Table 8. Effect of catazyme and hydrogen peroxide treatments on antibacterial activity of S. flavescens and S. chinensis 30% ethanol extract against Streptococcus mutans KCCM 40105

Oxidant concentration
Sample¹⁾		Clear zone on plate (mm/disk)
Sample¹⁾		Cat²⁾	Hyp
SF	Control	10.86±1.34^3)c4)	12.78±0.99^b
	10 ppm	14.85±0.95^b	16.09±1.40^ab
	100 ppm	13.73±2.09^b	16.44±2.28^a
	1,000 ppm	18.87±0.54^a	16.70±2.39^a
SC	Control	13.11±0.78^b	13.64±1.20^ns5)
	10 ppm	13.05±2.47^b	12.37±0.62
	100 ppm	11.44±0.82^b	15.93±0.46
	1,000 ppm	18.77±1.10^a	12.48±3.14
Oxidant reaction temperature
SF	Control	13.27±1.88^ns	14.20±1.04^a
	20° C	13.81±2.18	9.88±0.16^c
	25° C	12.91±1.01	10.14±0.79^c
	30° C	11.60±0.44	10.31±0.42^c
	35° C	11.75±2.17	11.74±0.55^b
	40° C	11.18±0.61	11.76±0.11^b
SC	Control	12.27±0.90^ns	12.21±1.04^b
	20° C	12.17±1.38	13.54±0.48^a
	25° C	12.25±0.68	13.96±0.32^b
	30° C	11.47±0.38	12.23±2.46^b
	35° C	12.98±2.18	13.68±1.03^b
	40° C	12.09±1.52	11.81±1.85^b

SF, Sophorae flavescens; SC, Schizandra chinensis.
Cat, catazyme; Hyp, hydrogen peroxide.
All values are mean±SD (n=3).
Means with different superscript letters in the same column are significantly different at p⟨0.05 by Duncan’s multiple range test. a⟩b⟩c.
Means with letters in the same column are not significantly different at p⟨0.05 by Duncan’s multiple range test.