LI Qing-yao,SUO Yi-ping,WANG Qing-long,CAO Yue,TANG Yu-han,XING Chao,SONG Li-ping.Assessing the Hygiene of Retail Refrigerated Pre-marinated Beef Steaks in Beijing via Flow Cytometry[J].Journal of Instrumental Analysis,2025,44(09):1764-1768.
LI Qing-yao,SUO Yi-ping,WANG Qing-long,CAO Yue,TANG Yu-han,XING Chao,SONG Li-ping.Assessing the Hygiene of Retail Refrigerated Pre-marinated Beef Steaks in Beijing via Flow Cytometry[J].Journal of Instrumental Analysis,2025,44(09):1764-1768. DOI: 10.12452/j.fxcsxb.25012255.
Assessing the Hygiene of Retail Refrigerated Pre-marinated Beef Steaks in Beijing via Flow Cytometry
In order to assess the hygiene of retail refrigerated pre-marinated beef steaks rapidly and accurately,this study developed a colony count detection method based on flow cytometry. The T-test results showed no significant difference between the flow cytometry results and the national standard method(
p
<
0.05),and Pearson’s correlation analysis demonstrated a significant relationship between the two meth
ods(
p
<
0.001). This indicates that flow cytometry can be used to replace the GB 4789.2 national standard for analyzing colony counts in refrigerated pre-marinated beef steaks. Further,Chi-square analysis revealed no significant differences in hygiene among beef steaks sold in different supermarkets,suggesting that temperature control at the retail level is not the main factor affecting beef steak hygiene. Further metagenomic tracing confirmed that the hygiene of beef steaks is closely related to the hygiene control of the production environment.
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references
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