# Dietary Compounds Influencing the Sensorial, Volatile and Phytochemical Properties of Bovine Milk
## 2 Results and Discussion
### Volatile Analyses (Feed, Raw and Pasteurized Milk)
** & **Grass** & **Grass/Clover TMR** & \(p\)**-Value** \\ \hline
**Aldehyde** & & & & & & & \\
2-Methyl lutanal & 700 & 700 & 96-17-3 & \(6.25\times 10^{8}\) & \(2.03\times 10^{8}\) & \(6.29\times 10^{8}\) & NS 0.067 \\
3-Methyl lutanal & 690 & 692 & 590-86-3 & \(5.69\times 10^{8}\) & \(7.97\times 10^{8}\) & \(2.28\times 10^{9}\) & *** \(<\)0.001 \\ Acetaldehyde & 449 & 452 & 75-07-07 & \(1.19\times 10^{8}\) & \(2.73\times 10^{8}\) & \(4.38\times 10^{7}\) & *** \(<\)0.002 \\ Butanal & 627 & 622 & 123-72-8 & \(8.78\times 10^{7}\) & \(1.81\times 10^{8}\) & \(0.00\times 00\) & *** \(<\)0.001 \\ Decanal & 1251 & 1256 & 112-31-2 & \(4.39\times 10^{9}\) & \(4.90\times 10^{9}\) & \(2.08\times 10^{9}\) & NS 0.315 \\ Furrural & 870 & 899 & 98-01-1 & \(1.09\times 10^{8}\) & \(4.31\times 10^{7}\) & \(2.20\times 10^{7}\) & *** \(<\)0.017 \\ Heptanal & 941 & 943 & 111-71-7 & \(1.83\times 10^{9}\) & \(2.75\times 10^{9}\) & \(4.26\times 10^{7}\) & *** \(<\)0.004 \\ Hexanal & 837 & 839 & 66-25-1 & \(1.69\times 10^{10}\) & \(3.59\times 10^{10}\) & \(1.15\times 10^{9}\) & *** \(<\)0.001 \\ Nonanal & 1147 & 1150 & 124-19-6 & \(2.60\times 10^{9}\) & \(5.02\times 10^{9}\) & \(2.43\times 10^{8}\) & *** \(<\)0.001 \\ Octanal & 1044 & 1047 & 124-13-0 & \(1.47\times 10^{9}\) & \(2.44\times 10^{9}\) & \(0.00\times 00\) & *** \(<\)0.001 \\ Pentanal & 735 & 733 & 110-62-3 & \(1.49\times 10^{9}\) & \(2.07\times 10^{9}\) & \(0.00\times 00\) & *** \(<\)0.002 \\ Propanal & 526 & 523 & 123-38-6 & \(1.83\times 10^{8}\) & \(4.92\times 10^{8}\) & \(0.00\times 00\) & *** \(<\)0.001 \\ Methanerolein & 570 & 574 & 78-85-3 & \(0.00\times 00\) & \(6.23\times 10^{6}\) & \(0.00\times 00\) & *** \(<\)0.006 \\
**Ketone** & & & & & & & & \\
1-Hydroxy-2-propanone & 734 & 734 & 116-09-6 & \(0.00\times 00\) & \(2.80\times 10^{8}\) & \(4.22\times 10^{7}\) & *** \(<\)0.001 \\
2-Butanone & 638 & 639 & 78-93-3 & \(0.00\times 00\) & \(0.00\times 00\) & \(1.08\times 10^{8}\) & NS 0.080 \\
2-Heptanone & 932 & 936 & 110-43-0 & \(6.22\times 10^{8}\) & \(1.16\times 10^{9}\) & \(2.60\times 10^{8}\) & \(<\)0.011 \\
2-Hexanone & 831 & 834 & 591-78-6 & \(1.10\times 10^{8}\) & \(1.94\times 10^{8}\) & \(0.00\times 00\) & *** \(<\)0.017 \\
2-Nonanone & 1137 & 1140 & 821-55-6 & \(1.18\times 10^{9}\) & \(1.61\times 10^{9}\) & \(0.00\times 00\) & *** \(<\)0.010 \\
2-Pentanone & 728 & 730 & 107-87-9 & \(5.36\times 10^{8}\) & \(6.40\times 10^{8}\) & \(4.79\times 10^{7}\) & *** \(<\)0.027 \\
4-Hydroxy-4-methyl-2-pentanone & 913 & 913 & 123-42-2 & \(4.00\times 10^{9}\) & \(3.50\times 10^{9}\) & \(1.43\times 10^{8}\) & *** \(<\)0.027 \\
6-Methyl-5-hepten-2-one & 1031 & 1034 & 110-93-0 & \(7.89\times 10^{8}\) & \(2.84\times 10^{9}\) & \(1.07\times 10^{9}\) & *** \(<\)0.001 \\ Acetoin & 778 & 778 & 513-86-0 & \(1.33\times 10^{9}\) & \(1.62\times 10^{9}\) & \(2.74\times 10^{8}\) & NS 0.053 \\ Acetone & 532 & 533 & 67-64-1 & \(3.31\times 10^{8}\) & \(2.85\times 10^{5}\) & \(5.43\times 10^{7}\) & *** \(<\)0.001 \\ Acetophenone & 1141 & 1030 & 98-86-2 & \(1.08\times 10^{8}\) & \(1.77\times 10^{8}\) & \(9.55\times 10^{7}\) & NS 0.188 \\ Acetyl valeryl [2,3-heptanedione] & 875 & - & 96-04-8 & \(0.00\times 00\) & \(4.32\times 10^{8}\) & \(0.00\times 00\) & *** \(<\)0.001 \\ Cyclohexanone & 958 & 957 & 108-94-1 & \(1.28\times 10^{9}\) & \(1.33\times 10^{9}\) & \(0.00\times 00\) & *** \(<\)0.017 \\ Methyl Isobutyl Ketone & 781 & 784 & 108-10-1 & \(1.80\times 10^{8}\) & \(0.00\times 00\) & *** \(<\)0.001 \\
**Ester** & & & & & & & \\
2-Methylbutyl acetate & 906 & 906 & 624-41-9 & \(0.00\times 00\) & \(0.00\times 00\) & \(1.44\times 10^{8}\) & NS 0.076 \\
2-Methylbutyl butanoate & 1080 & - & 51115-64-1 & \(0.00\times 00\) & \(8.43\times 10^{8}\) & \(9.70\times 10^{8}\) & *** \(<\)0.005 \\ Amy lisobutyrate (or isomer) & 1121 & - & 2445-729 & \(0.00\times 00\) & \(2.73\times 10^{9}\) & \(2.60\times 10^{10}\) & *** \(<\)0.001 \\ Amy l propionate & 992 & - & 105-68-0 & \(2.59\times 10^{7}\) & \(3.19\times 10^{7}\) & \(6.81\times 10^{8}\) & *** \(<\)0.001 \\ Butyl acetate & 842 & 842 & 123-86-4 & \(0.00\times 00\) & \(0.00\times 00\) & \(9.12\times 10^{8}\) & *** \(<\)0.001 \\ B-Phenylethyl acetate & 1339 & - & 103-45-7 & \(0.00\times 00\) & \(3  
\begin{table}
\begin{tabular}{l c c c c c c c c} \hline \hline
**Compound** & **LRI 1** & **Ref LRI 2** & **CAS No.