Table 1. Mineral contents on dry mass basis in different black glutinous rice bran extracts (MS, SK, PY, PC and KK; for sample abbreviations see Materials and Methods).
| Mineral | w/(µg/g) | ||||
|---|---|---|---|---|---|
| MS | SK | PY | PC | KK | |
| Ca | (0.8±0.1)b | (1.6±0.1)a | (1.9±0.2)a | (1.9±0.3)a | (1.9±0.1)a |
| Cd | (0.7±0.1)a | N.D. | (0.6±0.1)b | (0.9±0.2)a | N.D. |
| Cr | N.D. | N.D. | N.D. | N.D. | N.D. |
| Cu | (5.9±0.6)b | (3.8±0.2)c | (3.9±0.3)c | (5.2±0.6)b | (7.1±0.3)a |
| Fe | (16.0±1.4)c | (17.0±0.6)c | (17.0±2.2)c | (24.0±1.1)b | (30.0±0.9)a |
| K | (17300±738)b | (20796±2020)a | (21885±451)a | (21823±854)a | (16643±242)b |
| Mg | (1894±63)b | (2123±6)b | (1979±41)b | (2409±188)a | (2412±191)a |
| Mn | (12.0±0.3)e | (15±1)c | (16.0±0.4)b | (21.0±0.6)a | (13.0±0.1)d |
| Na | (97±13)a | (85±14)ab | (84±6)ab | (73±12)b | (84±12)ab |
| Se | (12.0±1.3)bc | (14.0±1.2)b | (14.0±0.4)b | (18.0±1.4)a | (11.0±1.5)c |
| Zn | (133±3)a | (113±8)b | (120±3)b | (103±1)c | (117±2)b |
The data are presented as mean value±standard deviation of triplicate analyses. Different letters in the same row indicate statistically significant values (p≤0.05). N.D.=not detected, below detection limit of the instrument at 0.04 ppm