Rapid Discrimination of Adulteration of Olive Oil by Fourier Transform Infrared Spectrophotometry

FT-IRS with attenuated total reflection(ATR) was applied to the rapid discrimination of adulteration of olive oil.Samples of olive oil mixed with transgenic and non-transgenic,soybean oil,peanut oil,corn oil,sunflower oil or blended oil were heated at 160 ℃for 8 h,on the base of the difference in absorption peaks at 988 cm-1 shown in the 2nd derivative spectra obtained before and after heating,adulteration of olive oil was determined.The proposed method has the special features of simple and easy in pre-treatment without using organic reagents,and feasible for use in rapid discrimination of adulterated olive oil on market.