a common food processing contaminant and a simple, rapid, sensitive and low cost monitoring technology is needed due to its potential carcinogenic nature. Carbon dots directly intercepted on filter paper provide high fluorescence intensity and can be adapted for use as a sensor. We synthesized a carbon dot-filter paper in combination with a molecularly imprinted polymeric film to extract 3-MCPD from samples. This grafted paper-based sensor exhibited a high adsorption capacity (68.97â¯mgâ¯g-1), an excellent selectivity (imprinting factorâ¯=â¯4.5) and a low detection limit (0.6â¯ngâ¯mL-1). Recoveries ranged from 97.2% to 105.3% with relative standard deviations <5.6%. The results obtained using this method were linearly correlated to those of the classic GC-MS method (râ¯=â¯0.998). Based on the Chinese National Standard, this study provides a novel and powerful platform for the simple, rapid, sensitive and on-site analysis of 3-MCPD in soy sauce.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Papel
/
Contaminação de Alimentos
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Alfa-Cloridrina
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Impressão Molecular
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Análise de Alimentos
Idioma:
En
Revista:
Food Chem
Ano de publicação:
2019
Tipo de documento:
Article