Figure 5 replicate The Chemiluminescence and Oxidation of Linoleic Acid Catalysed by Glucose The upper graph gives the time dependence of the CL intensity observed from a solution (50 cm3, 2 mg cm-3 ) of linoleic acid when undergoing oxidation in the presence of 20 mM glucose. The CL obtained in Fig. 4, without any catalyst added, is also shown for comparison. The lower graph shows the UV absorbance at 234 nm (filled symbols) of linoleic acid (25°C) oxidized by glucose, as an indication of the formation of hydroperoxides. Also shown in the lower graph is the UV absorbance at 270-280 nm (unfilled symbols) of linoleic acid, as an indication of the formation of secondary oxidation products. return to text