Investigating the role of small, acid-soluble spore proteins (SASPs) in the resistance of Clostridium perfringens spores to heat
2006
Role of Small Acid-Soluble Proteins in Heat Resistance of Clostridium perfringens Spores
Sample size: 5
publication
Evidence: high
Author Information
Author(s): Raju Deepa, Michael Waters, Peter Setlow, Mahfuzur R Sarker
Primary Institution: Oregon State University
Hypothesis
SASPs produced by C. perfringens food poisoning isolates can play a role in the resistance of their spores to heat.
Conclusion
SASPs produced by C. perfringens food poisoning isolates help protect their spores from heat damage.
Supporting Evidence
- All three ssp genes were found in five clinical C. perfringens food poisoning isolates.
- SASPs were produced by C. perfringens food poisoning isolates.
- Spores of the ssp3 mutant had a lower D value at 100°C compared to wild-type spores.
- The effect of reduced heat-resistance in the ssp3 mutant was restored by complementing with wild-type ssp3.
Takeaway
This study found that certain proteins help C. perfringens spores survive heat, which is important for food safety.
Methodology
The study involved PCR analysis, GUS assays, and heat sensitivity comparisons between wild-type and mutant strains.
Limitations
The study was limited by the inability to isolate ssp1 and ssp2 mutants despite multiple attempts.
Statistical Information
P-Value
0.001
Statistical Significance
p=0.001
Digital Object Identifier (DOI)
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