Phyllanthus emblica Linn. and Acmella oleracea (L.) R.K. Jansen are well-known traditional plants of
Thailand. The present study dealed with the preliminary phytochemical screening and determination of
antimicrobial activities of water extracts of the plants. Streptococcus mutans (BCC 16156) and Staphylococcus
aureus (ATCC 29213) were used to test the activities using the disc diffusion and broth micro-dilution methods
including inhibition zone. The results revealed that fruit extract of P. emblica revealed the presence of
flavanone, flavonol, flavone and tannins, whereas a leaf and flower extract of A. oleracea showed the presence
of saponin and flavanone. Phyllanthus emblica Linn. exhibited antibacterial activity against Streptococcus
mutans (minimum inhibitory concentration (MICs) 0.50 μg/ml) and Staphylococcus aureus, (MICs 0.50 μg/ml).
The preliminary studies on the extracts of P. emblica exhibited their antimicrobial potential which could be
exploited further as future antimicrobials for oral care applications.
Keywords: phyto-constituents, antibacterial activities, oral
Phyllanthus emblica Linn. and Acmella oleracea (L.) R.K. Jansen are well-known traditional plants ofThailand. The present study dealed with the preliminary phytochemical screening and determination ofantimicrobial activities of water extracts of the plants. Streptococcus mutans (BCC 16156) and Staphylococcusaureus (ATCC 29213) were used to test the activities using the disc diffusion and broth micro-dilution methodsincluding inhibition zone. The results revealed that fruit extract of P. emblica revealed the presence offlavanone, flavonol, flavone and tannins, whereas a leaf and flower extract of A. oleracea showed the presenceof saponin and flavanone. Phyllanthus emblica Linn. exhibited antibacterial activity against Streptococcusmutans (minimum inhibitory concentration (MICs) 0.50 μg/ml) and Staphylococcus aureus, (MICs 0.50 μg/ml).The preliminary studies on the extracts of P. emblica exhibited their antimicrobial potential which could beexploited further as future antimicrobials for oral care applications.Keywords: phyto-constituents, antibacterial activities, oral
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