Figure 3.

RP-HPLC chromatograms of a furosine standard with 80 pmol per 20 μL injection volume (a), and of furosine in low-heated (b) and high-heated (c) ESL milk samples, having furosine contents of 11.6 and 74.7 mg·100 g−1 protein, respectively (Nos. 127 and 31).