China Dairy ›› 2022, Vol. 0 ›› Issue (12): 115-119.doi: 10.12377/1671-4393.22.12.22

• DAIRY INDUSTRY • Previous Articles     Next Articles

Assessment on Uncertainty of Staphylococcus Aureus Count in Milk Powder

GU Shenglin, XIA Yawen, XU Qiong*   

  1. Shanghai Institute of Quality Inspection and Technical Research,Shanghai 200233
  • Online:2022-12-25 Published:2023-01-10

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Abstract: [Objective]To evaluate the uncertainty of the detection results of Staphylococcus aureus in milk powder. [Method]According to the second method of GB 4789.10-2016 National food safety standard-Food microbiological Detection of Staphylococcus aureus and JJF 1059.1-2012 Evaluation and Representation of Uncertainty Measurement,taking the milk powder of the standard quality control product as an example,analyzed the uncertainty introduced by sample preparation,dilution process,sample addition process,and repeatability testing. [Result]The amplification uncertainty of the detection results of Staphylococcus aureus in milk powder was U=0.108. [Conclusion]The method established in this study is suitable for the uncertainty assessment of Staphylococcus aureus under similar test conditions.

Key words: milk powder, Staphylococcus aureus, uncertainty

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