Flavonoids in Ecuadorian Oreocallis grandiflora (Lam.) R. Br.: Perspectives of Use of This Species as a Food Supplement

Figure 2

¹HNMR of two crude extracts. The zone of 6-8 ppm is typical for signals of phenolic protons (flavonoids), while the zone between 3 and 4 ppm evidences for both extracts a relevant abundance of sugars.