US3126012A - Smqeong tobacco additives in the form - Google Patents
Smqeong tobacco additives in the form Download PDFInfo
- Publication number
- US3126012A US3126012A US3126012DA US3126012A US 3126012 A US3126012 A US 3126012A US 3126012D A US3126012D A US 3126012DA US 3126012 A US3126012 A US 3126012A
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- US
- United States
- Prior art keywords
- acetal
- menthyl
- menthol
- tobacco
- smoking
- 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
Links
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims description 30
- 241000208125 Nicotiana Species 0.000 title description 28
- 239000000654 additive Substances 0.000 title description 12
- -1 MENTHYL ACETAL Chemical class 0.000 claims description 58
- 230000000391 smoking Effects 0.000 claims description 58
- 239000000796 flavoring agent Substances 0.000 claims description 26
- 235000019634 flavors Nutrition 0.000 claims description 26
- 240000008962 Nicotiana tabacum Species 0.000 claims 2
- 235000019505 tobacco product Nutrition 0.000 description 62
- NOOLISFMXDJSKH-KXUCPTDWSA-N (-)-(1R,3R,4S)-menthol Chemical compound CC(C)[C@@H]1CC[C@@H](C)C[C@H]1O NOOLISFMXDJSKH-KXUCPTDWSA-N 0.000 description 54
- 150000001241 acetals Chemical class 0.000 description 48
- 229960004873 LEVOMENTHOL Drugs 0.000 description 40
- 229940041616 Menthol Drugs 0.000 description 40
- SATCULPHIDQDRE-UHFFFAOYSA-N Piperonal Chemical compound O=CC1=CC=C2OCOC2=C1 SATCULPHIDQDRE-UHFFFAOYSA-N 0.000 description 34
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 20
- 239000000203 mixture Substances 0.000 description 16
- 229940081310 piperonal Drugs 0.000 description 16
- 235000019441 ethanol Nutrition 0.000 description 14
- ZRSNZINYAWTAHE-UHFFFAOYSA-N 4-Anisaldehyde Chemical compound COC1=CC=C(C=O)C=C1 ZRSNZINYAWTAHE-UHFFFAOYSA-N 0.000 description 12
- HUMNYLRZRPPJDN-UHFFFAOYSA-N Benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 12
- WTWBUQJHJGUZCY-UHFFFAOYSA-N Cuminaldehyde Chemical compound CC(C)C1=CC=C(C=O)C=C1 WTWBUQJHJGUZCY-UHFFFAOYSA-N 0.000 description 12
- 150000001299 aldehydes Chemical class 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 238000004821 distillation Methods 0.000 description 10
- 238000000921 elemental analysis Methods 0.000 description 10
- 150000002576 ketones Chemical class 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- VZLCCXLZZATQJP-UHFFFAOYSA-N C1(CC(C(CC1)C(C)C)OC(C1=CC=CC=C1)OC1CC(CCC1C(C)C)C)C Chemical compound C1(CC(C(CC1)C(C)C)OC(C1=CC=CC=C1)OC1CC(CCC1C(C)C)C)C VZLCCXLZZATQJP-UHFFFAOYSA-N 0.000 description 8
- WJUFSDZVCOTFON-UHFFFAOYSA-N Veratraldehyde Chemical compound COC1=CC=C(C=O)C=C1OC WJUFSDZVCOTFON-UHFFFAOYSA-N 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 235000019504 cigarettes Nutrition 0.000 description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000779 smoke Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 6
- 229940095076 benzaldehyde Drugs 0.000 description 6
- 239000012043 crude product Substances 0.000 description 6
- HEVMDQBCAHEHDY-UHFFFAOYSA-N dimethoxymethylbenzene Chemical compound COC(OC)C1=CC=CC=C1 HEVMDQBCAHEHDY-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- MHRLBTDMCRCDGX-UHFFFAOYSA-N C1(CC(C(CC1)C(C)C)OC(C1=CC=C(C=C1)C)OC1CC(CCC1C(C)C)C)C Chemical compound C1(CC(C(CC1)C(C)C)OC(C1=CC=C(C=C1)C)OC1CC(CCC1C(C)C)C)C MHRLBTDMCRCDGX-UHFFFAOYSA-N 0.000 description 4
- HZRLOVYGCANUKG-UHFFFAOYSA-N C1(CC(C(CC1)C(C)C)OC(CCCCCC)OC1CC(CCC1C(C)C)C)C Chemical compound C1(CC(C(CC1)C(C)C)OC(CCCCCC)OC1CC(CCC1C(C)C)C)C HZRLOVYGCANUKG-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 241000282414 Homo sapiens Species 0.000 description 4
- JOXIMZWYDAKGHI-UHFFFAOYSA-N P-Toluenesulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 4
- IKHGUXGNUITLKF-UHFFFAOYSA-N acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 4
- 230000000996 additive Effects 0.000 description 4
- 125000001931 aliphatic group Chemical group 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 4
- KJPRLNWUNMBNBZ-QPJJXVBHSA-N cinnamic aldehyde Natural products O=C\C=C\C1=CC=CC=C1 KJPRLNWUNMBNBZ-QPJJXVBHSA-N 0.000 description 4
- 125000000623 heterocyclic group Chemical group 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 230000001264 neutralization Effects 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 238000001953 recrystallisation Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- FXLOVSHXALFLKQ-UHFFFAOYSA-N 4-Methylbenzaldehyde Chemical compound CC1=CC=C(C=O)C=C1 FXLOVSHXALFLKQ-UHFFFAOYSA-N 0.000 description 2
- YDQLGNDCYHZHEE-UHFFFAOYSA-N 5-(diethoxymethyl)-1,3-benzodioxole Chemical compound CCOC(OCC)C1=CC=C2OCOC2=C1 YDQLGNDCYHZHEE-UHFFFAOYSA-N 0.000 description 2
- KVZFIMLYPWHWHG-UHFFFAOYSA-N C(C)OC(C)OC1CC(CCC1C(C)C)C Chemical compound C(C)OC(C)OC1CC(CCC1C(C)C)C KVZFIMLYPWHWHG-UHFFFAOYSA-N 0.000 description 2
- BMXVGEGVPGRWTL-UHFFFAOYSA-N C1(CC(C(CC1)C(C)C)OC(C=CC1=CC=CC=C1)OC1CC(CCC1C(C)C)C)C Chemical compound C1(CC(C(CC1)C(C)C)OC(C=CC1=CC=CC=C1)OC1CC(CCC1C(C)C)C)C BMXVGEGVPGRWTL-UHFFFAOYSA-N 0.000 description 2
- VQCNVUTZHJCDAE-UHFFFAOYSA-N C1(CC(C(CC1)C(C)C)OC(CC(OC1CC(CCC1C(C)C)C)OC1CC(CCC1C(C)C)C)OC1CC(CCC1C(C)C)C)C Chemical compound C1(CC(C(CC1)C(C)C)OC(CC(OC1CC(CCC1C(C)C)C)OC1CC(CCC1C(C)C)C)OC1CC(CCC1C(C)C)C)C VQCNVUTZHJCDAE-UHFFFAOYSA-N 0.000 description 2
- ZNZYKNKBJPZETN-WELNAUFTSA-N Dialdehyde 11678 Chemical compound N1C2=CC=CC=C2C2=C1[C@H](C[C@H](/C(=C/O)C(=O)OC)[C@@H](C=C)C=O)NCC2 ZNZYKNKBJPZETN-WELNAUFTSA-N 0.000 description 2
- FXHGMKSSBGDXIY-UHFFFAOYSA-N Heptanal Chemical compound CCCCCCC=O FXHGMKSSBGDXIY-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 230000001680 brushing Effects 0.000 description 2
- 229940117916 cinnamic aldehyde Drugs 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000003247 decreasing Effects 0.000 description 2
- 125000005594 diketone group Chemical group 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 2
- 238000004508 fractional distillation Methods 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- WSMYVTOQOOLQHP-UHFFFAOYSA-N malondialdehyde Chemical compound O=CCC=O WSMYVTOQOOLQHP-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 239000012044 organic layer Substances 0.000 description 2
- 239000001184 potassium carbonate Substances 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
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
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
- A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
- A24B15/281—Treatment of tobacco products or tobacco substitutes by chemical substances the action of the chemical substances being delayed
Definitions
- This invention relates to an improved smoking tobacco product and the method of making the same, and more particularly to an improved smoking tobacco product having incorporated therein aromaand flavor-producing additives which improve the smoking characteristics thereof.
- Smoking tobacco products are of increasing significance in the tobacco products industry.
- Unfortunately there are a number of difliculties and disadvantages in connection therewith. This is due to the volatility of natural and synthetic menthol.
- the manufacturing rooms and equipment of tobacco products factories are frequently contaminated by menthol with the result that unmentholated tobacco products are affected thereby.
- menthol-containing tobacco products have a relatively short shelf life.
- a further difiiculty arises from the smokers response to menthol when smoking a mentholated tobacco product. Menthol is released at an increasing rate during the smoking period but has the opposite effect on the smoker, namely, one of a decreasing menthol response.
- the release of menthol in a tobacco product does not impart a pleasing and improved organoleptic effect to the smoker throughout the smoking period.
- Our invention contemplates incorporating in a smoking tobacco or in a smoking tobacco product a menthyl acetal derived from an aldehyde or ketone and from one or more alcohols and in which one of the alcoholderived groups is derived from menthol.
- the menthol portion of the acetal may be derived from natural or synthetic or a mixture of synthetic and natural menthol.
- R and R is an organic radical and the other is a radical selected from the group consisting of hydrogen and an organic radical and at least one of R" and R' is menthyl and the other of R" and R' is a radical selected from the group consisting of menthyl and an organic radical.
- the organic radicals may be monofunctional or polyfunctional, saturated or unsaturated, aliphatic or aromatic, or heterocyclic.
- the aldehyde or ketone (carbonyl) derived portion of the menthyl-containing derivatives may be monofunctional or poly functional, saturated or unsatuice rated, aliphatic or aromatic, or heterocyclic.
- the aldehyde or ketone should be one which is not harmful to human beings when ingested with smoke from the smoking tobacco product and which is organoleptically pleasing and beneficial or at least is organoleptically neutral.
- the carbonyl-derived portion may be either a monoaldehyde or a ketone or a dialdehyde or a'diketone.
- aldehydes from which the acetals may be derived are as follows: piperonal, anisaldehyde, cumaldehyde, cinnamaldehyde, benzaldehyde, veratraldehyde, p-tolualdehyde, heptaldehyde, malonaldehyde, acetaldehyde and S-hydroxyvaleraldehyde.
- At least one of the alcohol derived groups of the acetal is derived from menthol and the acetal may be simple menthyl acetals or mixed acetals.
- acetals which may be incorporated in tobacco products to impart improved organoleptic characteristics thereto in accordance with our invention are as follows: benzaldehyde dimenthyl acetal, p-tolualdehyde dimenthyl acetal, veratraldehyde dimenthyl acetal, veratraldehyde menthyl ethyl acetal, piperonal dimenthyl acetal, cumaldehyde dimenthyl acetal, cinnamaldehyde dimenthyl acetal, anisaldehyde dimenthyl acetal, heptaldehyde dimenthyl acetal, l-menthoxy-l-ethoxymethane, 1,1,3,3-tetrarnenthoxypropane and Z-menthoxytetrahydropyran.
- menthyl acetals Upon smoking of tobacco products having menthyl acetals incorporated therein in accordance with our invention, a pleasing and improved release of menthol occurs.
- the menthyl acetals hydrolyze in the presence I of water and acid contained in the smoke stream. Upon hydrolysis, the menthol is released into the smoke stream at a rate which results in a pleasing and improved organoleptic effect throughout the smoking period.
- the menthyl acetals may be prepared by the following general procedure: The diethyl acetal of the appropriate aldehyde is mixed with menthol, either synthetic or natural, and the resulting mixture is agitated and heated at from 60 to C. for several hours. After completion of the reaction, the co-product ethyl alcohol is removed in vacuo. The crude menthyl acetal is purified by distillation under reduced pressure, and recrystallization is effected from petroleum ether when applicable.
- menthyl acetals which may be used as tobacco product additives in accordance with our invention are as follows:
- Example 1 l-ethoxy-l-menthoxyethane is prepared in the following manner: A mixture of 43.3 grns. ethyl vinyl ether and 31.2 gms. of l-menthol is cooled to 13 C. and is agitated while 0.08 gm. of p-toluenesulfonic acid is added. After an additional hour at 15 to 20 C. 70 ml. of a solution of 10% by weight sodium hydroxide in water is added and the mixture is stirred for 10 minutes. The organic layer is separated, washed with 50 ml. of a solution of 10% by weight sodium hydroxide in water and dried over anhydrous sodium sulfate.
- Example 2 1,1,3,S-tetramenthoxypropane is prepared in the following manner: A mixture of 4.6 grns. 1,l,3,3-tetramethoxypropane, 25 grns. l-menthol and 3 drops concentrated hydrochloric acid is heated under reflux at 50 mm. Hg A pressure for 1.5 hours. The crude product is purified by distillation under reduced pressure to remove low boiling materials following by recrystallization of the stripped residue from dioxane to yield crystals, M.P. 130- 131 C. Elemental analysis: Calculated for C H O C, 78.12; H, 12.19. Found: C, 77.93; H, 11.90.
- Example 3 Benzaldehyde dimethyl acetal is prepared in the following manner: A mixture of 48.0 gms. of diethyl acetal of benzaldehyde and 106.0 gms. of l-menthol is heated on a water bath at from 60 to 80 C. for 3 hours. After completion of the reaction, the co-product, ethyl alcohol is removed in vacuo. The crude benzaldehyde dimethyl acetal is purified by distillation under reduced pressure to remove the excess of l-menthol. The residue is recrystallized from ethanol to yield 25.0 grns., 23% of theoretical of benzaldehyde dimethyl acetal, M.P. 50-51 C. Elemental analysis: Calculated for C I-1 C, 80.94; H, 11.07. Found: C, 80.66; H, 11.11.
- Piperonal dimenthyl acetal is prepared in the following manner: A mixture of 82.3 gms. of piperonal diethyl acetal and 125.0 gms. of l-menthol is agitated and heated at from 60 to 80 C. for two hours. After completion of the reaction, the co-product ethyl alcohol is removed in vacuo. The crude product, piperonal dimenthyl acetal, is purified by distillation under reduced pressure and the distillate recrystallized from petroleum ether to yield 51.0 grns., 31.9% of theoretical of piperonal dimenthyl acetal, boiling point 7273 C. Elemental analysis is: Calculated for C H O C, 75.63; H, 9.97. Found: C, 75.67; H, 9.99.
- Veratraldehyde menthyl ethyl acetal is prepared in the following manner: A mixture of 120.0 gms. of the diethyl acetal of veratraldehyde and 156.0 gms. of l-menthol is heated at from 60 to 80 C. for two hours. After completion of the reaction the co-product ethyl alcohol, is removed by distillation in vacuo. The crude product, veratraldehyde menthyl ethyl acetal, is recrystallized 70.5 grns., 40% of theoretical of veratraldehyde menthyl ethyl acetal, M.P. 8788 C. Elemental analysis: Calculated for C I-1 0 C, 71.96; H, 9.77. Found: C, 71.45; H, 9.72.
- Examples 1 to 5 set forth above are for illustrative purposes only and do not limit our invention to the compounds listed.
- Any menthyl acetal may be used that improves flavor and aroma in a smoking tobacco product.
- the menthyl acetals used are derived from aldehydes or ketones which are not harmful to human beings when ingested with the smoke from a smoking tobacco product and which are organoleptically pleasing and beneficial or are at least organoleptically neutral.
- the proportions of menthol and acetal used may be adjusted in accordance with the molecular weights thereof.
- the proportion of menthyl acetal to be incorporated in a smoking tobacco product may be widely varied in accordance with taste, but We have found that desirable results which improve flavor and aroma are obtained when the menthol content of the acetal is between 0.01 and 1.0% by Weight to the smoking tobacco.
- the menthyl acetal may be dissolved in a suitable solvent and either sprayed on the cured, cased and blended tobacco or the tobacco may be dipped therein.
- the menthyl acetal may be applied to the leaf or paper wrapper or to tobacco filter material by a suitable applicator, such as could be applied by brushing, spray- 4 ing, dipping or any other method in general use in the industry. W
- menthyl acetals are as follows:
- Example 6 Approximately 1.0 gm. of veratraldehyde menthyl ethyl acetal is dissolved on 50 ml. of absolute ethanol and the solution is sprayed on approximately 100.0 gms. of cured, cased and blended commercial tobacco. The tobacco so treated is manufactured into cigarettes.
- Example 7 Approximately 1 gm. of piperonal dimenthyl acetal is dissolved in 50 ml. of absolute ethanol and the solution is sprayed on approximately 100.0 gms. of cured, cased and blended commercial tobacco. The tobacco so treated is manufactured into cigarettes.
- Example 8 Approximately 1.0 gm. of benzaldehyde dimenthyl acetal is dissolved in 50 ml. of absolute ethanol and the solution is sprayed on approximately gms. of cured, cased and blended commercial tobacco. The tobacco so treated is manufactured into cigarettes.
- a smoking tobacco product with improved flavor and aroma characteristics having added thereto a menthyl acetal.
- a smoking tobacco product With improved flavor and aroma characteristics as set forth in claim 1 wherein the menthol content of the acetal constitutes between 0.01 and 1.0% by weight of the tobacco.
- a smoking tobacco product with improved flavor and aroma characteristics having added thereto a menthyl acetal with the following formula in which at least one of R and R is an organic radical and the other is a radical selected from the group consisting of hydrogen and an organic radical, and at least one of R and R' is menthyl and the other of R" and R' is a radical selected from the group consisting of menthyl and an organic radical.
- a smoking tobacco product with improved flavor and aroma characteristics having added thereto a material selected from the group consisting of benzaldehyde dimenthyl acetal, p-tolualdehyde dimenthyl acetal, veratraldehyde dimenthyl acetal, veratraldehyde menthyl ethyl acetal, piperonal dimenthyl acetal, cumaldehyde dimenthyl acetal, anisaldehyde dimenthyl acetal heptaldehyde dimenthyl acetal, l-menthoxy-l-ethoxymethane, 1,1,3,3-tetramenthoxypropane and Z-menthoxytetrahydropyran.
- a smoking tobacco product with improved flavor and aroma characteristics having added thereto benzaldehyde dimenthyl acetal.
- a smoking tobacco product with improved flavor and aroma characteristics having added thereto veratraldehyde menthyl ethyl acetal.
- a smoking tobacco product with improved flavor and aroma characteristics having added thereto piperonal dimcnthyl acetal.
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture Of Tobacco Products (AREA)
- Fats And Perfumes (AREA)
Description
United States Patent 3,126,012 SMOKING TOBACCO ADDITIVES IN THE FORM OF MENTHYL ACETALS Charles H. Jarboe and John G. Esterle, Louisville, Ky.,
assignors to Brown & Williamson Tobacco Corporation, Louisville, Ky., a corporation of Delaware No Drawing. Filed Oct. 29, 1962, Ser. No. 233,954
7 Claims. (Cl. 131-47) This invention relates to an improved smoking tobacco product and the method of making the same, and more particularly to an improved smoking tobacco product having incorporated therein aromaand flavor-producing additives which improve the smoking characteristics thereof.
Smoking tobacco products, particularly cigarettes having menthol therein, are of increasing significance in the tobacco products industry. Unfortunately, however, there are a number of difliculties and disadvantages in connection therewith. This is due to the volatility of natural and synthetic menthol. The manufacturing rooms and equipment of tobacco products factories are frequently contaminated by menthol with the result that unmentholated tobacco products are affected thereby. In addition, menthol-containing tobacco products have a relatively short shelf life. A further difiiculty arises from the smokers response to menthol when smoking a mentholated tobacco product. Menthol is released at an increasing rate during the smoking period but has the opposite effect on the smoker, namely, one of a decreasing menthol response. Thus, the release of menthol in a tobacco product does not impart a pleasing and improved organoleptic effect to the smoker throughout the smoking period.
It is an object of this invention to overcome the difficulties and disadvantages heretofore encountered in connection with mentholated smoking tobacco products and to provide an improved smoking tobacco product and method of making the same having a menthol-derived additive incorporated therein; in which the danger of contamination of the manufacturing rooms and equipment is eliminated or minimized; which has a protracted shelf life; and in which a pleasing and improved organoleptic effect is imparted to the smoker throughout the smoking of the product.
Our invention contemplates incorporating in a smoking tobacco or in a smoking tobacco product a menthyl acetal derived from an aldehyde or ketone and from one or more alcohols and in which one of the alcoholderived groups is derived from menthol. The menthol portion of the acetal may be derived from natural or synthetic or a mixture of synthetic and natural menthol.
Menthyl acetals that have been found to improve flavor and aroma characteristics of tobacco products when incorporated therein have the following general formula:
in which at least one of R and R is an organic radical and the other is a radical selected from the group consisting of hydrogen and an organic radical and at least one of R" and R' is menthyl and the other of R" and R' is a radical selected from the group consisting of menthyl and an organic radical.
The organic radicals may be monofunctional or polyfunctional, saturated or unsaturated, aliphatic or aromatic, or heterocyclic.
Similarly, the aldehyde or ketone (carbonyl) derived portion of the menthyl-containing derivatives may be monofunctional or poly functional, saturated or unsatuice rated, aliphatic or aromatic, or heterocyclic. However, the aldehyde or ketone should be one which is not harmful to human beings when ingested with smoke from the smoking tobacco product and which is organoleptically pleasing and beneficial or at least is organoleptically neutral. In addition, the carbonyl-derived portion may be either a monoaldehyde or a ketone or a dialdehyde or a'diketone.
Specific examples of aldehydes from which the acetals may be derived are as follows: piperonal, anisaldehyde, cumaldehyde, cinnamaldehyde, benzaldehyde, veratraldehyde, p-tolualdehyde, heptaldehyde, malonaldehyde, acetaldehyde and S-hydroxyvaleraldehyde.
As previously indicated, at least one of the alcohol derived groups of the acetal is derived from menthol and the acetal may be simple menthyl acetals or mixed acetals.
Specific examples of acetals which may be incorporated in tobacco products to impart improved organoleptic characteristics thereto in accordance with our invention are as follows: benzaldehyde dimenthyl acetal, p-tolualdehyde dimenthyl acetal, veratraldehyde dimenthyl acetal, veratraldehyde menthyl ethyl acetal, piperonal dimenthyl acetal, cumaldehyde dimenthyl acetal, cinnamaldehyde dimenthyl acetal, anisaldehyde dimenthyl acetal, heptaldehyde dimenthyl acetal, l-menthoxy-l-ethoxymethane, 1,1,3,3-tetrarnenthoxypropane and Z-menthoxytetrahydropyran.
Upon smoking of tobacco products having menthyl acetals incorporated therein in accordance with our invention, a pleasing and improved release of menthol occurs. The menthyl acetals hydrolyze in the presence I of water and acid contained in the smoke stream. Upon hydrolysis, the menthol is released into the smoke stream at a rate which results in a pleasing and improved organoleptic effect throughout the smoking period.
The menthyl acetals may be prepared by the following general procedure: The diethyl acetal of the appropriate aldehyde is mixed with menthol, either synthetic or natural, and the resulting mixture is agitated and heated at from 60 to C. for several hours. After completion of the reaction, the co-product ethyl alcohol is removed in vacuo. The crude menthyl acetal is purified by distillation under reduced pressure, and recrystallization is effected from petroleum ether when applicable.
Specific examples of the preparation of menthyl acetals which may be used as tobacco product additives in accordance with our invention are as follows:
Example 1 l-ethoxy-l-menthoxyethane is prepared in the following manner: A mixture of 43.3 grns. ethyl vinyl ether and 31.2 gms. of l-menthol is cooled to 13 C. and is agitated while 0.08 gm. of p-toluenesulfonic acid is added. After an additional hour at 15 to 20 C. 70 ml. of a solution of 10% by weight sodium hydroxide in water is added and the mixture is stirred for 10 minutes. The organic layer is separated, washed with 50 ml. of a solution of 10% by weight sodium hydroxide in water and dried over anhydrous sodium sulfate. The mixed acetal is isolated by fractional distillation under reduced pressure in the presence of anhydrous potassium carbonate. There was obtained 9.6 grns., 47.6% of theoretical, of 1-ethoxy-1-menthoxyethane, B.P. -103 C./4 mm. Hg A, D 1.4455, d 0.887 g./ml. Elemental analysis: Calculated for C H O C, 73.63; H, 12.36. Found: C, 73.42; H, 11.95.
Example 2 1,1,3,S-tetramenthoxypropane is prepared in the following manner: A mixture of 4.6 grns. 1,l,3,3-tetramethoxypropane, 25 grns. l-menthol and 3 drops concentrated hydrochloric acid is heated under reflux at 50 mm. Hg A pressure for 1.5 hours. The crude product is purified by distillation under reduced pressure to remove low boiling materials following by recrystallization of the stripped residue from dioxane to yield crystals, M.P. 130- 131 C. Elemental analysis: Calculated for C H O C, 78.12; H, 12.19. Found: C, 77.93; H, 11.90.
Example 3 Benzaldehyde dimethyl acetal is prepared in the following manner: A mixture of 48.0 gms. of diethyl acetal of benzaldehyde and 106.0 gms. of l-menthol is heated on a water bath at from 60 to 80 C. for 3 hours. After completion of the reaction, the co-product, ethyl alcohol is removed in vacuo. The crude benzaldehyde dimethyl acetal is purified by distillation under reduced pressure to remove the excess of l-menthol. The residue is recrystallized from ethanol to yield 25.0 grns., 23% of theoretical of benzaldehyde dimethyl acetal, M.P. 50-51 C. Elemental analysis: Calculated for C I-1 C, 80.94; H, 11.07. Found: C, 80.66; H, 11.11.
Example 4 Piperonal dimenthyl acetal is prepared in the following manner: A mixture of 82.3 gms. of piperonal diethyl acetal and 125.0 gms. of l-menthol is agitated and heated at from 60 to 80 C. for two hours. After completion of the reaction, the co-product ethyl alcohol is removed in vacuo. The crude product, piperonal dimenthyl acetal, is purified by distillation under reduced pressure and the distillate recrystallized from petroleum ether to yield 51.0 grns., 31.9% of theoretical of piperonal dimenthyl acetal, boiling point 7273 C. Elemental analysis is: Calculated for C H O C, 75.63; H, 9.97. Found: C, 75.67; H, 9.99.
Example 5 Veratraldehyde menthyl ethyl acetal is prepared in the following manner: A mixture of 120.0 gms. of the diethyl acetal of veratraldehyde and 156.0 gms. of l-menthol is heated at from 60 to 80 C. for two hours. After completion of the reaction the co-product ethyl alcohol, is removed by distillation in vacuo. The crude product, veratraldehyde menthyl ethyl acetal, is recrystallized 70.5 grns., 40% of theoretical of veratraldehyde menthyl ethyl acetal, M.P. 8788 C. Elemental analysis: Calculated for C I-1 0 C, 71.96; H, 9.77. Found: C, 71.45; H, 9.72.
It should be understood that Examples 1 to 5 set forth above are for illustrative purposes only and do not limit our invention to the compounds listed. Any menthyl acetal may be used that improves flavor and aroma in a smoking tobacco product. The menthyl acetals used are derived from aldehydes or ketones which are not harmful to human beings when ingested with the smoke from a smoking tobacco product and which are organoleptically pleasing and beneficial or are at least organoleptically neutral. The proportions of menthol and acetal used may be adjusted in accordance with the molecular weights thereof. The proportion of menthyl acetal to be incorporated in a smoking tobacco product may be widely varied in accordance with taste, but We have found that desirable results which improve flavor and aroma are obtained when the menthol content of the acetal is between 0.01 and 1.0% by Weight to the smoking tobacco.
We have found in practicing our invention that any convenient method may be used to incorporate the menthyl acetals in smoking tobacco products. Thus, the menthyl acetal may be dissolved in a suitable solvent and either sprayed on the cured, cased and blended tobacco or the tobacco may be dipped therein. In addition, the menthyl acetal may be applied to the leaf or paper wrapper or to tobacco filter material by a suitable applicator, such as could be applied by brushing, spray- 4 ing, dipping or any other method in general use in the industry. W
Specific examples of incorporating the menthyl acetals into the tobacco product are as follows:
Example 6 Approximately 1.0 gm. of veratraldehyde menthyl ethyl acetal is dissolved on 50 ml. of absolute ethanol and the solution is sprayed on approximately 100.0 gms. of cured, cased and blended commercial tobacco. The tobacco so treated is manufactured into cigarettes.
Example 7 Approximately 1 gm. of piperonal dimenthyl acetal is dissolved in 50 ml. of absolute ethanol and the solution is sprayed on approximately 100.0 gms. of cured, cased and blended commercial tobacco. The tobacco so treated is manufactured into cigarettes.
Example 8 Approximately 1.0 gm. of benzaldehyde dimenthyl acetal is dissolved in 50 ml. of absolute ethanol and the solution is sprayed on approximately gms. of cured, cased and blended commercial tobacco. The tobacco so treated is manufactured into cigarettes.
We have found that of the tobacco products incorporating the menthyl acetals which have been tested, the most desirable results were obtained when the dimenthyl acetals of benzaldehyde and piperonal and veratraldehyde menthyl ethyl acetal were used as the additive. It should be understood that taste varies Widely and that other menthyl acetals may give preferred desirable results. The tobacco products described herein when tested organoleptically, were found to have increased flavor and aroma characteristics and a pleasing, cooling, improved taste of menthol was experienced by the smoker.
Modifications may be made in the illustrated examples of our invention without departing from the scope thereof set forth in the accompanying claims.
We claim:
1. A smoking tobacco product with improved flavor and aroma characteristics having added thereto a menthyl acetal.
2. A smoking tobacco product With improved flavor and aroma characteristics as set forth in claim 1 wherein the menthol content of the acetal constitutes between 0.01 and 1.0% by weight of the tobacco.
3. A smoking tobacco product with improved flavor and aroma characteristics having added thereto a menthyl acetal with the following formula in which at least one of R and R is an organic radical and the other is a radical selected from the group consisting of hydrogen and an organic radical, and at least one of R and R' is menthyl and the other of R" and R' is a radical selected from the group consisting of menthyl and an organic radical.
4. A smoking tobacco product with improved flavor and aroma characteristics having added thereto a material selected from the group consisting of benzaldehyde dimenthyl acetal, p-tolualdehyde dimenthyl acetal, veratraldehyde dimenthyl acetal, veratraldehyde menthyl ethyl acetal, piperonal dimenthyl acetal, cumaldehyde dimenthyl acetal, anisaldehyde dimenthyl acetal heptaldehyde dimenthyl acetal, l-menthoxy-l-ethoxymethane, 1,1,3,3-tetramenthoxypropane and Z-menthoxytetrahydropyran.
5. A smoking tobacco product with improved flavor and aroma characteristics having added thereto benzaldehyde dimenthyl acetal.
6. A smoking tobacco product with improved flavor and aroma characteristics having added thereto veratraldehyde menthyl ethyl acetal.
7. A smoking tobacco product with improved flavor and aroma characteristics having added thereto piperonal dimcnthyl acetal.
References Cited in the file of this patent UNITED STATES PATENTS Smith Feb. 27, Wickert et a1 Jan. 30, Bavlcy et a1. July 31, Albert Oct. 9,
Claims (1)
1. A SMOKING TOBACCO PORDUCT WITH IMPROVED FLAVOR AND AROMA CHARACTERISTICS HAVING ADDED THERETO A MENTHYL ACETAL.
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US3126012A true US3126012A (en) | 1964-03-24 |
Family
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US3126012D Expired - Lifetime US3126012A (en) | Smqeong tobacco additives in the form |
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US (1) | US3126012A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3217716A (en) * | 1963-11-14 | 1965-11-16 | Reynolds Tobacco Co R | Tobacco composition |
US4072155A (en) * | 1976-07-15 | 1978-02-07 | Lorillard, a division of Loews Theatres-Inc. | Stiffening of tobacco with dialdehyde |
US4119106A (en) * | 1975-10-22 | 1978-10-10 | Philip Morris, Incorporated | Flavorant-release resin compositions |
US4832059A (en) * | 1987-12-08 | 1989-05-23 | Lorillard, Inc. | Citrus-flavored tobacco articles |
US20070084476A1 (en) * | 2005-10-18 | 2007-04-19 | Philip Morris Usa Inc. | Reconstituted tobacco with bonded flavorant, smoking article and methods |
US20110083679A1 (en) * | 2009-10-09 | 2011-04-14 | Philip Morris Usa Inc. | Immobilized flavorants for flavor delivery |
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US2368186A (en) * | 1942-01-16 | 1945-01-30 | Carbide & Carbon Chem Corp | Production of pyran derivatives |
USRE23345E (en) * | 1951-02-27 | Cyano-substituted tetrahydropyran | ||
US3047431A (en) * | 1961-05-08 | 1962-07-31 | Philip Morris Inc | Smoking composition |
US3057757A (en) * | 1960-02-12 | 1962-10-09 | Mincrals & Chemicals Philip Co | Smoking compositions and smoking unit containing same |
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0
- US US3126012D patent/US3126012A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE23345E (en) * | 1951-02-27 | Cyano-substituted tetrahydropyran | ||
US2368186A (en) * | 1942-01-16 | 1945-01-30 | Carbide & Carbon Chem Corp | Production of pyran derivatives |
US3057757A (en) * | 1960-02-12 | 1962-10-09 | Mincrals & Chemicals Philip Co | Smoking compositions and smoking unit containing same |
US3047431A (en) * | 1961-05-08 | 1962-07-31 | Philip Morris Inc | Smoking composition |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3217716A (en) * | 1963-11-14 | 1965-11-16 | Reynolds Tobacco Co R | Tobacco composition |
US4119106A (en) * | 1975-10-22 | 1978-10-10 | Philip Morris, Incorporated | Flavorant-release resin compositions |
US4072155A (en) * | 1976-07-15 | 1978-02-07 | Lorillard, a division of Loews Theatres-Inc. | Stiffening of tobacco with dialdehyde |
US4832059A (en) * | 1987-12-08 | 1989-05-23 | Lorillard, Inc. | Citrus-flavored tobacco articles |
US20070084476A1 (en) * | 2005-10-18 | 2007-04-19 | Philip Morris Usa Inc. | Reconstituted tobacco with bonded flavorant, smoking article and methods |
US7856988B2 (en) | 2005-10-18 | 2010-12-28 | Philip Morris Usa Inc. | Method of making reconstituted tobacco with bonded flavorant |
US8297288B2 (en) | 2005-10-18 | 2012-10-30 | Philip Morris Usa Inc. | Reconstituted tobacco with bonded flavorant, smoking article and methods |
US20110083679A1 (en) * | 2009-10-09 | 2011-04-14 | Philip Morris Usa Inc. | Immobilized flavorants for flavor delivery |
US9185925B2 (en) | 2009-10-09 | 2015-11-17 | Philip Morris Usa Inc. | Immobilized flavorants for flavor delivery |
US10716324B2 (en) | 2009-10-09 | 2020-07-21 | Philip Morris Usa Inc. | Immobilized flavorants for flavor delivery |
US11957153B2 (en) | 2009-10-09 | 2024-04-16 | Philip Morris Usa Inc. | Immobilized flavorants for flavor delivery |
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