Determination of the Phenolic Composition and Antioxidant Activity of Pear Extracts

Figure 4

Chromatograms of the investigated pear sample extracts, λ = 360 nm. The uppercase letters denote different pear cultivars: A: “Patten”; B: “Conference”; C: “Grabova”; and D: “Concorde.” Numbers indicate the peaks of analytes: 1: chlorogenic acid; 2: quercetin-3-O-rutinoside (rutin); 3: quercetin-3-O-galactoside (hyperoside); 4: quercetin-3-O-glucoside (isoquercitrin); 5: quercetin-3-O-malonylglucoside; 6: isorhamnetin rutinoside; 7: quercetin-3-O-rhamnoside (quercitrin); and 8: isorhamnetin glucoside.