CN106666806A - Preparation method for tobacco shreds of tablet cigarette - Google Patents

Abstract

The invention relates to a preparation method for tobacco shreds of a tablet cigarette and belongs to the technical field of tobacco preparation. The preparation method for the tobacco shreds of the tablet cigarette provided by the invention comprises the following steps of: 1) stacking and covering red sun-cured tobacco leaves for at least 24 hours in a shade place; 2) removing main blade veins and cutting the tobacco leaves into tobacco shreds; 3) withering the tobacco shreds in sunlight till the water content of the tobacco shreds is 50%-70%; 4) frying the withered tobacco shreds, maintaining the temperature of the tobacco shreds at 50-90 DEG C in a frying process and frying till the water content of the tobacco shreds is 10%-12%, thereby acquiring the tobacco shreds of the tablet cigarette. According to the preparation method provided by the invention, the nitrosoamines (TSNAs) content in the tobacco leaves can be effectively reduced.

Description

A kind of preparation method of snus shredded tobacco

technical field

The invention relates to the technical field of tobacco leaf preparation, in particular to a method for preparing snus shredded tobacco.

Background technique

Our country is rich in sun-cured red tobacco resources, with a long history of planting and a wide distribution range. Red sun-cured tobacco is not only an indispensable and important raw material for the production of blended cigarettes, but also the main raw material for new tobacco products. Red sun-cured tobacco is mostly dark brown or brown after drying, generally has low sugar content, high protein and nicotine content, strong smoke flavor and strong strength; it is mainly used for snus, pipe tobacco, hookah and mixed cigarettes .

Cullen's research found that nitrosamines (TSNAS) in snus can cause cancer of the oral cavity and throat. Smoking nitrosamines in new tobacco products are mainly infiltrated by saliva in the mouth and absorbed by the human body through the oral cavity, and nitrosamines are internationally recognized strong carcinogens, and have been confirmed to be associated with the esophagus, oral cavity and Cancerous changes in the liver and other parts. Therefore, nitrosamines are important indicators of the safety of smokeless tobacco products.

In the prior art, the preparation of sun-dried red tobacco usually includes the steps of folding, drying, and shelf-drying, but there is no report in the prior art on a technical solution for reducing the nitrosamine content of snus shredded tobacco.

Contents of the invention

The purpose of the present invention is to provide a preparation method of snus shredded tobacco. The preparation method provided by the invention has short preparation time and low cost, and the obtained snus cut tobacco has low content of nitrosamine.

The invention provides a method for preparing snus shredded tobacco, comprising the following steps:

1) Stack the sun-cured red tobacco leaves in a cool place for at least 24 hours;

2) remove the main vein of the blade, and cut the tobacco leaf into shredded tobacco;

3) wilting the shredded tobacco in sunlight until the water content of the shredded tobacco is 50% to 70%;

4) Frying the shredded tobacco after wilting. During the frying process, the temperature of the shredded tobacco is kept at 50° C. to 90° C. until the moisture content of the shredded tobacco is 10% to 12%, so as to obtain shredded snus tobacco.

Preferably, the width of the shredded tobacco in step 2) is 1-2 mm.

Preferably, the wilting time in step 3) is 4-7 hours.

Preferably, the step 3) after wilting further includes: fermenting the shredded tobacco after kneading.

Preferably, the fermentation condition is: ferment at 30° C. to 50° C. for 3 to 8 hours.

Preferably, the temperature of the container used for frying in step 4) is 180°C to 300°C.

Preferably, the step 4) after frying further includes: stacking and fermenting the fried shredded tobacco to obtain snus shredded tobacco; the temperature of the stacking and fermentation is 25-34° C. The humidity is 10-13%.

Preferably, in the stack fermentation, the distance from the lowest end of the smoke pile to the ground is 30 cm, and the distance from the wall is 10 cm.

Preferably, the time for the stack fermentation is 10 to 15 days.

The invention provides a preparation method of snus shredded tobacco. The preparation method provided by the invention has short preparation time and low cost, and through the specific setting of stacking, wilting and frying conditions, snus shredded tobacco with low nitrosamine content is obtained. The experimental results show that the nitrosamine content of the tobacco leaves obtained by the preparation method of the present invention is 0.271 mg/kg, which is far less than 13.74 mg/kg by the traditional method.

detailed description

The invention provides a method for preparing snus shredded tobacco, comprising the following steps:

1) Stack the sun-cured red tobacco leaves in a cool place for at least 24 hours;

2) remove the main vein of the blade, and cut the tobacco leaf into shredded tobacco;

3) wilting the shredded tobacco in sunlight until the water content of the shredded tobacco is 50% to 70%;

4) Frying the shredded tobacco after wilting. During the frying process, the temperature of the shredded tobacco is kept at 50° C. to 90° C. until the moisture content of the shredded tobacco is 10% to 12%, so as to obtain shredded snus tobacco.

In the present invention, the sun-cured red tobacco leaves are stacked and covered for at least 24 hours in a cool place. The present invention has no special limitation on the collection of the sun-cured red tobacco leaves, and conventional collection methods known to those skilled in the art can be adopted, such as collecting yellow and mature sun-cured tobacco leaves in sunny weather. The present invention has no special limitation on the source of the red sun-cured tobacco, and conventional varieties of sun-cured red tobacco well known to those skilled in the art can be used.

After the sun-cured tobacco leaves are stacked and covered in a cool place, the present invention removes the main veins of the sun-cured tobacco leaves, and cuts the tobacco leaves into shredded tobacco. In the present invention, the width of the shredded tobacco is preferably 1-2 mm.

After the shredded tobacco is obtained, the present invention wilts the shredded tobacco under sunlight until the water content of the shredded tobacco is 50%-70%, preferably 60-65%. In the present invention, the wilting time is 4-7 hours, preferably 5-6 hours.

In the present invention, the step 3) after wilting preferably further includes: kneading the shredded tobacco after wilting and then fermenting. The present invention has no special limitation on the method of rolling, and the technical scheme of conventional rolling in the shredded tobacco preparation process well-known to those skilled in the art can be adopted; in the embodiments of the present invention, the rolling method is preferably using hands to The final shredded tobacco is twisted until it does not disperse into a ball when held by hand.

In the present invention, the fermentation process is preferably: placing the rolled cut tobacco in a closed environment and fermenting at 30-50°C for 3-8 hours; more preferably 45°C for 5 hours.

After the wilted shredded tobacco or fermented shredded tobacco is obtained, the present invention frys the wilted shredded tobacco or fermented flue gas, and the temperature of the shredded tobacco during the frying process is kept at 50°C to 90°C, preferably at 65 to 85°C, more preferably 80°C. In the present invention, the temperature of the frying container is 180°C-300°C, more preferably 200-260°C. In the present invention, the moisture content of the fried shredded tobacco is 10%-12%, and the snus shredded tobacco is obtained. The present invention has no special limitation on the material of the container for frying, and a conventional container for frying shredded tobacco well known to those skilled in the art can be used.

In the present invention, the frying preferably further includes: stacking and fermenting the fried shredded tobacco to obtain snus shredded tobacco. In the present invention, the stacking fermentation is to intoxicate the prepared shredded tobacco to make the oil content, aroma, color and moisture more consistent, further improve the quality of the tobacco leaves, make the tobacco leaves less prone to mold and rot, and easy to store. In the present invention, the temperature of the stack fermentation is preferably 25-34°C, and the humidity of the stack fermentation is preferably 10-13%. In the present invention, the time for the stacking fermentation is 10-15 days, more preferably 12 days. In the present invention, in the stacking and fermentation process, plastic cloth and cotton cloth are preferably laid above and below the shredded snus tobacco for sealing, and heavy objects such as wooden boards are laminated on the uppermost layer. In the present invention, the cotton linen is preferably a colorless and odorless cloth, the cotton linen is preferably in direct contact with shredded tobacco, and the plastic cloth is preferably laid on the outside of the cotton linen. In the present invention, when the temperature of the stack is higher than 35°C, stack turning is preferably performed.

In the present invention, during the stack-covering fermentation, the distance from the lowest end of the smoke pile to the ground is 30 cm, and the distance from the wall is 10 cm.

In the present invention, there is no special limitation on the determination method of TSNAs content in the shredded tobacco, and the detection method of TSNAs well-known to those skilled in the art can be used, such as liquid chromatography-mass spectrometry method and the like.

A method for preparing snus shredded tobacco provided by the present invention will be further described in detail below in conjunction with specific examples. The technical solutions of the present invention include but are not limited to the following examples.

Example 1

1) Under the condition of fine weather, collect the sun-cured red tobacco leaves that have fallen yellow and mature, and pile them up in a cool place for 24 hours; 2) Remove the main veins of the leaves, and cut the tobacco leaves into shreds, with a width of 1mm; 3) Sun-dried in the sun for 5 4) Frying: Put the shredded tobacco in an iron pan and fry it on a slow fire; turn the shredded tobacco while heating, and keep the temperature of the iron pan 260°C, keep the cut tobacco temperature at 80°C, and fry until the moisture content is 12%; carry out stacking and fermentation: the tobacco stack should be 30 cm away from the ground and 10 cm away from the wall. Lay plastic sheeting on the stack, and lay a layer of colorless and odorless cotton cloth on it, then cover the prepared shredded tobacco, cover it with plastic sheeting, sacks, etc., and press it with wooden boards ;Let the shredded tobacco be fermented under the environmental conditions of 30°C and humidity of 10°C; check frequently during the fermentation period, if the temperature in the stack reaches 35°C, turn the stack, classify and pack after 10°C.

Example 2

1) Under fine weather conditions, collect sun-cured red tobacco leaves that have fallen yellow and mature, and pile them up in a cool place for 24 hours; 2) Remove the main veins of the leaves and shred the tobacco leaves, with a width of 2mm; 3) Sun-dry in the sun for 6 hours, and turn the shredded tobacco until the shredded tobacco wilts and softens until the moisture content of the shredded tobacco is 65%; 4) Knead the shredded tobacco with hands until it does not disperse into a ball; 5) Put the shredded tobacco that has been kneaded in a closed environment Medium, ferment at 45°C for 5 hours; 6) Put the shredded tobacco in an iron pot and fry it on a slow fire; turn the shredded tobacco while heating, the temperature of the iron pot is 200°C, keep the temperature of the shredded tobacco at 80°C, and fry until the moisture content is 10% %; Carry out stacking and fermentation: the stack of cigarettes should be 30 cm above the ground and 10 cm away from the wall; lay plastic cloth on the stack of cigarettes, and lay a layer of colorless and odorless cotton cloth on it, and then cover the prepared shredded tobacco On top, then cover with plastic cloth, sacks, etc. to seal, and then press it on top with wooden boards. Allow shredded tobacco to ferment under the environmental conditions of 30°C and humidity of 10°C; check frequently during the fermentation period, if the temperature in the stack reaches 35°C, turn the stack, grade and pack after 10°C.

Example 3

1) Under the condition of fine weather, collect the sun-cured red tobacco leaves that have fallen yellow and mature, and pile them up in a cool place for 30 hours; 2) Remove the main veins of the leaves, and shred the tobacco leaves with a width of 2mm; 3) Dry in the sun for 4 4) Frying: Put the shredded tobacco in an iron pan and fry it on a slow fire; turn the shredded tobacco while heating, and keep the temperature of the iron pan 300°C, keep the cut tobacco temperature at 90°C, fry until the moisture content is 10%; grade and pack. After testing, the content of TSNAs in shredded tobacco was 0.290mg/kg.

Example 4

1) Under the condition of fine weather, collect the sun-cured red tobacco leaves that have fallen yellow and mature, and pile them up in a cool place for 26 hours; 2) Remove the main veins of the leaves and cut the tobacco leaves into shreds, with a width of 2mm; 3) Sun-dried in the sun for 5 hours, and turn the shredded tobacco until the shredded tobacco wilts and becomes soft, until the moisture content of the shredded tobacco is 50%; 4) Knead the shredded tobacco with hands until it does not disperse into a ball; 5) Put the shredded tobacco that has been kneaded in a closed environment Medium, ferment at 30°C for 7 hours; 6) Put the shredded tobacco in an iron pot and fry it on a slow fire; turn the shredded tobacco while heating, the temperature of the iron pot is 220°C, keep the temperature of the shredded tobacco at 85°C, and fry until the moisture content is 11% ; Grading, packaging. After testing, the content of TSNAs in shredded tobacco was 0.452mg/kg.

Comparative example 1

Test overview

Test location: Wutai Village, Gaozhuang Town, Yishui County, Shandong Province. Test variety: Liuyejian. Test time: August 15, 2016.

Test design

Experimental group 1: Sun-cured red shredded tobacco prepared by the method of Example 1

Experimental group 2: Sun-cured red shredded tobacco prepared by the method of Example 2

Control group: 1) Harvesting: Harvesting in 2 to 3 times according to the characteristics of sun-cured tobacco ripening from top to bottom. 2) Tobacco weaving: Weave two tobacco leaves back to back in the rope buckle in sequence, so that the petiole is about 3 cm exposed from the rope. 3) Yellowing period: Put the finished cigarette ropes together in groups of 15 to 20, and keep the distance between the ropes at about 3 cm. In the early stage of yellowing, cover the tobacco rope with curtains and other coverings to prevent the leaves from being scalded. During the yellowing process, the cigarette rope must be opened 2 to 3 times for ventilation. When the upper leaves turn yellow by 60-70%, the middle leaves turn yellow by 70-80%, and the lower leaves turn yellow by 40-50%, gradually distance the tobacco ropes to dry. 4) Reddening period: On the basis of the tobacco leaves turning yellow, they gradually turn red, and gradually expand the rope distance to dry according to the degree of reddening of the tobacco leaves. Always check the frame and gently push and shake frequently to avoid blade adhesion. 5) Tendon drying period: In the early stage, the rope pitch is increased to expose to the sun, and in the later stage, the rope pitch is reduced to increase the utilization rate of the drying rack, until the main vein of the tobacco leaf breaks immediately. 6) Eat dew at night: let the tobacco leaves eat dew properly. When the leaves turn red, the mesophyll is basically dried in the sun, and begins to have the ability to absorb dew and return to moisture, choose a sunny day and night to draw away the distance from the tobacco rope to absorb dew, and continue to dry the next day, and repeat this for 2 to 3 times. 7) Stacking off the shelf: After the tobacco leaves are dried, they are placed in the room for stacking and fermentation. The stack of cigarettes should be 30 centimeters from the ground and 10 centimeters from the wall. When stacking, make sure that the tip of the leaf is inside and the petiole is facing outward, and the height of the stack is 1.5 meters, and then cover it with plastic, sacks, etc. to seal it. Check frequently during the fermentation period. If the temperature in the pile reaches the temperature of the human body, turn the pile over and classify and pack after 15 days.

The comparison of the TSNA content of shredded tobacco by the preparation method of the present invention and the traditional preparation method (control group)

The detection data are shown in Table 1. It can be seen that the TSNA content of shredded tobacco produced by the preparation method of the present invention is far lower than that of the traditional preparation method.

Table 1 TSNA content of shredded tobacco with different preparation methods (mg/kg)

Note: N.D.: Not detected.

Preparation time comparison

The preparation time of the preparation method of the present invention (excluding the stacking fermentation period) is short, about 5 days; it is not affected by cloudy and rainy weather, and the risk of planting sun-dried red tobacco is small. However, the traditional preparation method is greatly affected by rainfall and cloudy days, and the risk of planting red sun-dried tobacco is high; when there is no rainy weather, the preparation cycle generally takes 20 days.

Preparation Labor Comparison

The preparation method of the present invention requires less labor (not counting the stacking and fermentation period), about 5 labors per mu; while the yellowing stage of the traditional preparation method encounters rainfall or cloudy days, it is necessary to carry the tobacco leaves or use a plastic film to cover the rain, and the labor increases. 1 to 4 workers/mu, and about 6 to 9 workers/mu for modulation. Calculated on the basis of 100 yuan per worker, the new modulation method can save 100-400 yuan/mu in cost.

The above is only a preferred embodiment of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the present invention. It should be regarded as the protection scope of the present invention.

Claims (9)

1. a kind of preparation method of buccal cigarette tobacco shred, comprises the following steps：

1) by Dark sun-cured Nicotiana tabacum L. stacking at least 24 hours in the cool；

2) blade master pulse is removed, Nicotiana tabacum L. is cut into into tobacco shred；

3) tobacco shred is placed under daylight wilt to tobacco shred water content be 50%~70%；

4) parch is carried out to the tobacco shred after the wilting, the temperature of tobacco shred is maintained at 50 DEG C~90 DEG C during the parch, is fried It is 10%~12% to make to moisture in cut tobacco content, obtains buccal cigarette tobacco shred.

2. preparation method according to claim 1, it is characterised in that the step 2) width of tobacco shred is 1~2mm.

3. preparation method according to claim 1, it is characterised in that the step 3) time for wilting is 4~7h.

4. preparation method according to claim 1, it is characterised in that the step 3) wilting after also include：Will be described Tobacco shred after wilting kneads after fermentation.

5. preparation method according to claim 4, it is characterised in that the condition of the fermentation is：Send out at 30 DEG C~50 DEG C Ferment 3~8 hours.

6. preparation method according to claim 1, it is characterised in that the step 4) for the temperature of the container of parch be 180 DEG C~300 DEG C.

7. preparation method according to claim 1, it is characterised in that the step 4) also include after parch：By the stir-fry Tobacco shred stacking fermentation after system, obtains buccal cigarette tobacco shred；The temperature of the stacking fermentation is 25~34 DEG C, the humidity of stacking fermentation For 10~13%.

8. preparation method according to claim 7, it is characterised in that in the stacking fermentation, the least significant end of cigarette heap is liftoff The distance in face is 30cm, is 10cm with a distance from wall.

9. the preparation method according to claim 7 or 8, it is characterised in that the time of the stacking fermentation is 10~15d.