Fig. 1. HLC analysis of a pan residue obtained after frying fillet of pork at 225°C. The upper plot shows the UV absorption at 263 nm and the lower plot shows the fluorescence chromatogram.
The peaks corresponding to Trp-P-1, Trp-P-2, harman (H) and norharman (NH) are indicated.
The small figures show the on-line recorded UV spectra of Trp-P-1 and Trp-P-2 in the same sample compared with library spectra.