Preparation method of glutinous rice flavor type reconstituted cut stems as well as product and application of glutinous rice flavor type reconstituted cut stems

Abstract

The invention relates to a preparation method of glutinous rice flavor type reconstituted cut stems and a product and application thereof, the preparation method comprises the following steps: taking blank cut stems as a base material, and fumigating the base material with steam obtained by a hydrothermal reaction of a glutinous rice grassland raw material to obtain steam fumigated cut stems; and then backfilling the tobacco compound liquid into the product, and drying to obtain the glutinous rice flavor type reconstituted cut stem, the tobacco composite liquid comprises the following components: a tobacco water extract, a tobacco alcohol extract and a flavor retention agent. According to the method, the steam with the sticky rice fragrance permeates into the blank cut stems in a fumigation mode, so that the prepared reconstituted cut stems have the soft, fine and sweet sticky rice fragrance, the fragrance is uniform, stimulation and offensive odor of the cut stems can be reduced, and the smoking quality is improved; furthermore, the cut stems are backfilled with the tobacco composite liquid containing the aroma retention agent, so that loss of aroma components in the drying process of the cut stems can be effectively prevented, the aroma can be retained for a longer time, and the problem that the aroma retention time is short is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of reconstituted shredded stem production, and relates to a preparation method of glutinous rice-flavored reconstituted shredded stem, a product thereof and an application thereof. Background Art

[0002] The stem shred regeneration technology is to extract the water-soluble substances in the stem shreds through solvents, and then add the backfilling liquid to the blank stem shreds after extraction through backfilling. The regenerated stem shreds have a loose structure and are in the form of soft silk strips. They have a high filling capacity and are orange to brown in color, similar to leaf shreds. After blending, the tobacco shreds have good color uniformity and the sensory quality is significantly better than conventional stem shreds.

[0003] The shredded tobacco stems produced by traditional processes have a strong smell and irritation, and the flavor and smoke harmony of the produced cigarettes are poor; at the same time, adding flavor to traditional shredded tobacco stems often results in uneven flavoring and short fragrance retention. Therefore, it is of great significance to innovate the manufacturing process of reconstituted shredded tobacco stems to reduce the smell and irritation of shredded tobacco stems, while efficiently retaining the aroma components, thereby further optimizing the smoking quality and producing high-quality tobacco reconstituted raw materials. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a method for preparing glutinous rice flavored reconstituted shredded stems, and a product and application thereof.

[0005] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a method for preparing glutinous rice flavored reconstituted shredded stems, the method comprising the following steps:

[0007] (1) using blank shredded stems as a substrate, fumigating the shredded stems with steam obtained by hydrothermal reaction of glutinous rice grass raw materials, and obtaining steam-fumigated shredded stems;

[0008] (2) then backfilling the tobacco composite liquid into the product of step (1), drying, and obtaining the glutinous rice flavored reconstituted stem shreds;

[0009] The components of the tobacco composite liquid include tobacco water extract, tobacco alcohol extract and a flavor preservative.

[0010] The present invention develops a new production process for reconstructed shredded stems, which uses blank shredded stems as the base material, and infiltrates the blank shredded stems with glutinous rice aroma by fumigation, which not only makes the prepared reconstructed shredded stems have a soft, delicate, sweet and glutinous rice aroma, and the aroma is uniform, but also reduces the irritation and impurities of the shredded stems, and improves the smoking quality; further, the tobacco composite liquid containing the aroma preservative is backfilled into the shredded stems, which can effectively prevent the loss of aroma components during the drying process of the shredded stems, so that the aroma is retained for a longer time, and solves the problem of short aroma retention time; wherein the tobacco water extract and the tobacco alcohol extract cooperate with each other, and also synergistically improve the aroma and other smoking qualities of the product. The above-mentioned numerous technical means work together to comprehensively improve the smoking quality of the product.

[0011] Preferably, the glutinous rice grass raw material is crushed glutinous rice grass.

[0012] Preferably, in the hydrothermal reaction, the material-liquid ratio of glutinous rice grass raw material to water is 1:(5-15) g / mL, for example 5 g / mL, 7 g / mL, 8 g / mL, 9 g / mL, 10 g / mL, 12 g / mL, 15 g / mL, etc.

[0013] Preferably, the hydrothermal reaction is carried out at 100-120°C (eg, 100°C, 105°C, 110°C, 115°C, 120°C, etc.).

[0014] Preferably, the hydrothermal reaction is carried out for 40-80 min (e.g., 40 min, 50 min, 60 min, 70 min, 80 min, etc.).

[0015] Preferably, the mass ratio of the glutinous rice grass raw material to the blank stem shreds is 1:500-1:900 (eg, 1:500, 1:600, 1:700, 1:800, 1:900, etc.).

[0016] Other specific point values ​​within the above numerical ranges can be selected and will not be described in detail here.

[0017] Preferably, the steam is introduced into a high-pressure stem steaming device through a pipe to fumigate the blank stem shreds.

[0018] Preferably, the steam pressure of the fumigation is 0.2-0.5 MPa, for example, 0.2 MPa, 0.3 MPa, 0.4 MPa, 0.5 MPa, etc.; the temperature is 110-140°C, for example, 110°C, 115°C, 120°C, 125°C, 130°C, 135°C, 140°C, etc.; the time is 80-100s, for example, 80s, 85s, 90s, 95s, 100s, etc.

[0019] When the steam pressure, temperature and time of the fumigation meet the above-mentioned specific numerical ranges, the effect of the glutinous rice aroma steam penetrating into the blank shredded stems is better, and the effect of reducing the irritation and impurities of the shredded stems and improving the smoking quality is better.

[0020] Other specific point values ​​within the above numerical ranges can be selected and will not be described in detail here.

[0021] Preferably, the flavoring agent includes any one of sorbitol, propylene glycol or ethyl caprate, or a combination of at least two of them; more preferably, a combination of sorbitol, propylene glycol and ethyl caprate.

[0022] Compared with other flavor preservative selection methods, the combination of sorbitol, propylene glycol and ethyl caprate as a flavor preservative retains the aroma for a longer period of time, thereby improving the smoking quality.

[0023] Preferably, the components of the tobacco composite liquid include, by weight, 40-55 parts of tobacco water extract, 40-55 parts of tobacco alcohol extract and 1-10 parts of flavor preservative.

[0024] The mass fraction of the tobacco water extract can be selected from 40 parts, 42 parts, 45 parts, 47 parts, 50 parts, 52 parts, 54 parts, 55 parts, etc.; the mass fraction of the tobacco alcohol extract can be selected from 40 parts, 42 parts, 45 parts, 47 parts, 50 parts, 52 parts, 54 parts, 55 parts, etc.; the mass fraction of the flavor preservative can be selected from 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, etc.

[0025] Other specific point values ​​within the above numerical ranges can be selected and will not be described in detail here.

[0026] Preferably, the tobacco composite liquid also includes water, so that the concentration of the tobacco composite liquid is 35-40%, such as 35%, 36%, 37%, 38%, 39%, 40%, etc.

[0027] Preferably, the method for preparing the tobacco water extract comprises: mixing tobacco powder with water for hot extraction, filtering, and obtaining.

[0028] Preferably, the solid-liquid ratio of the tobacco powder to water is 1:(8-15) g / mL, for example 1:8 g / mL, 1:9 g / mL, 1:10 g / mL, 1:11 g / mL, 1:12 g / mL, 1:13 g / mL, 1:14 g / mL, 1:15 g / mL, etc.

[0029] Preferably, the hot dipping temperature is 60-80°C, for example, 60°C, 65°C, 70°C, 75°C, 80°C, etc.; the hot dipping time is 0.5-1.5h, for example, 0.5h, 0.7h, 0.8h, 0.9h, 1.0h, 1.2h, 1.3h, 1.5h, etc.

[0030] Preferably, the filtration is followed by concentration to a solid content of 20-40%, such as 20%, 25%, 30%, 35%, 40%, etc.

[0031] Other specific point values ​​within the above numerical ranges can be selected and will not be described in detail here.

[0032] Preferably, the method for preparing the tobacco alcohol extract comprises: mixing tobacco powder with an ethanol aqueous solution for hot extraction, filtering, and obtaining.

[0033] Preferably, the concentration of the ethanol aqueous solution is 50-75%, for example, 50%, 53%, 55%, 58%, 60%, 63%, 65%, 70%, 75%, etc.

[0034] Preferably, the solid-liquid ratio of the tobacco powder to the ethanol aqueous solution is 1:(8-15) g / mL, for example 1:8 g / mL, 1:9 g / mL, 1:10 g / mL, 1:11 g / mL, 1:12 g / mL, 1:13 g / mL, 1:14 g / mL, 1:15 g / mL, etc.

[0035] Preferably, the hot extraction temperature is 35-55°C, for example, 35°C, 37°C, 38°C, 40°C, 42°C, 43°C, 45°C, 50°C, 55°C, etc.; the hot extraction time is 0.5-1.5h, for example, 0.5h, 0.7h, 0.8h, 0.9h, 1.0h, 1.2h, 1.3h, 1.5h, etc.

[0036] Preferably, the filtration is followed by concentration to a solid content of 20-40%, such as 20%, 25%, 30%, 35%, 40%, etc.

[0037] Other specific point values ​​within the above numerical ranges can be selected and will not be described in detail here.

[0038] Preferably, the backfill rate in the backfill is 30-45%, for example, 30%, 32%, 35%, 38%, 40%, 42%, 43%, 44%, 45%, etc.

[0039] The backfilling method may be to spray the tobacco composite liquid uniformly onto the product of step (1), and stir and mix until the components of the tobacco composite liquid are fully penetrated.

[0040] The backfill rate involved in the present invention refers to the mass percentage of the solute in the tobacco composite liquid to the final product.

[0041] Preferably, the drying method includes fluidized bed drying.

[0042] Preferably, the feed flow rate in the fluidized bed drying is 600-900kg / h, for example 600kg / h, 650kg / h, 700kg / h, 750kg / h, 800kg / h, 850kg / h, 900kg / h, etc.; the wind temperature is 70-90°C, for example 70°C, 75°C, 80°C, 85°C, 90°C, etc.; the moisture content of the material at the outlet is 12-13%, for example 12%, 12.2%, 12.4%, 12.5%, 12.6%, 12.8%, 13%, etc.

[0043] Other specific point values ​​within the above numerical ranges can be selected and will not be described in detail here.

[0044] In the present invention, the blank shredded tobacco stems are prepared by sequentially washing, pressure-moistening, pressing, shredding, extracting and drying the tobacco stem raw materials.

[0045] Preferably, the stem washing time is 30-50s, for example, 30s, 35s, 40s, 45s, 50s, etc.; the stem washing water temperature is 30-40°C, for example, 30°C, 32°C, 35°C, 38°C, 40°C, etc.

[0046] Preferably, the pressure in the pressure lubrication is 0.2-0.5MPa, for example, 0.2MPa, 0.25MPa, 0.3MPa, 0.35MPa, 0.4MPa, 0.5MPa, etc.; the temperature is 100-120℃, for example, 100℃, 105℃, 110℃, 115℃, 120℃, etc.; the time is 20-60s, for example, 20s, 25s, 30s, 35s, 40s, 45s, 50s, 55s, 60s, etc.

[0047] Preferably, the stem pressing is performed using a stem pressing machine, and the spacing between the pressing rollers is 0.7-1.0 mm, such as 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, etc.

[0048] Preferably, the thickness of the shredded wire is 0.10-0.12 mm, for example, 0.10 mm, 0.105 mm, 0.11 mm, 0.115 mm, 0.118 mm, 0.12 mm, etc.

[0049] Preferably, the extraction is carried out by single spiral countercurrent extraction, the water temperature is 40-50°C, for example 40°C, 42°C, 45°C, 48°C, 50°C, etc.; the time is 20-40min, for example 20min, 22min, 25min, 28min, 30min, 32min, 35min, 38min, 40min, etc.

[0050] Preferably, the drying is performed until the moisture content is 23-25%, such as 23%, 24%, 25%, etc.

[0051] Other specific point values ​​within the above numerical range can be selected and will not be described in detail here.

[0052] In a second aspect, the present invention provides glutinous rice flavored reconstituted shredded stems prepared by the preparation method described in the first aspect.

[0053] In a third aspect, the present invention provides use of the glutinous rice flavored reconstituted shredded stems described in the second aspect in the preparation of cigarette products.

[0054] Compared with the prior art, the present invention has the following beneficial effects:

[0055] The present invention develops a new production process for reconstructed shredded stems, which uses blank shredded stems as the base material, and infiltrates the blank shredded stems with glutinous rice aroma by fumigation, which not only makes the prepared reconstructed shredded stems have a soft, delicate, sweet and glutinous rice aroma, and the aroma is uniform, but also reduces the irritation and impurities of the shredded stems, and improves the smoking quality; further, the tobacco composite liquid containing the aroma preservative is backfilled into the shredded stems, which can effectively prevent the loss of aroma components during the drying process of the shredded stems, so that the aroma is retained for a longer time, and solves the problem of short aroma retention time; wherein the tobacco water extract and the tobacco alcohol extract cooperate with each other, and also synergistically improve the aroma and other smoking qualities of the product. The above-mentioned numerous technical means work together to comprehensively improve the smoking quality of the product. DETAILED DESCRIPTION

[0056] In order to further explain the technical means and effects adopted by the present invention, the technical solution of the present invention is further described below in conjunction with the preferred embodiments of the present invention, but the present invention is not limited to the scope of the embodiments.

[0057] Example 1

[0058] This embodiment provides a reconstituted shredded stem, and the preparation method thereof is as follows:

[0059] (1) Preparation of blank stem shreds: The tobacco stem raw materials were sent to a stem washer for washing for 40 seconds at a water temperature of 40°C; the tobacco stems were moistened in a pressure moistening machine with high-pressure steam for 40 seconds at a pressure of 0.20 MPa and a temperature of 120°C; the tobacco stems were pressed by a stem press with a roller spacing of 0.7 mm; the tobacco stems were cut by a shredder with a shredding thickness of 0.10 mm; the tobacco stems were extracted by single spiral countercurrent extraction at a water temperature of 40°C for 30 minutes; the moisture content was 23% after airflow drying, and blank stem shreds with uniform quality were obtained.

[0060] (2) Hydrothermal steam fumigation: Place glutinous rice grass powder in a hydrothermal reactor, add deionized water, solid-liquid ratio of 1:8 g / mL, temperature of 100°C, time of 80 min. The obtained glutinous rice fragrant steam is introduced into a high-pressure stem steaming device through a pipe to fumigate blank stems. The mass ratio of glutinous rice grass powder to blank stems is 1:500, the steam pressure is 0.2 MPa, the temperature is 140°C, and the time is 80 s.

[0061] (3) Preparation and backfilling of tobacco composite liquid:

[0062] (3.1) The tobacco powder was passed through a 120-mesh standard sieve and mixed with water at a solid-liquid ratio of 1:8 g / mL, and hot-extracted at 70° C. for 0.5 h, and concentrated to a solid content of 40% to obtain a tobacco aqueous extract;

[0063] (3.2) The tobacco powder was passed through a 120-mesh standard sieve and mixed with a 60% ethanol aqueous solution at a solid-liquid ratio of 1:8 g / mL, and hot-extracted at 45° C. for 0.5 h, and concentrated to a solid content of 40% to obtain a tobacco alcohol extract;

[0064] (3.3) Mix 45 parts of tobacco water extract, 54 parts of tobacco alcohol extract and 3 parts of sorbitol, adjust the concentration of the composite solution to 35% with distilled water, and mix it into a uniform fluid by mechanical action. Spray the tobacco composite liquid evenly on the product of step (2), stir and mix, and wait until the components of the tobacco composite liquid are fully penetrated and the backfill rate is 35%.

[0065] (4) Drying: The product of step (3) is introduced into a fluidized bed for drying, with a feed flow rate of 700 kg / h, a wind temperature of 80° C., and a moisture content of 12.5% ​​at the material outlet.

[0066] Example 2

[0067] This embodiment provides a reconstituted shredded stem, and the preparation method thereof is as follows:

[0068] (1) Preparation of blank stem shreds: The tobacco stem raw material is sent to a stem washer for washing for 40 seconds at a water temperature of 35°C; the tobacco stem raw material is moistened in a pressure-steamed stem moistener for 40 seconds at a pressure of 0.30 MPa and a temperature of 110°C; the tobacco stem is pressed by a stem press with a roller spacing of 0.8 mm; the tobacco stem is cut by a shredder with a shredding thickness of 0.11 mm; the tobacco stem is extracted by single spiral countercurrent extraction at a water temperature of 45°C for 20 minutes; the moisture content is 24% after airflow drying, and blank stem shreds with uniform quality are obtained.

[0069] (2) Hydrothermal steam fumigation: Place glutinous rice grass powder in a hydrothermal reactor, add deionized water, solid-liquid ratio of 1:10 g / mL, temperature of 110°C, time of 60 min. The obtained glutinous rice fragrant steam is introduced into a high-pressure stem steaming device through a pipe to fumigate blank stems. The mass ratio of glutinous rice grass powder to blank stems is 1:600, the steam pressure is 0.3 MPa, the temperature is 120°C, and the time is 90 s.

[0070] (3) Preparation and backfilling of tobacco composite liquid:

[0071] (3.1) The tobacco powder was passed through a 120-mesh standard sieve and mixed with water at a solid-liquid ratio of 1:9 g / mL, and hot-extracted at 60° C. for 1.5 h, and concentrated to a solid content of 35% to obtain a tobacco aqueous extract;

[0072] (3.2) The tobacco powder was passed through a 120-mesh standard sieve and mixed with a 70% ethanol aqueous solution at a solid-liquid ratio of 1:9 g / mL, and hot-extracted at 35° C. for 1.5 h, and concentrated to a solid content of 35% to obtain a tobacco alcohol extract;

[0073] (3.3) Mix 43 parts of tobacco water extract, 50 parts of tobacco alcohol extract, and 3 parts of 1,3-propylene glycol, adjust the concentration of the composite solution to 40% with distilled water, and mix it into a uniform fluid by mechanical action. Spray the tobacco composite liquid evenly on the product of step (2), stir and mix, and wait until the components of the tobacco composite liquid are fully penetrated, and the backfill rate is 40%.

[0074] (4) Drying: The product of step (3) is introduced into a fluidized bed for drying, with a feed flow rate of 800 kg / h, a wind temperature of 70° C., and a moisture content of 12.5% ​​at the material outlet.

[0075] Example 3

[0076] This embodiment provides a reconstituted shredded stem, and the preparation method thereof is as follows:

[0077] (1) Preparation of blank stem shreds: The tobacco stem raw materials are sent to a stem washer for washing for 40 seconds at a water temperature of 30°C; the tobacco stems are moistened in a pressure moistening machine with high-pressure steam for 40 seconds at a pressure of 0.50 MPa and a temperature of 100°C; the tobacco stems are pressed by a stem press with a roller spacing of 1.0 mm; the tobacco stems are cut by a shredder with a shredding thickness of 0.12 mm; the tobacco stems are extracted by single spiral countercurrent extraction at a water temperature of 50°C for 30 minutes; the moisture content is 25% after air flow drying, and blank stem shreds with uniform quality are obtained.

[0078] (2) Hydrothermal steam fumigation: Place glutinous rice grass powder in a hydrothermal reactor, add deionized water, solid-liquid ratio of 1:15 g / mL, temperature of 120°C, time of 40 min. The obtained glutinous rice fragrant steam is introduced into a high-pressure stem steaming device through a pipe to fumigate blank stems. The mass ratio of glutinous rice grass powder to blank stems is 1:700, the steam pressure is 0.5 MPa, the temperature is 110°C, and the time is 100 s.

[0079] (3) Preparation and backfilling of tobacco composite liquid:

[0080] (3.1) The tobacco powder was passed through a 120-mesh standard sieve and mixed with water at a solid-liquid ratio of 1:8 g / mL, and hot-extracted at 70° C. for 0.5 h, and concentrated to a solid content of 40% to obtain a tobacco aqueous extract;

[0081] (3.2) The tobacco powder was passed through a 120-mesh standard sieve and mixed with a 60% ethanol aqueous solution at a solid-liquid ratio of 1:8 g / mL, and hot-extracted at 45° C. for 0.5 h, and concentrated to a solid content of 40% to obtain a tobacco alcohol extract;

[0082] (3.3) Mix 50 parts of tobacco water extract, 43 parts of tobacco alcohol extract and 3 parts of ethyl caprate, adjust the concentration of the composite solution to 35% with distilled water, and mix it into a uniform fluid by mechanical action. Spray the tobacco composite liquid evenly on the product of step (2), stir and mix, and wait until the components of the tobacco composite liquid are fully penetrated, and the backfill rate is 45%.

[0083] (4) Drying: The product of step (3) is introduced into a fluidized bed for drying, with a feed flow rate of 600 kg / h, an air temperature of 90° C., and a moisture content of 12.5% ​​at the material outlet.

[0084] Example 4

[0085] This embodiment provides a reconstituted shredded stem, and the preparation method thereof is different from that of Embodiment 1 only in that 3 parts of sorbitol are replaced by 1.5 parts of 1,3-propylene glycol and 1.5 parts of ethyl caprate, and other conditions remain the same.

[0086] Example 5

[0087] This embodiment provides a reconstituted shredded stem, and the preparation method thereof is different from that of Embodiment 1 only in that 3 parts of sorbitol are replaced by 1.5 parts of sorbitol and 1.5 parts of ethyl caprate, and other conditions remain the same.

[0088] Example 6

[0089] This embodiment provides a reconstituted shredded stem, and the preparation method thereof is different from that of Embodiment 1 only in that 3 parts of sorbitol are replaced by 1.5 parts of sorbitol and 1.5 parts of 1,3-propylene glycol, and other conditions remain the same.

[0090] Example 7

[0091] This embodiment provides a reconstituted shredded stem, and the preparation method thereof is different from that of Embodiment 1 only in that 3 parts of sorbitol are replaced by 1 part of sorbitol, 1 part of 1,3-propylene glycol and 1 part of ethyl caprate, and other conditions remain the same.

[0092] Comparative Example 1

[0093] This comparative example provides a reconstituted shredded stem, the preparation method of which is different from that of Example 1 only in that sorbitol is absent in the tobacco composite liquid, and other conditions remain unchanged.

[0094] Comparative Example 2

[0095] This comparative example provides a reconstituted shredded stem, the preparation method of which is different from that of Example 1 only in that the tobacco composite liquid lacks tobacco water extract, and the reduced amount is supplemented by tobacco alcohol extract, and other conditions remain unchanged.

[0096] Comparative Example 3

[0097] This comparative example provides a reconstituted shredded stem, the preparation method of which is different from that of Example 1 only in that the tobacco composite liquid lacks tobacco alcohol extract, and the reduced amount is supplemented by tobacco water extract, and other conditions remain unchanged.

[0098] Comparative Example 4

[0099] This comparative example provides a reconstituted shredded stem, the preparation method of which is different from that of Example 1 in that the blank shredded stem is not subjected to the hydrothermal steam aroma treatment of step (2), and steps (3) and (4) are directly performed, as follows:

[0100] (1) Preparation of blank stem shreds: The tobacco stem raw materials were sent to a stem washer for washing for 40 seconds at a water temperature of 40°C; the tobacco stems were moistened in a pressure moistening machine with high-pressure steam for 40 seconds at a pressure of 0.20 MPa and a temperature of 120°C; the tobacco stems were pressed by a stem press with a roller spacing of 0.7 mm; the tobacco stems were cut by a shredder with a shredding thickness of 0.10 mm; the tobacco stems were extracted by single spiral countercurrent extraction at a water temperature of 40°C for 30 minutes; the moisture content was 23% after airflow drying, and blank stem shreds with uniform quality were obtained.

[0101] (2) Preparation and backfilling of tobacco composite liquid:

[0102] (2.1) The tobacco powder was passed through a 120-mesh standard sieve and mixed with water at a solid-liquid ratio of 1:8 g / mL, and hot-extracted at 70° C. for 0.5 h, and concentrated to a solid content of 40% to obtain a tobacco aqueous extract;

[0103] (2.2) passing tobacco powder through a 120-mesh standard sieve, mixing it with a 60% ethanol aqueous solution at a solid-liquid ratio of 1:8 g / mL, performing hot extraction at 45° C. for 0.5 h, and concentrating it to a solid content of 40% to obtain a tobacco alcohol extract;

[0104] (2.3) Mix 45 parts of tobacco water extract, 54 parts of tobacco alcohol extract and 3 parts of sorbitol, adjust the concentration of the composite solution to 35% with distilled water, and mix it into a uniform fluid by mechanical action. Spray the tobacco composite liquid evenly on the product of step (1), stir and mix, and wait until the components of the tobacco composite liquid are fully penetrated, and the backfill rate is 35%.

[0105] (3) Drying: The product of step (2) is introduced into a fluidized bed for drying, with a feed flow rate of 700 kg / h, a wind temperature of 80° C., and a moisture content of 12.5% ​​at the material outlet.

[0106] Test Example 1

[0107] Take the same amount of the reconstituted stems prepared in Examples 1-7 and Comparative Examples 1-4 to make cigarette samples, and the specific operation is as follows: place the reconstituted stem samples in a constant temperature and humidity chamber (temperature 25±2°C, relative humidity 60±2%) for 48 hours, control the moisture content to about 12.5%, and use a laboratory cigarette machine to roll cigarettes. Immediately send to the sensory quality evaluation committee for sensory evaluation, the interpretation of each index is shown in Table 1, the evaluation criteria are shown in Table 2, and there are 7 evaluators in total.

[0108] Table 1: Sensory quality evaluation indexes and interpretations of reconstituted shredded stems

[0109]

[0110]

[0111] Table 2: Scoring scale for sensory evaluation of reconstituted shredded stems

[0112]

[0113] The scoring results of each group are shown in Table 3:

[0114] Table 3: Sensory quality evaluation results of reconstituted shredded stem samples

[0115]

[0116]

[0117] It can be seen from the results in Table 3 that, compared with the products in the comparative examples, the reconstituted shredded stem products prepared by the preparation method of the present invention have more excellent sensory quality; the flavor preservatives sorbitol, ethyl caprate and propylene glycol synergistically enhance the aroma and other smoking qualities of the product; and the tobacco water extract and tobacco alcohol extract also synergistically affect the smoking quality of the product to a certain extent.

[0118] The applicant declares that the present invention illustrates the technical solution of the present invention through the above-mentioned embodiments, but the present invention is not limited to the above-mentioned embodiments, that is, it does not mean that the present invention must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of various raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0119] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0120] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A method for preparing glutinous rice flavored reconstituted shredded stems, characterized in that: The preparation method comprises the following steps: (1) using blank shredded stems as a substrate and fumigating the shredded stems with steam obtained by hydrothermal reaction of glutinous rice grass raw materials to obtain steam-fumigated shredded stems; (2) then backfilling the tobacco composite liquid into the product of step (1), drying, and obtaining the glutinous rice flavored reconstituted stem shreds; The components of the tobacco composite liquid include tobacco water extract, tobacco alcohol extract and a flavor preservative.

2. The method for preparing glutinous rice flavored reconstituted shredded stems according to claim 1, characterized in that: The glutinous rice grass raw material is crushed glutinous rice grass; Preferably, in the hydrothermal reaction, the material-liquid ratio of the glutinous rice grass raw material to water is 1:(5-15) g / mL; Preferably, the temperature of the hydrothermal reaction is 100-120° C., and the time of the hydrothermal reaction is 40-80 min.

3. The method for preparing glutinous rice flavored reconstituted shredded stems according to claim 1 or 2, characterized in that: The steam is introduced into the high-pressure stem steaming device through the pipe to fumigate the blank stem shreds; Preferably, the steam pressure of the fumigation is 0.2-0.5 MPa, the temperature is 110-140° C., and the time is 80-100 s.

4. The method for preparing glutinous rice flavored reconstituted shredded stems according to any one of claims 1 to 3, characterized in that: The flavoring agent includes any one of sorbitol, propylene glycol or ethyl caprate or a combination of at least two of them; more preferably, a combination of sorbitol, propylene glycol and ethyl caprate.

5. The method for preparing glutinous rice flavored reconstituted shredded stems according to any one of claims 1 to 4, characterized in that: The components of the tobacco composite liquid include, by weight, 40-55 parts of tobacco water extract, 40-55 parts of tobacco alcohol extract and 1-10 parts of flavor preservative; Preferably, the tobacco composite liquid also includes water, so that the concentration of the tobacco composite liquid is 35-40%.

6. The method for preparing glutinous rice flavored reconstituted shredded stems according to any one of claims 1 to 5, characterized in that: The preparation method of the tobacco water extract comprises: mixing tobacco powder with water for hot extraction, filtering, and obtaining; Preferably, the material-liquid ratio of the tobacco powder to water is 1:(8-15) g / mL; Preferably, the temperature of the hot soaking is 60-80°C, and the time of the hot soaking is 0.5-1.5h; Preferably, the filtration is followed by concentration to a solid content of 20-40%; Preferably, the method for preparing the tobacco alcohol extract comprises: mixing tobacco powder with an ethanol aqueous solution for hot extraction, filtering, and obtaining; Preferably, the concentration of the ethanol aqueous solution is 50-75%; Preferably, the solid-liquid ratio of the tobacco powder to the ethanol aqueous solution is 1:(8-15) g / mL; Preferably, the temperature of the hot soaking is 35-55°C, and the time of the hot soaking is 0.5-1.5h; Preferably, the filtration is followed by concentration to a solid content of 20-40%.

7. The method for preparing glutinous rice flavored reconstituted shredded stems according to any one of claims 1 to 6, characterized in that: The backfilling rate in the backfilling is 30-45%; Preferably, the drying method includes fluidized bed drying; Preferably, the feed flow rate in the fluidized bed drying is 600-900 kg / h, the wind temperature is 70-90° C., and the moisture content of the material outlet is 12-13%.

8. The method for preparing glutinous rice flavored reconstituted shredded stems according to any one of claims 1 to 7, characterized in that: The blank cut stems are prepared by sequentially washing, pressurizing, pressing, shredding, extracting and drying the tobacco stem raw materials; Preferably, the stem washing time is 30-50s, and the stem washing water temperature is 30-40°C; Preferably, the pressure in the pressure lubrication is 0.2-0.5 MPa, the temperature is 100-120° C., and the time is 20-60 s; Preferably, the stem pressing is performed using a stem pressing machine, and the spacing between the pressing rollers is 0.7-1.0 mm; Preferably, the thickness of the shredded material is 0.10-0.12 mm; Preferably, the extraction is performed by single spiral countercurrent extraction, the water temperature is 40-50°C, and the time is 20-40min; Preferably, the drying is performed until the moisture content is 23-25%.

9. Glutinous rice flavored reconstituted shredded stems prepared by the preparation method according to any one of claims 1 to 8.

10. Use of the glutinous rice flavored reconstituted shredded stems according to claim 9 in the preparation of cigarette products.

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