# Analysis of Volatile Components of Jasmine and Jasmine Tea during Scenting Process
## 2 Results
### Changes in the Main Aroma Components of Jasmine and Jasmine Tea
#### 2.6.1 Changes in Main Aroma Substances of Jasmine  
As shown in Figure 8A, the amounts of terpenoids in NP reached a maximum of 2531.10 \(\upmu\)g\(\cdot\)L\({}^{-1}\) at 6 h, while the JF and TP reached peaks at 6 h of 886.34 \(\upmu\)g\(\cdot\)L\({}^{-1}\) and 826.07 \(\upmu\)g\(\cdot\)L\({}^{-1}\), respectively. The changes in esters showed a trend of increasing and then decreasing (Figure 8B). The JF reached the maximum value of 7590.07 \(\upmu\)g\(\cdot\)L\({}^{-1}\) at 6 h and the lowest value of 3852.80 \(\upmu\)g\(\cdot\)L\({}^{-1}\) at 14 h. The jasmine of NP and TP reached the maximum value at 6 h, 15269.82 \(\upmu\)g\(\cdot\)L\({}^{-1}\) and 7149.34 \(\upmu\)g\(\cdot\)L\({}^{-1}\), respectively; the lowest values, at 14 h, were 3286.96\(\upmu\)g\({}^{-1}\) and 1102.07 \(\upmu\)g\(\cdot\)L\({}^{-1}\), respectively. From Figure 8C, we could see that JF had the highest amounts of alcohol among those treatments. The TP reached the maximum value at 6 h, 2246.47 \(\upmu\)g\(\cdot\)L\({}^{-1}\). The NP reached the maximum value at 8 h, 2180.61 \(\upmu\)g\(\cdot\)L\({}^{-1}\). The changes in nitrogen-containing compounds showed a trend of increasing and decreasing during the scenting process (Figure 8D). The trends of nitrogen-containing compounds in JF and NP were similar; the highest values, at 8 h, were 886.84 \(\upmu\)g\(\cdot\)L\({}^{-1}\) and 826.20 \(\upmu\)g\(\cdot\)L\({}^{-1}\), respectively, and the lowest values, at 14 h, were 200.87 \(\upmu\)g\(\cdot\)L\({}^{-1}\) and 244.54 \(\upmu\)g\(\cdot\)L\({}^{-1}\). The nitrogen-containing compounds of TP reached a maximum value of 506.61 \(\upmu\)g\(\cdot\)L\({}^{-1}\) at 6 h and a minimum value of 265.87 \(\upmu\)g\(\cdot\)L\({}^{-1}\) at 14 h. As shown in Figure 8E,F, the amounts of oxygen compounds and hydrocarbons rose first and then fell during the scenting process. The maximum amount of oxygen compounds in TP was 92.46 \(\upmu\)g\(\cdot\)L\({}^{-1}\) at 6 h. The maximum amount of hydrocarbons in JF was 198.51 \(\upmu\)g\(\cdot\)L\({}^{-1}\), and the lowest amount in TP was 94.19 \(\upmu\)g\(\cdot\)L\({}^{-1}\). Figure 8: Changes in main aromatic substances of jasmine during the scenting process. (**A**) terpenes. (**B**) esters. (**C**) alcohols. (**D**) nitrogens. (**E**) oxygenates. (**F**) hydrocarbons. 2.6.2. Changes in Main Aroma Substances of Jasmine Tea  
The changes in terpenoids in jasmine tea during the scenting process are shown in Figure 9A. The amounts of terpenoids in NPT increased to 1659.08 ug\(\cdot\)L\({}^{-1}\) at 8 h and then decreased at 12 h to 973.23 ug\(\cdot\)L\({}^{-1}\). The changes in esters showed a trend of increasing and then decreasing (Figure 9B). The amount of esters in NPT increased to 4137.96 ug\(\cdot\)L\({}^{-1}\) at 6 h and decreased to 3437.85 ug\(\cdot\)L\({}^{-1}\) at 14 h. The maximum value of TPT was 3319.03 ug\(\cdot\)L\({}^{-1}\) at 2 h, dropped to 318.34 ug\(\cdot\)L\({}^{-1}\) during 4-8 h, then remained balanced. The changes in alcohols are shown in Figure 9C. The amounts of alcohols in NPT increased to 5387.12 ug\(\cdot\)L\({}^{-1}\) at 2 h and decreased to 3446.69 ug\(\cdot\)L\({}^{-1}\) at 10 h. The amounts of TPT increased to 5559.35 ug\(\cdot\)L\({}^{-1}\) at 4 h, continued to rise to 12041.01 ug\(\cdot\)L\({}^{-1}\) at 12 h, and finally decreased to 8521.66 ug\(\cdot\)L\({}^{-1}\) at 14 h. The changes in nitrogen-containing compound amounts are shown in Figure 9D. The NPT increased to 1017.23 ug\(\cdot\)L\({}^{-1}\) at 4 h, decreased to 588.04 ug\(\cdot\)L\({}^{-1}\) at 10 h, rose to 676.42 ug\(\cdot\)L\({}^{-1}\) at 12 h, then remained stable. After 6 h of TPT, the tea rose to the maximum value of 812.79 ug\(\cdot\)L\({}^{-1}\) then dropped to 530.13 ug\(\cdot\)L\({}^{-1}\) within 12 h and increased to 659.66 ug\(\cdot\)L\({}^{-1}\) later. The changes in oxygenated compounds during the scenting process are shown in Figure 9E.