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Analysis of sampling inspection results of wet rice and flour products in Yunnan Province in 2024
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Yu ZHANG1, 2, Ni HUANG3, Xiao-Zhao TANG2, Jing YANG2, Ni MA2, Rong-Ai LUO2, Min CHEN1, 2, *, Zu-Shun YANG1, 2, *
Journal of Food Safety & Quality | 2026, 17(5) : 329 - 334
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Journal of Food Safety & Quality | 2026, 17(5): 329-334
• Food Safety Supervision and Management •
Analysis of sampling inspection results of wet rice and flour products in Yunnan Province in 2024
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Yu ZHANG1, 2, Ni HUANG3, Xiao-Zhao TANG2, Jing YANG2, Ni MA2, Rong-Ai LUO2, Min CHEN1, 2, *, Zu-Shun YANG1, 2, *
Affiliations
  • 1.Yunnan Provincial Key Laboratory of Public Health and Biosafety, Yunnan Center for Disease Control and Prevention(Yunnan Provincial Academy of Preventive Medical Sciences), Kunming 650022, China
  • 2.Health Laboratories Center, Yunnan Center for Disease Control and Prevention (Yunnan Provincial Academy of Preventive Medical Sciences), Kunming 650022, China
  • 3.School of Basic Medical Sciences, Naval Medical University, Shanghai 200433, China
doi: 10.19812/j.cnki.jfsq11-5956/ts.20251105005
Outline
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Objective

To evaluate the contamination levels of Bacillus cereus and Burkholderia gladioli pathovar cocovenenans (BGC), along with the moisture content and dehydroacetic acid levels in wet rice and flour products in Yunnan Province.

Methods

From July to December 2024, a total of 108 samples of bulk wet rice products (including 48 portions of vermicelli, 47 portions of rice noodles, etc.) were collected from prefectures in Yunnan Province, covering markets (50.93%), supermarkets (17.59%), small restaurants (12.96%) and other locations. Pathogens were detected in accordance with GB 4789.14—2014 National food safety standard food-Microbiological examination-Detection of Bacillus cereus and GB 4789.29—2020 National food safety standard food-Microbiological examination-Detection of Burkholderia gladioli (formerly Pseudomonas cocovenenans subsp. Farinofermentans), while moisture and dehydroacetic acid content were determined in accordance with GB 5009.3—2016 National food safety standard-Determination of moisture in food and GB 5009.121—2016 National food safety standard-Determination of dehydroacetic acid in food.

Results

The detection rate of Bacillus cereus was 31.48% (34/108), with a quantitative range of <10–6.8×104 CFU/g (P90=4140 CFU/g). The highest detection rate was observed in roll noodles (43.75%,P=0.022), and the detection rate in refrigerated samples (45.71%) was significantly higher than that in the room temperature group (P<0.001). Neither BGC nor excessive dehydroacetic acid was detected in any of the samples. The 3 samples of wet rice noodle products failed to meet the moisture content requirements stipulated in DBS53/017—2023 Local food safety standards of Yunnan Province-Rice noodles, rolled rice noodles and rice vermicelli (blocks).

Conclusion

Wet rice products in Yunnan are at risk of contamination by Bacillus cereus, particularly roll noodles and refrigerated products. It is essential to strengthen hygiene control in both production and circulation processes. No BGC contamination or potential risk of food poisoning caused by rice-fermenting bacteria has been identified.

Yunnan  /  wet rice and flour products  /  Bacillus cereus  /  Burkholderia gladioli pathovar cocovenenans  /  moisture  /  dehydroacetic acid
张禹, 黄宁, 汤晓召, 杨菁, 马妮, 罗荣爱, 陈敏, 杨祖顺. 2024年云南省湿米面类食品抽样检测结果分析. 食品安全质量检测学报, 2026 , 17 (5) : 329 -334 . DOI: 10.19812/j.cnki.jfsq11-5956/ts.20251105005
Yu ZHANG, Ni HUANG, Xiao-Zhao TANG, Jing YANG, Ni MA, Rong-Ai LUO, Min CHEN, Zu-Shun YANG. Analysis of sampling inspection results of wet rice and flour products in Yunnan Province in 2024[J]. Journal of Food Safety & Quality, 2026 , 17 (5) : 329 -334 . DOI: 10.19812/j.cnki.jfsq11-5956/ts.20251105005
Appendix
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Year 2026 volume 17 Issue 5
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Article Info
doi: 10.19812/j.cnki.jfsq11-5956/ts.20251105005
  • Receive Date：2025-11-05
  • Online Date：2026-11-05
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History
  • Received：2025-11-05
Funding
Affiliations
    1.Yunnan Provincial Key Laboratory of Public Health and Biosafety, Yunnan Center for Disease Control and Prevention(Yunnan Provincial Academy of Preventive Medical Sciences), Kunming 650022, China
    2.Health Laboratories Center, Yunnan Center for Disease Control and Prevention (Yunnan Provincial Academy of Preventive Medical Sciences), Kunming 650022, China
    3.School of Basic Medical Sciences, Naval Medical University, Shanghai 200433, China
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表12种不同金属材料的力学参数
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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