Inoculation of Staphylococcus and Micrococcus to Improve the Oxidative Stability of Cantonese Sausages
Article
Figures
Metrics
Preview PDF
Reference
Related
Cited by
Materials
Abstract:
The aim of this study was to investigate the mechanism of extending the shelf life of Cantonese sausages by bacterial inoculation. Strains Staphylococcus H33B and Micrococcus X142B originally isolated from Cantonese sausages based on their protease, lipase, and nitrite reductase activities were used to inoculate the sausages. First, the contents of peptides with different molecular weights in each treatment group were determined. Subsequently, four common antioxidant assays were employed to determine the antioxidant activities of the peptides (<5 ku), and finally, the values for fat oxidation, protein oxidation, and metmyoglobin content were determined. The results showed that the bacterial inoculation could not only significantly increase the content of small-molecule peptides (MW < 5 ku) in the sausage but also enhance the antioxidant activities of the peptides in the treatment group. Additionally, bacterial inoculation could reduce the extent of oxidation in the Cantonese sausages during storage, and the most significant effect was observed in the product inoculated with mixed bacteria. These results indicate that the inoculation of some kinds of bacteria into Cantonese sausages can reduce the extent of oxidation, thus extending their shelf life.
