# Effect of Leaf Grade on Taste and Aroma of Shaken Hunan Black Tea
## 3 Results
### Analysis of Aroma Compounds
#### 3.3.1 Analysis of Aroma Compounds Identified by GC-MS
** & **Compounds** & **RI** & **CAS** & **First Grade** & **Second Grade** & **Third Grade** & **Fourth Grade** \\ \hline
41 & trans,trans,trans-24-Decidental & 43,884 & 251528-64 & 422.78 \(\pm\) 35.49 & 649.08 \(\pm\) 98.62 & 1294.86 \(\pm\) 76.27 & 1309.81 \(\pm\) 72.32 \\
42 & trans-2-Decidental & 45,830 & 53448-47.0 & 581.7 \(\pm\) 4.29 & 597.91 \(\pm\) 58.97 & 547.05 \(\pm\) 13.28 & 570.79 \(\pm\) 381.33 \\
43 & cis-3 [PERSON] & 46,586 & 31501-11.8 & 2454.61 \(\pm\) 23.61 & 2909.02 \(\pm\) 212.96 & 607.67 \(\pm\) 439.71 & 2410.41 \(\pm\) 186.57 \\
44 & Isamone & 47,206 & 4888-10.8 & 3986.85 \(\pm\) 47.77 & 4256.41 \(\pm\) 10.36 & 2539.89 \(\pm\) 58.99 & \(\pm\) 58.99 \\
45 & Isamone & 50,152 & 25549-2.2 & 0.0 \(\pm\) 0.216 & 2108.35 & 2106.59 & \(\pm\) 0.0 \\
46 & [PERSON] & 46,725 & 6378-64.0 & 6119.87 \(\pm\) 87.136 & 1346.61 \(\pm\) 1610.00 \(\pm\) 58.74 & 1385.18 \(\pm\) 213.38 & 899.99 \(\pm\) 0.00 \\
47 & trans-2 Heegard Desanoate & 46,85 & 35708-60.0 & 647.55 \(\pm\) 97.966 & 1201.48 \(\pm\) 1316.00 \(\pm\) 58.78 & 5789.39 \(\pm\) 58.99 & \(\pm\) 0.00 \\
48 & DeMexan & 47,466 & 1125-54.9 & 257.24 \(\pm\) 116.02 & 2955.43 \(\pm\) 132.27 & 2963.43 \(\pm\) 76.96 & 381.1 \(\pm\) 29.84 \\
49 & Isoport Desanoate & 48,461 & 944.62 & 0.0 \(\pm\) 0.0 & 589.69 \(\pm\) 31.11 & 542.12 \(\pm\) 12.23 & 296.2 \(\pm\) 8.33 \\
50 & Preemptly butyrate & 48,645 & 1015-24.6 & 228.18 \(\pm\) 18.96 & 3221.71 \(\pm\) 55.51 & 346.33 \(\pm\) 43.47 & 141.9 \(\pm\) 43.66 \\
51 & trans-2-Decidental & 49,490 & 3074-85.5 & 687.5 \(\pm\) 0.41 & 288.14 \(\pm\) 10.84 & 391.84 \(\pm\) 22.55 \\
52 & 1-Decidental & 49,498 & 1125-54.8 & 793.52 \(\pm\) 44.55 & 941.14 \(\pm\) 12.98 & 105.37 \(\pm\) 44.08 & 2202.5 \(\pm\) 57.16 \\
53 & Indeciant & 50,467 & 1086-19.8 & 205.26 \(\pm\) 60.00 & 1889.24 \(\pm\) 24.47 & 207.86 \(\pm\) 43.97 & 297.45 \(\pm\) 39.38 \\
54 & cis-3 Heegard Desanoate & 51,643 & 25125-64.7 & 177.27 \(\pm\) 537.51 & 5182.02 \(\pm\) 22.89 & 2072.15 \(\pm\) 22.070 & 1071.09 \(\pm\) 56.64 \\
55 & Royal Desanoate & 51,773 & 4798-64.4 & 38.81 \(\pm\) 8.55 & 1989.27 \(\pm\) 23.59 & 208.44 \(\pm\) 47.06 & 108.28 \(\pm\) 22.15 \\
56 & trans-2 Heegard Desurable & 51,88 & 7884-10.8 & 0.0 \(\pm\) 0.0 & 767.57 \(\pm\) 13.54 & 1002.42 \(\pm\) 129.00 & \(\pm\) 20.1 \(\pm\) 1.58 \\
57 & 2-Phenetly resemblance & 52,689 & 6209-37.5 & 27.86 \(\pm\) 3.39 & 438.42 \(\pm\) 4.25 & 433.57 \(\pm\) 7.75 & 49.99 \(\pm\) 0.00 \\
58 & Methyl jann  
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline
**No. ** & **Compounds** & **RI** & **CAS** & **First Grade** & **Second Grade** & **Third Grade** & **Fourth Grade** \\ \hline CDVs & & & & & & & & & \\
80 & 6-Methyl-5-Dapstra-2-one & 18.909 & 110-93-0 & 247.3 \(\pm\) 5.66 & 289.98 \(\pm\) 9.84 & 483.91 \(\pm\) 91.69 & 286.76 \(\pm\) 93.37 \\
81 & 22.6-Timently cyclohexanone & 22.989 & 2408-37-9 & 132.84 \(\pm\) 3.47 & 174.37 \(\pm\) 13.96 & 275.01 \(\pm\) 13.45 & 223.36 \(\pm\) 42.31 \\
82 & trans-48-Dimethyl-13.7- & 30.205 & 1995+61-0 & 0 \(\pm\) 0 & 90.08 \(\pm\) 0.02 & 3128.87 \(\pm\) 7.37 & 164.34 \(\pm\) 9.93 \\  
is-Linden Orland}\) & 34.844 & 14049-11-7 & 57.58 \(\pm\) 16.0