. 2022 Mar 13;12(3):242. doi: 10.3390/metabo12030242

Table 2.

Changes in energy metabolism of beef LL muscle during postmortem aging at 4 °C (d 0, 0.5, 1, 2, 3, 5, and 7).

Traits	0 d	0.5 d	1 d	2 d	3 d	5 d	7 d
Glycogen (mg·g⁻¹)	5.58 ± 0.09 ^a	4.63 ± 0.07 ^b	3.72 ± 0.07 ^c	2.19 ± 0.1 ^d	2.03 ± 0.08 ^de	1.91 ± 0.09 ^e	1.89 ± 0.12 ^e
Lactic acid (ng·mL⁻¹)	100.67 ± 11.68 ^c	118.33 ± 12.50 ^c	172 ± 11.00 ^b	231.67 ± 12.10 ^a	231 ± 12.77 ^a	225 ± 10.54 ^a	217 ± 15.39 ^a
Free glucose (mmol·L⁻¹)	9.39 ± 0.07 ^a	8.33 ± 0.07 ^b	7.90 ± 0.14 ^c	6.48 ± 0.1 ^e	6.39 ± 0.15 ^e	6.31 ± 0.13 ^e	6.26 ± 0.11 ^e
ATP (μmol·g⁻¹)	3.53 ± 0.08 ^a	2.72 ± 0.09 ^b	1.98 ± 0.11 ^c	0.77 ± 0.12 ^d	0.66 ± 0.12 ^d	0.57 ± 0.11 ^d	0.51 ± 0.14 ^d
ADP (μmol·g⁻¹)	4.52 ± 0.1 ^a	2.60 ± 0.09 ^b	1.36 ± 0.08 ^c	0.49 ± 0.12 ^d	0.36 ± 0.11 ^d	0.30 ± 0.10 ^d	0.29 ± 0.10 ^d
AMP (μmol·g⁻¹)	0.3 ± 0.03 ^a	0.20 ± 0.04 ^b	0.21 ± 0.03 ^b	0.19 ± 0.03 ^b	0.15 ± 0.04 ^b	0.14 ± 0.04 ^b	0.14 ± 0.01 ^b

^a–^e Means without common superscripts in a row within are different (p < 0.05).