Table 1 DPPH radical scavenging activity of extracts from Ledum palustre L. (%)

Samples	Concentration (μg/mL)			RC50
	10	100	1,000
	Water extraction	13.7±2.31)a2)	41.0±3.2b		75.2±2.2d	272.1±1.9
Autoclave extraction	19.5±1.9a	41.4±0.5b	79.2±0.8d	242.1±1.1
Ultrasonic wave extraction	29.9±1.1a	38.1±1.4b	81.0±1.0de	281.5±0.8
70% Ethanol extraction	19.2±0.7a	43.4±0.5b	82.3±1.3e	197.2±2.4
Ascorbic acid	24.5±0.5a	47.5±0.9d	90.2±0.8e	135.3±1.1

All values are mean±SD (n=3).
^a-eMeans with different superscript mall letters within sample groups are significantly different by Duncan’s multiple range test (p<0.05).