Nitrate and Nitrite Promote Formation of Tobacco-Specific Nitrosamines via Nitrogen Oxides Intermediates during Postcured Storage under Warm Temperature

Figure 7

Effect of activated carbon (AC) on TSNAs formation in flue-cured tobacco in response to nitrate addition. Note. (1) tobacco (before storage, 4°C), (2) tobacco, (3) tobacco + NaNO₃, (4) tobacco + NaNO₃ + AC 1.0 g, (5) tobacco + NaNO₃ + AC 5.0 g, and (6) tobacco + NaNO₃ + AC 10.0 g, 20 g of flue-cured tobacco, and 0.3 g NaNO₃ (219 mg of ). The , AC, and tobacco were added separately in the vacuum desiccators stored at 45°C for 15 d. Uppercase letters indicate significant differences between the treatments at .

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