Table 1.

Macro- and trace elements content, expressed in g/kg and mg/kg DW, respectively, in some European edible seaweeds from different locations.

Species	Location	Macrominerals					Trace Elements								Reference
		Na	K	Ca	Mg	P	Fe	Mn	Cu	Zn	Co	Mo	Se	I
green macroalgae
Ulva spp.	Portugal	24	25	4–8	20–38	1.3	139–1100	13–94	3–33	16–64	0.2–1.4	0.3	0.2–2	23–114	[35,37,44]
	Spain	16–23	16–26	3.7–5.2	19–21	2	190–2830	16–91	2–9	4–30	0.1–0.6	-	0.3	8–66	[36,49,65,66,67,68]
	Italy	-	-	-	-	-	1033	-	13	64	-	-	-	-	[69]
	Ireland	11	12	20	24	3	353	86	22	17	0.3	-	<0.1	-	[70]
	Norway	-	-	4, 6	15–26	0.5–1	210–6000	11–130	5–6	8–25	-	-	0.03–0.1	21–130	[71]
	Unknown	-	12–26	2–5	-	3–7	-	32–637	3–23	6–35	-	-	-	28–64	[46,72]
red macroalgae
C. crispus	Denmark	31	33	54	9	3	490	653	5	74	-	0.7	0.6	-	[52]
	Unknown	7–43	10–32	2–4	3–7	-	22–40	10–13	<5	9–71	0.1	0.1	-	-	[6,72,73]
Gracilaria spp.	Portugal	16	92	2	3–4	2	1049–2110	157–392	2–35	33	1.5	-	1	47	[35,44]
	Greece	-	-	-	-	-	95	-	2	95	-	-	-	-	[74]
	Denmark	10	49	4	3	1	352	502	2	24	-	0.2	-	-	[52]
P. calcareum	Unknown	-	1	303	-	0.6	-	175	14	15	7	-	-	34	[46]
P. palmata	Spain	3	44	7	2	-	114	233	4	15–46	0.4	-	-	77	[49,65,68]
	Norway	-	-	4	5	3	100	11	5	29	-	-	0.1	260	[71]
	Denmark	3	41	9	2	-	307	578	5	21	-	0.6	-	-	[52]
	Unknown	4	8–96	0.4–1	1	3	35	2–17	1–4	5–26	0.03	0.1	-	220	[73]
Porphyra spp.	Portugal	24	25–46	1–9	4–7	-	53–322	11–31	3–8	10–29	0.1–0.6	-	<0.2	-	[60,75]
	Spain	4–41	13–23	2–6	2–7	6	201–663	15–33	12–20	12–20	0.2–0.3	0.4	0.2–0.5	43	[36,38,45,49,65,68]
	France	44	24	7	8	1.5	149	23	10	82	0.3	1	0.5	-	[38,45]
	Unknown	2–36	7–35	1–4	4–6	5	103–156	27–37	3–14	14–74	0.1	0.2	-	42	[6,46,72,73]
brown macroalgae
A. esculenta	Ireland	-	-	-	-	-	82–411	-	0.4–1	24–45	-	-	-	-	[76]
	Norway	12–61	20–32	7–31	4–12	2–3	52–850	2–22	1–4	7–49	0.2–1	0.4–3	0.04–1	220	[32,71,77]
	Scotland	-	-	-	-	-	180–1159	7–35	2–4	18–29	-	0.4–0.6	-	398–1238	[56]
A. nodosum	Spain	46–49	38–41	7–10	8.6–9	-	133–212	20–41	25	64	-	-	-	-	[34,78]
	Norway	31–52	14–87	11–14	8–10	0.5–2	150–370	10–16	2–9	28–96	3–5	0.1–1	<1	-	[32]
	Unknown	42	22–28	10–13	8	2	204	16–42	2–4	29	2	<1	<1	744–811	[46,79]
F. spiralis	Portugal	14	10–47	1–11	2–10	-	24–1205	14–98	1–2.4	15–740	0.2–2	-	<0.2	-	[60,75]
	Spain	39	40	7	9	-	448	145	45	71	-	-	-	-	[78]
F. vesiculosus	Portugal	23	41	14	8	-	88	547	30	30	-	-	-	-	[44]
	Spain	38	52	7	8	-	398	238	17	114	-	-	-	-	[78]
	UK	37	30	14	9	2	1500	-	80	-	-	-	-	700	[61]
	Norway	27–40	21–42	10–21	6–9	0.9–2	150–260	56–99	3–6	41–95	<3	<1	<1	-	[32,71]
	Unknown	55	24–43	9	10	1	42	55–72	5	37	-	-	-	655	[6,46]
H. elongata	Spain	18	78	12	2	-	14	10–47	2	4–40	0.4–1	-	-	117	[49,65,68]
	Unknown	5	8–62	3–5	3	1	4	7–49	1–4	6–49	0.2	0.03	-	122	[46,72,73]
Laminaria spp.	Spain	13–45	52–113	10–20	4–11	2	20–108	3–7	1–13	5–37	0.03–0.2	0.07	0.2–0.3	6138	[36,38,45,49,65,68]
	France	31	23	13	9	1	68	4	16	33	0.07	0.05	0.6	-	[38,45]
	Norway	-	-	10	8	2	13–58	1.6–4	0.6–2	6–24	0.03–0.3	-	0.02	3100	[71,77,80]
	Ireland	-	-	-	-	-	-	2–4	3–4	23–48	0.03–0.1	-	-	-	[81]
	Scotland	-	-	-	-	-	41–199	4–12	2–12	33–49	-	0.1–0.4	-	4761–9014	[56]
	Denmark	10	22	2	8	4	194	37	4	49	-	-	-	-	[57]
	Unknown	6–38	9–116	3–23	2–7	2	7–33	1–34	1–5	2–23	0.01	0.03	-	7316	[6,46,72,73]
S. latissima	Portugal	30	39	9–10	5–6	2	30–1854	4–6	1–38	39–42	0.4	-	1.3	958	[35,44]
	Norway	42–48	25–120	13–17	8–10	0.7–6	35–370	2–13	0.3–7	3–38	0.05–0.3	-	-	-	[32,77,80]
	Scotland	-	-	-	-		16–1159	7–45	2–5	8–31	-	0.1–1	-	39–4855	[56]
	Denmark	12	26	1	8	4	134	10	2	44	-	-	-	-	[82]
U. pinnatifida	Spain	52	63	13	10	-	43–46	1–7	1	4–22	0.1–0.4	-	0.5	306	[36,49,65,68]
	Unknown	7–71	9–87	3–17	3–12	3	9–170	1–19	1–7	3–136	0.03–0.4	0.03	-	191	[6,46,72,73]