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- W2689593572 abstract "The determination of aflatoxin M1 in milk using high performance liquid chromatography with photochemical post-column derivatization and fluorescence detection is described. The samples were first extracted and clean–up using the immunoaffinity AFLATEST column originally targeted for aflatoxins B1, B2, G1 and G2. The separation of aflatoxin M1 were performed using C18 Hypersil gold (150 mm × 4.6 mm, 5 μm) column at 40 °C under isocratic elution. Fluorescence detector (FLD) was set at 360 nm and 440 nm as excitation and emission, respectively. The use of methanol to replace acetonitrile as the mobile phase resulted in ∼67% peak area enhancement of AFM1. The limit of detection (LOD) and quantification (LOQ) of the analytical method after post-column derivatization without evaporation/reconstitution with mobile phase was 0.0085 μg L−1 and 0.025 μg L−1 respectively. However, LOD and LOQ improved to 0.002 and 0.004 μg L−1 respectively with the addition of evaporation/reconstitution step. The method was statistically validated, showing linear response (R2 > 0.999), good recoveries (85.2–107.0%) and relative standard deviations (RSD) were found to be ≤7%. The proposed method was applied to determine AFM1 contamination in various types of milk and milk products. Only 2 samples were contaminated with aflatoxin M1 (10% incidence). However, the contamination level is below the Malaysian and European legislation limits." @default.
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- W2689593572 date "2017-08-01" @default.
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- W2689593572 title "Determination of aflatoxin M 1 in milk and dairy products using high performance liquid chromatography-fluorescence with post column photochemical derivatization" @default.
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- W2689593572 doi "https://doi.org/10.1016/j.chroma.2017.06.054" @default.
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