SCIENCE

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Browsing SCIENCE by Subject "(ARCHATINAFULICA,"

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    DETERMINATION OF SOME HEAVY METALS AND INVESTIGATION OF NUTRITIONAL COMPOSITION IN THREE SPECIES OF SNAILS (ARCHATINAFULICA, ARCHACHATINA MARGINATA AND LIMICOLARIAFLAMMEA)
    (2015-10) KADANGA, BEATRICE
    Species of snails Archachatina marginata,Archatinafulica and Limicolaria flammea, and Archachatina marginata were assessed for proximate analysis aimed at establishing their nutritive values. The heavy metals levels of the flesh was also investigated. Analysis of the flesh revealed that the composition of crude protein varied from 34.90+ 0.23 to 36. 75 + 0.22% in all species, Ash content, moisture content, crude lipid, and carbohydrateranged from 6.15+ 0.99 to 16.06 + 0.75%, 9.41+ 0.33 to 27. 89+ 0.52%, 7.29+ 0.63 to 9.99+ 0.15%, 14.71+ 0.17 to 38.18+ 0.66% respectively. Crude fibre was not detected in any of the species.The concentration of zinc, copper, cadmium and lead in the flesh of the snails were in the range of 7.58+ 0.03 to 13.10+ 0.03 mg/kg, 0.99+ 0.01 mg/kg to 3.32+0.01 mg/kg, 0.09+ 0.00 to 0.50+ 0.00 mg/kg, and 0.90+ 0.00 to 2.90+0.00 mg/kg respectively.These values were low and within the WHO permissible limit. Amino acid profile indicates the presence of lysine, Alanine, Histidine, valine, leucine and Phenylalanine Arginine, Aspartic acid, threonine serine, Glutamic acid, proline, Glycine, Cystine, Isoleucine, Leucine and Tyrosine in the snail species. Lysine concentration varied from 15.67-16.00mg/g in all species. Histidine was 2.50.73mg/g, Arginine ranged from 16.11-16.85. Aspartic acid ranged from 9.66 – 10.54mg/g, Threonine concentration ranged from 8.34-9.01mg/g, serine (4.55 – 4.99 mg/g), Glutamic acid (11.64 – 11.94mg/g), proline (5.80–6.26mg/g), Glycine (4.01-4.86 mg/g), Alanine (2.98 – 3.31 mg/g), cystine (0.55-0.69mg/g), valine (7.9 – 8.21mg/g), methionine (1.93 -1.98mg/g), Isoeucine (8.91 – 9.00mg/g), leucine (9.51 – 9.98mg/g), Tyrosine (4.63 – 4.80 mg/g), phenylalanine (6.66 – 7.13 mg/g). Ammonia and Norleucine were not detected in all the snail samples. The result shows that snailcould complement the required trace minor elements needed for proper growth and development in human and hence recommended for regular consumption.