Journal of Advanced Pharmaceutical Technology & Research

ORIGINAL ARTICLE
Year
: 2021  |  Volume : 12  |  Issue : 1  |  Page : 79--83

Synergistic effect of ampicillin and dihydrobenzofuran neolignans (myticaganal C) identified from the seeds of Myristica fragrans Houtt. against Escherichia coli


Kanokrat Keawchai1, Parinuch Chumkaew1, Patima Permpoonpattana2, Theera Srisawat2 
1 Department of Agricultural Science and Technology, Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani Campus, Surat Thani, Thailand
2 Department of Agricultural Science and Technology, Faculty of Science and Industrial Technology; Department of Agricultural Science, Faculty of Innovative Agriculture and Fisheries, Prince of Songkla University, Surat Thani Campus, Surat Thani, Thailand

Correspondence Address:
Dr. Theera Srisawat
Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani Campus, 31 Moo 6, Tambol Makham Tia, Muang Surat Thani District, Surat Thani 84000; Faculty of Innovative Agriculture and Fisheries, Prince of Songkla University, Surat Thani Campus, 31 Moo 6, Tambol Makham Tia, Muang Surat Thani District, Surat Thani 84000
Thailand

The present study was designed to enhance the antibacterial activity of ampicillin against Escherichia coli by combining it with myticaganal C. Antibacterial activity of ampicillin combined with myticaganal C against E. coli was assessed by agar well diffusion. Minimum inhibitory concentrations (MICs) and synergy by checkerboard assay of ampicillin and myticaganal C were assessed by resazurin-based 96-well microdilution. Bacterial responses were assessed by flow cytometry. Ampicillin in combination with myticaganal C showed better zone of inhibition (31.67 ± 0.58 mm) than myticaganal C or ampicillin alone. MIC of ampicillin was found to be 12.5 μg/mL, but myticaganal C was ineffective against E. coli. Myticaganal C (8000 μg/mL) with ampicillin (0.0975 μg/mL) exhibited strong synergy, so the need for ampicillin was reduced 128-fold. Combination inhibited E. coli by acting on cell membrane and by granularity disruptions. These findings indicate that myticaganal C enhances the potential of ampicillin against E. coli, thus providing an effective alternative to deal with the problem of bacterial resistance.


How to cite this article:
Keawchai K, Chumkaew P, Permpoonpattana P, Srisawat T. Synergistic effect of ampicillin and dihydrobenzofuran neolignans (myticaganal C) identified from the seeds of Myristica fragrans Houtt. against Escherichia coli.J Adv Pharm Technol Res 2021;12:79-83


How to cite this URL:
Keawchai K, Chumkaew P, Permpoonpattana P, Srisawat T. Synergistic effect of ampicillin and dihydrobenzofuran neolignans (myticaganal C) identified from the seeds of Myristica fragrans Houtt. against Escherichia coli. J Adv Pharm Technol Res [serial online] 2021 [cited 2022 May 25 ];12:79-83
Available from: https://www.japtr.org/article.asp?issn=2231-4040;year=2021;volume=12;issue=1;spage=79;epage=83;aulast=Keawchai;type=0