TREATMENT OF TOBACCO

Methods of modifying the tobacco-specific nitrosamine content of a tobacco material are described herein. One exemplary method comprises contacting a tobacco material with a composition comprising salt, sugar, enzyme, lactic acid bacteria, yeast, or a combination thereof to reduce the total bacterial content; curing the tobacco material; and fermenting the tobacco material in the presence of one or more microorganisms. The method can provide a fermented tobacco material having a tobacco-specific nitrosamine content that is reduced relative to a fermented tobacco material that has not been subjected to the disclosed method steps. In certain embodiments, the tobacco-specific nitrosamine content of the fermented tobacco material is no more than that of the cured tobacco material. Tobacco-containing products including such treated tobacco materials are also provided. 本文描述了改变烟草材料的烟草特异性亚硝胺含量的方法。个示例性的方法包括：使烟草材料与包含盐、糖、酶、乳酸菌、酵母或其组合的组合物接触，以减少总细菌含量；烘焙所述烟草材料；和使所述烟草材料在种或多种微生物的存在下发酵。所述方法可提供这样的发酵的烟草材料，该发酵的烟草材料的烟草特异性亚硝胺含量低于未