Kelp

Last Updated: September 28 2022

Ascophyllum nodosum is a species of seaweed. It is being investigated for its immunostimulatory properties and it may inhibit carbohydrate absorption after supplementation.

Kelp is most often used for

Summary

Ascophyllum nodosum is a species of seaweed found around the globe. It is one of the many species of seaweed called kelp.

Ascophyllum nodosum contains compounds called phlorotannins, which are unique to seaweed and may be able to inhibit starch and lipid absorption. This effect is very unreliable, to the point where two human studies investigating carbohydrate absorption reported two opposite effects.

Ascophyllum nodosum also contains a compound called ascophyllan, which may have immunostimulatory properties. Ascophyllum nodosum extract has anti-inflammatory properties. Much more research is needed to determine the practical significance of Ascophyllum nodosum supplementation.

Though Ascophyllum nodosum is a healthy food, there is no evidence to support its usefulness as a supplement.

What else is Kelp known as?
Note that Kelp is also known as:
  • Kelp (one Of Many Species)
  • Egg Wrack
  • Rockweed
  • Ascophyllum Nodosum
Dosage information

Human studies investigating Ascophyllum nodosum use 4,600 mg of Ascophyllum nodosum extract added to a food product, taken once per day.

More research is needed to determine if this is the optimal dose of Ascophyllum nodosum. Different extract concentrates have not been tested.

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References
3.^Zhang J, Tiller C, Shen J, Wang C, Girouard GS, Dennis D, Barrow CJ, Miao M, Ewart HSAntidiabetic properties of polysaccharide- and polyphenolic-enriched fractions from the brown seaweed Ascophyllum nodosumCan J Physiol Pharmacol.(2007 Nov)
5.^Chevolot L, Mulloy B, Ratiskol J, Foucault A, Colliec-Jouault SA disaccharide repeat unit is the major structure in fucoidans from two species of brown algaeCarbohydr Res.(2001 Feb 28)
6.^Chevolot L, Foucault A, Chaubet F, Kervarec N, Sinquin C, Fisher AM, Boisson-Vidal CFurther data on the structure of brown seaweed fucans: relationships with anticoagulant activityCarbohydr Res.(1999 Jun 30)
7.^Cumashi A, Ushakova NA, Preobrazhenskaya ME, D'Incecco A, Piccoli A, Totani L, Tinari N, Morozevich GE, Berman AE, Bilan MI, Usov AI, Ustyuzhanina NE, Grachev AA, Sanderson CJ, Kelly M, Rabinovich GA, Iacobelli S, Nifantiev NE; Consorzio Interuniversitario Nazionale per la Bio-Oncologia, ItalyA comparative study of the anti-inflammatory, anticoagulant, antiangiogenic, and antiadhesive activities of nine different fucoidans from brown seaweedsGlycobiology.(2007 May)
9.^Wang Y, Jiang Z, Kim D, Ueno M, Okimura T, Yamaguchi K, Oda TStimulatory effect of the sulfated polysaccharide ascophyllan on the respiratory burst in RAW264.7 macrophagesInt J Biol Macromol.(2013 Jan)
10.^Nakayasu S, Soegima R, Yamaguchi K, Oda TBiological activities of fucose-containing polysaccharide ascophyllan isolated from the brown alga Ascophyllum nodosumBiosci Biotechnol Biochem.(2009 Apr 23)
11.^Foley SA, Szegezdi E, Mulloy B, Samali A, Tuohy MGAn unfractionated fucoidan from Ascophyllum nodosum: extraction, characterization, and apoptotic effects in vitroJ Nat Prod.(2011 Sep 23)
15.^Haroun-Bouhedja F, Ellouali M, Sinquin C, Boisson-Vidal CRelationship between sulfate groups and biological activities of fucansThromb Res.(2000 Dec 1)
18.^Daniel R, Chevolot L, Carrascal M, Tissot B, Mourão PA, Abian JElectrospray ionization mass spectrometry of oligosaccharides derived from fucoidan of Ascophyllum nodosumCarbohydr Res.(2007 May 7)
20.^van Ginneken VJ, Helsper JP, de Visser W, van Keulen H, Brandenburg WAPolyunsaturated fatty acids in various macroalgal species from North Atlantic and tropical seasLipids Health Dis.(2011 Jun 22)
21.^Rayirath P, Benkel B, Mark Hodges D, Allan-Wojtas P, Mackinnon S, Critchley AT, Prithiviraj BLipophilic components of the brown seaweed, Ascophyllum nodosum, enhance freezing tolerance in Arabidopsis thalianaPlanta.(2009 Jun)
23.^Steevensz AJ, Mackinnon SL, Hankinson R, Craft C, Connan S, Stengel DB, Melanson JEProfiling phlorotannins in brown macroalgae by liquid chromatography-high resolution mass spectrometryPhytochem Anal.(2012 Sep-Oct)
25.^Audibert L, Fauchon M, Blanc N, Hauchard D, Gall EAPhenolic compounds in the brown seaweed Ascophyllum nodosum: distribution and radical-scavenging activitiesPhytochem Anal.(2010 Sep-Oct)
27.^DaSilva E, Jensen ABenthic marine and blue-green algal species as a source of cholineJ Sci Food Agric.(1973 Jul)
29.^Kundel M, Thorenz UR, Petersen JH, Huang RJ, Bings NH, Hoffmann TApplication of mass spectrometric techniques for the trace analysis of short-lived iodine-containing volatiles emitted by seaweedAnal Bioanal Chem.(2012 Apr)
30.^Hartung J, Brücher O, Hach D, Schulz H, Vilter H, Ruick GBromoperoxidase activity and vanadium level of the brown alga Ascophyllum nodosumPhytochemistry.(2008 Nov)
35.^Terpend K, Bisson JF, Le Gall C, Linares EEffects of ID-alG™ on weight management and body fat mass in high-fat-fed ratsPhytother Res.(2012 May)
36.^Apostolidis E, Karayannakidis PD, Kwon YI, Lee CM, Seeram NPSeasonal variation of phenolic antioxidant-mediated α-glucosidase inhibition of Ascophyllum nodosumPlant Foods Hum Nutr.(2011 Nov)
38.^Nakano K, Kim D, Jiang Z, Ueno M, Okimura T, Yamaguchi K, Oda TImmunostimulatory activities of the sulfated polysaccharide ascophyllan from Ascophyllum nodosum in in vivo and in vitro systemsBiosci Biotechnol Biochem.(2012)
40.^O'Sullivan AM, O'Callaghan YC, O'Grady MN, Queguineur B, Hanniffy D, Troy DJ, Kerry JP, O'Brien NMAssessment of the ability of seaweed extracts to protect against hydrogen peroxide and tert-butyl hydroperoxide induced cellular damage in Caco-2 cellsFood Chem.(2012 Sep 15)