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HPLC-FLD chromatograms. (a) AFs working standard solution 1.2 μg AFG2 L–1, 4 μg AFG1 L–1, 1.2 μg AFB2 L–1, 4 μg AFB1 L–1, and OTA (4 μg OTA L–1). (b) Naturally contaminated traditional dried red pepper flakes (DRPFs) with 1.52 μg AFB2 kg–1, 29.92 μg AFB1 kg–1, and 52.19 μg OTA kg–1.
