¹H HR-MAS NMR Spectroscopy and the Metabolite Determination of Typical Foods in Mediterranean Diet

Figure 5

Comparison between the one-dimensional proton spectra of the lemon juice from PGI Interdonato lemon of Messina (red line) and Interdonato Turkish lemon (black line) in the region of the sugars. 20: malic acid, 23: choline, 24: glucose, 25: myoinositol, 26: scyllo-inositol, 27: methanol, 28: sucrose, 29: fructose, 30: serine, 31: trigonelline, and 32: ascorbic acid.