TABLE 2.
The mineral elements content of hawk tea made by boiling water fixation during different storage time (mg/kg)
| Mineral elements | CK | 1Y | 3Y | 6Y |
|---|---|---|---|---|
| Ca a | 2,754.00 ± 16.97a | 2,673.50 ± 6.93a | 1,432.59 ± 2.77b | 32.03 ± 1.43c |
| Fe a | 328.00 ± 4.24c | 257.25 ± 2.01d | 694.19 ± 2.57a | 579.75 ± 2.27b |
| Se a | 0.13 ± 0.040b | 0.12 ± 0.030b | 0.10 ± 0.028b | 9.66 ± 0.63a |
| Zn a | 146.00 ± 4.24a | 106.35 ± 2.30b | 62.72 ± 1.88c | 62.40 ± 1.56c |
| Mg a | 2,215.00 ± 12.73c | 2,282.50 ± 3.39c | 3,399.24 ± 5.75b | 4,040.00 ± 8.48a |
| Mn a | 430.00 ± 7.07b | 355.00 ± 2.82c | 389.66 ± 2.65c | 636.00 ± 2.85a |
| Hg | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 |
| Ni | 4.50 ± 0.42b | 4.58 ± 0.36b | 5.53 ± 0.49b | 15.29 ± 2.14a |
| Cu | 54.00 ± 0.71b | 41.53 ± 1.21b | 17.09 ± 0.77c | 95.45 ± 2.30a |
| As | 0.17 ± 0.020b | 0.13 ± 0.028c | 0.14 ± 0.014c | 0.73 ± 0.042a |
| Cr | 1.40 ± 0.28c | 1.68 ± 0.084b | 1.42 ± 0.098c | 3.35 ± 0.12a |
| Pb | 13.80 ± 0.42a | 4.85 ± 0.24b | 0.40 ± 0.042d | 4.19 ± 0.35c |
| Total trace elements | 5,873.13 ± 9.04b | 5,674.72 ± 7.35c | 5,978.50 ± 10.10a | 5,359.84 ± 4.67d |
| Total heavy metal | 73.87 ± 0.35b | 52.77 ± 0.64c | 24.58 ± 0.49d | 119.01 ± 3.22a |
All of the data are expressed as mean ± standard deviation (SD) of three replicates.
Abbreviations: CK, the sample stored for 0 year; 1Y, the sample stored for 1 year; 3Y, the sample stored for 3 years; 6Y, the sample stored for 6 years.
a
Trace elements.
*
Values in each column with different letters are significantly different (p < .05).