Skip to main content

Advertisement

Table 1 Chemical composition, mass spectral data (negative ionisation mode) and content of the main identified constituents of exGrape® seed extract (quantitaive data are reffered to the extrac as it is)

From: Effect of consuming a grape seed supplement with abundant phenolic compounds on the oxidative status of healthy human volunteers

Rt Compound [M-H] [M-2H]2− Content
(min)   (m/z) (m/z) (mg/100 mg)
8.3 Gallic acid 169.0   0.09
32.2 PC2 (B3) [C-C] + PC3 (C2) [C-C-C] 577.0, 865.1   0.65
34.8 PC2 (B1) [EC-C] 577.0   1.19
36.3 C 289.0   1.47
41.3 PC3 [EC-EC-C] 865.1   0.30
47.1 PC2 (B4) [C-EC] 577.1   0.64
54.4 PC2 (B2) [EC-EC] 577.0   1.69
61.7 EC 289.0   1.70
72.4 PC2-G (B1-3-G + B2-3′-G) 729.1   0.51
74.8 PC2 (B7) [EC-C] 577.1   0.23
76.0 PC3 (C1) [EC-EC-EC] 865.1   0.83
81.6 PC4 [EC-EC-EC-EC] 1153.1   0.28
83.2 PC5 [EC-EC-EC-EC-EC] 1441.1 720.2 0.11a
85.0 PC6 [EC-EC-EC-EC-EC-EC] - 864.2 0.02a
92.5 EC-G 441.1   0.14
111.2 PC2 (B5) [EC-EC] 577.2   0.22
  ∑ nongalloylated flavan-3-ol monomers 3.17
  ∑ nongalloylated flavan-3-ol dimers 4.53
  ∑ nongalloylated flavan-3-ol monomers and oligomers 9.11
  ∑ galloylated flavan-3-ol monomer and oligomers 0.65
  ∑ flavan-3-ols 17.46
  1. R t retention time, C (+)-catechin, EC (−)-epicatechin, PC x procyanidin oligomers (subscript x - number of elemental units (x = 2 (dimer), 3 (trimer), etc.), PC x G galloylated procyanidin, G galloyl unit
  2. a Values below the limit of quantification