Abstract
ABSTRACTMany methods have been developed to determine microbial levels in food products and these include ATP bioluminescence, hydrophobic grid membrane filtration (HGMF), impediometry and turbidimetry. A comparison of these techniques for detecting microbial levels in chicken carcass rinses was conducted.Only the ATP bioluminescence assay and the HGMF system showed a good correlation with plate counts (r = 0.82 and r = 0.83, respectively). The repeatability of these methods was acceptable. There was also a significant correlation between results obtained with two turbidimetric methods and HGMF as well as between HGMF and ATP bioluminescence data. However, only the ATP bioluminescence assay was able to provide results of microbial levels on a realtime basis (within 10 min). This would be beneficial for HACCP (Hazard Analysis of Critical Control Points) based programs.
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