Comparison and Evaluation of the Nutritional Components of Antarctic Icefish and Krill
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Abstract:
The nutritional components of Antarctic icefish were analyzed and evaluated by national standard methods, and compared with Antarctic krill. The results showed that the protein content in Antarctic icefish was significantly higher than in Antarctic krill (p<0.05); however, the ash content in Antarctic icefish was much lower (p<0.05). Seventeen amino acids were found in the muscles of Antarctic icefish and krill, and the essential amino acids (EAA) indices were 44.24 and 34.03, respectively. The EAA composition of both the two samples met FAO/ WHO standard. The flavour amino acids content in total amino acids in the muscle of Antarctic icefish and krill was 35.86% and 40.51%. The saturated fatty acids and monounsaturated fatty acids were 33.37% and 41.22% in the muscle of Antarctic icefish, respectively, which were higher than in Antarctic krill (32.60% and 29.75%, respectively). The polysaturated fatty acids content (25.12%) was lower than in Antarctic krill (45.38%). The minerals (Ca, Fe, Zn, Cu) in the muscle of Antarctic icefish was also higher than in Antarctic krill. In conclusion, Antarctic icefish had high nutritional value, which well deserved further exploitation and utilization.
