Table 1. Tyrosinase inhibitory effects of brown, green, and red seaweeds

	Scientific name	Total phenolic contents (PGE mg/g)	IC₅₀ values for tyrosinase inhibition
Brown seaweeds	Dictyopteris divaricata	30.11 ± 1.72^d	> 500 μg/mL
	Ecklonia cava	280.11 ± 9.93^a	4.38 ± 0.08 μg/mL
	Eisenia bicyclis	72.94 ± 0.14 ^b	4.46 ± 0.52 μg/mL
	Ishige okamurae	76.84 ± 2.35^b	8.97 ± 0.91 μg/mL
	Myagropsis myagroides	7.62 ± 0.77^g	> 500 μg/mL
	Padina arborescens	8.81 ± 0.50^g	> 500 μg/mL
	Padina crassa	16.60 ± 0.99^f	> 500 μg/mL
	Sargassum horneri	39.49 ± 2.41^c	6.20 ± 0.22 μg/mL
	Sargassum miyabei Yendo	42.66 ± 2.03^c	> 500 μg/mL
	Sargassum serratifolium	25.34 ± 0.86^{d, e}	> 500 μg/mL
	Sargassum thunbergii	20.73 ± 1.76^{e, f}	> 500 μg/mL
	Sargassum yendoi Okamura & Yamada	30.51 ± 1.81^d	7.15 ± 0.96 μg/mL
Green seaweeds	Cladophora japonica	5.24 ± 0.50^c	> 500 μg/mL
	Cladophora wrightiana var. minor	62.37 ± 2.08^a	> 500 μg/mL
	Codium fragile	56.65 ± 2.16^b	> 500 μg/mL
	Salicornia europaea L.	ND ¹⁾	> 500 μg/mL
Red seaweeds	Asparagopsis taxiformis	11.36 ± 0.60^b	> 500 μg/mL
	Champia parvula	ND¹⁾	> 500 μg/mL
	Chondracanthus tenellus	5.40 ± 0.77^c	> 500 μg/mL
	Gracilaria textorii	ND¹⁾	> 500 μg/mL
	Grateloupia elliptica	28.76 ± 0.96^a	281.77±3.49 μg/mL
	Meristotheca papulosa	ND¹⁾	> 500 μg/mL
	Plocamium telfairiae	0.63 ± 0.56^d	> 500 μg/mL
Kojic acid²⁾			58.75 ± 1.85 μM

ND, not detect.
Positive control.
Values with different letters differ significantly.