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Development of an automated on-line pre-column derivatization procedure for sensitive determination of histamine in food with high-performance liquid chromatography–fluorescence detection
- Source :
-
Journal of Chromatography A . Oct2008, Vol. 1209 Issue 1/2, p70-75. 6p. - Publication Year :
- 2008
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Abstract
- Abstract: An improved sensitive method was developed and validated for the determination of histamine in food samples by using automated on-line pre-column derivatization coupled with high performance liquid chromatography and fluorescence detection (HPLC–FLD). o-Phthaldialdehyde (OPA) was adopted as derivatization reagent, and a “sandwich” (OPA+histamine+OPA) aspiration mode for the automated on-line pre-column derivatization was found to efficiently enhance the method sensitivity and precision. Histamine in food samples was efficiently extracted with a methanol–phosphate buffer solution (50:50, v/v) at 60°C for 30min, and purified with Waters Oasis MCX solid-phase extraction (SPE) cartridge. The limit of quantification for this method is 0.2mg/kg, which is very sensitive for histamine determination. With the “sandwich” injection program, 3.7% of relative standard deviation (RSD) was achieved by five replicative determinations of a sample blank spiked with 0.25mg/kg histamine standard. Histamine in food samples such as fumitory skipjack and mackerel was analyzed with relative recoveries over 95% at spiking level of 150mg/kg, as well as canned tuna fish and cheese with relative recoveries up to 98% at spiking levels of 0.50 and 5.0mg/kg, respectively. The proposed method was validated with a sample from the Food Analysis Performance Assessment Scheme (FAPAS) as a standard certified material; and the results (140±6mg/kg) agreed well with the assigned value (139mg/kg). [Copyright &y& Elsevier]
- Subjects :
- *CHEMICAL reactions
*CHROMATOGRAPHIC analysis
*IMIDAZOLES
*ANTIHISTAMINES
Subjects
Details
- Language :
- English
- ISSN :
- 00219673
- Volume :
- 1209
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Journal of Chromatography A
- Publication Type :
- Academic Journal
- Accession number :
- 34895776
- Full Text :
- https://doi.org/10.1016/j.chroma.2008.09.028