was carried out for the first time. The separation was done with isocratic elution of a
mobile phase comprising water (with 0.5% formic acid) and acetonitrile (90:10, v/v) on Phenomenex C18
column (5.0 lm, 4.6 150 mm), at 30 C, flow rate of 0.8 mL min1 and detection at 285 nm. The validated
method showed excellent performance with low limits (LOD and LOQ of 0.09 and 0.26 mg L1,
respectively), good accuracy (recovery rates between 100% and 104%) and precision (RSD’s for repeatability
and intermediate precision between 0.57% and 6.43%). Good selectivity and linearity were also
observed. HMF contents in both foods were very high (406.6–2121.3 mg kg1 for corn syrup and
109.2–893.1 mg kg1 for cane syrup), which arouses concern about food safety of these products.
was carried out for the first time. The separation was done with isocratic elution of amobile phase comprising water (with 0.5% formic acid) and acetonitrile (90:10, v/v) on Phenomenex C18column (5.0 lm, 4.6 150 mm), at 30 C, flow rate of 0.8 mL min1 and detection at 285 nm. The validatedmethod showed excellent performance with low limits (LOD and LOQ of 0.09 and 0.26 mg L1,respectively), good accuracy (recovery rates between 100% and 104%) and precision (RSD’s for repeatabilityand intermediate precision between 0.57% and 6.43%). Good selectivity and linearity were alsoobserved. HMF contents in both foods were very high (406.6–2121.3 mg kg1 for corn syrup and109.2–893.1 mg kg1 for cane syrup), which arouses concern about food safety of these products.
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