Table 1.

Seaweed phenolic compounds recorded, according to phyla and phenolic compound group.

Seaweed Species	Phenolic Compound Group	Compound	Reference
Chlorophyta
Acetabularia ryukyuensis Dasycladus vermicularis	Flavonoids	Catechin, epicatechin, epigallocatechin, catechin gallate, epicatechin gallate, or epigallocatechin gallate Coumarin	[44,61]
Dasycladus vermicularis Cladophora socialis Nitella hookeri	Phenolic acids Flavonoids	Coumarin Vanillic acid C-glycosides	[44,58]
Rhodophyta
Gracilaria sp.	Phenolic acids	Benzoic acid, p-hydroxybenzoic acid, salicylic acid, gentisic acid, protocatechuic acid, vanillic acid, gallic acid, and syringic acid	[47]
Chondrus crispus	Flavonoids	Isoflavones; daidzein or genistein	[57]
Porphyra/Pyropia spp.		Isoflavones; daidzein or genistein
Neopyropia yezoensis (as Porphyra yezoensis)		Catechin, epicatechin, epigallocatechin, catechin gallate, epicatechin gallate, or epigallocatechin gallate	[58]
Gelidium elegans
Portieria hornemannii (as Chondrococcus hornemannii)
Callophycus serratus	Phenolic terpenoids	Bromophycolides	[72]
Palmaria palmata	Mycosporine-like amino acids	Palythine, shinorine, asterina-330, palythinol, and porphyra-334	[73]
Falkenbergia rufolanosa (tetrasporophyte phase of Asparagopsis armata)		Palythine and shinorine	[74]
Ochrophyta, Phaeophyceae
Ascophyllum nodosum	Phenolic acids	Rosmarinic acid; quinic acid	[45]
Bifurcaria bifurcata
Fucus vesiculosus
Ecklonia cava Cystoseira sp. Fucus spiralis Ishige okamurae Ascophyllum nodosum Bifurcaria bifurcata	Phlorotannins	Dieckol Eckol Fucophloroethol-type Diphlorethohydroxycarmalol Fucaphlorethol-type Tetrafuhalol B	[53,75,76,77,78]
Durvillaea antarctica	Flavonoids	C-glycosides	[49]
Lessonia spicata
Macrocystis pyrifera (as Macrocystis integrifolia)
Eisenia bicyclis (as Ecklonia bicyclis) Padina arborescens Padina minor		Catechin, epicatechin, epigallocatechin, catechin gallate, epicatechin gallate, or epigallocatechin gallate	[58]
Sargassum muticum		Daidzein or genistein	[57]
Sargassum vulgare
Sargassaceae	Phenolic terpenoids	Plastoquinones, chromanols, and chromenes	[71]
Stypopodium zonale		Stypofuranlactone; 10,18-dihydroxy-5′a-desmethyl-5′-acetylatomaric acid; 10-keto-10-deisopropyliden-5′a-desmethyl-5′-acetylatomaric acid; 10-keto-10-deisopropyliden-atomaric acid	[79]