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Table 2 Characteristic ions and contents of phenolic acids of sunflower seed

From: A review of phytochemistry, metabolite changes, and medicinal uses of the common sunflower seed and sprouts (Helianthus annuus L.)

Compounds name Contents (mg/100 g of DM) [M−H] (m/z) Fragment ions (m/z)
Non-oilseed Oilseed
Ferulic acid 7.6 ± 3.6 12.4 ± 2.0 193 193, 134
Caffeic acid 20.5 ± 1.6 26.7 ± 1.1 179 179, 135
Non-esterified phenolic acids 28.1 ± 4.0 39.0 ± 2.3   
3-O-caffeoylquinic acid 480 ± 21.6 439.9 ± 8.6 353 191, 179, 192,180, 135,134
4-O-caffeoylquinic acid 58.2 ± 0.8 87.5 ± 4.1 353 191, 179, 173, 135
5-O-caffeoylquinic acid 2795.7 ± 167.4 2467.0 ± 13.9 353 191, 179, 135
5-O-p-coumaroylquinic acid 11.3 ± 2.4 113 ± 1.0 337 191, 163
5-O-feruloyquinic acid 16.5 ± 1.5 113 ± 1.0 367 191, 173, 111, 193, 274, 336
Coumaric and ferulic acid derivative 27.9 ± 2.8 22.6 ± 1.4   
Dicaffeoylquinic acid 196.2 ± 7.0 360.9 ± 1.1 515 353, 335,191, 179, 173,135
Caffeoylquinic acid 24.7 ± 3.3 365 ± 22 353 191
Monocaffeoylquinic acids 3358.8 ± 168.8 3030.9 ± 17.0   
3,4-Di-o-caffeoylquinic acid 14.9 ± 5.8 28.8 ± 0.3 515 353, 173, 179, 498, 191, 354, 335, 203, 299
3,5-Di-o-caffeoylquinic acid 135.0 ± 3.0 211.2 ± 1.1 515 353, 191, 179, 135, 173
4,5-Di-o-caffeoylquinic acid 46.3 ± 2.7 120.9 ± 0.2 515 353, 173, 203, 179, 299, 255, 191, 335, 317