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The present study investigates the mineral, fatty acid and amino acids composition of E. radiata, V. contectus and L. flammea. All samples analyzed in this study were obtained from Yenagoa in Bayelsa state of Nigeria. Mineral composition was determined by Atomic Absorption Spectrophotometry (AAS), fatty acids were determined by High Performance Liquid Chromatography (HPLC) while amino acids composition was determined by gas chromatography (GC). Eight (8) nutritionally essential minerals were detected in all samples analyzed in this study; the concentration of minerals in order of increasing concentration was Cu>Mn>Mg>Na>Ca>Zn>K>Fe, Cu>Mn>Na>Mg>Ca>Zn>K>Fe and Cu>Mn>Mg>Ca>Na>Zn>Fe>K for E. radiata, V. contectus and L. flammea respectively. Lauric acid, myristic acid, Palmitic acid, Margaric acid, stearic acid, oleic acid, Linoleic acid, arachidic acid and arachidonic acid were detected in varying amounts in all samples. Palmitic acid concentration in E. radiata was the most abundant in all samples while oleic acid concentration in L. flammea was the least. A total of eighteen (18) amino acids were detected in all samples analyzed in this study: glycine, alanine, valine, leucine, isoleucine, serine, tryptophan, threonine, Methionine, phenylalanine, histidine, proline, aspartic acid, glutamic acid, tyrosine, arginine, lysine and Cysteine. In E. radiata, leucine had the highest concentration (21.287mg/100g) while proline was the least (2.854mg/100g); glutamic acid and methionine were the highest and least (19.389mg/100g and 2.996mg/100g respectively) in V. Contectus samples and Histidine and tryptophan were the highest and least respectively (11.639mg/100g and 1.415mg/100g). Aspartate, lysine and histidine were not detected in both samples. From the findings of this study, the samples analyzed in this study are good sources of fatty acids, amino acids and nutritionally essential minerals hence their consumption is encouraged.
2. Benson T. Cross-sectoral coordination failure: How significant a constraint in national effort to tackle malnutrition in Africa? Food Nutr Bull. 2007;28(2):323- 330.
3. WHO/FAO. Protein and amino acid requirement in human nutrition; 2007.
(Accessed 14 March, 2019)
4. Olusanya JO. Essentials of food and nutrition. 2nd ed. Lagos: Apex Books Limited; 2008.
5. APHA. Direct air-acetylene flame method, Standard Methods for the examination of metals, 20th ed. USA: Baltimore, Maryland; 1998.
6. Horwitz W (ed.) Official Methods of Analysis of AOAC. 18th ed. USA: Washington DC; 2006.
7. Akpang EI, Oscar VE. Proximate composition and mineral contents of edible part of four species of shellfishes from the Calabar River, Nigeria. Ann Res Rev Biol. 2018;26(1):1-10.
8. Ekpo EA, George UU, Edet M. Impacts of water pollution with heavy metal on the tissue of Egeria radiata (Bivalvia: Tellinacea: Donacidae) (Lammark, 1804) obtained from Calabar River, Cross River State, Nigeria. Nat. Sci. 2015;13(8):36- 39.
9. Nwabueze AA, Oghenevwairhe E. Heavy metal concentrations in the West African clam, Egeria radiata (Lammark, 1804) from McIver market, Warri, Nigeria. Int. J. Sci Nat. 2012;3(2):309-315.
10. Kadanga B. Determination of some heavy metals and investigation of nutritional composition in three species of snails (Archatina fulica, Archachatina marginata and Limicolaria flammea). M.Sc dissertation submitted to the department of chemistry Ahmadu Bello University, Zaria, Nigeria; 2015.
11. Adeyeye EI. Lipid Composition of three different types of land snails consumed in Nigeria. Global J. Sci. Frontier Res. Chem. 2012;12(7):8-22.
12. Okuzumi M, Fujii T. Nutritional and functional properties of squid and cuttle fish. 35th Anniversary Commemorative Publica-tion, 2000;223.