Tobacco Product, Preparation and Uses Thereof

a technology for tobacco products and products, applied in the field of smokeless tobacco, tobacco derivatives or tobacco substitute products, can solve the problems of easy sublime and high volatile, and achieve the effects of reducing salt products, improving flavour, and reducing calories

Inactive Publication Date: 2010-05-27
BRITISH AMERICAN TOBACCO (INVESTMENTS) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0021]By using flavourants it can be possible to provide not only a product with improved flavour, but also one which has additional benefits over existing products. For example, flavourants which mimic the taste of salt can be used to provide a reduced salt product, and artificial sweeteners can be used to provide a reduced calorie product.
[0022]In addition to or instead of flavourants other complex agents can be provided with the cyclodextrins of the present invention. For example, use of an anti-microbial agent such as hinokitol can increase shelf-life and / or provide a product which can be suitably stored under less stringent conditions. Complex agents such as anti-refrigerants or preservative agents could be used to improve product stability and / or minimize undesired limitations on storage and transport conditions. The complex agents used with the present invention thus give the blender greater latitude in the use of flavourants, buffers, additives and moisture when preparing the tobacco or tobacco substitute.

Problems solved by technology

One manufacturing and packaging challenge presented by many known flavourants is that they tend to be highly volatile and easily sublime.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

Cyclodextrin Linked to Cellulose Powder with Epichlorohydrin

[0044]Two samples were prepared using aqueous potassium carbonate to attach epichlorohydrin and cyclodextrin to cellulose.

[0045]A mixture of cellulose (50 g), epichlorohydrin (5 g), potassium carbonate (10 g) and β-cyclodextrin (10 g) in water (200 ml) were stirred at 50° C. for 5 hours. The mixture was cooled, filtered, washed exhaustively with water and dried in vacua to give the first sample, PD906 (50.1 g). The second sample was prepared by stirring a mixture of cellulose (50 g), epichlorohydrin (5 g), potassium carbonate (10 g) and γ-cyclodextrin (10 g) in water (200 ml) at 75° C. for 14 hours. The mixture was cooled, filtered, washed exhaustively with water and dried in vacuo to give sample PD907 (50 g).

[0046]Two samples were prepared using potassium carbonate and butanone to attach epichlorohydrin and cyclodextrin to cellulose.

[0047]A mixture of cellulose (50 g), epichlorohydrin (5 g), potassium carbonate (10 g) and ...

example 2

Cyclodextrin Linked to Cellulose Powder with Imidasolidone

[0052]In these thermal reactions, the general procedure followed was: addition of an aqueous (deionised water) or aqueous methanolic solution of CD / imidazolidone / catalytic magnesium chloride / citric acid to cellulose powder (microcrystalline size) followed by evaporation of the slurry (circa 75° C. in vacuo) and heat treatment of residue (circa 160° C. either in air or under a nitrogen atmosphere). The cooled material was exhaustively washed with water and dried at 65-75° C. in vacuo.

[0053]The experimental conditions were generally similar to those disclosed in U.S. Pat. No. 7,109,324. As noted therein, magnesium chloride was added to optimize CD-cellulose bonding and citric acid was added to keep pH at 5.

[0054]A solution of p-CD (5 g), imidazolidone (5 g), magnesium chloride hexahydrate (1 g), citric acid (100 mg) in deionised water (50 ml) was mixed with cellulose to form a paste. This was placed in a glass dish in a 155-180...

example 3

Removal of Benzo(a)Pyrene by Derivatised Cellulose

[0064]A feature of the invention was displayed using derivatised cellulose to remove B(a)P from an aqueous solution. This also had the effect of confirming the variety of cyclodextrin entities described above were successfully bound to cellulose.

[0065]Because of the complex nature of tobacco extract, replete with numerous substances, it can be difficult to quantify molecules such as B(a)P which are present at low concentrations in the matrix. This problem is particularly acute with fluorescence measurements because sometimes the matrix can affect the measurement; this phenomenon is known as fluorescence quenching. For this reason fluorescence determinations often require extensive sample clean-up to minimize the deleterious affects of the matrix.

[0066]To avoid problematic fluorescence quenching and clean-up procedures, the following experiments were conducted without a tobacco matrix. This allowed the cyclodextrin—cellulose compounds...

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PUM

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Abstract

A smokeless oral tobacco product comprises a cyclodextrin or cyclodextrin derivative. Such a product can further comprise a flavourant complexed with the cyclodextrin or derivative thereof. Cyclodextrins or their derivative can be used in smokeless oral tobacco products to complex with molecules which arise or solubilize during use of the product and optionally to also release, e.g., flavour or aroma during use of the product.

Description

FIELD OF THE INVENTION[0001]The invention relates generally to smokeless tobacco, tobacco derivative or tobacco substitute products incorporating cyclodextrins or cyclodextrin derivatives. More specifically, the invention relates to smokeless tobacco, tobacco derivatives, or tobacco substitute products comprising cyclodextrins or cyclodextrin derivatives which are incorporated in or bound to a cellulosic material.BACKGROUND OF THE INVENTION[0002]Cyclodextrins are cyclic oligosaccharides consisting of 1,4-α-glucoside monomers. They exist naturally as α-, β-, and γ-cyclodextrins consisting of 6, 7, and 8 glucose monomers in a ring, respectively. Their respective internal diameters are 0.57, 0.78, and 0.95 nm; each has a torus depth of about 0.78 nm The toriod shape offers unequal opening sizes for the inner cavity. The smaller opening exposes a primary hydroxyl group to the surrounding solvent while the larger opening exposes a secondary hydroxyl group. The presence of these hydroxyl ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A24B15/36
CPCA24B13/00A24B15/30A24B15/283
Inventor CLAYTON, PETER
Owner BRITISH AMERICAN TOBACCO (INVESTMENTS) LTD
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