Table 5.
Minimum bactericidal concentration (MBC) of anthocyanin-rich extracts from the four varieties of blueberries, expressed in mg/mL.
| Type of Strain | UTI Strains | ATCC Standard Strains | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Gram staining of the strains | Gram-negative | Gram-positive | Gram-negative | Gram-positive | |||||
| Strains | Klebsiella pneumoniae ssp. pneumoniae | Providencia stuartii |
Escherichia coli β-Haemolytic |
Pseudomonas aeruginosa | Micrococcus spp. |
Escherichia coli ATCC 25922 |
Salmonella Enteritidis ATCC 13076 | Listeria monocytogenes ATCC 19114 | |
| Sample | |||||||||
| Cristina Blue | 9.52 | 4.54 | 4.54 | 1.03 | 2.16 | 4.54 | 2.16 | 4.54 | |
| Star | 9.52 | 4.54 | 9.52 | 1.03 | 4.54 | 4.54 | 4.54 | 9.52 | |
| Snowchaser | 9.52 | 2.16 | 4.54 | 1.03 | 2.16 | 4.54 | 4.54 | 4.54 | |
| Stella Blue | 9.52 | 2.16 | 4.54 | 1.03 | 1.03 | 9.52 | 2.16 | 2.16 | |