Effect of Chilled Ageing Conditioning at 4°C in Lamb Longissimus Dorsi Muscles on Water-Soluble Flavour Precursors as Revealed by a Metabolomic Approach
Table 1
Identification of significantly different metabolites in lamb samples using GC × GC-TOF/.
Metabolite name
RT
Mass
Similarity
VIP
value
FC
0 d versus 4 d
Nicotinoyl-glycine
7.28
207
912
1.26
0.05
1.34
Pyruvic acid
7.46
174
885
1.56
0.04
0.64
Hydroxylamine
8.29
146
870
1.74
<0.01
1.21
3-Hydroxybutyric acid
8.64
117
925
1.45
0.02
0.70
Glycerol
9.91
205
933
1.36
0.04
1.26
N-Epsilon-acetyl-L-lysine
10.13
200
912
1.75
<0.01
0.75
Succinic acid
10.49
247
899
1.80
<0.01
1.49
D-Glyceric acid
10.62
189
917
2.26
<0.01
2.36
Methionine
13.32
176
797
1.30
0.04
1.49
Glucose-1-phosphate
16.95
217
900
1.26
0.05
1.20
Tyrosine
17.21
226
904
1.33
0.04
0.73
Citric acid
17.79
273
910
1.15
0.05
1.51
Hypoxanthine
18.05
265
797
1.07
<0.01
1.93
N,N-Dimethyl-P-phenylenediamine
22.91
265
912
1.35
0.01
15.20
Fructose-6-phosphate
24.03
459
914
1.86
<0.01
1.70
Inosine
26.03
230
913
1.40
0.04
1.36
4 d versus 8 d
Lactic acid
7.40
117
825
1.87
<0.01
0.94
Maleamate
7.89
151
797
1.56
<0.01
0.87
Methylmalonic acid
8.37
218
721
1.86
<0.01
0.86
Valine
9.31
144
918
1.42
0.02
1.52
N-Epsilon-acetyl-L-lysine
10.13
200
912
1.56
0.01
0.78
Isoleucine
10.25
158
908
1.41
0.03
1.56
D-Glyceric acid
10.62
189
917
1.28
0.04
1.42
Threonine
11.36
219
904
1.38
0.03
1.33
N-Alpha-acetyl-L-ornithine
12.49
154
912
1.42
0.03
0.89
Aminomalonic acid
12.54
218
778
1.40
0.03
1.34
Aspartate
13.21
232
701
1.62
0.02
1.90
Methionine
13.32
176
797
1.95
<0.01
2.66
Phenylalanine
14.97
218
702
1.53
0.02
2.03
Tyrosine
17.21
226
904
2.03
<0.01
1.82
O-Phosphorylethanolamine
17.23
73
766
1.59
0.01
1.28
Hypoxanthine
18.05
265
797
1.44
0.03
1.14
N-Acetyl-beta-D-mannosamine
21.98
202
912
1.99
<0.01
4.66
Inosine
26.03
230
913
2.14
<0.01
1.51
RT = retention time; FC = fold change. The values of FC are mean value of peak area obtained from day 4 group/mean value of peak area obtained from day 0 group, day 8 group/day 4 group, respectively.
