Study of Growth Curve of Lactobacillus plantarum FNCC 0026 and Its Antibacterial Activity

Background: Lactobacillus plantarum is one of the lactic acid bacteria (LAB) with strong antibacterial activity. However, these show different growth for each strain. The turbidimetric bacterial curve approach most accurate, fastest, and reproducible method obtaining an overview life cycle. In addition, we also examined activity observation curve. Objective: aim study was to determine optimal incubation time highest biomass concentration FNCC 0026. Method: Observations optical density (OD) values ​​were performed simultaneously on 10 points 0026 every 12 hours. Antibacterial tested against Staphylococcus aureus ATCC 25923 Escherichia coli 8739. Result: fermentation broth showed OD value after 30 hours incubation. maximum diameter inhibition zone were 17.08 ± 0.51 mm 16.83 0.54 mm. Conclusion: results that had a linear relationship bacteria. 0026, optimum cultivation in lag phase (24 – hours).