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Microbiological examination of cocoa powder
Applied Microbiology
|October 1, 1970
Summary
Total aerobic plate counts in cocoa powder samples revealed microbial contamination. Most samples had low bacterial levels, with Bacillus and Micrococcus being the predominant genera identified.
Area of Science:
- Food Microbiology
- Microbial Contamination Analysis
Background:
- Cocoa powder is a widely consumed food ingredient.
- Microbial quality is crucial for food safety and product shelf-life.
Purpose of the Study:
- To assess the microbial load of cocoa powder.
- To identify predominant bacterial genera in cocoa powder.
Main Methods:
- Total aerobic plate counts were performed on 36 cocoa powder samples.
- Bacterial isolates were identified to the genus level.
Main Results:
- Aerobic plate counts ranged from 100 to 27,000 colony-forming units per gram (CFU/g).
- 86% of samples exhibited counts below 9,300 CFU/g.
- Bacillus and Micrococcus were the only genera identified.
Conclusions:
- Cocoa powder samples generally show acceptable microbial levels.
- Bacillus and Micrococcus are common inhabitants of cocoa powder.
- Further studies could explore specific species and their implications.