Species Variations in the Proximate Composition, Amino Acid Profile, and Protein Quality of the Muscle Tissue of Grass Carp, Bighead Carp, Siberian Sturgeon, and Wels Catfish

Table 2

Proximate composition, hydroxyproline level, and energy value of muscles of grass carp, bighead carp, Siberian sturgeon, and wels catfish (mean value ± SD).

	Species
	Grass carp ()	Bighead carp ()	Siberian sturgeon ()	Wels catfish ()
Moisture (%)	78.06^a ± 1.40	73.56^b ± 2.01	69.89^c ± 2.11	78.90^a ± 2.44
Protein (%)	18.25^a ± 0.41	15.98^b ± 0.98	15.69^b ± 0.83	16.24^b ± 0.60
Fat (%)	2.28^a ± 1.0	8.93^b ± 2.31	12.57^c ± 2.20	3.78^a ± 2.09
Ash (%)	1.22^a ± 0.04	1.10^b ± 0.05	1.10^b ± 0.08	0.97^c ± 0.02
Hydroxyproline (%)	0.09^a ± 0.01	0.05^b ± 0.01	0.09^a ± 0.02	0.09^a ± 0.01
Energy value (kcal/100 g)	93.50^a ± 8.72	144.27^b ± 20.58	175.83^c ± 17.75	99.14^a ± 19.41

Mean values in rows marked with different letters differ significantly at .