Rapid detection of illegal colorants on traditional Chinese pastries through mass spectrometry with an interchangeable thermal desorption electrospray ionization source.
Food Chem
; 252: 189-197, 2018 Jun 30.
Article
em En
| MEDLINE
| ID: mdl-29478531
ABSTRACT
Ambient mass spectrometry using an interchangeable thermal desorption/electrospray ionization source (TD-ESI) is a relatively new technique that has had only a limited number of applications to date. Nevertheless, this direct-analysis technique has potential for wider use in analytical chemistry (e.g., in the rapid direct detection of contaminants, residues, and adulterants on and in food) when operated in dual-working mode (pretreatment-free qualitative screening and conventional quantitative confirmation) after switching to a TD-ESI source from a conventional ESI source. Herein, we describe the benefits and challenges associated with the use of a TD-ESI source to detect adulterants on traditional Chinese pastries (TCPs), as a proof-of-concept for the detection of illegal colorants. While TD-ESI can offer direct (i.e., without any sample preparation) qualitative screening analyses for TCPs with adequate sensitivity within 30â¯s, the use of TD-ESI for semi-quantification is applicable only for homogeneous matrices (e.g., tang yuan).
Palavras-chave
Acetonitrile (PubChem CID:6342); Ammonium acetate (PubChem CID:517165); Chrysoidine (PubChem CID:10771); Colorant; Mass spectrometry; Methanol (PubChem CID:887); Phosphoric acid (PubChem CID:1004); Rhodamine 6G (PubChem CID:235227); Rhodamine B (PubChem CID:6694); Thermal desorption; Traditional Chinese pastries
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Temperatura
/
Contaminação de Alimentos
/
Espectrometria de Massas por Ionização por Electrospray
/
Corantes de Alimentos
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
/
Qualitative_research
Idioma:
En
Revista:
Food Chem
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Taiwan