The Nutritional Value and Processing Quality of Ctenopharyngodon idellus, Liza haematocheila, and Centropristis striata

Abstract:

In this study, the nutritional components and meat qualities of Ctenopharyngodon idellus, Liza haematocheila, and Centropristis striata were analyzed and compared. The results showed that the weight ratio of head to body of L. haematocheila was 17.09%, which was significantly higher than that of C. striata and C. idellus. The content of soluble and insoluble collagen in C. striata muscle was higher than that of the two other species, which were 0.22 mg/ml and 2.12 mg/ml respectively. The contents of flavor amino acid in C. striata, L. haematocheila, and C. idellus were 44.37%, 32.80%, and 24.50% respectively. As for the total content of six essential amino acids, C. idellus showed the lowest value of 53.31%, the value for L. haematocheila was 57.14%, and C. striata showed the highest value of 62.64%. The fatty acid analysis indicated that the saturated fatty acid (SFA) of L. haematocheila was up to 41.26%, which was significantly higher than that of the other two (P<0.05). The level of poly-unsaturated fatty acids (PUFA) in the muscle of C. striata was the highest (34.58%, P<0.05). The EPA concentration in the muscle of L. haematocheila was 8.27%, and it was not significantly different from that of C. striata. The DHA concentration in the muscle of C. striata was 13.51%, which was significantly higher than that of C. idellus (3.84%) and L. haematocheila (3.02%). The activity of SOD in the muscles of the three species was significantly different, and it was the highest in L. haematocheila and the lowest in C. striata. The content of MDA in the muscle of C. striata was 19.98 nmol/mg that was higher than that in C. idellus and L. haematocheila (P<0.05). In conclusion, the muscle of L. haematocheila had strong antioxidant capability, and this characteristic may contribute to the long-term preservation and food processing quality.