Research Article
Phenolic Compounds and In Vitro Antibacterial and Antioxidant Activities of Three Tropic Fruits: Persimmon, Guava, and Sweetsop
Table 2
MIC, MBC, and MBC/MIC results of the fruits and phenolic compounds to 8 standard strains.
| | Antibacterial properties | Phenolic compounds | Gram-positive bacteria | Gram-negative bacteria | | S. aureus | B. cereus | S. epidermidis | M. albican | E. coli | S. typhimurium | S. flexneri | P. aeruginosa |
| | MIC (mg/mL) | Persimmon | 312.50 | 625.00 | 625.00 | 1250.00 | 1250.00 | 1250.00 | 1250.00 | 625.00 | | Guava | 1250.00 | 312.50 | 78.13 | 1250.00 | 625.00 | 625.00 | 625.00 | 312.50 | | Sweetsop | 1250.00 | 1250.00 | 312.50 | 2500.00 | 2500.00 | 2500.00 | 2500.00 | 2500.00 | | Gallic acid | 0.63 | 2.50 | 0.63 | 5.00 | 2.50 | 2.50 | 2.50 | 2.50 | | (+)-Catechin | 1.25 | 1.25 | 1.25 | 2.50 | 5.00 | 2.50 | 2.50 | 2.50 | | (−)-Epicatechin | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | 1.25 | | Chlorogenic acid | 5.00 | 2.50 | 0.63 | 5.00 | 5.00 | 2.50 | 2.50 | 2.50 | | Ferulic acid | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | | Quercetin | 2.50 | 2.50 | 1.25 | 2.50 | 2.50 | 2.50 | 2.50 | 2.50 | | Luteolin | 0.63 | 5.00 | 0.63 | 5.00 | 2.50 | 2.50 | 2.50 | 5.00 | | Kaempferol | 2.50 | 2.50 | 1.25 | 2.50 | 2.50 | 2.50 | 1.25 | 1.25 |
| | MBC (mg/mL) | Persimmon | 312.50 | 625.00 | 625.00 | 2500.00 | 1250.00 | 1250.00 | 1250.00 | 625.00 | | Guava | 2500.00 | 312.50 | 156.25 | 2500.00 | 1250.00 | 625.00 | 625.00 | 312.50 | | Sweetsop | 2500.00 | 1250.00 | 2500.00 | >5000.00 | 5000.00 | >5000.00 | 5000.00 | 2500.00 | | Gallic acid | 0.63 | 2.50 | 0.63 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | | (+)-Catechin | 1.25 | 1.25 | 1.25 | >5.00 | 5.00 | 2.50 | 2.50 | 2.50 | | (−)-Epicatechin | 2.50 | >5.00 | 5.00 | 5.00 | 2.50 | 2.50 | 2.50 | >5.00 | | Chlorogenic acid | 5.00 | 2.50 | >5.00 | >5 | 5.00 | 5.00 | 5.00 | 2.50 | | Ferulic acid | 5.00 | 2.50 | 5.00 | 5.00 | >5.00 | 5.00 | 5.00 | 5.00 | | Quercetin | 5.00 | 2.50 | 2.50 | 5.00 | 5.00 | 2.50 | 5.00 | 5.00 | | Luteolin | 2.50 | 5.00 | 1.25 | 5.00 | >5.00 | 5.00 | 5.00 | 5.00 | | Kaempferol | 5.00 | 2.50 | 1.25 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 |
| | MBC/MIC | Persimmon | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | | Guava | 2 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | | Sweetsop | 2 | 1 | 8 | / | 2 | / | 2 | 1 | | Gallic acid | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | | (+)-Catechin | 1 | 1 | 1 | / | 1 | 1 | 1 | 1 | | (−)-Epicatechin | 1 | / | 2 | 2 | 1 | 1 | 1 | / | | Chlorogenic acid | 1 | 1 | / | / | 1 | 2 | 2 | 1 | | Ferulic acid | 2 | 1 | 2 | 2 | / | 2 | 2 | 2 | | Quercetin | 2 | 1 | 2 | 2 | 2 | 1 | 2 | 2 | | Luteolin | 4 | 1 | 2 | 1 | / | 2 | 2 | 1 | | Kaempferol | 2 | 1 | 1 | 2 | 2 | 2 | 4 | 4 |
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Note: “/” means the MBC/MIC result cannot be provided because MBC was greater than the original concentration.
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