Table 1.
Heavy metal (Cd, Cr, As, Pb, Ni and Sn) contents in commercial yam powder products in South Korea
| Yam powder products1) | Heavy metals2) | |||||
|---|---|---|---|---|---|---|
|
| ||||||
| Cd (μg/kg) | Cr (mg/kg) | As (mg/kg) | Pb (mg/kg) | Ni (mg/kg) | Sn (mg/kg) | |
| A | 43.1±4.1 | 0.70±0.25 | 0.17±0.16 | 0.74±0.27 | 0.82 | 12.42 |
| B | 44.7±5.5 | 4.61±0.36 | 0.11±0.10 | 0.69±0.34 | 2.73 | 43.08 |
| C | 38.7±13.4 | 0.62±0.38 | 0.05±0.01 | 0.45±0.04 | 2.68 | 22.04 |
| D | 46.6±3.8 | 0.32±0.11 | 0.19±0.22 | 0.62±0.10 | 1.98 | 16.91 |
| E | 30.5±2.3 | 0.76±0.09 | 0.06±0.02 | 0.08±0.06 | 2.87 | 1.89 |
| F | 41.9±18.4 | 0.62±0.06 | 0.02±0.02 | 0.20±0.05 | 0.93 | 1.22 |
| Mean±SD | 40.9±7.9 | 1.27±0.21 | 0.10±0.09 | 0.46±0.14 | 1.00 | 8.13 |
1)
Yam powder products were cultivated originally from six various places in South Korea. A, Andong Book-Hoo; B, Bon-Chon; C, Andong Cham-Ma; D, Nock-Jon; E, Sansaem; F, Prus.
2)
Cd, cadmium; Cr, chromium; As, arsenic; Pb, lead; Ni, nickel; Sn, stannum.
Values of Cd, Cr, As, and Pb are from two separates experiments in duplicates (mean±SD) and values for Ni and Sn are single measurements.