Table 1.
AFB1 levels of foods in Guangzhou from2015 to 2017.
| Food Category | Number of samples | <LOD | AFB1 level(μg kg−1) | |||
|---|---|---|---|---|---|---|
| Mean ±standard deviation | P50 | P95 | Range | |||
| Rice and rice Products | 490 | 483 | 0.13 ± 0.001 | ND | ND | 0.28~1.00 |
| Wheat and wheat products | 436 | 430 | 0.13 ± 0.001 | ND | ND | 0.28~1.46 |
| Maize and maize Products | 339 | 336 | 0.17 ± 0.001 | ND | ND | 1.50~6.30 |
| Nuts | 96 | 93 | 0.14 ± 0.001 | ND | ND | 0.62~1.37 |
| Tea | 128 | 105 | 0.36 ± 0.62 | ND | 1.68 | 0.25~4.0 |
| Vegetable oil a | 365b | 223e | 6.32±25.99 | ND | 30.45 | 0.26~283.0 |
| 1. Commercial vegetable oil | 269c | 201 f | 0.67 ±1.81 | ND | 3.01 | 0.35~7.30 |
| 2 Home-made peanut oil | 96d | 22 g | 38.74 ±47.45 | 3.21 | 141.40 | 0.26~283.0 |
| Total | 1854 | 1670 | 1.40±11.94 | ND | 2.20 | 0.25~283.0 |
a = vegetable oil equalsthe sum of commercial vegetable oil and home-made peanut oil.
b = c+d.
e = f+g.
AFB1: Aflatoxin B1; LOD: Limit of detection; ND: Not detected.