Table 5.
Elemental composition of infusions made from Aronia berries after 10 min decoction time (mean values and standard deviation, SD; n = 4; infusions based on 2 g dried berries + 98 mL water).
| Sample/Method | Determined Value | Al | Ba | Ca | Cd | Co | Cr | Cu | Fe | K | Mg | Mn | Na | Ni | Pb | Sr | Zn |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| infusions from Aronia berries | LOD [µg/L] | 0.58 | 0.09 | 2.1 | 0.41 | 0.57 | 0.77 | 0.40 | 0.21 | 0.05 | 2.8 | 0.08 | 0.09 | 1.0 | 5.1 | 0.07 | 0.81 |
| analytical method | a | AES | AES | AES | AES | AES | AES | AES | AES | AES | AES | AES | AES | AES | AES | AES | AES |
| infusions from Aronia berries | Concentration [µg/L] | 160 | 0.10 | 3235 | b | b | 3.2 | 3.3 | 0.31 | 21,821 | 1485 | 0.40 | 8.7 | 2.3 | b | b | 2.2 |
| SD [µg/L] | 14 | 0.04 | 89 | 0.4 | 0.03 | 0.02 | 264 | 72 | 0.02 | 0.3 | 0.1 | 0.1 | |||||
| extraction yield in % | 4.3 | n.c. | 7.6 | 25 | 27 | 9.5 | 11 | 7.2 | 4.0 | 44 | 20 | 23 | |||||
| extracts from Aronia berries 50 g berries in 200 mL solution [23] | concentration [µg/L] | 29,530 | 620 | 37,490 | 2750 |
a due to high organic and particulate matter (even after centrifugation) measurement of the infusions with ICP-MS was not possible; b < LOD (limit of detection) n.c. not calculated.