AmaxB
Well-Known Member
Chamber Fermentation Tobacco in piles
A 15 plus day cycle is implied
Is suggested a temperature of 20C (68F) for day 1 and 10C (50F) increase over the next 3 days
reaching 50C (122F).
Humidity is introduced to 90% (is stated: it is important to keep humidity at 90%)
It is also suggested air in the chamber should be evacuated daily to provide new oxygen for the tobacco pile. Tobacco pile temperature checked everyday and Tobacco Pile temperature will be (should be) 10C (50F) higher than that of the chamber interior. (Note I think this applies to large piles).
It is implied a chamber temperature of 40C (104F) should result in an inner pile temperature of
50C (122F) the required temperature.
It is stated when this temperature is reached it is maintained for a number of days and samples should be taken. Dependent on the samples the pile should be reformed (Tobacco in the inner pile will have a higher progression of fermentation than that of the outer pile).
Reforming the pile the top and bottom should be moved to the middle. As they dry due to the airing of the chamber and will ferment less that the middle.
It is stated that (IF) the pile is reformed correctly two cycles will be all that is needed in the process and the tobacco should be ready for use.
I take it a cycle is 15 days.
Source of information:
Fermentation and Aging of Cured and Re-Dried Tobacco Leaves (Albert Zevenhuizen)
I feel this could be a good rule of thumb - Chamber size and tobacco mass my impact
_____________________________________________________________________________________________________________________
British-American Tobacco Report
It is interesting to have seen in a report for research conducted by British-American Tobacco
that Oriental Tobacco is Fermented.
When Fermenting Tobacco Nicotine can be lost (this is desirable of Tobaccos very high in Nicotine)
at a rate of 1.5 to 53%. But how ever PH can be increased resulting in greater impact to the smoker and an increase in Nicotine transfer to the smoker.
In Japan it was reported that beneficial effects can be gotten with Burley if Fermented at 50C (122F) and a RH of 82% over 60 days. But if at 30C (86F) a poorer quality would be the result.
Carbon Monoxide delivery in fermented Air-Cured and Oriental showed a reduction of 1/3[SUP]rd[/SUP]. Also Flue Cured if Fermented with the use of Bakers Yeast Flue Cured showed a reduction of as much as 1/3[SUP]rd[/SUP] also.
A greater reduction was noted of an American Cigarette blended of Virginia and Turkish using Yest Fermentation CO was reduced by 64% but if blended further with other tobaccos this reduction was lost.
Low Delivery Cigarettes – Fermentation could have a role in the development of cigarettes of this type in order to make consumer acceptable products without the addition of Humectants or Casings.
It is cited: Fermentations might be applied for the improvement of product attributes
Irritation levels are reduced
There is an increase of Nicotine transfer
Enhanced Flavor
No need for casings
A 15 plus day cycle is implied
Is suggested a temperature of 20C (68F) for day 1 and 10C (50F) increase over the next 3 days
reaching 50C (122F).
Humidity is introduced to 90% (is stated: it is important to keep humidity at 90%)
It is also suggested air in the chamber should be evacuated daily to provide new oxygen for the tobacco pile. Tobacco pile temperature checked everyday and Tobacco Pile temperature will be (should be) 10C (50F) higher than that of the chamber interior. (Note I think this applies to large piles).
It is implied a chamber temperature of 40C (104F) should result in an inner pile temperature of
50C (122F) the required temperature.
It is stated when this temperature is reached it is maintained for a number of days and samples should be taken. Dependent on the samples the pile should be reformed (Tobacco in the inner pile will have a higher progression of fermentation than that of the outer pile).
Reforming the pile the top and bottom should be moved to the middle. As they dry due to the airing of the chamber and will ferment less that the middle.
It is stated that (IF) the pile is reformed correctly two cycles will be all that is needed in the process and the tobacco should be ready for use.
I take it a cycle is 15 days.
Source of information:
Fermentation and Aging of Cured and Re-Dried Tobacco Leaves (Albert Zevenhuizen)
I feel this could be a good rule of thumb - Chamber size and tobacco mass my impact
_____________________________________________________________________________________________________________________
British-American Tobacco Report
It is interesting to have seen in a report for research conducted by British-American Tobacco
that Oriental Tobacco is Fermented.
When Fermenting Tobacco Nicotine can be lost (this is desirable of Tobaccos very high in Nicotine)
at a rate of 1.5 to 53%. But how ever PH can be increased resulting in greater impact to the smoker and an increase in Nicotine transfer to the smoker.
In Japan it was reported that beneficial effects can be gotten with Burley if Fermented at 50C (122F) and a RH of 82% over 60 days. But if at 30C (86F) a poorer quality would be the result.
Carbon Monoxide delivery in fermented Air-Cured and Oriental showed a reduction of 1/3[SUP]rd[/SUP]. Also Flue Cured if Fermented with the use of Bakers Yeast Flue Cured showed a reduction of as much as 1/3[SUP]rd[/SUP] also.
A greater reduction was noted of an American Cigarette blended of Virginia and Turkish using Yest Fermentation CO was reduced by 64% but if blended further with other tobaccos this reduction was lost.
Low Delivery Cigarettes – Fermentation could have a role in the development of cigarettes of this type in order to make consumer acceptable products without the addition of Humectants or Casings.
It is cited: Fermentations might be applied for the improvement of product attributes
Irritation levels are reduced
There is an increase of Nicotine transfer
Enhanced Flavor
No need for casings