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KMID : 0385520200330060233
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Analytical Science & Technology
2020 Volume.33 No. 6 p.233 ~ p.239
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Simultaneous determination of 9 preservatives in processed foods using high-performance liquid chromatography with photo diode array detector
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Lee Do-Yeon
Kim Min-Hee
Ahn Jang-Hyuk
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Abstract
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This study was performed to develop an analytical method using Carrez reagents as the precipitant to effectively and easily remove proteins and lipids while pretreating samples for the simultaneous determination of preservatives, including dehydroacetic acid (DHA), sorbic acid (SA), benzoic acid (BA), methyl ρ-hydroxybenzoate (MP), ethyl ρ-hydroxybenzoate (EP), propyl ρ-hydroxybenzoate (PP), isopropyl ρ-hydroxybenzoate (IPP), butyl ρ-hydroxybenzoate (BP), and isobutyl ρ-hydroxybenzoate (IBP). The effective selectivity was determined by HPLC separation analysis for nine preservatives in the test solution, after removing interfering materials such as lipids and proteins. The method developed in this study showed excellent linearity at 0.999 or higher. The limit of detection (LOD) ranged from 0.09 to ~0.12 mg/L and the limit of quantitation (LOQ) was ~0.280.37 mg/L.
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KEYWORD
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preservatives, carrez reagent, simultaneous determination, processed foods
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