Table 2 DPPH radical scavenging activity of Semisulcospira libertina extract at various extraction conditions

Extraction methods	Extraction times (h)	DPPH RSA1) (%)
Hot water extraction	1	0.33±0.06
Acidic extraction	1	2.76±0.45a
	3	4.03±0.47b
	5	5.00±1.64c
Enzymatic extraction	1	0.95±0.25a
	3	1.79±0.81b
	5	5.32±0.10c
Enzymatic & acidic extraction	1	0.79±0.17a
	3	3.17±0.45b
	5	7.48±1.34c

RSA: radical scavenging activity.
Different letters within a column are significantly different (p<0.05), n=3.