Table 3. Free radical scavenging activities of two different strains of Pyropia yezoensis

Sample	Free radical scavenging activity, IC50 (μg/mL)
	DPPH+	ABTS+
CP	803.84 ± 38.66	1,343.48 ± 99.93
G1	915.23 ± 20.81*	588.10 ± 9.32*

Data represents mean ± SEM (n = 3).
p < 0.05 compared to CP.
CP, commercially available strain of P. yezoensis; G1, Gold 1 strain; IC₅₀, the half maximal inhibitory concentration; DPPH⁺, 2,2-diphenyl-1-picrylhydrazyl; ABTS⁺, 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid).