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In vitro antimicrobial activity of betel, Piper betle leaf extract against Vibrio alginolyticus isolated from Asian sea bass, Lates calcarifer

Ahmad Baihaqi Othman, Mohd Zamri Saad, Nik Haiha Nik Yusof, Siti Zahrah Abdullah.

Cited by 8 Articles

Betel plant, Piper betle has excellent potential to be used as an alternative antimicrobial agent to replace the use of commercial antibiotic in aquaculture. The present study evaluates the in vitro antimicrobial activity of betel leaf extract against Vibrio alginolyticus isolated from Asian sea bass, Lates calcarifer. Disc diffusion method was used to evaluate the antimicrobial activity of different concentrations of betel leaf extract and to compare the antimicrobial activity with commercial antibiotics. Broth dilution method was used to determine the minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) of the extract against Vibrio alginolyticus. It was found that 100mg/mL of the extract produced significantly (p0.05) as the commercial antibiotics. The minimum inhibitory concentration and minimum bactericidal concentration for the extract at 100 mg/mL was 0.2 mg/mL and 0.39 mg/mL, respectively. The results show that ethanolic crude extract of betel leaves at 100 mg/mL is a potential alternative to antibiotic against Vibrio alginolyticus infection.

Key words: Piper betle, Vibrio alginolyticus, disc diffusion method, MIC, MBC

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