Preparation method of cigar extract suitable for heating cigarettes

Abstract

The invention provides a preparation method of cigar tobacco extract suitable for heating cigarettes, which comprises the following steps: a) mixing cigar tobacco leaves with glycerol, and soaking to obtain a soaking solution; b) sequentially performing extraction, filtration and reduced pressure distillation on the soak solution obtained in the step a) to obtain distillate; and c) mixing the distillate obtained in the step b) with ethanol, and carrying out nanofiltration membrane concentration to obtain the cigar extract suitable for heating cigarettes. Compared with the prior art, the preparation method provided by the invention has the advantages that specific process steps are adopted for specific raw materials, overall better interaction is realized, the prepared cigar extract suitable for heating the cigarettes retains characteristic aroma components of cigars, and when the cigar extract is applied to heating the cigarettes, a characteristic cigar flavor can be formed.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco processing, and more particularly to a method for preparing a cigar extract suitable for heating cigarettes. Background Art

[0003] The product property of heated cigarettes, which heat rather than burn, results in a relatively simple cracking reaction of tobacco when heated, and the release of aroma components is limited. That is, the heating method determines that compared with traditional cigarettes, they have insufficient aroma, lower smoke concentration, weak consumer satisfaction, and uneven aroma when puffing. Therefore, how to compensate for the aroma of heated cigarettes, increase smoke concentration, enhance consumer satisfaction, and achieve uniform aroma release is one of the key technical issues that urgently need to be solved in this field. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a method for preparing a cigar extract suitable for heated cigarettes. The prepared cigar extract retains the characteristic aroma components of cigars and can form a characteristic cigar flavor when used in heated cigarettes.

[0005] The present invention provides a method for preparing a cigar extract suitable for heating cigarettes, comprising the following steps:

[0006] a) mixing cigar tobacco leaves with glycerin and soaking them to obtain a soaking liquid;

[0007] b) extracting, filtering and distilling the soaking liquid obtained in step a) in sequence to obtain a distillate;

[0008] c) mixing the distillate obtained in step b) with ethanol and concentrating it through a nanofiltration membrane to obtain a cigar extract suitable for heating cigarettes.

[0009] Preferably, before the cigar tobacco leaves are mixed with glycerin in step a), the process further comprises:

[0010] The cigar tobacco leaves are cut into shreds.

[0011] Preferably, the mass ratio of the cigar tobacco leaves to the glycerin in step a) is 1:(10-20).

[0012] Preferably, the soaking time in step a) is 8 h to 30 h.

[0013] Preferably, the extraction temperature in step b) is 80° C. to 120° C., and the extraction time is 3 h to 5 h.

[0014] Preferably, the filtering process in step b) is specifically as follows:

[0015] The extracted solution was filtered while hot through a 50-80 mesh filter to obtain a filtrate.

[0016] Preferably, the pressure of the reduced pressure distillation in step b) is 0.5 KPa to 10 KPa, and the temperature is 141° C. to 216° C.

[0017] Preferably, the amount of ethanol used in step c) is 0.5 to 1 times the mass of the distillate.

[0018] Preferably, the mixing method in step c) is stirring; the stirring speed is 30 rpm to 100 rpm, and the stirring time is 10 min to 20 min.

[0019] Preferably, the membrane inlet pressure of the nanofiltration membrane concentration in step c) is 0.6MPa-0.8MPa, the feed liquid temperature is 25°C-33°C, the concentrated liquid flux is 124.8L / h-175.4L / h, and the concentration multiple is 5-10 times.

[0020] The present invention provides a method for preparing a cigar extract suitable for heating cigarettes, comprising the following steps: a) mixing cigar tobacco leaves with glycerol, soaking them, and obtaining a soaking liquid; b) extracting, filtering, and distilling the soaking liquid obtained in step a) in sequence, and obtaining a distillate; c) mixing the distillate obtained in step b) with ethanol, and concentrating it with a nanofiltration membrane, and obtaining a cigar extract suitable for heating cigarettes. Compared with the prior art, the preparation method provided by the present invention targets specific raw materials, adopts specific process steps, and achieves overall better interaction. The prepared cigar extract suitable for heating cigarettes retains the characteristic aroma components of cigars, and can form a characteristic cigar flavor when used in heating cigarettes.

[0021] At the same time, the preparation method provided by the present invention is simple to operate, has mild conditions and is easy to control, can be applied on a large scale in the preparation of new tobacco flavors and fragrances, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the GC / MC spectrum of the cigar extract suitable for heated cigarettes obtained in Example 1 of the present invention. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present invention provides a method for preparing a cigar extract suitable for heating cigarettes, comprising the following steps:

[0025] a) mixing cigar tobacco leaves with glycerin and soaking them to obtain a soaking liquid;

[0026] b) extracting, filtering and distilling the soaking liquid obtained in step a) in sequence to obtain a distillate;

[0027] c) mixing the distillate obtained in step b) with ethanol and concentrating it through a nanofiltration membrane to obtain a cigar extract suitable for heating cigarettes.

[0028] Cigars have a strong and mellow aroma, and the aroma mainly comes from the characteristic aroma substances contained in cigar leaves. On this basis, the present invention provides a method for preparing a cigar extract suitable for heated cigarettes, and the cigar extract is prepared by using glycerin extraction, vacuum distillation and other processes, thereby retaining the characteristic aroma components of cigars and enhancing its application potential in heated cigarettes.

[0029] The present invention firstly mixes cigar tobacco leaves with glycerin and soaks them to obtain soaking liquid. The present invention has no special restriction on the sources of the cigar tobacco leaves and glycerin, and commercially available products well known to those skilled in the art can be used.

[0030] In the present invention, before the cigar tobacco leaves are mixed with glycerin, preferably the following steps are further included:

[0031] The cigar tobacco leaves are cut into shreds.

[0032] In the present invention, the mass ratio of the cigar tobacco leaves to the glycerin is preferably 1:(10-20), more preferably 1:(10-15).

[0033] In the present invention, the soaking time is preferably 8 h to 30 h, more preferably 10 h to 15 h.

[0034] After obtaining the soaking liquid, the present invention sequentially extracts, filters and performs reduced pressure distillation on the soaking liquid to obtain a distillate.

[0035] In the present invention, the extraction temperature is preferably 80° C. to 120° C., and the extraction time is preferably 3 h to 5 h.

[0036] In the present invention, the filtering process is preferably specifically as follows:

[0037] The extracted solution was filtered while hot through a 50-80 mesh filter to obtain a filtrate.

[0038] In the present invention, the pressure of the reduced pressure distillation is preferably 0.5 KPa to 10 KPa, and the temperature is preferably 141° C. to 216° C.

[0039] After obtaining the distillate, the present invention mixes the obtained distillate with ethanol and performs nanofiltration membrane concentration to obtain a cigar extract suitable for heating cigarettes. The present invention has no special restrictions on the source of the ethanol, and commercially available products known to those skilled in the art can be used; the purpose of adding ethanol is to dissolve the oily flavor substances.

[0040] In the present invention, the amount of ethanol used is preferably 0.5 to 1 times the mass of the distillate.

[0041] In the present invention, the mixing method is preferably stirring; the stirring speed is preferably 30 rpm to 100 rpm, and the stirring time is preferably 10 min to 20 min.

[0042] The present invention has no special restrictions on the type and source of the nanofiltration membrane, and a commercially available nanofiltration membrane known to those skilled in the art can be used; in a preferred embodiment of the present invention, the nanofiltration membrane is a DL2540 nanofiltration membrane from Suez Company, USA.

[0043] In the present invention, the membrane inlet pressure of the nanofiltration membrane concentration is preferably 0.6MPa-0.8MPa, the feed liquid temperature is preferably 25°C-33°C, the concentrate flux is preferably 124.8L / h-175.4L / h, and the concentration multiple is preferably 5-10 times; the obtained concentrate is a cigar extract suitable for heating cigarettes.

[0044] The invention provides a method for preparing a cigar extract suitable for heated cigarettes. The cigar extract prepared by the process has a high nicotine content and obvious cigar flavor characteristics. When used in heated cigarettes, it can increase physiological satisfaction and form a characteristic cigar flavor.

[0045] The present invention provides a method for preparing a cigar extract suitable for heating cigarettes, comprising the following steps: a) mixing cigar tobacco leaves with glycerol, soaking them, and obtaining a soaking liquid; b) extracting, filtering, and distilling the soaking liquid obtained in step a) in sequence, and obtaining a distillate; c) mixing the distillate obtained in step b) with ethanol, and concentrating it with a nanofiltration membrane, and obtaining a cigar extract suitable for heating cigarettes. Compared with the prior art, the preparation method provided by the present invention targets specific raw materials, adopts specific process steps, and achieves overall better interaction. The prepared cigar extract suitable for heating cigarettes retains the characteristic aroma components of cigars, and can form a characteristic cigar flavor when used in heating cigarettes.

[0046] At the same time, the preparation method provided by the present invention is simple to operate, has mild conditions and is easy to control, can be applied on a large scale in the preparation of new tobacco flavors and fragrances, and has broad application prospects.

[0047] In order to further illustrate the present invention, the following examples are provided for detailed description. The raw materials used in the following examples of the present invention are all commercially available products.

[0048] Example 1

[0049] (1) taking 100 g of cigar tobacco leaves, cutting them into shreds, adding 1000 g of glycerol, stirring, and soaking overnight to obtain a soaking liquid;

[0050] (2) extracting the soaking solution obtained in step (1) at 80° C. for 3 hours to obtain an extract;

[0051] (3) filtering the extract obtained in step (2) while hot under a 50-mesh filter to obtain a filtrate;

[0052] (4) distilling the filtrate obtained in step (3) under reduced pressure at 0.5 KPa and 141° C. to obtain a distillate;

[0053] (5) adding 1 times the mass of ethanol to the distillate obtained in step (4), stirring at 60 rpm for 15 min to dissolve the oily aroma substances in the distillate; finally filtering using a DL2540 nanofiltration membrane (Suez, USA), with a membrane inlet pressure of 0.7 MPa, a feed liquid temperature of 30° C., a concentrate flux of 150 L / h, and a concentration multiple of 8 times, to obtain a cigar extract suitable for heating cigarettes.

[0054] Example 2

[0055] (1) taking 100 g of cigar tobacco leaves, cutting them into shreds, adding 1500 g of glycerol, stirring, and soaking overnight to obtain a soaking liquid;

[0056] (2) extracting the soaking solution obtained in step (1) at 100° C. for 4 hours to obtain an extract;

[0057] (3) filtering the extract obtained in step (2) while hot under a 50-mesh filter to obtain a filtrate;

[0058] (4) distilling the filtrate obtained in step (3) under reduced pressure at 0.5 KPa and 141° C. to obtain a distillate;

[0059] (5) adding 0.5 times the mass of ethanol to the distillate obtained in step (4), stirring at 100 rpm for 10 min to dissolve the oily aroma substances in the distillate; finally filtering using a DL2540 nanofiltration membrane (Suez, USA), with a membrane inlet pressure of 0.6 MPa, a feed liquid temperature of 25° C., a concentrated liquid flux of 124.8 L / h, and a concentration multiple of 10 to obtain a cigar extract suitable for heating cigarettes.

[0060] Example 3

[0061] (1) taking 100 g of cigar tobacco leaves, cutting them into shreds, adding 1000 g of glycerol, stirring, and soaking overnight to obtain a soaking liquid;

[0062] (2) extracting the soaking solution obtained in step (1) at 120° C. for 5 hours to obtain an extract;

[0063] (3) filtering the extract obtained in step (2) while hot through a 80-mesh filter to obtain a filtrate;

[0064] (4) distilling the filtrate obtained in step (3) under reduced pressure at 10 KPa and 216° C. to obtain a distillate;

[0065] (5) adding 1 times the mass of ethanol to the distillate obtained in step (4), stirring at 30 rpm for 20 min to dissolve the oily aroma substances in the distillate; finally filtering using a DL2540 nanofiltration membrane (Suez, USA), with a membrane inlet pressure of 0.8 MPa, a feed liquid temperature of 33° C., a concentrated liquid flux of 175.4 L / h, and a concentration multiple of 5 to obtain a cigar extract suitable for heating cigarettes.

[0066] Example 4

[0067] (1) taking 100 g of cigar tobacco leaves, cutting them into shreds, adding 1500 g of glycerol, stirring, and soaking overnight to obtain a soaking liquid;

[0068] (2) extracting the soaking solution obtained in step (1) at 80° C. for 5 hours to obtain an extract;

[0069] (3) filtering the extract obtained in step (2) while hot through a 80-mesh filter to obtain a filtrate;

[0070] (4) distilling the filtrate obtained in step (3) under reduced pressure at 10 KPa and 216° C. to obtain a distillate;

[0071] (5) adding 0.5 times the mass of ethanol to the distillate obtained in step (4), stirring at 50 rpm for 15 min to dissolve the oily aroma substances in the distillate; finally filtering using a DL2540 nanofiltration membrane (Suez, USA), with a membrane inlet pressure of 0.7 MPa, a feed liquid temperature of 30° C., a concentrate flux of 150 L / h, and a concentration multiple of 8 times, to obtain a cigar extract suitable for heating cigarettes.

[0072] The present invention uses glycerol solution extraction and distillation, ethanol dissolution and nanofiltration membrane concentration to prepare a cigar extract. The cigar extract suitable for heating cigarettes prepared in Example 1 is further subjected to GC / MS analysis and sensory evaluation (the evaluation results are shown in Figure 1 , Table 1 and Table 2).

[0073] Table 1 GC / MC analysis results of cigar tobacco extract

[0074]

[0075]

[0076] Table 2 Overall characteristics evaluation of cigar extract

[0077]

[0078] The cigar extract prepared by the glycerol extraction and reduced pressure concentration processes of the present invention is analyzed by GC / MS, and 15 kinds of flavor substances including γ-caprolactone, furoic acid, 2,6-dimethylpyrazine, etc. are analyzed (see Table 1). At the same time, the nicotine content in the cigar extract is detected by high performance liquid chromatography, and the nicotine content reaches 50g / L. The cigar extract is used in heated cigarettes, and the heated cigarettes have the advantages of increased strength and obvious cigar characteristic aroma (see Table 2).

[0079] In summary, the present invention provides a method for preparing a cigar extract suitable for heated cigarettes. The cigar extract prepared by the process retains the characteristic aroma components of cigars and can be used in heated cigarettes to form a characteristic cigar flavor.

[0080] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for preparing a cigar extract suitable for heating cigarettes, comprising the following steps: a) mixing cigar tobacco leaves with glycerin and soaking them to obtain a soaking liquid; b) extracting, filtering and distilling the soaking liquid obtained in step a) in sequence to obtain a distillate; c) mixing the distillate obtained in step b) with ethanol and concentrating it through a nanofiltration membrane to obtain a cigar extract suitable for heating cigarettes.

2. The preparation method according to claim 1, characterized in that: Before the cigar tobacco leaves are mixed with glycerol in step a), the process further comprises: The cigar tobacco leaves are cut into shreds.

3. The preparation method according to claim 1, characterized in that: The mass ratio of the cigar tobacco leaves to the glycerin in step a) is 1:(10-20).

4. The preparation method according to claim 1, characterized in that: The soaking time in step a) is 8h to 30h.

5. The preparation method according to claim 1, characterized in that: The extraction temperature in step b) is 80° C. to 120° C., and the extraction time is 3 h to 5 h.

6. The preparation method according to claim 1, characterized in that: The filtering process in step b) is specifically as follows: The extracted solution was filtered while hot through a 50-80 mesh filter to obtain a filtrate.

7. The preparation method according to claim 1, characterized in that: The pressure of the reduced pressure distillation in step b) is 0.5KPa-10KPa, and the temperature is 141°C-216°C.

8. The preparation method according to claim 1, characterized in that: The amount of ethanol used in step c) is 0.5 to 1 times the mass of the distillate.

9. The preparation method according to claim 1, characterized in that: The mixing method in step c) is stirring; the stirring speed is 30 rpm to 100 rpm, and the stirring time is 10 min to 20 min.

10. The preparation method according to claim 1, characterized in that: The membrane inlet pressure of the nanofiltration membrane concentration in step c) is 0.6MPa-0.8MPa, the feed liquid temperature is 25°C-33°C, the concentrated liquid flux is 124.8L / h-175.4L / h, and the concentration multiple is 5-10 times.

Images