Determination of patulin in apple and derived products by UHPLC-MS/MS. Study of matrix effects with atmospheric pressure ionisation sources
详细信息 查看全文
- 作者：Eduardo Beltr¨¢n ; Mar¨ªa Ib¨¢?ez ; Juan Vicente Sancho ; F¨¦lix Hern¨¢ndez
- 关键词：Mycotoxins ; Patulin ; ESI ; APCI ; UHPLC ; Tandem MS
- 刊名：Food Chemistry
- 出版年：2014
- 出版时间：1 January, 2014
- 年：2014
- 卷：142
- 期：Complete
- 页码：400-407
- 全文大小：548 K
文摘
Sensitive and reliable analytical methodology has been developed for the measurement of patulin in regulated foodstuffs by using ultra-high-performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) with triple quadrupole analyser. Solid samples were extracted with ethyl acetate, while liquid samples were directly injected into the chromatographic system after dilution and filtration without any clean-up step. Chromatographic separation was achieved in less than 4 min. Electrospray (ESI) and atmospheric pressure chemical ionisation (APCI) sources were evaluated, in order to assess matrix effects. The use of ESI source caused strong signal suppression in samples; however, matrix effect was negligible using APCI, allowing quantification with calibration standards prepared in solvent. The method was validated in four different apple matrices (juice, fruit, puree and compote) at two concentrations at the low ¦Ìg kg?1 level. Average recoveries (n = 5) ranged from 71 % to 108 % , with RSDs lower than 14 % .