Table 4.
5’-nucleotides (AMP, IMP, GMP, inosine, and hypoxanthine, g/100 g) and free amino acids (glutamic and aspartic acid, g/100 g) of beef semitendinosus heated at different temperatures and times.
| Temperature | Control | 60 °C | 70 °C | SEM | P Temp (T) | P Time (t) | P T*t | ||
|---|---|---|---|---|---|---|---|---|---|
| Time | 6 h | 12 h | 6 h | 12 h | |||||
| AMP | 0.66 b | 0.53 b | 0.61 b | 1.25 a | 1.44 a | 0.08 | <0.001 | <0.001 | 0.542 | 
| IMP | 46.73 a | 30.94 b | 30.21 b | 35.84 ab | 39.71 ab | 2.95 | 0.024 | 0.061 | 0.443 | 
| GMP | 5.41 b | 4.22 b | 6.98 b | 6.04 b | 12.38 a | 0.89 | 0.001 | <0.001 | 0.059 | 
| Inosine | 1.32 c | 2.90 b | 3.95 a | 1.45 c | 1.74 c | 0.14 | <0.001 | <0.001 | 0.012 | 
| Hypoxanthine | 0.85 c | 1.24 a | 1.13 ab | 0.82 c | 0.90 bc | 0.07 | <0.001 | 0.968 | 0.188 | 
| Glutamic Acid | 0.66 | 0.62 | 0.61 | 0.66 | 0.59 | 0.03 | 0.899 | 0.172 | 0.125 | 
| Aspartic Acid | 0.57 | 0.54 | 0.54 | 0.60 | 0.55 | 0.03 | 0.261 | 0.768 | 0.379 | 
a–c Different superscript letters within the same row mean significantly different between treatments (p < 0.05). SEM: standard error of mean (n = 5). AMP: adenosine-5’-monophosphate; IMP: inosine-5’-monophosphate; GMP: guanosine-5’-monophosphate.