# The Effect of the Improvement Technology on the Quality of Midu Pork Roll
## 3 Results and Discussion
### The Effect of Process Improvement in Various Volatile Compounds of MPR
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**NO.** & **Volatile Compounds** & **C** & **T1** & **T2** & **Sig.** \\ \hline  & Alkanes & 5.83 \(\pm\) 0.18 b  & 10.14 \(\pm\) 1.55 a  & 7.00 \(\pm\) 0.54 b  & ** \\
1 & Cyclopropane, ethylidene- & ND & 4.18 \(\pm\) 1.03 a  & 2.74 \(\pm\) 0.32 b  & ** \\
2 & Cyclopropane & 2.20 \(\pm\) 0.21 a  & ND & ** \\
3 & Dodecane, 4-methyl- & 0.18 \(\pm\) 0.23 a  & 0.02 \(\pm\) 0.01 a  & ND & ns \\
4 & Dodecane & 0.80 \(\pm\) 0.07 a  & 0.29 \(\pm\) 0.03 b  & 0.27 \(\pm\) 0.02 b  & ** \\
5 & 2,7-dimethyloctane & 0.24 \(\pm\) 0.03 & ND & ND & ** \\
6 & Tridecane, 5-methyl- & 0.02 \(\pm\) 0.01 ab  & 0.01 \(\pm\) 0.01 b  & 0.12 \(\pm\) 0.09 a  & ns \\
7 & Tridecane, 3-methyl- & 0.09 \(\pm\) 0.01 a  & 0.04 \(\pm\) 0.01 b  & 0.04 \(\pm\) 0.01 b  & ** \\
8 & Tetradecane & 0.10 \(\pm\) 0.01 a  & 0.07 \(\pm\) 0.01 b  & 0.05 \(\pm\) 0.01 b  & ** \\
9 & n-Hexadecane & 0.04 \(\pm\) 0.01 a  & 0.07 \(\pm\) 0.04 a  & 0.05 \(\pm\) 0.01 a  & ns \\
10 & n-Pentadecane & 0.03 \(\pm\) 0.01 b  & 0.06 \(\pm\) 0.01 a  & 0.05 \(\pm\) 0.02 ab  & ns \\
11 & Pentadecane, 3-methyl- & 0.01 \(\pm\) 0.01 & ND & ND & ns \\
12 & Nonane, 3-methyl- & 0.13 \(\pm\) 0.04 a  & 0.05 \(\pm\) 0.01 b  & 0.13 \(\pm\) 0.03 a  & ** \\
13 & Decane & 1.97 \(\pm\) 0.04 a  & 1.00 \(\pm\) 0.14 c  & 1.19 \(\pm\) 0.09 b  & ** \\
14 & 2,2,7,7-Tetramethyloctane & ND & 1.95 \(\pm\) 0.22 a  & 2.11 \(\pm\) 0.11 a  & ** \\
15 & Tridecane & ND & ND & 0.20 \(\pm\) 0.01 & ** \\
16 & Bicyclol[3.1.1]heptane, & 0.03 \(\pm\) 0.01 b  & ND & 0.06 \(\pm\) 0.01 a  & ** \\  & 6,6-dimethyl-2-methylene-, (IS)- & 0.03 \(\pm\) 0.01 b  & ND & 0.06 \(\pm\) 0.01 a  & ** \\  & Alcohols & 34.43 \(\pm\) 2.02 a  & 36.80 \(\pm\) 2.23 a  & 35.30 \(\pm\) 2.26 a  & ns \\
17 & Ethanol & 7.11 \(\pm\) 0.63 a  & 5.07 \(\pm\) 0.51 b  & 4.56 \(\pm\) 0.60 b  & ** \\
18 & Propanol & 0.20 \(\pm\) 0.05 & ND & ND & ** \\
19 & 1,5-hexadiene-3-ol & 0.06 \(\pm\) 0.01 & ND & ND & ** \\
20 & (+)-3-Methyl-2-butanol & 0.22 \(\pm\) 0.16 a  & 0.22 \(\pm\) 0.02 a  & ND & ** \\
21 & Pentanol & 4.78 \(\pm\) 0.37 a  & 5.05 \(\pm\) 0.59 a  & 4.23 \(\pm\) 0.63 a  & ns \\
22 & 1-Pentanol & 0.14 \(\pm\) 0.01 & ND & ND & ** \\
23 & 1-Pentanol, 4-methyl- & ND & 0.01 \(\pm\) 0.01 & ND & ns \\
24 & Trans-3-Hexen-1-ol & 0.16 \(\pm\) 0.01 & ND & ND & ** \\
25 & 4-Hexen-1-ol, (E)- & 8.93 \(\pm\) 0.67 b  & 13.01 \(\pm\) 3.27 a  & 12.90 \(\pm\) 1.48 a  & ns \\
26 & 2-Hepanol & 0.34 \(\pm\) 0.05 a  & 0.17 \(\pm\) 0.02 b  & 0.21 \(\pm\) 0.01 b  & ** \\
27 & 1-Penten-3-ol & 0.06 \(\pm\) 0.01 b  & 0.15 \(\pm\) 0.13 ab  & 0.34 \(\pm\) 0.16 a  & ns \\
28 & (R)-(-)-3-Methyl-2-butanol & ND & 0.24 \(\pm\) 0.02 & ND & ** \\
29 & 5-Hepten-2-ol, 6-methyl- & 2.10 \(\pm\) 0.14 & ND & ND & ** \\
30 & 2-phenyl-2-butanol & 0.02 \(\pm\) 0.01 & ND & ND & ** \\ \hline \hline \end{tabular}
\end{table} 
Table 6: The effect of the improvement on the relative content of volatile compounds (%) in MPR. Figure 2: The total number of volatile compounds in three groups. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**NO. ** & **Volatile Compounds** & **C** & **T1** & **T2** & **Sig.