Methods for treating tobacco and tobacco-derived materials to reduce nitrosamines
US11278050B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2018 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Apr 10, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D1/045
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method for reducing the content of nitrosamines in a tobacco material is provided herein, the method involving the steps of contacting a tobacco material with a treatment solution so as to form a treatment composition containing, in addition to the tobacco material, an acid, a complexing agent, a solvent, and, optionally, a salt, at a pH of about 5.5 or less, to obtain a tobacco material having a tobacco-specific nitrosamine content that is lower than the initial tobacco-specific nitrosamine content. The method can optionally include further processing of the tobacco material. Smoking articles and other tobacco products incorporating such treated tobacco materials are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.