HMF concentration was monitored to control honey adulteration with reducing sugar syrup produced by sucrose acidification. Recently, this method was doubted because HMF concentration increases spontaneously when honey is stored in a warm environ- ment (Ajlouni & Sujirapinyokul, 2010). Based on SCIRA method, the addition of high fructose corn syrup (HFCS) in honey would be detected when the adulteration is more than 7% (White et al., 1998; Simsek, Bilsel, & Goren, 201