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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Khayoon, Wejdan Shakir Saad, Bahruddin Salleh, Baharuddin Ismail, Nor Azliza Abdul Manaf, Normaliza Hj Abdul Latiff, Aishah |
| Description | Country affiliation: Malaysia Author Affiliation: Khayoon WS ( School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia.) |
| Abstract | The development of a reversed phase high performance liquid chromatography fluorescence method for the determination of the mycotoxins fumonisin B(1) and fumonisin B(2) by using silica-based monolithic column is described. The samples were first extracted using acetonitrile:water (50:50, v/v) and purified by using a C(18) solid phase extraction-based clean-up column. Then, pre-column derivatization for the analyte using ortho-phthaldialdehyde in the presence of 2-mercaptoethanol was carried out. The developed method involved optimization of mobile phase composition using methanol and phosphate buffer, injection volume, temperature and flow rate. The liquid chromatographic separation was performed using a reversed phase Chromolith(®) RP-18e column (100 mm × 4.6 mm) at 30 °C and eluted with a mobile phase of a mixture of methanol and phosphate buffer pH 3.35 (78:22, v/v) at a flow rate of 1.0 mL min(-1). The fumonisins separation was achieved in about 4 min, compared to approximately 20 min by using a C(18) particle-packed column. The fluorescence excitation and emission were at 335 nm and 440 nm, respectively. The limits of detections were 0.01-0.04 µg g(-1) fumonisin B(1) and fumonisin B(2), respectively. Good recoveries were found for spiked samples (0.1, 0.5, 1.5 µg g(-1) fumonisins B(1) and B(2)), ranging from 84.0 to 106.0% for fumonisin B(1) and from 81.0 to 103.0% for fumonisin B(2). Fifty-three samples were analyzed including 39 food and feeds and 14 inoculated corn and rice. Results show that 12.8% of the food and feed samples were contaminated with fumonisin B(1) (range, 0.01-0.51 µg g(-1)) and fumonisin B(2) (0.05 µg g(-1)). The total fumonisins in these samples however, do not exceed the legal limits established by the European Union of 0.8 µg g(-1). Of the 14 inoculated samples, 57.1% contained fumonisin B(1) (0.16-41.0 µg g(-1)) and fumonisin B(2) (range, 0.22-50.0 µg g(-1)). Positive confirmation of selected samples was carried out using liquid chromatography-tandem mass spectrometry, using triple quadrupole analyzer and operated in the multiple reaction monitoring mode. |
| File Format | HTM / HTML |
| ISSN | 00032670 |
| Issue Number | 1-2 |
| Volume Number | 679 |
| e-ISSN | 18734324 |
| Journal | Analytica Chimica Acta |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2010-10-29 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Analytical Discipline Chemistry Analytic Sample Preparation Methods Methods Animal Feed Analysis Chromatography, Reverse-phase Food Contamination Fumonisins Chromatography, High Pressure Liquid Fluorescent Dyes Fluorometry Limit Of Detection Spectrometry, Mass, Electrospray Ionization Tandem Mass Spectrometry Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Environmental Chemistry Analytical Chemistry Biochemistry |
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