Nutritional composition of tubifex tubifex Müller,1774 (Annelidae)

Abstract

Nutritional compositon of Tubifex tubifex Müler, 1774 (Annelidae) was investigated. Percentage crude protein, lipid, ash and moisture content of T. tubifex were 11.02+0.58, 2.14+0.06,1.83+0.16 and 18.78+0.83 recpectively. Total fatty acid content was 7.28 mg/100 mg dry weight and $omega$ -3 (Cl 8:3n3 and C20:5n3) and $omega$ -6 (Cl 8:2n6c and C20:4n6) fatty acids composed 18%, 22% of the total, respectively. C22:6n3 (DHA) were not present in the sample. The most abundant amino acids (amino acid g/100 g protein) were lysine (6.54±0.12), leucine (6.52±0.13) fallowed by arganine (5.39±0.04), valine (4.92±0.09), treonine (4.81±0.09), phenylalanine (4.36±0.09), isoleucine (4.31±0.08), tyrosine (2.74±0.07), histidine (2.67+0.03) and methionine (1.82±0.04). Total carotenoid level was measured as 15.02±0.80 mg/kg.

Özet

Tubifeks (Tubifex tubifex Müler, 1774, Annelidae)'in besin kompozisyonu araştırılmıştır. % olarak ham protein 11.0210.58, lipit 2.14±0.06, kül 1.83±0.16 ve kuru madde 18.78±0.83 olarak saptanmıştır. Toplam yağ asidi miktarı 7.28 mg/100mg kuru ağırlık olup bunun %18'ini $omega$ -3 (C18:3n3 ve C20:5n3) ve %22'sini $omega$ -6 (C18:2n6c ve C20:4n6) serisi yağ asitleri oluşturmaktadır. C22:6n3 (DHA)'e ise rastlanmamıştır. Esansiyel amino asitlerinden en fazla bulunanı (amino asit g/100 g protein) lizin (6.54±0.12) ve lösin (6.52±0.13) olup bunu sırasıyla arjinin (5.39±0.04), valin (4.92±0.09), treonin (4.81±0.09), fenilalanin (4.36±0.09), isolösin (4.31±0.08), tiyrosin (2.74±0.07), histidin (2.67+0.03) ve metionin (1.82±0.04) izlemiştir. Total karotenoyit miktan ise 15.02±0.80 mg/kg olarak belirlenmiştir.