Biology and Life Sciences

Biology and Life Sciences

Amino acids in some seaweeds from Red Sea Coast – Egypt

Pages: 10  ,  Volume: 23  ,  Issue: 1 , February   2019
Received: 03 Mar 2019  ,  Published: 04 March 2019
Views: 146  ,  Download: 0


# Author Name
1 Mohamed Ali Deyab
2 Fatma Mohamed Elnabway Ward


Seaweeds form an important renewable source in the marine environment and have been known as a source of natural nutritive compounds such as free amino acids. For that purpose, this study aimed to investigate the amino acids contents of some brown (Cystoseira trinodis, Saragassum muticum, and Turbinaria ornata), red (Laurencia papillosa, Jania rubens, and Coralina officinalis), and green seaweeds (Caulerpa racemose, Ulva lactuca, and Halimeda tuna). Amino acids were analyzed using an LC 3000 eppendorf / Biotronik amino acid analyzer. Results revealed that the total amino acid content ranged from 11.84 ± 0.55 mg g-1 DW in L. papillosa to 33.43 ± 1.29 mg g-1 DW in U. lactuca. L-methionine and threonine were the major essential amino acids (EAAs) in Phaeophyta, and Chlorophyta species, respectively, whereas in Chlorophyta species, the major EAA was varied as L-lysine, L-leucine, and L-valine in C. racemose, U. lactuca, and H. tuna, respectively. In all the tested species, L-glutamic and L-aspartic acids constituted together a large part of the amino acid content forming 16.3 - 34.8% of total amino acids. Among the nine seaweeds, U. lactuca contained the highest amounts of EAAs (17.4 ± 0.73 mg g-1 DW). The amino acids compositions of seaweeds are highly influenced by seaweeds classes and species. The high content of EAAs in the tested species made them candidates for nutritional and pharmaceutical applications.



Adebiyi, A.P., Jin, D., Ogawa, T., and Muramoto, K. (2005). Acid Hydrolysis of Protein in a Microcapillary Tube for the Recovery of Tryptophan, Bioscience, Biotechnology and Biochemistry, Vol.69, Issue (1), pp. 255-257.

Anantharaman, P., Karthikaidevi, G., Manivannan, K., Thirumaran, G., and Balasubramanian, T. (2010). Mineral composition of marine macroalgae from Mandapam coastal regions; southeast coast of India, Recent Research Science and Technology, Vol. 2, Issue 10, pp. 66-71.

Carneiro, J.G., Rodrigues, J.A., Teles, F.B., Cavalcante, A.B., and Benevides, N.M. (2014). Analysis of some chemical nutrients in four Brazilian tropical seaweeds, Acta Scientiarum Biological Sciences, Vol. 36, Issue 2, pp. 137-145.

Croteau, R., Kutchan, T.M., and Lewis, N.G. (2000). Natural products (secondary metabolites), In: Buchanan, B., Gruissem, W., Joneas, R. (eds), Biochemistry and Molecular Biology of Plants, American Society of Plant Biologists, Rockville, pp. 1250-1318.

Dawczynski, C., Schubert, R., and Jahreis, G. (2007). Amino acids, fatty acids, and dietary fibre in edible seaweed products, Food Chemistry, Vol. 103, Issue 3,  pp. 891-899.

Fleurence, J. (1999). Seaweed proteins: biochemical nutritional aspects and potential uses, Trends in Food Science and Technology, Vol. 10, Issue 1, pp. 25-28.

Fleurence, J., Le Coeur, C., Mabeau, S., Maurice, M., and Landrein, A. (1995). Comparison of different extractive procedures from the edible seaweeds Ulva rigida and Ulva rotundata, Journal of Applied Phycology, Vol. 7, Issue 6, pp. 577-582.

Gressler, V., Yokoya, N.S., Fujii, M.T., Colepicolo, P., Filho, J.M., Torres, R.P., and Pinto, E. (2010). Lipid, fatty acid, protein, amino acid and ash contents in four Brazilian red algae species, Food Chemistry, Vol. 120, Issue 2, pp. 585-590.

Ismail, G.A. (2016). Biochemical composition of some Egyptian seaweeds with potent nutritive and antioxidant properties, Food Science and Technology, Vol. 37, Issue 2, pp. 294-302.

Kumar, V.V., Kaladharan, P. (2007). Amino acids in the seaweeds as an alternate source of protein for animal feed, Journal of the Marine Biological Association India, Vol. 49, Issue 1, pp. 35-40.

Kumari, P., Kumar, M., Gupta, V., Reddy, C.R.K., and Jha, B. (2010). Tropical marine macro algae as potential sources of nutritionally important PUFAs, Food Chemistry, Vol.120, Issue 3, pp. 749–757.

Lourenço, S.O., Barbarino, E., De-Paula, J.C., Pereira, S.L., and Marquez, U.M. (2002). Amino acid composition, protein content and calculation of nitrogen-to-protein conversion factors for 19 tropical seaweeds, Phycological Research, Vol. 50, Issue 3, pp. 233-241.

Mabeau, S., Cavaloc, E., Fleurence, J., and Lahaye, M. (1992). New seaweed based ingredients for the food industry, International Food Ingredients, Vol. 3, pp. 38-45.

Ochiai, Y., Katsuragi, T., and Hashimoto, K. (1987). Proteins in three seaweeds: “Aosa” Ulva lactuca, “Arame” Eisenia bicyclis, and “Makusa” Gelidium amansii, Bulletin of the Japanese Society of Scientific Fisheries, Vol. 53, Issue 6, pp. 1051-1055.

Ortiz, J., Romero, N., Robert, P., Araya, J., Lopez-Hernández, J., Bozzo, C.E., Navarrete, C.E., Osorio, A., and Rios, A. (2006). Dietary fiber, amino acid, fatty acid and tocopherol contents of the edible seaweeds Ulva lactuca and Durvillaea Antarctica, Food Chemistry, Vol. 99, Issue 1, pp. 98-104.

Qasim, R. (1991). Amino acid composition of some common seaweed, Pakistan Journal of Pharmaceutical Sciences, Vol. 4, Issue 1, pp. 49-54.


Wong, K.H., and Cheung, P.C.K. (2000). Nutritional evaluation of some subtropical red and green seaweed Part-I. Proximate composition, amino acid profiles and some physico-chemical properties, Food Chemistry, Vol. 71, Issue 4, pp. 475-482.