Total lipid, cholesterol, and fatty acids of farmed freshwater prawn (Macrobrachium rosenbergii) and wild marine shrimp (Penaeus brasiliensis, Penaeus schimitti, Xiphopenaeus kroyeri)

Total lipid, cholesterol, and fatty acids were determined in freshwater prawn (Macrobrachium rosenbergii) and in wild marine shrimp (Penaeus brasiliensis, Penaeus schimitti, Xiphopenaeus kroyeri). The concentration of total lipid was 0.9-1.0 g/100 g in the marine species and 1.1 g/100 g in freshwater M. rosenbergii. No significant difference was observed in terms of origin of samples and size. Cholesterol levels ranged from 114 in Penaeus brasiliensis to 139 mg/100 g in M. rosenbergii. Size had a significant influence in P. brasiliensis but not in P. schimitti. Shrimp (same species and size) from two states did not differ significantly. The principal fatty acids in the marine shrimp were C16:0, C20:5n-3, C22:6n-3, C18:1n-9, C18:0, 16:1n-7, 20:4n-6, and 18: 1n-7. In the freshwater prawn M. rosenbergii, the major fatty acids were C16:0, C20:5n-3, C18:1n-9, C18:0, C22: 6n-3, C18:2n-6, C17:0, and C18:1n-7. Quantitatively, M. rosenbergii differed markedly from the other species, followed by Xiphopenaeus kroyeri. In general, origin of samples and size did not have a significant influence. (C) 2001 Academic Press.