Table 2 Elemental concentrations in the dried biomass and the corresponding ash of Dichapetalum gelonioides subsp. tuberculatum, subsp. sumatranum and subsp. pilosum (values are given in ranges and means).
Dichapetalum gelonioides subsp. | n | Ni | Zn | Al | Ca | Co | Fe | K | Mg | Mn | P | S |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Elemental concentrations in the dried biomass prior to ashing (µg g −1 ) | ||||||||||||
subsp. tuberculatum (Leaves) | 2 | 29535–30265 [29900] | 255–275 [265] | 40–45 [45] | 13525–15845 [14685] | 9.3–9.5 [9.4] | 175–220 [200] | 1335––1400 [1365] | 1845–2175 [2005] | 40–45 [40] | 3490–3885 [3685] | 3585–3940 [3760] |
subsp. sumatranum (Leaves) | 1 | 35 | 10730 | 55 | 19285 | 3.4 | 100 | 12190 | 2460 | 190 | 3290 | 11435 |
subsp. sumatranum (Stems) | 1 | 5.00 | 940 | 45 | 5530 | — | 45 | 2315 | 265 | 50 | 2675 | 1240 |
subsp. pilosum (Twigs and leaves) | 1 | 15 | 2995 | 45 | 19650 | 0.5 | 115 | 14665 | 1365 | 495 | 3010 | 9395 |
Elemental concentrations in the ‘bio-ore’ (biomass after ashing) (wt%) | ||||||||||||
subsp. tuberculatum (Leaves) | 2 | 10.0–11.0 [10.5] | 0.18–0.32 [0.25] | 0.05–0.13 [0.09] | 9.49–10.1 [9.77] | [0.01] | 0.09–0.23 [0.16] | 2.17–2.28 [2.23] | 2.07–2.48 [2.28] | [0.05] | 0.60–0.61 [0.61] | 2.55–2.90 [2.75] |
subsp. sumatranum (Leaves) | 1 | 1.30 | 2.88 | 0.13 | 13.5 | — | 0.12 | 8.65 | 1.85 | 0.22 | 0.72 | 7.22 |
subsp. sumatranum (Stems) | 1 | 0.03 | 3.27 | 0.39 | 19.1 | — | 0.14 | 8.13 | 0.99 | 0.17 | 1.14 | 3.89 |
subsp. pilosum (Twigs and leaves) | 1 | 1.14 | 1.80 | 0.07 | 14.3 | — | 0.07 | 11.8 | 1.14 | 0.29 | 0.55 | 5.80 |
