Table 1 Changes of muscle quality of silver carp during transportation
Transportation time | 3 h | 6 h | 12 h | 24 h |
|---|---|---|---|---|
Proximate composition | ||||
 Moisture/% | 80.45 ± 0.24a | 80.56 ± 0.23a | 80.80 ± 0.22a | 80.92 ± 0.15a |
 Crude protein/% | 18.68 ± 0.26a | 18.29 ± 0.02a | 17.85 ± 0.22b | 17.70 ± 0.26b |
 Crude lipid/% | 2.63 ± 0.29a | 2.56 ± 0.21a | 2.49 ± 0.28a | 2.08 ± 0.29a |
 Ash/% | 1.11 ± 0.04a | 1.13 ± 0.05a | 1.16 ± 0.08a | 1.19 ± 0.07a |
Lactic acid and muscle glycogen | ||||
 pH | 7.11 ± 0.07a | 6.98 ± 0.08b | 6.78 ± 0.09c | 6.66 ± 0.10d |
 LD /(mmol/g protein) | 0.057 ± 0.004d | 0.082 ± 0.010c | 0.097 ± 0.007b | 0.131 ± 0.006a |
 GLY/(mg/g) | 0.77 ± 0.05a | 0.42 ± 0.03b | 0.36 ± 0.02c | 0.32 ± 0.03c |
Physical properties | ||||
 Shear force | 412.40 ± 14.62a | 379.30 ± 12.35b | 359.10 ± 12.95c | 333.10 ± 11.99d |
 L* | 48.11 ± 1.48a | 45.52 ± 0.79b | 43.56 ± 0.78c | 41.02 ± 0.56d |
 a* | −0.20 ± 0.13c | 0.37 ± 0.30ab | 0.47 ± 0.17a | 0.26 ± 0.24b |
 b* | −1.83 ± 0.85a | −2.53 ± 0.72bc | −2.11 ± 0.64ab | −2.83 ± 0.41c |
 W | 48.07 ± 1.46a | 45.45 ± 0.79b | 43.52 ± 0.78c | 40.95 ± 0.57d |
 WHC | 81.00 ± 1.87a | 77.73 ± 1.32b | 74.20 ± 2.98c | 70.87 ± 2.17d |
ATP and its related metabolites | ||||
 ADP/(mg/100 g) | 11.58 ± 0.87a | 9.68 ± 0.65b | 9.11 ± 0.16bc | 8.51 ± 0.53c |
 AMP/(mg/100 g) | 17.40 ± 0.80a | 15.16 ± 0.56b | 11.88 ± 0.38c | 9.46 ± 0.59d |
 IMP/(mg/100 g) | 265.10 ± 0.41d | 280.43 ± 1.04c | 291.67 ± 1.17b | 300.43 ± 1.46a |
 HxR/(mg/100 g) | 88.70 ± 1.01c | 111.09 ± 0.37a | 102.49 ± 0.73b | 85.36 ± 0.79d |
 Hx/(mg/100 g) | 9.59 ± 0.62bc | 9.20 ± 0.89c | 10.40 ± 0.98b | 11.52 ± 0.40a |
 Total amount/(mg/100 g) | 392.36 ± 3.61c | 425.55 ± 3.33a | 425.55 ± 3.32a | 415.27 ± 3.67b |