Table 1.

Contents of the Compounds Detected in the D₂O Extracts.

Compounds	Content (μmol/g meata)
Amino acids
alanine	0.203 ± 0.036b
carnitine	0.377 ± 0.060
carnosine	0.567 ± 0.134
creatine	1.28 ± 0.24
glutamic acid	0.092 ± 0.012
glutamine	0.360 ± 0.083
isoleucine	0.008 ± 0.003
leucine	0.218 ± 0.038
phenylalanine	0.042 ± 0.006
tyrosine	0.036 ± 0.005
valine	0.070 ± 0.013
Sugars
α-glucose	0.159 ± 0.019
β-glucose	0.180 ± 0.030
Purine derivatives
inosine	0.057 ± 0.013
inosine monophosphate	0.045 ± 0.014
Organic acids
acetic acid	0.115 ± 0.018
fumaric acid	0.043 ± 0.006
lactic acid	2.70 ± 0.47
Alcohol
ethanol	0.056 ± 0.013
glycerol	0.460 ± 0.068
Other compounds
betaine	0.089 ± 0.022

^aSirloin from brand A Black heifers (2-week aging).

^bMean ± standard deviation (n = 5).