Research Article

Chemical Compositions and Antioxidant Activities of Thirty-Seven Typical Pomegranates Grown in China

Table 2

Identification of chemical components from pomegranate peel (QC sample).

No.RT (min)Exptl. mass (m/z)Calc. mass (m/z)Difference (ppm)AdductsChemical formulaTentative identificationFragments

10.76481.0635481.06183.5M-HC20H18O14HHDP hexoside301,302
21.16191.0192191.01920.0M-HC6H8O7Citric acid111
31.40481.0635481.06183.5M-HC20H18O15HHDP hexoside isomers301,302
42.28331.0683331.06655.4M-HC13H16O101-O-Galloyl-beta-D-glucose169
52.61609.1261609.12442.8M-HC30H26O14Gallocatechin-epigallocatechin
62.75305.0666305.06611.6M-HC15H14O7Epigallocatechin
72.82541.0251541.0254-0.6M-2HC48H28O30Punicalagin275, 301, 532, 601, 781
82.94541.0251541.0254-0.6M-2HC48H28O30Punicalagin isomers275, 301, 532, 601, 781
92.99449.1060449.1084-5.3M+C21H21O11Cyanidin 3-O-beta-D-glucoside287
103.06799.0631M-HEllagic acid derivative301, 479, 781
113.15289.2713289.07120.3M-HC15H14O6Catetein179,205,245
123.19633.0729633.07280.2M-HC27H22O18Corilagin301, 463
133.28463.0522463.05131.9M-HC20H16O13Ellagic acid hexoside301
143.37951.0758951.07401.9M-HC41H28O27Galloyl-HHDP-DHHDP-hex (granatin B)301, 445, 613, 933
153.54433.0406433.0407-0.2M-HC19H14O12Ellagic acid pentoside301
163.56447.0583447.05644.3M-HC20H16O12Ellagic acid deoxyhexoside301
173.69300.9993300.99843.0M-HC14H6O8Ellagic acid185, 229, 257, 283
183.74595.1638595.1663-4.3M+C27H31O15Cyanidin-3-O-rutinoside287,449
193.85447.0933447.09271.3M-HC21H20O11Kaempferol 3-O-glucoside227,255,284
204.02447.0933447.09271.3M-HC21H20O11Quercetin hexoside151, 179, 301
214.05435.1287435.1291-0.9M-HC21H24O10Phlorizin273
224.25435.1287435.1291-0.9M-HC21H24O10Phlorizin isomers167, 273
238.84487.3441487.34233.7M-HC30H48O5Asiatic acid
249.35485.3272485.32671.0M-HC30H46O5Actinidic acid
259.49487.3441487.34233.7M-HC30H48O6Asiatic acid isomers