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http://dx.doi.org/10.3746/jkfn.2017.46.4.459

Development and Validation of Analytical Method for Determination of Biphenyl Analysis in Foods  

Kim, Jung-Bok (Korea Advanced Food Research Institute)
Kim, Myung-Chul (Korea Advanced Food Research Institute)
Song, Sung-Woan (Korea Advanced Food Research Institute)
Shin, Jae-Wook (Korea Advanced Food Research Institute)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.46, no.4, 2017 , pp. 459-464 More about this Journal
Abstract
Biphenyl is used as an intermediate in the production of crop protection products, a solvent in pharmaceutical production, and as a component in the preservation of citrus fruits in many countries. Biphenyl is not authorized for use and also does not have standards or specifications as a food additive in Korea. National and imported food products are likely to contain biphenyl. Therefore, control and management of these products is required. In this study, a simple analytical method was developed and validated using HPLC to determine biphenyl in food. These methods are validated by assessing certain performance parameters: linearity, accuracy, precision, recovery, limit of detection (LOD), and limit of quantitation (LOQ). The calibration curve was obtained from 1.0 to $100.0{\mu}g/mL$ with satisfactory relative standard deviations (RSD) of 0.999 in the representative sample (orange). In the measurement of quality control (QC) samples, accuracy was in the range of 95.8~104.0% within normal values. The inter-day and inter-day precision values were less than 2.4% RSD in the measurement of QC samples. Recoveries of biphenyl from spiked orange samples ranged from 92.7 to 99.4% with RSD between 0.7 and 1.7% at levels of 10, 50, and $100{\mu}g/mL$. The LOD and LOQ were determined to be 0.04 and $0.13{\mu}g/mL$, respectively. These results show that the developed method is appropriate for biphenyl identification and can be used to examine the safety of citrus fruits and surface treatments containing biphenyl residues.
Keywords
biphenyl; method development; validation; preservative;
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