Table 2 The summary of the extracted South African plant samples, their name, extracted part, quantified quercetin amount in a sample, and results used for the quercetin confirmation in the sample.
Sample No | Latin name | Plant part | UHPLC-MS/MS analysis | UHPLC-HRMS analysis | Confirmation | Concentration Per 1 g Sample (ng) | ||
|---|---|---|---|---|---|---|---|---|
Concentration (ng/mL) | Deviation of ion ratios (%) | Accuracy of precursor ions (ppm/mDa) | Detection of product ions (m/z 273.0405, 271.0243, 121.0295) | |||||
13 | Agapanthus praecox/ Amaryllidaceae | bulb | 2097.7 | 2.2 | −0.3/−0.09 | + | YES | 34,402.3 |
15 | Allium cepa/ Amaryllidaceae | Bulb | 367.4 | 3.2 | −1.3/−0.39 | + | YES | 5504.9 |
16 | Cydonia oblonga/ Rosaceae | Fruit | 68.19 | −0.3 | −0.3/−0.09 | + | YES | 1118.3 |
5 | Eucomis pole-evansii/ Asparagaceae | Bulb | 17.23 | −0.2 | −2.7/−0.81 | + | YES | 265.6 |
4 | Drimia robusta / Hyacinthaceae | Bulb | 16.20 | 2.2 | −3.3/−0.99 | + | YES | 252.7 |
3 | Scadoxus puniceus/ Amaryllidaceae | Bulb | 9.34 | −2.3 | −2.7/−0.81 | + | YES | 160.6 |
1 | Ornithogalum longibracteatum/ Liliaceae | Bulb | 2.14 | −5.8 | −4.7/−1.41 | + | YES | 33.4 |
8 | Boophone hemanthoides/ Amaryllidaceae | Bulb | 3.25 | −8.3 | 15.9/4.79 | − | MS/MS | 52.0 |
14 | Kigelia africana/ Bignoniaceae | Fruit | 2.01 | 11.6 | −5.7/−1.71 | − | MS/MS | 32.6 |
6 | Albuca nelsonii/ Hyacinthaceae | Bulb | 1.39 | −0.8 | −7.6/−2.29 | − | MS/MS | 22.8 |
11 | Haemanthus albiflos | Bulb | 1.30 | 14.7 | – | − | MS/MS | 30.0 |
7 | Tulbaghia violacea/ Amaryllidaceae | Bulb | < LOQ | – | – | − | NO | – |
9 | Bowiea volubilis/ Amaryllidaceae | Bulb | < LOQ | – | – | − | NO | – |
12 | Clivia miniata/ Amaryllidaceae | Bulb | < LOQ | – | – | − | NO | – |
10 | Cyrtanthus obliquus / Amaryllidaceae | Bulb | < LOQ | – | – | − | NO | – |
2 | Merwilla plumbea / Hyacinthaceae | Bulb | < LOQ | – | – | − | NO | – |