Full
Outline
To investigate the heavy metal pollution and evaluate the dietary exposure risk of soy sauce in 2024.
This study collected 180 portions of soy sauce, including 139 portions of pre-packaged soy sauce and 41 portions of bulk soy sauce. Content of 7 kinds of elements including lead (Pb), cadmium (Cd),chromium (Cr), total arsenic (As), manganese (Mn), nickel (Ni) and copper (Cu) were determined by national standards. The pollution degree of Pb and As was evaluated by single-factor pollution index method (Pi) and nemerow comprehensive pollution index method (PN). The dietary exposure risk was evaluated by target hazard quotient (THQ) and total target hazard quotient (TTHQ).
The heavy metals were detected in all soy sauces,but there were differences in the types of heavy metals. According to the limited requirements of GB 2762—2022 National food safety standard-Limits of contaminants in food (Pb≤1.0 mg/kg and As≤0.5 mg/kg), only Pb in the 139 portions of pre-packaged soy sauce was detected to have unqualified samples, with an unqualified rate of 2.16%.The average content of other detected heavy metals was sorted as Mn>Ni>Pb>Cr>Cu>As>Cd. The 41 portions of bulk soy sauce Pb and As met the limited quantity requirements. And the average content of other detected heavy metals was sorted as Mn>Ni>Cr>Pb. Out of 180 soy sauce samples, 3 pre packaged soy sauce samples had reached the pollution level for Pb, while the rest were safe. PN showed that pre packaged soy sauce Pb was mildly contaminated,bulk soy sauce Pb was close to the warning line, and As was safe. The THQ and TTHQ values of heavy metals in all soy sauce were less than 1.
Most soy sauces have low contamination levels, only a small number of soy sauces are in mild and moderate contaminated. Therefore, the quality monitoring of soy sauce condiments should be strengthened. Under normal intake, the risk of dietary exposure of heavy metals in soy sauce is acceptable.
4
0
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
