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Publication numberUS1437095 A
Publication typeGrant
Publication dateNov 28, 1922
Filing dateJun 1, 1920
Priority dateJun 1, 1920
Publication numberUS 1437095 A, US 1437095A, US-A-1437095, US1437095 A, US1437095A
InventorsAlwin Delling
Original AssigneeAugust Wasmuth, John Huppertz
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Process of bleaching tobacco
US 1437095 A
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Description  (OCR text may contain errors)

Patented Nov. 28-, 1922.-

UNITED STATES new,

ALWIN DELLING, 0F NORDHAUSEN, GERMANY, ASSIGNOR 0F ONE-HALF T0 AUGUST WASMUTI-I AND ONE-FOURTH TO JOHN HUPPERTZ, BOTH OF HAIIIBUEG. GER- MANY.

No Drawing.

To all whom it may concern:

Be it known that I. ALWIN DELLING, or Nordhausen, Germany. a merchant and a citizen of the German Republic, have invented certain new and useful Improvements in the Processes of Bleaching Tobacco, of which the following is a specification.

The object of the invention is to provide an improved process of bleaching tobacco, for the purpose of imparting to the darker sorts of leaf the'lighter hue demanded by popular taste.

According to the invention the leaf is subjected to two treatments, first with hydrogen peroxide alone, and then with hydrogen peroxide in conjunction with a suitable acid, the latter treatment producing an acid reaction.

Bleaching effected with hydrogen peroxide alone is not permanent. The leaf gradually resumes a darker hue, returning more or less to its original color. This lack of permanency is obviated by the second treatment with an acidulated solution of hydrogen peroxide. The acids best suited to the purpose are organic acids, for example citric acid, but other acids, for example nitric acid may be used.

Sumatra and Java tobaccos are particularly adapted for treatment by the process.

The following is an example of the manner of carrying the process into effect.

1.75 kg. of tobacco are treated for 36 hours with 5 kg. of an aqueous solution containing 12% by volume of hydrogen peroxide.

PROCESS OF BLEACHING TOBACCO.

Application filed June 1, 1920. Serial No. 385,872.

The leaf thus treated is rinsed with water and then treated for 12 hours with 5 kg. of

an aqueous solution containing 12% by volume of hydrogen peroxide and 0.1% by volume of tartaric acid. The treatment takes place at normal air temperature.

WVhat I claim as my invention and desire alone and then treating it with an acidulated aqueous solution of hydrogen peroxide.

2. The process of bleaching tobacco leaf which consists in first treating the leaf with an aqueous solution of hydrogen peroxide alone and then treating it with an aqueous solution of hydrogen peroxide acidulated with an organic acid.

3. The herein described process of bleaching tobacco leaf consisting in first treating the leaf with an aqueous solution of hydrogen peroxide, then rinsing the leaf with water; then treating the leaf with an acidulated aqueous solution of hydrogen peroxide.

In witness whereof I have signed this specification in the presence of two witnesses.

ALWIN DELLING.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2419109 *Nov 28, 1940Apr 15, 1947Berger Alfred JTreatment of tobacco
US2429567 *Dec 31, 1941Oct 21, 1947American Mach & FoundryDenicotinizing tobacco
US3020179 *Dec 29, 1959Feb 6, 1962Gen Cigar CoTobacco treatment and product therefrom
US3112755 *Dec 19, 1960Dec 3, 1963Lorillard Co PTobacco product
US7810507Jul 23, 2007Oct 12, 2010R. J. Reynolds Tobacco Companymicrocapsules containing sugar beet fiber material;
US7946295Jul 23, 2007May 24, 2011R. J. Reynolds Tobacco CompanySmokeless tobacco composition
US8061362Jul 23, 2007Nov 22, 2011R. J. Reynolds Tobacco CompanySmokeless tobacco composition
US8434496Jun 2, 2009May 7, 2013R. J. Reynolds Tobacco CompanyThermal treatment process for tobacco materials
US8695609Sep 9, 2010Apr 15, 2014R. J. Reynolds Tobacco CompanySmokeless tobacco composition
WO2010141278A1May 26, 2010Dec 9, 2010R.J. Reynolds Tobacco CompanyThermal treatment process for tobacco materials
WO2012021683A2Aug 11, 2011Feb 16, 2012R. J. Reynolds Tobacco CompanyThermal treatment process for tobacco materials
WO2013122948A1Feb 12, 2013Aug 22, 2013R. J. Reynolds Tobacco CompanyWhitened tobacco composition
Classifications
U.S. Classification131/309, 131/310
International ClassificationA24B15/42, A24B15/00
Cooperative ClassificationA24B15/42
European ClassificationA24B15/42