| Autor: |
Keabetswe Masike, Msizi Mhlongo, Shonisani Mudau, Ofentse Nobela, Efficient Ncube, Fidele Tugizimana, Mosotho George, Ntakadzeni Madala |
| Rok vydání: |
2017 |
| DOI: |
10.6084/m9.figshare.c.3734185_d1.v1 |
| Popis: |
Additional file 1. Figure S1. Comparison of UPLC-SIM-MS chromatograms of selected HCA conjugates from surrogate standards of coffee (A and B) and pineapple extracts (C and D) and compared to M. oleifera and A. viridis extracts respectively. A Viva C18 analytical column (3.0 µm, 2.1 × 100 mm; Restek, USA) was eluted with a linear gradient at a constant flow rate of 400 µL/min of Methanol/Water mobile phase. The targeted ions were monitored using product ion scan MS/MS approach in ESI negative ionization mode at various collision energies (5–35 eV). A and B HCAs conjugated to quinic acid: (A) p-coumaroyl-quinic acid and (B) feruloyl-quinic acid. C and D HCAs conjugated to isocitric acid: (C) caffeoyl-isocitric acid and (D) p-coumaroyl-isocitric acid. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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