Optimization of Alkaline Extraction and Bioactivities of Polysaccharides from Rhizome of Polygonatum odoratum

Table 3

Antimicrobial activity of alkaline soluble polysaccharides from P. odoratum.

Polysaccharide concentration (mg/mL)	Diameter of inhibition zone
	S. aureus	P. aeruginosa	B. subtilis	E. coli
Blank	—	—	—	—
1.25	7.30 ± 1.18	—	—	—
2.50	8.33 ± 1.53^a	6.81 ± 1.27^c	—	7.45 ± 1.32^ab
5.0	10.38 ± 1.80^a	7.96 ± 0.79^b	6.71 ± 0.87^c	7.73 ± 1.22^b
7.5	14.32 ± 1.05^a	9.13 ± 0.83^b	8.87 ± 1.89^b	9.38 ± 1.56^b
10.0	14.93 ± 1.35^a	11.58 ± 2.21^bc	10.98 ± 2.15^c	12.43 ± 1.42^b

All results were presented as the means of three experiments. Values in the same lines with different letters were significantly different (𝑃<0.05).