US3557798A - The smoking taste of tobacco stems - Google Patents

The smoking taste of tobacco stems Download PDF

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Publication number
US3557798A
US3557798A US711234A US3557798DA US3557798A US 3557798 A US3557798 A US 3557798A US 711234 A US711234 A US 711234A US 3557798D A US3557798D A US 3557798DA US 3557798 A US3557798 A US 3557798A
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US
United States
Prior art keywords
stems
vacuum
steam
tobacco
taste
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.)
Expired - Lifetime
Application number
US711234A
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English (en)
Inventor
John T Ashworth
Leonard V Kielpinski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brown and Williamson Holdings Inc
Original Assignee
American Tobacco Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by American Tobacco Co filed Critical American Tobacco Co
Application granted granted Critical
Publication of US3557798A publication Critical patent/US3557798A/en
Assigned to AMERICAN TOBACCO COMPANY, THE reassignment AMERICAN TOBACCO COMPANY, THE MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE: DECEMBER 30, 1985 STATE OF INCORP. DELAWARE Assignors: AMERICAN BRANDS, INC., A NJ. CORP. (MERGED INTO)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A24B5/00—Stripping tobacco; Treatment of stems or ribs
    • A24B5/16—Other treatment of stems or ribs, e.g. bending, chopping, incising

Definitions

  • This invention relates to improvement of the quality of tobacco and, more particularly, to improvement of the smoking taste of tobacco stems.
  • This specific steam treatment consists essentially of subjecting a body of the raw tobacco stems, prior to all other extraction and chemical processing treatments, to the action of a vacuum and then breaking the vacuum by the admission of superheated steam to the body of stems.
  • the stem material is charged to a vessel capable of being evacuated.
  • a vacuum is then drawn on the vessel to a pressure below about 1 inch of mercury absolute and advantageously to about 0.2 inch or less.
  • the desired vacuum is broken by admitting superheated steam.
  • the extent of superheating is determined by practical considerations, such as the availability of the superheated steam and time requirements.
  • the effectiveness of the steam treatment in improving the smoking taste of the stems increases with increasing steam temperature and with increasing temperature within the stern mass of the end of the steam treatment'Superheated steam under 5 pounds pressure appears to be wholly satisfactory in practicing the invention but higher pressure steam, such as -20 p.s.i. steam, can be used with advantage.
  • the incoming steam is cooled as it enters the evacuated tobacco mass, the use of superheated steam assures an effectively high final temperature in the mass of stems, a final temperature within the range of about 200220 F. generally being consonant with markedly improved smoking taste of the stems.
  • the superheated steam is let into the evacuated mass of tobacco stems sufficicntly slowly to promote whatever chemical action takes place to produce the taste improvement characteristic of the practice of the invention.
  • a steam introduction period of at least about 5 minutes appears to provide adequate time for effective darkening of the fibers, although we presently prefer to break the vacuum with the superheated steam over a period of 15 to 30 minutes.
  • the steam introduction is terminated.
  • a curing period of at least 24 hours is advantageous following the treatment.
  • a single cycle of this vacuum steam treatment is effective in improving the smoking taste of the stems, two or more cycles appear to progressively promote the desired improvement, and in general we presently prefer to subject the stem material to four or more substantially identical cycles to complete the treatment.
  • tobacco stems in a tobacco mass were subjected to conventional water extraction with grinding and beating to form an aqueous phase and a fibrous phase.
  • the two phases were separated, the aqueous phase was concentrated, the fibrous phase was converted into sheet form and then the aqueous phase was returned as an impregnant for the sheetlike fibrous phase.
  • the resulting reconstituted tobacco sheet was subjected to evacuation to at least 0.5 inch of mercury absolute and the vacuum was then broken by admitting superheated steam at 5 p.s.i. into the tobacco mass over a period of about 20 minutes with a resulting final tobacco temperature of about 200 F. When smoked, the resulting tobacco product had the unacceptable harsh taste characteristic of the starting stem material.
  • a massof the same raw stern material was given the treatment of the present invention by evacuating a mass of the raw stems to at least 0.5 inch of mercury absolute and the vacuum was then broken by admitting superheated steam at 5 psi. into the stem mass over a period of about 20 minutes with a resulting final tobacco temperature of about 200 F.
  • the thus-treated stem material was worked up into reconstituted sheet as described in Test 1, and was then smoked, the harsh taste attributable to the initial stem content was significantly alleviated and the product had an acceptable smoking taste.
  • the method of improving the smoking taste of tobacco stems which consist essentially of subjecting a body of raw tobacco stems, prior to all other extraction and chemical processing treatments, to the action of a vacuum and then breaking the vacuum by the admission of superheated steam to the body of stems until the pressure of the resulting atmosphere in the stems has returned substantially to that of ambient atmospheric pressure, and continuing to hold the steamtreated stems in the latter condition for a period of at least about 24 hours.
  • the TITLE should read Ii-IPROVING THE SMOKING TASTE OF TOBACCO STEMS Signed and sealed this 29th day of June 1971 (SEAL) Attest:

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  • Manufacture Of Tobacco Products (AREA)
US711234A 1968-03-07 1968-03-07 The smoking taste of tobacco stems Expired - Lifetime US3557798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71123468A 1968-03-07 1968-03-07

Publications (1)

Publication Number Publication Date
US3557798A true US3557798A (en) 1971-01-26

Family

ID=24857258

Family Applications (1)

Application Number Title Priority Date Filing Date
US711234A Expired - Lifetime US3557798A (en) 1968-03-07 1968-03-07 The smoking taste of tobacco stems

Country Status (17)

Country Link
US (1) US3557798A (fr)
JP (1) JPS505279B1 (fr)
BE (1) BE729548A (fr)
BR (1) BR6906963D0 (fr)
CH (1) CH485427A (fr)
DE (1) DE1911422A1 (fr)
DK (1) DK125053B (fr)
ES (1) ES364436A1 (fr)
FI (1) FI48522C (fr)
FR (1) FR2003445A1 (fr)
GB (1) GB1232542A (fr)
IE (1) IE32657B1 (fr)
IT (1) IT1036017B (fr)
LU (1) LU58163A1 (fr)
NL (1) NL143412B (fr)
NO (1) NO119865B (fr)
SE (1) SE360552B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211243A (en) * 1977-02-22 1980-07-08 Kikkoman Shoyu Co., Ltd. Process for producing expanded tobacco stems
CN110786541A (zh) * 2019-11-08 2020-02-14 广西中烟工业有限责任公司 一种利用负压调节法去除杂气提升烟叶品质的方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2207755A (en) * 1939-09-30 1940-07-16 Guardite Corp Recycling system for moistening tobacco
US2217935A (en) * 1937-12-21 1940-10-15 Guardite Corp Tobacco treatment process
US2419109A (en) * 1940-11-28 1947-04-15 Alfred J Berger Treatment of tobacco
GB675292A (en) * 1948-06-23 1952-07-09 Guardite Corp Improvements in or relating to puffing of cellular products
US3262458A (en) * 1964-02-06 1966-07-26 Vacudyne Corp Method and apparatus for conditioning tobacco
US3409027A (en) * 1965-12-17 1968-11-05 Philip Morris Inc Method of preventing the shrinkage of puffed tobacco and product obtained thereby

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2217935A (en) * 1937-12-21 1940-10-15 Guardite Corp Tobacco treatment process
US2207755A (en) * 1939-09-30 1940-07-16 Guardite Corp Recycling system for moistening tobacco
US2419109A (en) * 1940-11-28 1947-04-15 Alfred J Berger Treatment of tobacco
GB675292A (en) * 1948-06-23 1952-07-09 Guardite Corp Improvements in or relating to puffing of cellular products
US3262458A (en) * 1964-02-06 1966-07-26 Vacudyne Corp Method and apparatus for conditioning tobacco
US3409027A (en) * 1965-12-17 1968-11-05 Philip Morris Inc Method of preventing the shrinkage of puffed tobacco and product obtained thereby

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211243A (en) * 1977-02-22 1980-07-08 Kikkoman Shoyu Co., Ltd. Process for producing expanded tobacco stems
CN110786541A (zh) * 2019-11-08 2020-02-14 广西中烟工业有限责任公司 一种利用负压调节法去除杂气提升烟叶品质的方法

Also Published As

Publication number Publication date
FI48522B (fr) 1974-07-31
IE32657B1 (en) 1973-10-17
CH485427A (fr) 1970-02-15
ES364436A1 (es) 1971-03-16
BR6906963D0 (pt) 1973-02-01
FI48522C (fi) 1974-11-11
IE32657L (en) 1969-09-07
LU58163A1 (fr) 1969-10-16
JPS505279B1 (fr) 1975-03-01
GB1232542A (fr) 1971-05-19
BE729548A (fr) 1969-09-08
FR2003445A1 (fr) 1969-11-07
DE1911422A1 (de) 1969-11-06
SE360552B (fr) 1973-10-01
NO119865B (fr) 1970-07-13
NL143412B (nl) 1974-10-15
IT1036017B (it) 1979-10-30
NL6903519A (fr) 1969-09-09
DK125053B (da) 1972-12-27

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Legal Events

Date Code Title Description
AS Assignment

Owner name: AMERICAN TOBACCO COMPANY, THE

Free format text: MERGER;ASSIGNOR:AMERICAN BRANDS, INC., A NJ. CORP. (MERGED INTO);REEL/FRAME:004666/0798

Effective date: 19851219