Table 1. Different composition in neck meats from donkey, swine, bovine, and sheep
Molecular formula
Possible substance
Retention index DB-5-FID1
Retention index DB-1701-FID2
C
2
H
4
O
Acetaldehyde
439
491
C
3
H
6
O
Propanal
465
559
C
3
H
8
O
2-Propanol
490
593
C
4
H
8
O
2-Methylpropanal
516
636
C
5
H
10
O
3-Methylbutanal
651
741