Dulse
Other names Dulse, Palmaria palmata
Dulse: moderate in histamine and nickel; low in FODMAPs, oligosaccharides, tyramine, salicylate and oxalates. If you're sensitive to any of these, check it against your profile before eating.
Intolerances
- Histamine (+liberators / DAO inhibitors)Moderate
Dulse is a red seaweed sold dried in flakes and often eaten straight from the bag as a savoury snack - which is the difference from nori, where the seaweed is a wrapper around something else. Eaten by the handful, the small per-gram histamine figure stops being small.
Sources· 2
- Maintz & Novak, Am J Clin Nutr 2007
- Zuberbier et al., EAACI/GA2LEN urticaria guideline
- NickelModerate
Dulse is a red seaweed eaten as a snack and a seasoning, which means it is eaten dry. Everything the plant took from the water is still in it, minus the water. Seaweed is the reason nickel is asked about here at all: it concentrates trace elements from seawater, and the review behind this level is about exactly that load in seaweed and in the ingredients made from it.
Sources· 1
- Bouga M. & Combet E., Foods 4 (2015) 240-253, trace elements and contaminants in seaweed and seaweed-containing foods
- FODMAPsLow
Dulse is not a land plant, and the fructans and GOS this axis counts are storage carbohydrates that land plants make. Seaweed stores different ones, which human enzymes also cannot split but which ferment more slowly and in smaller quantities than a serving of onion delivers. Whether an algal storage carbohydrate belongs on this axis is decided by Gibson and Shepherd's criterion — does it ferment rapidly in the proximal colon — and not by which sugar it is built from.
Sources· 2
- Gibson P.R. & Shepherd S.J., J Gastroenterol Hepatol 25 (2010) 252-258, the framework this axis rests on
- Muir J et al., J Agric Food Chem 55 (2007) 6619-6627 and 57 (2009) 554-565, fructans and short-chain carbohydrates measured in Australian vegetables and fruit
- OligosaccharidesFODMAPsLow
Dulse is a red alga, and red algae store floridean starch rather than fructans - a glucose-based polysaccharide closer to glycogen than to anything on this axis. It is also eaten in flakes, a gram at a time.
- TyramineLow
Dulse is low. Tyramine needs two things: protein to build it from, and a ferment or an ageing to build it in. Dulse has the first - it is unusually rich in protein for a sea green - and not the second: nothing ferments a dried flake, and a flake is all a serving ever is. No survey has measured an alga for this axis; the level rests on the vegetable surveys, the nearest measured thing to it, which put the leafy and green kinds at the bottom of their range.
Sources· 1
- Ly D. et al., J Med Food 11:2 (2008) 385-389, and Simon-Sarkadi L. et al., Z Lebensm Unters Forsch 198 (1994), tyramine in vegetables
- SalicylateLow
Dulse is low in salicylate, like other seaweeds. Dried dulse flakes are used as a seasoning, so the portion stays small by nature.
- OxalatesLow
Dulse is not a land plant, and oxalate is something land plants make to manage calcium in soil. That is why dulse sits low here, and it is sold as flakes used like a seasoning, so the portion is a pinch on top of a level that was already low.
Sources· 1
- Noonan S.C. & Savage G.P., Asia Pac J Clin Nutr 8:1 (1999) 64-74, oxalate content of foods and its effect on humans
- LactoseFODMAPsNone
- GlutenNo
- FructoseFODMAPsNone
- SorbitolFODMAPsNone
- SucroseNone
Intolerance levels are based on our documented scientific sources. See sources →
React to Histamine (+liberators / DAO inhibitors)? Check these too
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Frequently asked questions
Which intolerances does Dulse affect?
Dulse is notable for histamine, nickel, FODMAPs, oligosaccharides, tyramine, salicylate and oxalates. Clear on lactose, gluten, fructose, sorbitol and sucrose.
Does Dulse contain histamine?
Dulse contains moderate levels of histamine. Dulse is a red seaweed sold dried in flakes and often eaten straight from the bag as a savoury snack - which is the difference from nori, where the seaweed is a wrapper around something else. Eaten by the handful, the small per-gram histamine figure stops being small.
Does Dulse contain nickel?
Dulse contains moderate levels of nickel. Dulse is a red seaweed eaten as a snack and a seasoning, which means it is eaten dry. Everything the plant took from the water is still in it, minus the water. Seaweed is the reason nickel is asked about here at all: it concentrates trace elements from seawater, and the review behind this level is about exactly that load in seaweed and in the ingredients made from it.
Does Dulse contain FODMAPs?
Dulse contains only low levels of FODMAPs. Dulse is not a land plant, and the fructans and GOS this axis counts are storage carbohydrates that land plants make. Seaweed stores different ones, which human enzymes also cannot split but which ferment more slowly and in smaller quantities than a serving of onion delivers. Whether an algal storage carbohydrate belongs on this axis is decided by Gibson and Shepherd's criterion — does it ferment rapidly in the proximal colon — and not by which sugar it is built from.
Does Dulse contain oligosaccharides?
Dulse contains only low levels of oligosaccharides. Dulse is a red alga, and red algae store floridean starch rather than fructans - a glucose-based polysaccharide closer to glycogen than to anything on this axis. It is also eaten in flakes, a gram at a time. Amounts vary by brand and recipe, so always check the label of the exact product.
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