enumeration of bacteria. enumeration of bacteria

enumeration of bacteria
enumeration of bacteria
enumeration of bacteria
enumeration of bacteria

1. Enumeration of microorganisms

2. Quantitative measurement of bacterial growth Based on Cell count Cell mass Cell activity

3. Method application Manner in which growth is expressed Microscopic count Enumeration of bacteria in vaccines and cultures No. of cells per ml Plate count Enumeration of bacteria in milk, water, foods, soil, cultures etc. Colony- forming unit (CFU) per cell Membrane filter Same as plate count Same as plate count Turbidimetric measurement Microbiological assay, estimation of cell crop in broth, cultures, or aqueous suspensions Optical density ( absorbance) Nitrogen determination Measurement of cell crop from heavy culture suspensions to be used for research in metabolism Mg nitrogen per ml Dry weight determination Same as for nitrogen determination Mg dry weight of cells per ml Measurement of biochemical activity e.g., acid production by cultures Microbiological assays Milli equivalents of acid per ml or per culture

4. Petroff-hausser counting chamber

5. Microscopic counts

6. Microscopic counts

7. Plate count technique

8. Serial dilution followed by plate count

9. Membrane filter technique

10. Membrane filtration

11. Turbidometric method

12. Determination of bacterial growth by optical density

13. QUANTOM Tx™ Microbial Cell Counter

14. QUANTOM Tx™ Microbial Cell Counter The QUANTOM Tx™ Microbial Cell Counter is an image-based, automated cell counter that can detect individual bacterial cells in mere minutes. Its novel bacteria-optimized cell detection software can count individual bacterial cells in even the tightest clusters.