Table 4.
Determination (mg·kg−1 dry muscle) of two metals (Sn and Pb) and two metalloid (As and Se) contents * in initial raw fish and canned mackerel subjected to different processing conditions **.
| Element | Frozen Storage Time (Months) | High-Pressure Processing (HPP) (MPa) | |||
|---|---|---|---|---|---|
| CT | 200 | 400 | 600 | ||
| Sn | Initial raw fish | 0.0011 A (0.0006) |
0.0011 A (0.0006) |
0.0011 A (0.0006) |
0.0011 A (0.0006) |
| 0 | 0.0032 aB (0.0004) |
0.0042 aB (0.0005) |
0.0042 aB (0.0009) |
0.0034 aB (0.0008) |
|
| 6 | 0.0045 aC (0.0002) |
0.0048 aB (0.0003) |
0.0053 aB (0.0005) |
0.0047 aB (0.0005) |
|
| Pb | Initial raw fish | 0.0127 B (0.0037) |
0.0127 B (0.0037) |
0.0127 B (0.0037) |
0.0127 B (0.0037) |
| 0 | 0.0032 abA (0.0012) |
0.0032 bA (0.0009) |
0.0025 bA (0.0001) |
0.0015 aA (0.0006) |
|
| 6 | 0.0040 aA (0.0013) |
0.0037 aA (0.0000) |
0.0039 aA (0.0015) |
0.0030 aA (0.0008) |
|
| As | Initial raw fish | 1.02 A (0.05) |
1.02 A (0.05) |
1.02 A (0.05) |
1.02 A (0.05) |
| 0 | 1.20 aB (0.01) |
1.47 bB (0.09) |
1.30 abA (0.30) |
1.16 aA (0.08) |
|
| 6 | 1.12 aAB (0.16) |
1.15 aAB (0.09) |
1.13 aA (0.10) |
1.17 aA (0.10) |
|
| Se | Initial raw fish | 0.42 A (0.02) |
0.42 A (0.02) |
0.42 A (0.02) |
0.42 A (0.02) |
| 0 | 0.81 aC (0.07) |
0.77 aB (0.06) |
0.92 bC (0.01) |
1.03 cC (0.04) |
|
| 6 | 0.62 aB (0.03) |
0.74 bB (0.03) |
0.76 bB (0.03) |
0.78 bB (0.02) |
|
* Mean values of three replicates (n = 3). Standard deviations are indicated in brackets. ** In each row, different lower-case letters (a–c) denote significant differences (p < 0.05) as a result of HPP. In each column, capital letters (A–C) denote significant differences (p < 0.05) as a result of freezing and frozen storage.