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Objective To understand the pollution levels of bromate, coliforms, pseudomonas aeruginosa, nitrite (calculated as ${\mathrm{{NO}}}_{2}$ )] of packaged drinking barreled water in Guangxi in 2022. Methods According to the type of water and test items, all pollutions were tested and judged by GB 8538-2016 “National standard for food safety Test method for drinking natural mineral water”, GB 4789.3-2016 “Food safety national standard food Microbiology test Coliform count”, GB 5009.33-2016 “National standard for food safety Determination of nitrite and nitrate,” GB 19298-2014 “Food safety national standard Packaging drinking water”, GB 2762-2017 “Food safety national standard food Pollutant limits”. Results 204 batches of packaged drinking barreled water were collected. Pseudomonas aeruginosa was deteted in 55 batches with a detection rate of 26.96%. Not a single batch exceeded permitted level of bromate, coliform or nitrite. Conclusion Most products are safe, but the pollution of Pseudomonas aeruginosa is still an outstanding problem. Enterprises should strengthen the cleaning and isinfection of pipes and barrels and standardize transportation storage to ensure product safety.
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| 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 |
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