Table 2.
Comparison of Absorbance Readings of Flavorless E-liquid vs. each of the Flavored E-liquids.
| S. gordonii | Flavorless | Tobacco | Menthol | Cinnamon | Strawberry | Blueberry |
|---|---|---|---|---|---|---|
| 1% E-liquid | 0.77 ± 0.07 * | 0.76 ± 0.07 | 0.84 ± 0.07 | 0.65 ± 0.03 | 0.81 ± 0.07 | 0.81 ± 0.07 |
| 3% E-liquid | 0.55 ± 0.03 | 0.57 ± 0.05 | 0.40 ± 0.05 | 0.25 ± 0.05 p < 0.001 |
0.50 ± 0.05 | 0.60 ± 0.05 |
| 5% E-liquid | 0.30 ± 0.03 | 0.33 ± 0.04 | 0.12 ± 0.02 p < 0.01 |
0.04 ± 0.03 p < 0.001 |
0.29 ± 0.03 | 0.31 ± 0.03 |
| S. intermedius | Flavorless | Tobacco | Menthol | Cinnamon | Strawberry | Blueberry |
| 1% E-liquid | 1.16 ± 0.04 | 1.23 ± 0.03 | 1.15 ± 0.04 | 0.38 ± 0.08 p < 0.001 |
1.16 ± 0.04 | 1.21 ± 0.03 |
| 3% E-liquid | 1.04 ± 0.04 | 1.00 ± 0.04 | 0.89 ± 0.06 | 0.07 ± 0.03 p < 0.001 |
0.96 ± 0.06 | 1.05 ± 0.03 |
| 5% E-liquid | 0.70 ± 0.04 | 0.63 ± 0.07 | 0.46 ± 0.04 | 0.07 ± 0.04 p < 0.001 |
0.55 ± 0.10 | 0.69 ± 0.05 |
| S. mitis | Flavorless | Tobacco | Menthol | Cinnamon | Strawberry | Blueberry |
| 1% E-liquid | 0.48 ± 0.03 | 0.54 ± 0.05 | 0.49 ± 0.03 | 0.37 ± 0.06 | 0.54 ± 0.05 | 0.52 ± 0.05 |
| 3% E-liquid | 0.43 ± 0.03 | 0.39 ± 0.01 | 0..33 ± 0.02 p < 0.05 |
0.14 ± 0.03 p < 0.001 |
0.39 ± 0.02 | 0.40 ± 0.02 |
| 5% E-liquid | 0.28 ± 0.03 | 0.25 ± 0.03 | 0.09 ± 0.02 p < 0.001 |
0.05 ± 0.03 p < 0.001 |
0.26 ± 0.03 | 0.27 ± 0.02 |
| S. oralis | Flavorless | Tobacco | Menthol | Cinnamon | Strawberry | Blueberry |
| 1% E-liquid | 0.68 ± 0.02 | 0.72 ± 0.02 | 0.58 ± 0.02 | 0.35 ± 0.03 p < 0.001 |
0.74 ± 0.03 | 0.65 ± 0.05 |
| 3% E-liquid | 0.44 ± 0.02 | 0.47± 0.02 | 0.33 ± 0.02 p < 0.01 |
0.15 ± 0.02 p < 0.001 |
0.52 ± 0.03 | 0.49 ± 0.02 |
| 5% E-liquid | 0.32 ± 0.03 | 0.30 ± 0.03 | 0.11 ± 0.03 p < 0.001 |
0.04 ± 0.03 p < 0.001 |
0.20 ± 0.01 | 0.33 ± 0.04 |
| Mixed Species # | Flavorless | Tobacco | Menthol | Cinnamon | Strawberry | Blueberry |
| 1% E-liquid | 0.67 ± 0.03 | 0.71 ± 0.04 | 0.61 ± 0.04 | 0.45 ± 0.04 p < 0.001 |
0.70 ± 0.03 | 0.75 ± 0.02 |
| 3% E-liquid | 0.50 ± 0.03 | 0.43 ± 0.02 | 0.27 ± 0.03 p < 0.001 |
0.15 ± 0.03 p < 0.001 |
0.44 ± 0.03 | 0.51 ± 0.03 |
| 5% E-liquid | 0.36 ± 0.04 | 0.25 ± 0.03 | 0.31 ± 0.02 p < 0.001 |
−0.14 ± 0.01 p < 0.001 |
0.21 ± 0.03 p < 0.01 |
0.30 ± 0.02 |
* All values expressed as mean ± SEM of absorbance (n = 10 to 24). # S. gordonii, S. intermedius, S. mitis, and S. oralis mixed at a 1:1:1:1 ratio.