FOOD SCIENCE ›› 2016, Vol. 37 ›› Issue (22): 198-204.doi: 10.7506/spkx1002-6630-201622030

• Safety Detection • Previous Articles     Next Articles

Determination of Formaldehyde in Fruits and Vegetables by HPLC

LI Jun1,2, LIU Yongxiang2, WANG Hui1,2, LIU Jia1,2, LIU Hui2, KAN Jianquan1,*   

  1. 1. College of Food Science, Southwest University, Chongqing 400715, China;
    2. Biological Technology Institute of Guizhou Province, Guiyang 550006, China
  • Received:2016-04-10 Online:2016-11-16 Published:2017-02-22

Abstract: A high performance liquid chromatography (HPLC) method was used to determine formaldehyde in fruits and vegetables by formaldehyde derivation with pentafluorophenylhydrazine (PFPH). Samples were extracted and derived at 70 ℃ with ultrasonicaction for 30 min. After completion of the reaction, centrifugation was carried out and the supernatant was purified and analyzed by HPLC. The quantitation was performed using the external standard method. The separation was performed on an XDB-C18 column (4.6 mm × 250 mm, 5 μm) in an isocratic elution mode using a mobile phase consisting of acetonitrile and water (70:30, V/V) at a flow rate of 1.0 mL/min. The column temperature was 40 ℃ and detection wavelength was 258 nm. The results showed that the limit of quantification (LOQ) of the presented method was 0.114 mg/kg, with a good linear relationship in the range of 0.114–57 mg/L. The average recovery rates at three spiked levels were 81.4%–101.8%, with relative standard derivation (RSD) of 2.6%–5.0% (n = 6). The method was simple, stable and suitable for the determination of formaldehyde in fruits and vegetables with a low limit of detection (LOD).

Key words: fruits and vegetables, formaldehyde, HPLC, pentafluorophenylhydrazine

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