Table 1. α-Glucosidase- and α-amylase-inhibitory effects of brown, green and red seaweeds extracts

Scientific name	IC50 values for α-amylase inhibition1)	IC50 values for α-glucosidase inhibition
Brown seaweeds
Agarum cribrosum	> 500 μg/mL	> 500 μg/mL
Carpomitra costata	> 500 μg/mL	> 500 μg/mL
Desmarestia tabacoides	36.71 ± 2.91 μg/mL	> 500 μg/mL
Dictyopteris divaricata	> 500 μg/mL	142.84 ± 50.33 μg/mL
Distromium decumbens	> 500 μg/mL	> 500 μg/mL
Ecklonia cava	30.85 ± 0.78 μg/mL	0.87 ± 0.03 μg/mL
Eisenia bicyclis	159.11 ± 28.79 μg/mL	3.57 ± 0.16 μg/mL
Ishige foliacea	33.68 ± 0.10 μg/mL	2.51 ± 0.09 μg/mL
Ishige okamurae	16.10 ± 1.01 μg/mL	0.78 ± 0.02 μg/mL
Myagropsis myagroides	> 500 μg/mL	> 500 μg/mL
Padina arborescens	> 500 μg/mL	> 500 μg/mL
Padina crassa	> 500 μg/mL	10.94 ± 0.70 μg/mL
Rugulopteryx okamurae	> 500 μg/mL	> 500 μg/mL
Saccharina japonica	> 500 μg/mL	> 500 μg/mL
Sargassum coreanum	> 500 μg/mL	> 500 μg/mL
Sargassum filicinum	120.69 ± 3.64 μg/mL	2.96 ± 0.06 μg/mL
Sargassum fusiforme	> 500 μg/mL	39.75 ± 3.13 μg/mL
Sargassum horneri	> 500 μg/mL	9.36 ± 0.66 μg/mL
Sargassum macrocarpum	> 500 μg/mL	> 500 μg/mL
Sargassum micracanthum	> 500 μg/mL	> 500 μg/mL
Sargassum miyabeiYendo	> 500 μg/mL	80.71 ± 3.22 μg/mL
Sargassum thunbergii	> 500 μg/mL	> 500 μg/mL
Sargassum yendoiOkamura & Yamada	> 500 μg/mL	> 500 μg/mL
Sporochnus radiciformis	> 500 μg/mL	> 500 μg/mL
Green seaweeds
Cladophora japonica	> 500 μg/mL	7.54 ± 0.43 μg/mL
Cladophora wrightianavar. minor	> 500 μg/mL	0.22 ± 0.01 μg/mL
Caulerpa okamurae	> 500 μg/mL	> 500 μg/mL
Codium fragile	> 500 μg/mL	> 500 μg/mL
Ulva pertusa	> 500 μg/mL	> 500 μg/mL
Red seaweeds
Acrosorium yendoi	> 500 μg/mL	> 500 μg/mL
Asparagopsis taxiformis	> 500 μg/mL	2.27 ± 0.12 μg/mL
Callophyllis japonica	> 500 μg/mL	> 500 μg/mL
Chondracanthus tenellus	> 500 μg/mL	> 500 μg/mL
Gracilaria textorii	> 500 μg/mL	> 500 μg/mL
Gracilaria verrucosa	> 500 μg/mL	> 500 μg/mL
Grateloupia angusta	> 500 μg/mL	> 500 μg/mL
Grateloupia crispata	> 500 μg/mL	> 500 μg/mL
Grateloupia elliptica	> 500 μg/mL	> 500 μg/mL
Martensia bibarihi	> 500 μg/mL	> 500 μg/mL
Meristotheca papulosa	> 500 μg/mL	> 500 μg/mL
Plocamium telfairiae	> 500 μg/mL	> 500 μg/mL
Acarbose2)	0.59 ± 0.01 μmol/L	92.39 ± 0.70 μmol/L

Different letters indicate statistically significant difference (p < 0.05).
IC₅₀, inhibitory concentration 50%.
Positive control.