Table 3. Free amino acid profiles and nucleotides in 1⁺ grade longissimus thoracis muscles from Hanwoo cows and steers

Items	Steer	Cow
Free amino acids (mg/100 g)
Glycine	0.21±0.13	1.08±0.36
Alanine	25.24±1.65	28.73±1.42
Serine	4.45±0.78	6.17±0.53
Proline	2.35±0.09^b	3.17±0.05^a
Glutamic acid	3.18±0.60^b	5.70±0.82^a
Valine	6.13±0.82^b	9.22±0.95^a
Threonine	3.09±0.38^b	4.71±0.39^a
Leucine	7.60±1.32^b	11.90±1.25^a
Isoleucine	3.77±0.63^b	6.55±0.72^a
Aspartic acid	0.37±0.07	0.43±0.07
Lysine	3.80±0.33^b	5.96±0.75^a
Methionine	1.91±0.54	3.52±0.51
Histidine	0.93±0.22^b	2.17±0.26^a
Phenylalanine	4.75±0.67^b	7.46±0.75^a
Arginine	5.43±0.86^b	9.74±0.66^a
Tyrosine	4.56±0.81	6.59±0.70
Asparagine	0.53±0.08^b	1.00±0.10^a
Glutamine	14.15±3.39	10.17±2.05
Tryptophan	0.25±0.16^b	0.90±0.15^a
Nucleotides (μM/g)
Hypoxanthine	1.99±0.14	2.14±0.12
Uridine	0.58±0.04	0.65±0.07
Guanosine monophosphate (GMP)	0.09±0.04	0.07±0.02
Inosine-5′-phosphate (IMP)	2.77±0.07	2.47±0.23

Means within a same row with different superscripts differ significantly p<0.05.