Table 1.

Screening of antibacterial activity of herb extracted. In total, 14 herbs were extracted using ethanol/water at 7:3. Antibacterial activity of herb extracts against E. coli was tested at the equal concentrations of extracts (500 mg/mL) using the disc diffusion agar agar method. The clear zone was measured and summarized in the table (mean ± standard deviation) In total, 14 herbs were extracted using ethanol/water at 7:3. Antibacterial activity of herb extracts against E. coli was tested at the equal concentrations of extracts (500 mg/mL) using the disc diffusion agar agar method. The clear zone was measured and summarized in the table (mean ± standard deviation).

Herb Extracts	Family Names	Clear Zone (mm)
Terminalia bellirica	Combretaceae	11.67 ± 0.58
Caesalpinia sappan L.	Fabaceae	11.50 ± 0.71
Ganoderma lingzhi	Ganodermataceae	10.33 ± 0.58
Phyllanthus emblica Linn.	Phyllanthaceae	10.00 ± 0
Kaempferia parviflora	Zingiberaceae	9.00 ± 0.00
Terminalia chebula Retz.	Combretaceae	8.00 ± 0.71
Clinacanthus nutans (Burm. f.) Lindau	Acanthaceae	7 ± 0.00
Momordica charantia	Cucurbitaceae	0
Andrographis paniculata	Acanthaceae	0
Zingiber officinale	Zingiberaceae	0
Garcinia mangostana	Clusiaceae	0
Curcuma longa	Zingiberaceae	0
Alpinia galanga	Zingiberaceae	0
Zingiber montanum	Zingiberaceae	0
Gentamycin (1 mg/mL)		20.50 ± 0.71