US20070137664A1 - Process for reducing the level of harmful substances in tobacco leaves - Google Patents
Process for reducing the level of harmful substances in tobacco leaves Download PDFInfo
- Publication number
- US20070137664A1 US20070137664A1 US10/587,521 US58752104A US2007137664A1 US 20070137664 A1 US20070137664 A1 US 20070137664A1 US 58752104 A US58752104 A US 58752104A US 2007137664 A1 US2007137664 A1 US 2007137664A1
- Authority
- US
- United States
- Prior art keywords
- leaves
- temperature
- level
- harmful substances
- reducing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/12—Steaming, curing, or flavouring tobacco
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
Definitions
- the present invention relates to a process for reducing the level of harmful substances in tobacco leaves.
- the tobacco leaves can be processed by conventional methods to produce cigarettes, cigars and similar smoking products that do not cause irritation to the throat or lungs of smokers or contaminate the surrounding environment.
- smokers have a sense of freedom in the oral and pulmonary tracks, and a lowered sense of addiction.
- the leaves are preferably steeped in a water bath at a temperature of between 140° C. and 16° C. for between 6 and 10 hours, and are then cooled to a temperature of between ⁇ 35° C. and ⁇ 40° C. and heated at an average rate of between 1.5 and 1.8° C./h to a temperature of at least 40° C.
- Table 1 below shows in detail the temperature at which the leaves are kept against time. TABLE 1 Time (h) Temperature (° C.) 1 10 4 ⁇ 40 9 ⁇ 25 24 0 26 10 28 20 33 30 48 40
Abstract
The process for reducing the level of harmful substances in tobacco leaves comprises the following steps: steeping the leaves in a water bath at a temperature of between 13° C. and 25° C. for between 4 and 12 hours, cooling the leaves to a temperature not higher than −35° C.; and gradually heating the leaves at an average rate of not more than 2.0° C./h up to a temperature of at least 35° C.
Description
- The present invention relates to a process for reducing the level of harmful substances in tobacco leaves.
- It is an object of the present invention to make it possible to prepare tobacco leaves that can be used for the manufacture of cigars, cigarettes and the like that are not harmful to smokers.
- This object is achieved by means of a process comprising the following steps:
-
- steeping the said leaves in a water bath at a temperature of between 13° C. and 25° C. for between 4 and 12 hours,
- cooling the said leaves to a temperature not higher than −35° C., and
- gradually heating the said leaves at an average rate of not more than 2.0° C./h up to a temperature of at least 35° C.
- After being treated in this way the tobacco leaves can be processed by conventional methods to produce cigarettes, cigars and similar smoking products that do not cause irritation to the throat or lungs of smokers or contaminate the surrounding environment. In fact, it has been found that smokers have a sense of freedom in the oral and pulmonary tracks, and a lowered sense of addiction.
- The leaves are preferably steeped in a water bath at a temperature of between 140° C. and 16° C. for between 6 and 10 hours, and are then cooled to a temperature of between −35° C. and −40° C. and heated at an average rate of between 1.5 and 1.8° C./h to a temperature of at least 40° C.
- Other advantages and features of the present invention will be apparent from the following illustrative embodiment.
- 100 g of green tobacco leaves are steeped overnight in a water bath at room temperature. The leaves are then taken out of the water bath and cooled to a temperature of −40° C. The leaves are then heated to a temperature of 40° C. at an average rate of heating of approximately 1.8° C./min.
- Table 1 below shows in detail the temperature at which the leaves are kept against time.
TABLE 1 Time (h) Temperature (° C.) 1 10 4 −40 9 −25 24 0 26 10 28 20 33 30 48 40 - Following this treatment, a substantial reduction is found in the level of harmful substances that were originally present in the tobacco leaves.
- Naturally, without departing from the principle of the invention, the details of implementation and forms of embodiment may be varied considerably from the details given above purely by way of example, without thereby departing from its scope.
Claims (4)
1. Process for reducing the level of harmful substances in tobacco leaves, comprising the following steps:
steeping the said leaves in a water bath at a temperature of between 13° C. and 25° C. for between 4 and 12 hours,
cooling the said leaves to a temperature not higher than −35° C., and
gradually heating the said leaves at an average rate of not more than 2.0° C./h up to a temperature of at least 35° C.
2. Process according to claim 1 , in which the said leaves are steeped in a water bath at a temperature of between 14° C. and 16° C. for between 6 and 10 hours.
3. Process according to claim 1 , in which the said leaves are cooled to a temperature of between −35° C. and −40° C.
4. Process according to claim 1 , in which the said leaves are heated at an average rate of between 1.5 and 1.8° C./h.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IT2004/000018 WO2005070239A1 (en) | 2004-01-27 | 2004-01-27 | Process for reducing the level of harmful substances in tobacco leaves |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070137664A1 true US20070137664A1 (en) | 2007-06-21 |
Family
ID=34803723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/587,521 Abandoned US20070137664A1 (en) | 2004-01-27 | 2004-01-27 | Process for reducing the level of harmful substances in tobacco leaves |
Country Status (9)
Country | Link |
---|---|
US (1) | US20070137664A1 (en) |
EP (1) | EP1708582B1 (en) |
JP (1) | JP2007519416A (en) |
CN (1) | CN1905813A (en) |
AT (1) | ATE399476T1 (en) |
BR (1) | BRPI0418063A (en) |
CA (1) | CA2554324A1 (en) |
DE (1) | DE602004014818D1 (en) |
WO (1) | WO2005070239A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3316919A (en) * | 1963-04-29 | 1967-05-02 | Brown & Williamson Tobacco | Processing of smoking tobacco |
US3710803A (en) * | 1969-10-15 | 1973-01-16 | Research Corp | Method for turgor conditioning tobacco |
US5040550A (en) * | 1988-05-31 | 1991-08-20 | John Argyropoulos | Tobacco treatment apparatus and process |
US5131415A (en) * | 1991-04-04 | 1992-07-21 | R. J. Reynolds Tobacco Company | Tobacco extraction process |
US5243999A (en) * | 1991-09-03 | 1993-09-14 | R. J. Reynolds Tobacco Company | Tobacco processing |
US5301694A (en) * | 1991-11-12 | 1994-04-12 | Philip Morris Incorporated | Process for isolating plant extract fractions |
-
2004
- 2004-01-27 AT AT04705488T patent/ATE399476T1/en not_active IP Right Cessation
- 2004-01-27 WO PCT/IT2004/000018 patent/WO2005070239A1/en active IP Right Grant
- 2004-01-27 JP JP2006550497A patent/JP2007519416A/en not_active Ceased
- 2004-01-27 EP EP04705488A patent/EP1708582B1/en not_active Expired - Lifetime
- 2004-01-27 DE DE602004014818T patent/DE602004014818D1/en not_active Expired - Fee Related
- 2004-01-27 BR BRPI0418063-1A patent/BRPI0418063A/en not_active IP Right Cessation
- 2004-01-27 CN CNA200480041066XA patent/CN1905813A/en active Pending
- 2004-01-27 CA CA002554324A patent/CA2554324A1/en not_active Abandoned
- 2004-01-27 US US10/587,521 patent/US20070137664A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3316919A (en) * | 1963-04-29 | 1967-05-02 | Brown & Williamson Tobacco | Processing of smoking tobacco |
US3710803A (en) * | 1969-10-15 | 1973-01-16 | Research Corp | Method for turgor conditioning tobacco |
US5040550A (en) * | 1988-05-31 | 1991-08-20 | John Argyropoulos | Tobacco treatment apparatus and process |
US5131415A (en) * | 1991-04-04 | 1992-07-21 | R. J. Reynolds Tobacco Company | Tobacco extraction process |
US5243999A (en) * | 1991-09-03 | 1993-09-14 | R. J. Reynolds Tobacco Company | Tobacco processing |
US5301694A (en) * | 1991-11-12 | 1994-04-12 | Philip Morris Incorporated | Process for isolating plant extract fractions |
Also Published As
Publication number | Publication date |
---|---|
ATE399476T1 (en) | 2008-07-15 |
EP1708582B1 (en) | 2008-07-02 |
JP2007519416A (en) | 2007-07-19 |
CN1905813A (en) | 2007-01-31 |
BRPI0418063A (en) | 2007-04-17 |
EP1708582A1 (en) | 2006-10-11 |
CA2554324A1 (en) | 2005-08-04 |
DE602004014818D1 (en) | 2008-08-14 |
WO2005070239A1 (en) | 2005-08-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CIUFFO GATTO S.R.L., ITALY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEO, FRANCA;REEL/FRAME:018157/0446 Effective date: 20060710 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |