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)
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 | |||