Table 2 The level of NNN, NAT, NAB, NNK, and TSNAs in tobacco leaves during fermentation process
From: Influence of microbiota and metabolites on the quality of tobacco during fermentation
Groups | NNN (ng/g) | NAT (ng/g) | NAB (ng/g) | NNK (ng/g) | TSNAs (ng/g) |
|---|---|---|---|---|---|
Control | 812.73 ± 33.2Gg | 1459.82 ± 84.60Ee | 40.30 ± 0.37Hh | 145.34 ± 8.07Ef | 2458.19 ± 126.36Gf |
25 °C/ 2 weeks | 934.19 ± 31.32Ff | 2060.91 ± 85.57Dd | 63.81 ± 0.39Gg | 242.30 ± 8.13De | 3301.21 ± 125.41Fe |
25 °C/ 4 weeks | 1159.46 ± 33.55Ee | 2274.54 ± 83.56Cc | 72.49 ± 0.36Ff | 293.61 ± 8.41Cd | 3800.10 ± 125.88Ed |
25 °C/ 6 weeks | 1546.99 ± 36.10Bb | 2536.65 ± 88.18ABb | 84.10 ± 0.32Dd | 349.86 ± 8.47ABb | 4517.60 ± 133.06BCb |
35 °C/ 2 weeks | 976.51 ± 36.06Ff | 2069.04 ± 88.04Dd | 72.81 ± 0.35Ff | 246.66 ± 8.22De | 3365.03 ± 132.67Fe |
35 °C/ 4 weeks | 1251.87 ± 35.24Dd | 2394.27 ± 84.81BCbc | 84.34 ± 0.30Dd | 300.26 ± 8.37Cd | 4030.73 ± 128.72DEd |
35 °C/ 6 weeks | 1602.03 ± 39.96Bb | 2694.59 ± 80.05Aa | 90.19 ± 0.35Bb | 354.84 ± 8.07ABab | 4741.66 ± 128.43ABa |
45 °C/ 2 weeks | 1192.84 ± 33.58DEde | 2294.08 ± 89.99Cc | 73.86 ± 0.34Ee | 287.15 ± 8.22Cd | 3847.94 ± 132.12Ed |
45 °C/ 4 weeks | 1439.20 ± 31.50Cc | 2407.34 ± 89.62BCbc | 86.59 ± 0.36Cc | 335.67 ± 8.30Bc | 4268.80 ± 129.78CDc |
45 °C/ 6 weeks | 1685.79 ± 38.24Aa | 2720.40 ± 84.92Aa | 95.80 ± 0.34Aa | 367.12 ± 8.14Aa | 4869.12 ± 131.63Aa |