Flow cytometry as a potential method of measuring bacterial viability in probiotic products: A review

- A review of flow cytometry for monitoring probiotic culture viability was undertaken.
- Flow cytometry had good correlation with plate counts for concentrated fresh cultures.
- Sample clean up steps are extremely important to achieve optimal resolution.
- Flow cytometry generates multi-parametric data not always reflecting plate counts.
- Regulatory definitions of cell viability and cell vitality needs clarification.