CN115381125A - Baking method for improving quality of NC102 tobacco leaves - Google Patents
Baking method for improving quality of NC102 tobacco leaves Download PDFInfo
- Publication number
- CN115381125A CN115381125A CN202111407580.2A CN202111407580A CN115381125A CN 115381125 A CN115381125 A CN 115381125A CN 202111407580 A CN202111407580 A CN 202111407580A CN 115381125 A CN115381125 A CN 115381125A
- Authority
- CN
- China
- Prior art keywords
- baking
- temperature
- tobacco
- dry
- stage
- 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.)
- Pending
Links
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
- A24B3/00—Preparing tobacco in the factory
- A24B3/10—Roasting or cooling tobacco
Abstract
The invention discloses a baking method for improving the quality of NC102 tobacco leaves, which comprises the steps of weaving fresh NC102 tobacco leaves into rods, loading the rods into a baking house for baking according to the form of dense top and sparse bottom and staggered cross, and sequentially carrying out yellowing stage baking, color fixing stage baking and stem drying stage baking on the tobacco leaves loaded into the baking house; and correspondingly adjusting the dry bulb temperature, the wet bulb temperature, the heating speed, the temperature stabilizing time, the cold air door state and the circulating fan state of the yellowing stage baking, the color fixing stage baking and the dry rib stage baking according to the number of tobacco filling tables, and coordinating the yellowing degree and the water loss degree of the tobacco leaves in the adjusting process until the NC102 baked tobacco leaves are obtained after the baking is finished. Aiming at the characteristics of cured tobacco NC102 tobacco leaves, the invention coordinates the yellowing degree and the water loss degree of the tobacco leaves in each stage by comprehensively planning the dry bulb temperature, the wet bulb temperature, the temperature rise speed, the temperature stabilization time, the cold air door state and the circulating fan state of the tobacco leaves in the yellowing stage, the color fixing stage and the dry stem stage, thereby effectively improving the baking quality of the NC 102.
Description
Technical Field
The invention relates to the technical field of tobacco curing, in particular to a curing method for improving the quality of NC102 tobacco leaves.
Background
Flue-cured tobacco variety NC102 is a F1 hybrid registered by f.w.rickard seed company, usa, and recommended by north american officials in 2004. In 2006, tobacco industry company in Yunnan introduced test seeds from America, which has better fertilizer resistance, high resistance to black shank, anti-virus disease, low resistance to bacterial wilt, better aroma quality, sweet aftertaste, lighter miscellaneous gas and moderate strength. Therefore, the variety is suitable for being used as a high-grade high-end cigarette raw material. The variety is used as a newly introduced variety, the baking technical guidance and method of the variety are lacked at present, and if the variety is baked according to the conventional baking method, the problems of variegated colors, ash-coated tobacco, high proportion of green muscle and yellow piece and the like still exist.
The difficulty in baking the NC102 is that the baking moisture control of the NC102 varieties is difficult, the tobacco leaves are possibly baked to be yellow in the yellowing period, but the water loss degree of the tobacco leaves is not achieved, and the tobacco leaves are grayed if the NC102 varieties directly enter the color fixing period; if the tobacco leaves are subjected to hard yellowing or excessive yellowing in order to achieve the water loss degree, the tobacco leaves are also easy to be subjected to ash hanging in the color fixing stage. At present, in the process of baking the NC102, the accurate control of the temperature, the humidity, the baking time and the like in each period is lacked, particularly, the coordination of the yellowing degree and the water loss degree in the yellowing period has problems, particularly, the control of the temperature, the humidity and the baking time in the color fixing period and the tendon drying period is unreasonable, and the NC102 is easily baked into ash-hanging smoke. Due to the lack of a baking process matched with the variety, the popularization difficulty of the variety is increased, so that the enthusiasm of tobacco growers for planting and baking the variety is low, the quality deviation of the variety after baking is caused, such as the characteristics of less fresh and sweet note, scorched aroma, weaker aroma, lower concentration, fine and smooth quality, slightly scorched and bitter taste and the like after baking are not given out, the excellent smoking characteristics of obvious fresh and sweet note, good baking aroma, fruity note, sufficient quantity, higher concentration, fine and soft cotton quality, clean oral cavity and the like are not given out, and the rating effect and the industrial usability of the variety cannot be expected.
In view of the above, there is a need to develop a curing method for improving the quality of NC102 tobacco leaves to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a baking method for improving the quality of NC102 tobacco leaves, which aims to remarkably improve the baking quality of the NC102 tobacco leaves in intensive baking and provide technical guidance for baking of the tobacco leaves, thereby improving the quality and industrial availability of the cured NC102 tobacco leaves.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a baking method for improving the quality of NC102 tobacco leaves, which is characterized in that collected fresh NC102 tobacco leaves are woven into rods, the tobacco rods are arranged into a baking room to be baked according to the form of top-dense, bottom-sparse and staggered intersection, and the tobacco leaves arranged into the baking room are sequentially baked in a yellowing stage, a color fixing stage and a stem drying stage; and correspondingly adjusting the dry bulb temperature, the wet bulb temperature, the heating speed, the temperature stabilizing time, the cold air door state and the circulating fan state of the yellowing stage baking, the color fixing stage baking and the dry rib stage baking according to the number of tobacco filling tables, and coordinating the yellowing degree and the water loss degree of the tobacco leaves in the adjusting process until the NC102 baked tobacco leaves are obtained after the baking is finished.
Preferably, the curing barn is preferably a three-layer curing barn or a four-layer curing barn; the three-layer curing barn is sequentially provided with three curing chambers from bottom to top, namely a first curing chamber, a second curing chamber and a third curing chamber; four baking rooms are sequentially provided with four baking rooms from bottom to top, namely a first baking room, a second baking room, a third baking room and a fourth baking room.
Preferably, the yellowing stage bake comprises a pre-yellowing stage bake, a mid-yellowing stage bake and a post-yellowing stage bake, wherein:
the early stage yellowing baking comprises the following steps: at the heating rate of 1 ℃/1 hour, the temperature of the dry balls is increased from room temperature to 30-33 ℃, and the temperature of the wet balls is adjusted from room temperature to 30 ℃; after the temperature of the dry and wet balls is stable, continuously baking for 1-3 h, and simultaneously closing a cold air door and operating a low-grade circulating fan;
the middle yellowing stage baking comprises the following steps: after the yellowing early-stage baking is finished, the dry bulb temperature is increased to 35 ℃ at the heating rate of 1 ℃/2 hours, the wet bulb temperature is adjusted to 34 ℃, and the baking is continued for 6 to 8 hours after the dry bulb temperature and the wet bulb temperature are stable until the leaf tip of the fourth tobacco leaf in the four-layer baking room is yellow by 5 to 8cm or until the leaf tip of the third tobacco leaf in the three-layer baking room is yellow by 5 to 8cm; after the leaf tips of the tobacco leaves turn yellow by 5-8 cm, opening a cold air door by one finger, and simultaneously operating a low-grade circulating fan; then, at the heating rate of 1 ℃/2 hours, the dry bulb temperature is increased to 38-39 ℃, the wet bulb temperature is adjusted to 34 ℃, and the baking is continued for 20-30 hours after the dry bulb temperature and the wet bulb temperature are stable until the third tobacco leaf in the four-layer baking room is yellow 7-8 or the second tobacco leaf in the three-layer baking room is yellow 9; after the middle-stage yellowing baking is finished, opening a cold air door by 2-3 fingers, and simultaneously operating a low-grade circulating fan;
the baking at the later yellowing stage comprises the following steps: after the middle yellowing stage baking is finished, the dry bulb temperature is increased to 40 ℃ at the heating rate of 1 ℃/3 hours, and the wet bulb temperature is adjusted to 34 ℃; after the dry and wet ball temperatures are stable, continuously baking for 6-10 h until the tip-hooking and edge-curling of the second tobacco leaf in the four-layer curing barn or the tip-hooking and edge-curling of the second tobacco leaf in the three-layer curing barn; after the tobacco leaves are hooked and curled, opening a cold air door by 3 fingers, and simultaneously operating a high-grade circulating fan; then, at the heating rate of 1 ℃/3 hours, the temperature of the dry pellets is increased to 42 ℃, the temperature of the wet pellets is adjusted to 34 ℃, and the baking is continued for 18 to 22 hours after the temperature of the dry pellets and the temperature of the wet pellets are stable until the second tobacco leaf small reel in the four-layer baking room or the second tobacco leaf small reel in the three-layer baking room; after the tobacco leaves appear in small reels, opening a cold air door by 3-4 fingers, and simultaneously operating a high-grade circulating fan; then, the temperature of the dry bulb is increased to 44-45 ℃ at the temperature rising rate of 1 ℃/2-3 hours, and the temperature of the wet bulb is adjusted to 34 ℃; after the dry and wet ball temperatures are stable, continuously baking for 10-18 h until the third tobacco leaf small reel in the four-layer baking room or the second tobacco leaf large reel in the three-layer baking room; meanwhile, the cold air door is opened by 3-5 fingers, and a high-grade circulating fan is operated.
Preferably, the fixation period baking comprises: the first-stage baking for fixing color, the middle-stage baking for fixing color and the later-stage baking for fixing color;
the color fixing early-stage baking comprises the following steps: after the yellowing later stage is finished, the temperature of the dry balls is increased to 48 ℃ at the heating rate of 1 ℃/1 hour, the temperature of the wet balls is adjusted to 34.5 ℃, and the tobacco is continuously baked for 18 to 22 hours after the temperature of the dry balls and the temperature of the wet balls are stable until a first tobacco leaf small reel in a four-layer baking room or a first tobacco leaf small reel in a three-layer baking room; meanwhile, the cold air door is opened by 3 fingers, and a high-grade circulating fan is operated;
the fixation middle-term baking comprises the following steps: after the color fixing early-stage baking is finished, the temperature of the dry balls is increased to 54 ℃ at the heating rate of 1 ℃/1 hour, the temperature of the wet balls is adjusted to 35 ℃, and the baking is continued for 10-12 hours after the temperature of the dry balls and the temperature of the wet balls are stable until a four-layer baking room or a three-layer baking room full-furnace large winding drum is obtained; meanwhile, opening a cold air door by 3-4 fingers, and operating a high-grade circulating fan;
the post-fixing baking comprises the following steps: after the fixation medium-term baking is finished, the temperature of the dry bulb is raised to 62 ℃ at the heating rate of 1 ℃/1 hour, the temperature of the wet bulb is adjusted to 37 ℃, and the tobacco leaves are continuously baked for 8 to 10 hours after the dry bulb and the wet bulb are stabilized until the main veins of all the tobacco leaves in the four-layer baking room or the three-layer baking room are dried by more than one third; meanwhile, the cold air door is opened by 3-4 fingers, and a high-grade circulating fan is operated.
Preferably, the baking in the dry gluten period is as follows: after the fixing period is finished, the dry bulb temperature is increased to 65-68 ℃ at the heating rate of 1 ℃/1 hour, the wet bulb temperature is adjusted to 38 ℃, and after the dry bulb temperature and the wet bulb temperature are stable, the tobacco leaves are baked until the main veins of the whole-furnace tobacco leaves in the four-layer baking room or the three-layer baking room are all baked; meanwhile, the cold air door is opened by 3-4 fingers, and a low-grade circulating fan is operated.
Preferably, the staggered crossing form is preferably that 1-2 tobacco rods are gradually reduced from top to bottom in the tobacco leaves in the curing barn to form staggered crossing.
Preferably, the three-layer curing barn or the four-layer curing barn are all airflow descending type bulk curing barns.
Preferably, the tobacco loading density of the third curing barn and the fourth curing barn of the third and fourth curing barns are both 41-42 kg/m 3 The tobacco density of the first of the three-layer curing barn and the first of the four-layer curing barn are both 37-38 kg/m 3 。
Preferably, the fresh NC102 tobacco leaves are ripe fresh tobacco leaves with whitened tobacco ribs, yellowish leaf surfaces and most of fuzz falling off.
Preferably, the low range circulating fan speed r =960 revolutions per minute; and r =1440 rpm of the high-grade circulating fan.
In summary, compared with the prior art, the invention has the beneficial effects that:
1. aiming at the characteristics of cured tobacco NC102 tobacco leaves, the invention coordinates the yellowing degree and the water loss degree of the tobacco leaves in each stage by comprehensively planning the dry bulb temperature, the wet bulb temperature, the temperature rise speed, the temperature stabilization time, the cold air door state and the circulating fan state of the tobacco leaves in the yellowing stage, the color fixing stage and the dry stem stage, thereby effectively improving the baking quality of the NC 102.
2. According to the invention, the change condition of the tobacco leaves in the curing barn is observed in a layered manner, and segmented moisture discharge and the speed control of the circulating fan are carried out according to the change condition of the tobacco leaves, so that the tobacco leaves in the yellowing stage are coordinated with water loss, and the phenomenon of ash hanging of the tobacco leaves which enter the curing barn is avoided; meanwhile, the baking quality of the NC102 can be effectively improved by matching with the proper baking time and temperature in the fixation period and the tendon drying period.
3. According to the invention, the tobacco rods are arranged in the curing barn for curing in a mode of overlapping the upper dense and the lower sparse and staggered, and the tobacco leaf is convenient to observe in the curing process and is convenient to dehydrate, dry or dehumidify through the special tobacco leaf loading density, so that the curing quality of the NC102 is effectively improved.
4. The invention effectively solves the technical problem that the tobacco leaves in the fixed color period are easy to generate ash hanging phenomenon because the tobacco leaves are hard to turn yellow or excessively yellow in the tobacco leaf baking process.
5. According to the invention, the baking quality of the NC102 variety is obviously improved in the airflow descending type intensive baking, so that the baking quality of the newly introduced variety NC102 is improved, technical guidance is provided for baking of the variety NC102, and the quality and the industrial availability of the baked NC102 are further improved.
6. The invention provides a matched modulation process for baking the NC102 tobacco leaves, is beneficial to the popularization of the variety, not only fundamentally solves the technical problem that a tobacco grower is unwilling to plant and bake the variety, but also is beneficial to providing more raw materials for the tobacco industry, and is convenient to improve the formula and manufacture high-end cigarettes.
Detailed Description
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention provides a baking method for improving the quality of NC102 tobacco leaves, which comprises the steps of weaving rods of fresh collected NC102 tobacco leaves, putting the tobacco rods into a baking room for baking according to a mode of dense top and sparse bottom and staggered intersection, and sequentially baking the tobacco leaves put into the baking room in a yellowing stage, a color fixing stage and a stem drying stage; and correspondingly adjusting the dry bulb temperature, the wet bulb temperature, the heating speed, the temperature stabilizing time, the cold air door state and the circulating fan state of the yellowing stage baking, the color fixing stage baking and the dry rib stage baking according to the number of the tobacco containing tables, and coordinating the yellowing degree and the water loss degree of the tobacco leaves in the adjusting process until the NC102 baked tobacco leaves are obtained after the baking is finished.
The curing barn provided by the embodiment is preferably a three-layer curing barn or a four-layer curing barn; the three-layer curing barn is sequentially provided with three curing chambers from bottom to top, namely a first curing chamber, a second curing chamber and a third curing chamber; four baking rooms are sequentially provided with four baking rooms from bottom to top, namely a first baking room, a second baking room, a third baking room and a fourth baking room.
The yellowing stage baking provided by the present embodiment includes yellowing earlier stage baking, yellowing middle stage baking and yellowing later stage baking, wherein:
specifically, the early stage of yellowing is baking: at the heating rate of 1 ℃/1 hour, the temperature of the dry balls is increased from room temperature to 30-33 ℃, and the temperature of the wet balls is adjusted from room temperature to 30 ℃; after the temperature of the dry and wet balls is stable, continuously baking for 1-3 h, and simultaneously closing a cold air door and operating a low-grade circulating fan; after the cold air door is opened, the moisture can be discharged, and the circulating fan provides hot air for the curing barn.
Specifically, the mid-yellowing baking comprises the following steps: after the yellowing early-stage baking is finished, the dry bulb temperature is increased to 35 ℃ at the heating rate of 1 ℃/2 hours, the wet bulb temperature is adjusted to 34 ℃, and the baking is continued for 6-8 hours after the dry bulb temperature and the wet bulb temperature are stable until the leaf tip of the fourth tobacco leaf in the four-layer baking room is yellow by 5-8 cm or until the leaf tip of the third tobacco leaf in the three-layer baking room is yellow by 5-8 cm; after the leaf tips of the tobacco leaves turn yellow by 5-8 cm, opening a cold air door by one finger, and simultaneously operating a low-grade circulating fan; then, at the heating rate of 1 ℃/2 hours, the dry bulb temperature is increased to 38-39 ℃, the wet bulb temperature is adjusted to 34 ℃, and the baking is continued for 20-30 hours after the dry bulb temperature and the wet bulb temperature are stable until the third tobacco leaf in the four-layer baking room is yellow 7-8 or the second tobacco leaf in the three-layer baking room is yellow 9; after the middle-stage yellowing baking is finished, opening a cold air door by 2-3 fingers, and simultaneously operating a low-grade circulating fan.
When the baking time is 12-20 h, if the hard yellowing (yellowing speed is high, water loss speed is slow, generally the color is not enough, and the water loss state is required to be in place) is caused, and when the humidity is high, the high-speed circulating fan and the low-speed circulating fan are alternately used. After the temperature of the dry pellets is raised to 38 ℃, the third tobacco leaf in the four-layer curing barn or the second tobacco leaf in the three-layer curing barn loses water, a high-speed fan and a low-speed fan can be used alternately, and a high-speed gear is used at 40 ℃; in addition, the change of the color of the tobacco leaves is not emphasized too much in the step, water is taken as the main part, color is taken as the auxiliary part, and when the dry balls show 38 ℃, the moisture removal is strengthened. The water loss state of NC102 tobacco leaves is slower than that of the cloud type tobacco leaves, so that the moisture is discharged in stages (the moisture cannot be discharged after the whole furnace is yellowed, otherwise, the moisture is not discharged in time), the top platform and the second tobacco leaves are yellowed and lose water at 38 ℃, the third platform and the bottom platform tobacco leaves are yellowed and lose water at 42 ℃, and otherwise, the tobacco leaves entering the color fixing stage are bound to be grey. In the middle yellowing stage, the wet bulb temperature cannot exceed 34 ℃, otherwise, the tobacco leaves entering the color fixing stage are also bound to be grey. By the method, the whole tobacco leaf yellowing stage avoids the tobacco leaf from becoming hard yellow or excessively yellow, thereby avoiding the phenomenon of ash hanging of the tobacco leaf.
Specifically, the post yellowing baking comprises: after the middle-stage yellowing baking is finished, the dry bulb temperature is increased to 40 ℃ at the heating rate of 1 ℃/3 hours, and the wet bulb temperature is adjusted to 34 ℃; after the dry and wet ball temperatures are stable, continuously baking for 6-10 h until the tip-hooking and edge-curling of the second tobacco leaf in the four-layer curing barn or the tip-hooking and edge-curling of the second tobacco leaf in the three-layer curing barn; after the tip of the tobacco leaves is hooked and the edges are curled, opening a cold air door by 3 fingers, and simultaneously operating a high-grade circulating fan; then, at the heating rate of 1 ℃/3 hours, the dry-bulb temperature is increased to 42 ℃, the wet-bulb temperature is adjusted to 34 ℃, and the baking is continued for 18-22 hours after the dry-bulb temperature and the wet-bulb temperature are stable until a second tobacco leaf small winding drum in the four-layer baking room or a second tobacco leaf small winding drum in the three-layer baking room; after the tobacco leaves appear in the small reel, opening a cold air door by 3-4 fingers, and simultaneously operating a high-grade circulating fan; then, at the heating rate of 1 ℃/2-3 hours, the dry bulb temperature is increased to 44-45 ℃, and the wet bulb temperature is adjusted to 34 ℃; after the dry and wet ball temperatures are stable, continuously baking for 10-18 h until a third tobacco leaf small reel in the four-layer baking room or a second tobacco leaf large reel in the three-layer baking room; meanwhile, the cold air door is opened by 3-5 fingers, and a high-grade circulating fan is operated.
The fixed-color-period baking provided by the embodiment comprises the following steps: the first-stage baking for fixing color, the middle-stage baking for fixing color and the later-stage baking for fixing color;
specifically, the color fixing early stage baking comprises the following steps: after the yellowing later stage is finished, the temperature of the dry balls is increased to 48 ℃ at the heating rate of 1 ℃/1 hour, the temperature of the wet balls is adjusted to 34.5 ℃, and the tobacco is continuously baked for 18 to 22 hours after the temperature of the dry balls and the temperature of the wet balls are stable until a first tobacco leaf small reel in a four-layer baking room or a first tobacco leaf small reel in a three-layer baking room; meanwhile, the cold air door is opened by 3 fingers, and a high-grade circulating fan is operated;
specifically, the fixation medium-term baking comprises the following steps: after the pre-baking of the fixation, the temperature of the dry balls is raised to 54 ℃ at the heating rate of 1 ℃/1 hour, the temperature of the wet balls is adjusted to 35 ℃, and the baking is continued for 10 to 12 hours after the temperature of the dry balls and the temperature of the wet balls are stable until the four-layer baking room or the three-layer baking room is a full-furnace large winding drum; meanwhile, opening a cold air door by 3-4 fingers, and operating a high-grade circulating fan;
specifically, the post-fixing baking comprises the following steps: after the fixation medium-term baking is finished, the temperature of the dry bulb is raised to 62 ℃ at the heating rate of 1 ℃/1 hour, the temperature of the wet bulb is adjusted to 37 ℃, and the tobacco leaves are continuously baked for 8 to 10 hours after the dry bulb and the wet bulb are stabilized until the main veins of all the tobacco leaves in the four-layer baking room or the three-layer baking room are dried by more than one third; meanwhile, the cold air door is opened by 3-4 fingers, and a high-grade circulating fan is operated.
The baking in the gluten drying period provided by the specific embodiment is as follows: after the fixation period is finished, the dry bulb temperature is increased to 65-68 ℃ at the heating rate of 1 ℃/1 hour, the wet bulb temperature is adjusted to 38 ℃, and after the dry bulb temperature and the wet bulb temperature are stable, the tobacco leaves are baked until the main veins of the whole-furnace tobacco leaves in the four-layer baking room or the three-layer baking room are all baked; meanwhile, the cold air door is opened by 3-4 fingers, and a low-grade circulating fan is operated.
The preferred staggered crossing form provided by the embodiment is that 1-2 tobacco rods are gradually reduced from top to bottom in the tobacco leaf in the curing barn, and the staggered crossing is formed.
The three-layer curing barn or the four-layer curing barn provided by the embodiment is a downward airflow type bulk curing barn.
The third flue-curing barn and the fourth flue-curing barn in the three layers and the four layers provided by the embodiment have the tobacco loading density of 41-42 kg/m 3 The tobacco density of the first of the three-layer curing barn and the first of the four-layer curing barn are both 37-38 kg/m 3 。
The fresh NC102 tobacco leaves provided by the specific embodiment are ripe fresh tobacco leaves with whitened tobacco ribs, faint yellow leaf surfaces and most of fuzz falling off.
The low-gear circulating fan provided by the specific embodiment has the rotating speed r =960 revolutions per minute; and r =1440 rpm of the high-grade circulating fan.
The invention is further illustrated by the following specific examples, which are intended to be illustrative of the invention and are not to be construed as limiting the scope thereof.
Example 1
S100: and (3) collecting NC102 ripe fresh tobacco leaves planted in XXX town of Shanzhou, shanbei county aiming at the experiment according to the requirements that tobacco ribs become white, leaf surfaces are light yellow and most of antler hairs fall off.
S200: the harvested fresh tobacco leaves are woven into rods and packaged according to the tobacco packaging standard with dense top and sparse bottom, and the third tobacco leaf of the three-layer curing barn or the fourth tobacco leaf of the four-layer curing barn is 42kg/m 3 The tobacco density of the tobacco is loaded into an air-flow descending type bulk curing barn, and the first tobacco leaf of the first curing barn of the three layers or the first tobacco leaf of the fourth curing barn is 38kg/m 3 The tobacco is filled into an airflow descending type bulk curing barn to the volume of more than 95 percent and is ready to be baked.
S300: the yellowing period comprises a yellowing early stage, a yellowing middle stage and a yellowing later stage, the temperature of dry balls is controlled within a range of 30 ℃ from room temperature in the yellowing early stage at a heating rate of 1 ℃/h, the temperature of wet balls is adjusted to 30 ℃ from room temperature, the dry and wet ball temperatures are stably baked for 1h, a cold air door is closed, and a circulating fan is operated at a low speed; and then, in the middle yellowing stage, the dry pellets are heated to 35 ℃ at the heating rate of 1 ℃/2h, the temperature of the wet pellets is adjusted to 34 ℃, the temperature is adjusted for 6h until the leaf tips of the fourth tobacco leaves in the four-layer curing barn become yellow by 5-8 cm or until the leaf tips of the third tobacco leaves in the three-layer curing barn become yellow by 5-8 cm, a cold air door is opened by one finger after the leaf tips of the tobacco leaves become yellow by 5-8 cm, and the circulating fan is operated at a low speed. Then, at the heating rate of 1 ℃/2 hours, the dry balls are heated to 38 ℃, the wet ball temperature is adjusted to 34 ℃, the dry and wet ball temperature is stabilized for baking for 20-30 hours, the third tobacco leaf becomes yellow 7-8 (4-layer baking room), the second tobacco leaf becomes yellow 9 (3-layer baking room), the cold air door is opened by 2-3 fingers, and the circulating fan is operated at low speed; and then, in the later yellowing stage, the temperature of the dry pellets is increased to 40 ℃ at the heating rate of 1 ℃/3 hours, the temperature of the wet pellets is adjusted to 34 ℃, the dry and wet pellet temperature is stabilized and baked for 6-10 hours until the tip hooking and curling of the second tobacco leaf (4-layer curing barn) and the tip hooking and curling of the second tobacco leaf (3-layer curing barn) occur, the cold air door is opened by 3 fingers, and the circulating fan is operated at high speed. And then, at the heating rate of 1 ℃/3 hours, the temperature of the dry pellets is increased to 42 ℃, the temperature of the wet pellets is adjusted to 34 ℃, the dry and wet pellet temperature is stabilized and baked for 18 hours until a second tobacco leaf small reel (4-layer baking room) and a second tobacco leaf small reel (3-layer baking room) with slight appearance are formed, a cold air door is opened by 3-4 fingers, and the circulating fan is operated at a high speed. And then, at the heating rate of 1 ℃/2-3 hours, the temperature of the dry pellets is increased to 44-45 ℃, the temperature of the wet pellets is adjusted to 34 ℃, the dry and wet pellet temperature is stabilized and baked for 10 hours until a second tobacco leaf small reel (4 baking rooms) and a second tobacco leaf small reel (3 baking rooms) with slight appearance are formed, a cold air door is opened by 3-5 fingers, and the circulating fan is operated at a high speed.
S400: the method comprises a color fixing early stage, a color fixing middle stage and a color fixing later stage, wherein the color fixing early stage is to heat a dry bulb to 48 ℃ at a heating rate of 1 ℃/h after the yellowing later stage is finished, adjust a wet bulb to 34.5 ℃, and stably bake the dry bulb and the wet bulb for 18h until a first tobacco leaf small reel in a four-layer baking room or a first tobacco leaf small reel in a three-layer baking room; the cold air door is opened by 3 fingers, and the circulating fan runs at high speed; then entering a color fixing middle period, raising the temperature of dry balls to 54 ℃ at a heating rate of 1 ℃/h, adjusting the temperature of wet balls to 35 ℃, stabilizing the temperature of the dry balls and the wet balls, baking for 10h to a four-layer baking room or a three-layer baking room full-furnace large winding drum, opening a cold air door by 3-4 fingers, and operating a circulating fan at a high speed; and then, in the later stage of color fixing, the temperature of the dry balls is raised to 62 ℃ at the heating rate of 1 ℃/h, the temperature of the wet balls is adjusted to 37 ℃, the dry and wet ball temperatures are stabilized and baked for 8h until the main pulse of the tobacco leaves is more than one third, a cold air door is opened by 3-4 fingers, and the circulating fan is operated at a high speed.
S500: the tendon drying period is that after the color fixing period is finished, the temperature of a dry bulb is increased to 65-68 ℃ at the heating rate of 1 ℃/h, the temperature of a wet bulb is adjusted to 38 ℃, the dry bulb temperature and the wet bulb temperature are stabilized and baked until all main veins of the whole furnace are baked, and then the dried tendon is taken out of a baking room after being cooled.
Example 2
S100: according to the requirements that tobacco ribs become white, leaf surfaces are light yellow, and most of antler hair falls off, NC102 ripe fresh tobacco leaves planted in XXX town of Qiubei county of Shanghai aiming at the experiment are harvested.
S200: the harvested fresh tobacco leaves are woven into rods and packaged according to the tobacco packaging standard with dense top and sparse bottom, and the third tobacco leaf of the three-layer curing barn or the fourth tobacco leaf of the four-layer curing barn is 41kg/m 3 The tobacco density of the tobacco is loaded into an air-flow descending type bulk curing barn, and the first tobacco leaf of the first curing barn of the three layers or the first tobacco leaf of the first curing barn of the four layers is 37kg/m 3 The tobacco is filled into an airflow descending type bulk curing barn to the volume of more than 95 percent and is ready to be baked.
S300: the yellowing period comprises a yellowing early stage, a yellowing middle stage and a yellowing later stage, the temperature of dry balls is controlled within a range of 31 ℃ from room temperature at a heating rate of 1.5 ℃/h in the yellowing early stage, the temperature of wet balls is adjusted to 30 ℃ from room temperature, the dry and wet ball temperatures are stabilized and baked for 2h, a cold air door is closed, and a circulating fan is operated at a low speed; then, in the middle yellowing stage, the dry pellets are heated to 35 ℃ at the heating rate of 1 ℃/2h, the temperature of the wet pellets is adjusted to 34 ℃, and the tips of the fourth tobacco leaves in the four-layer curing barn become yellow by 5-8 cm or the tips of the third tobacco leaves in the three-layer curing barn become yellow by 5-8 cm; after the leaf tips of the tobacco leaves turn yellow by 5-8 cm, a cold air door is opened by one finger, and the circulating fan is operated at a low speed. Then, at the heating rate of 1 ℃/2h, heating the dry balls to 39 ℃, adjusting the temperature of the wet balls to 34 ℃, stabilizing the dry and wet ball temperature for baking for 25h until the third tobacco leaf turns yellow 7-8 (4-layer baking room) and the second tobacco leaf turns yellow 9 (3-layer baking room), opening a cold air door by 2-3 fingers, and operating the circulating fan at a low speed; and then, in the later yellowing stage, the temperature of the dry balls is increased to 42 ℃ at the heating rate of 1 ℃/3h, the temperature of the wet balls is adjusted to 34 ℃, the dry and wet ball temperature is stabilized and baked for 22h until the tip hooking and curling of the second tobacco leaf (4-layer baking room) and the tip hooking and curling of the second tobacco leaf (3-layer baking room) occur, a cold air door is opened by 3 fingers, and the circulating fan is operated at a high speed. And then, raising the temperature of the dry pellets to 42 ℃ at the heating rate of 1 ℃/3h, adjusting the temperature of the wet pellets to 34 ℃, stably baking the dry pellets and the wet pellets for 22h until a second tobacco leaf small reel (4-layer baking room) and a second tobacco leaf small reel (3-layer baking room) with slight appearance appear, opening a cold air door by 3-4 fingers, and operating the circulating fan at a high speed. And then, at the heating rate of 1 ℃/2h, raising the temperature of the dry balls to 45 ℃, adjusting the temperature of the wet balls to 34 ℃, stabilizing the temperature of the dry balls and the wet balls, baking for 15h until a second tobacco leaf small reel (4-layer baking room) and a second tobacco leaf small reel (3-layer baking room) appear slightly, opening a cold air door by 3-5 fingers, and operating the circulating fan at a high speed.
S400: the method comprises a color fixing early stage, a color fixing middle stage and a color fixing later stage, wherein the color fixing early stage is to heat the dry bulb to 48 ℃ at a heating rate of 1 ℃/1h after the yellowing later stage is finished, adjust the wet bulb to 34.5 ℃, stabilize the dry bulb temperature and the wet bulb temperature and bake the dry bulb temperature for 22h until the first tobacco leaf small winding drum in a four-layer curing barn or until the first tobacco leaf small winding drum in a three-layer curing barn, open a cold air door by 3 fingers and operate a circulating fan at a high speed; then entering a color fixing middle period, raising the temperature of the dry bulb to 54 ℃ at a heating rate of 1 ℃/1h, adjusting the temperature of the wet bulb to 35 ℃, stabilizing the temperature of the dry bulb and the temperature of the wet bulb, baking for 12h to a full-furnace large drum, opening a cold air door by 3-4 fingers, and operating a circulating fan at a high speed; and then, in the later stage of color fixing, the temperature of the dry bulb is increased to 62 ℃ at the heating rate of 1 ℃/1h, the temperature of the wet bulb is adjusted to 37 ℃, the dry and wet bulb temperatures are stabilized and baked for 10h until the main vein of the tobacco leaves is more than one third, a cold air door is opened by 3-4 fingers, and the circulating fan is operated at a high speed.
S500: the dry stem drying period is that after the fixation period, the dry bulb temperature is raised to 67 ℃ and the wet bulb temperature is adjusted to 38 ℃ at the heating rate of 1 ℃/1h, the dry and wet bulb temperatures are stabilized and baked for 23h until the main vein of the tobacco leaves in the whole curing barn is dried, and then the tobacco leaves are taken out of the curing barn after being cooled.
Example 3
S100: according to the requirements that tobacco ribs become white, leaf surfaces are light yellow, and most of antler hair falls off, NC102 ripe fresh tobacco leaves planted in XXX town of Qiubei county of Shanghai aiming at the experiment are harvested.
S200: the harvested fresh tobacco leaves are woven into rods and packaged according to the tobacco packaging standard with dense top and sparse bottom, and the third tobacco leaf of the three-layer curing barn or the fourth tobacco leaf of the four-layer curing barn is 42kg/m 3 The tobacco density of the tobacco is loaded into an air-flow descending type bulk curing barn, and the first tobacco leaf of the first curing barn of the three layers or the first tobacco leaf of the fourth curing barn is 38kg/m 3 The tobacco is filled into an airflow descending type bulk curing barn to the volume of more than 95 percent and is ready to be baked.
S300: the yellowing period comprises a yellowing early stage, a yellowing middle stage and a yellowing later stage, the temperature of dry balls is controlled within a range of 33 ℃ from room temperature at a heating rate of 1 ℃/1h in the yellowing early stage, the temperature of wet balls is adjusted to 30 ℃ from room temperature, the dry and wet ball temperatures are stabilized and baked for 3h, a cold air door is closed, and a circulating fan is operated at a low speed; then, in the middle yellowing stage, the dry pellets are heated to 35 ℃ at the heating rate of 1 ℃/2h, and the temperature of the wet pellets is adjusted to 34 ℃ until the tips of the fourth tobacco leaves in the four-layer curing barn or the third tobacco leaves in the three-layer curing barn become yellow by 5-8 cm; after the leaf tips of the tobacco leaves turn yellow by 5-8 cm, a cold air door is opened by one finger, and the circulating fan is operated at a low speed. Then, at the heating rate of 1 ℃/2h, the dry pellets are heated to 38 ℃, the wet pellet temperature is adjusted to 34 ℃, the dry and wet pellet temperature is stabilized for 30h, the third tobacco leaf is turned yellow for 7-8 (4-layer curing barn), the second tobacco leaf is turned yellow for 9 (3-layer curing barn), the cold air door is opened for 2-3 fingers, and the circulating fan is operated at low speed; and then, in the later yellowing stage, the temperature of the dry pellets is increased to 40 ℃ at the heating rate of 1 ℃/3h, the temperature of the wet pellets is adjusted to 34 ℃, the dry and wet pellet temperature is stabilized and baked for 10h until the tip hooking and curling of the second tobacco leaves (4-layer baking room) and the tip hooking and curling of the second tobacco leaves (3-layer baking room) occur, the cold air door is opened by 3 fingers, and the circulating fan is operated at a high speed. And then, raising the temperature of the dry pellets to 42 ℃ at the heating rate of 1 ℃/3h, adjusting the temperature of the wet pellets to 34 ℃, stably baking the dry pellets and the wet pellets for 22h until a second tobacco leaf small reel (4-layer baking room) and a second tobacco leaf small reel (3-layer baking room) with slight appearance appear, opening a cold air door by 3-4 fingers, and operating the circulating fan at a high speed. And then, at the heating rate of 1 ℃/2h, the temperature of the dry pellets is increased to 43 ℃, the temperature of the wet pellets is adjusted to 34 ℃, the dry and wet pellet temperature is stabilized and baked for 18h until a second tobacco leaf small reel (4-layer baking room) and a second tobacco leaf small reel (3-layer baking room) with slight appearance appear, a cold air door is opened by 3-5 fingers, and the circulating fan is operated at a high speed.
S400: the method comprises a color fixing early stage, a color fixing middle stage and a color fixing later stage, wherein the color fixing early stage is to heat a dry bulb to 48 ℃ at a heating rate of 1 ℃/1h after the yellowing later stage is finished, adjust a wet bulb to 34.5 ℃, stabilize the dry bulb temperature and the wet bulb temperature and bake the dry bulb temperature for 22h to reach a first tobacco leaf small winding drum in a four-layer curing barn or reach a first tobacco leaf small winding drum in a three-layer curing barn, and operate a circulating fan at a high speed by opening a cold air door by 3 fingers; then, in the middle stage of color fixing, the temperature of the dry balls is raised to 54 ℃ at the heating rate of 1 ℃/1h, the temperature of the wet balls is adjusted to 35 ℃, the dry and wet ball temperatures are stabilized and baked for 12h to a whole furnace large winding drum, a cold air door is opened by 3-4 fingers, and a circulating fan is operated at a high speed; and then, in the later stage of color fixing, the temperature of the dry bulb is increased to 62 ℃ at the heating rate of 1 ℃/1h, the temperature of the wet bulb is adjusted to 37 ℃, the dry and wet bulb temperatures are stabilized and baked for 10h until the main vein of the tobacco leaves is more than one third, a cold air door is opened by 3-4 fingers, and the circulating fan is operated at a high speed.
S500: and in the stem drying period, after the color fixing period is finished, the dry bulb temperature is increased to 68 ℃ at the heating rate of 1 ℃/h, the wet bulb temperature is adjusted to 38 ℃, the dry and wet bulb temperatures are stabilized and baked for 26h until the main vein of the tobacco leaves in the full curing barn is dried, and then the tobacco leaves are cooled and taken out of the curing barn.
Example 4 this example is an experimental comparative example
Tobacco leaves harvested in the embodiments 1, 2 and 3 are respectively subjected to rod-weaving roasting by using a conventional roasting method, and the obtained flue-cured tobaccos are respectively called a control group 1, a control group 2 and a control group 3.
The specific conventional baking method comprises the following steps:
(1) And yellowing stage
Raising the temperature to 35 ℃ of dry bulb temperature at the rate of 1 ℃ per 2 hours, enabling the leaf tips to be yellow by more than 5 cm when wet bulbs are at 32-33 ℃, stabilizing the temperature by slightly turning on fire if the requirement is not met, raising the dry bulbs to 38-39 ℃ after the leaf tips are yellow, stabilizing the dry bulbs to 35-36 ℃ at the rate of 2 hours and 1 ℃ after the leaf tips are yellow, baking the tobacco leaves to the bottom table to be yellow by about 8 ℃, slightly heating the fire, raising the temperature of the dry bulbs to 41-43 ℃, continuously maintaining the temperature of the wet bulbs at 35-36 ℃, and turning the tobacco leaves to the bottom table to be completely yellow, withering and softening the leaf tips, hooking and rolling the leaf tips, wherein the tobacco leaves of the bottom table are nearly completely yellow, and turning to a fixed color and dry leaf period when the soft leaves collapse frame.
(2) Color fixing and leaf drying period
Generally, the temperature is raised to 1 ℃ every 2 hours, when the dry bulb temperature is raised to 46-47 ℃ and the wet bulb temperature is raised to 37 ℃, the top platform tobacco leaves are promoted to be dried, the temperature is raised to 1 ℃ every hour, the dry bulb temperature is raised to 54-55 ℃, the wet bulb temperature is raised to 37-38 ℃, the temperature and the humidity are maintained, and the dry leaves are drained until the bottom platform leaves are completely dry and are wound into a large reel;
(3) And a muscle drying period:
and (3) finishing the leaf drying stage, discharging most of water of the tobacco leaves, basically drying the mesophyll, raising the temperature slightly quickly at the moment, raising the temperature by 1 ℃ per hour, raising the dry bulb temperature to 68 ℃, stabilizing the wet bulb temperature at 39-40 ℃, and drying the main veins of the tobacco leaves in the whole oven at the stabilized temperature.
Then, the flue-cured tobacco leaves obtained in the example 1, the example 2 and the example 3 and the indexes after the three groups of comparative examples are measured, and the results are shown in tables 1, 2 and 3; wherein: the table 1 is a XXNC102 tobacco leaf aroma substance content grade evaluation table in the hill north county of the state of the wenshan, the table 2 is an NC102 tobacco leaf baking quality table, and the table 3 is an NC102 tobacco leaf sensory grade quality table.
TABLE 1
| Treatment of | Ketones | Alcohols as pesticides | Aldehydes | Acids (acids) | Olefins and process for their preparation | Heterocycles | Esters as pesticides | Is totaled |
| Example 1 | 9.32 | 17.03 | 2.97 | 3.12 | 178.68 | 0.14 | 1.74 | 213 |
| Control group 1 | 8.29 | 16.43 | 1.59 | 2.29 | 165.22 | 0.10 | 1.31 | 195.23 |
| Example 2 | 7.06 | 10.01 | 1.81 | 1.28 | 168.11 | 0.07 | 0.58 | 188.92 |
| Control group 2 | 6.28 | 9.02 | 1.44 | 1.11 | 161.02 | 0.04 | 0.48 | 179.39 |
| Example 3 | 7.08 | 7.50 | 1.40 | 1.08 | 138.78 | 0.14 | 0.76 | 156.74 |
| Control group 3 | 5.47 | 6.72 | 1.19 | 1.00 | 124.77 | 0.07 | 0.62 | 139.84 |
TABLE 2
TABLE 3
As can be seen from table 1, the total fragrance component content value of example 1 is the highest, and the fragrance component content values of the examples of the present invention are all higher than the control group, and particularly, the content of the fragrance components such as ketones, olefins, and esters is significantly higher than the control group.
As can be seen from Table 2, the first-class smoke percentage of example 1 is 10% higher than that of control 1, and the average price of example 1 is 2.7 yuan/kg higher than that of control 1; the upper smoke percentage of the example 2 is 8% higher than that of the control group 2, and the average price of the example 2 is 0.75 yuan/kg higher than that of the control group 2; the superior smoke percentage of example 3 was 7% higher than the superior smoke percentage of control 3, and the average price of example 3 was 1.8 yuan/kg higher than the average price of control 3.
As can be seen from table 3, the sensory panel test quality of example 1 was 8.4 points higher than that of control 1; the sensory evaluation quality of example 2 was 9.4 points higher than that of the control group 2; the sensory panel test quality of example 3 was 9.5 points higher than that of control group 3.
The result shows that the method can effectively improve the quality of the cured tobacco leaves of the NC 102.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A baking method for improving the quality of NC102 tobacco leaves is characterized in that harvested fresh NC102 tobacco leaves are woven into rods, the tobacco rods are placed into a baking room for baking according to the mode of dense top and sparse bottom and staggered cross, and the tobacco leaves placed into the baking room are sequentially subjected to yellowing stage baking, color fixing stage baking and stem drying stage baking; and correspondingly adjusting the dry bulb temperature, the wet bulb temperature, the heating speed, the temperature stabilizing time, the cold air door state and the circulating fan state of the yellowing stage baking, the color fixing stage baking and the dry rib stage baking according to the number of tobacco filling tables, and coordinating the yellowing degree and the water loss degree of the tobacco leaves in the adjusting process until the NC102 baked tobacco leaves are obtained after the baking is finished.
2. The curing method for improving the quality of tobacco leaves of NC102 varieties according to claim 1, wherein the curing barn is preferably a three-layer curing barn or a four-layer curing barn; the three-layer curing barn is sequentially provided with three curing chambers from bottom to top, namely a first curing chamber, a second curing chamber and a third curing chamber; four baking rooms are sequentially provided with four baking rooms from bottom to top, namely a first baking room, a second baking room, a third baking room and a fourth baking room.
3. The curing method for improving the quality of tobacco leaves of an NC102 variety according to claim 2, wherein the yellowing stage curing comprises a pre-yellowing stage curing, a mid-yellowing stage curing and a post-yellowing stage curing, wherein:
the early-stage yellowing baking comprises the following steps: at the heating rate of 1 ℃/1 hour, the temperature of the dry balls is increased from room temperature to 30-33 ℃, and the temperature of the wet balls is adjusted from room temperature to 30 ℃; after the temperature of the dry balls and the wet balls is stable, continuously baking for 1-3 hours, and simultaneously closing a cold air door and operating a low-grade circulating fan;
the middle yellowing stage baking comprises the following steps: after the yellowing early-stage baking is finished, the dry bulb temperature is increased to 35 ℃ at the heating rate of 1 ℃/2 hours, the wet bulb temperature is adjusted to 34 ℃, and the baking is continued for 6 to 8 hours after the dry bulb temperature and the wet bulb temperature are stable until the leaf tip of the fourth tobacco leaf in the four-layer baking room is yellow by 5 to 8cm or until the leaf tip of the third tobacco leaf in the three-layer baking room is yellow by 5 to 8cm; after the leaf tips of the tobacco leaves turn yellow by 5-8 cm, opening a cold air door by one finger, and simultaneously operating a low-grade circulating fan; then, at the heating rate of 1 ℃/2 hours, the temperature of the dry pellets is increased to 38-39 ℃, the temperature of the wet pellets is adjusted to 34 ℃, and the tobacco is continuously baked for 20-30 hours after the temperature of the dry pellets and the temperature of the wet pellets are stable until the third tobacco in the four-layer curing barn becomes yellow 7-8, or the second tobacco in the three-layer curing barn becomes yellow 9; after the middle-stage yellowing baking is finished, opening a cold air door by 2-3 fingers, and simultaneously operating a low-grade circulating fan;
the baking at the later yellowing stage comprises the following steps: after the middle yellowing stage baking is finished, the dry bulb temperature is increased to 40 ℃ at the heating rate of 1 ℃/3 hours, and the wet bulb temperature is adjusted to 34 ℃; after the dry and wet ball temperatures are stable, continuously baking for 6-10 h until the tip-hooking and edge-curling of the second tobacco leaf in the four-layer curing barn or the tip-hooking and edge-curling of the second tobacco leaf in the three-layer curing barn; after the tip of the tobacco leaves is hooked and the edges are curled, opening a cold air door by 3 fingers, and simultaneously operating a high-grade circulating fan; then, at the heating rate of 1 ℃/3 hours, the dry-bulb temperature is increased to 42 ℃, the wet-bulb temperature is adjusted to 34 ℃, and the baking is continued for 18-22 hours after the dry-bulb temperature and the wet-bulb temperature are stable until a second tobacco leaf small winding drum in the four-layer baking room or a second tobacco leaf small winding drum in the three-layer baking room; after the tobacco leaves appear in the small reel, opening a cold air door by 3-4 fingers, and simultaneously operating a high-grade circulating fan; then, at the heating rate of 1 ℃/2-3 hours, the dry bulb temperature is increased to 44-45 ℃, and the wet bulb temperature is adjusted to 34 ℃; after the dry and wet ball temperatures are stable, continuously baking for 10-18 h until the third tobacco leaf small reel in the four-layer baking room or the second tobacco leaf large reel in the three-layer baking room; meanwhile, the cold air door is opened by 3-5 fingers, and a high-grade circulating fan is operated.
4. The curing method for improving the quality of NC102 tobacco leaves according to claim 2, wherein the fixation period curing comprises: the first-stage baking for fixing color, the middle-stage baking for fixing color and the later-stage baking for fixing color;
the color fixing early-stage baking comprises the following steps: after the yellowing later stage is finished, the temperature of the dry balls is increased to 48 ℃ at the heating rate of 1 ℃/1 hour, the temperature of the wet balls is adjusted to 34.5 ℃, and the tobacco is continuously baked for 18 to 22 hours after the temperature of the dry balls and the temperature of the wet balls are stable until a first tobacco leaf small reel in a four-layer baking room or a first tobacco leaf small reel in a three-layer baking room; meanwhile, the cold air door is opened by 3 fingers, and a high-grade circulating fan is operated;
the fixation middle-term baking comprises the following steps: after the color fixing early-stage baking is finished, the temperature of the dry balls is increased to 54 ℃ at the heating rate of 1 ℃/1 hour, the temperature of the wet balls is adjusted to 35 ℃, and the baking is continued for 10-12 hours after the temperature of the dry balls and the temperature of the wet balls are stable until a four-layer baking room or a three-layer baking room full-furnace large winding drum is obtained; meanwhile, opening a cold air door by 3-4 fingers, and operating a high-grade circulating fan;
the fixation later-stage baking comprises the following steps: after the fixation medium-term baking is finished, the temperature of the dry bulb is raised to 62 ℃ at the heating rate of 1 ℃/1 hour, the temperature of the wet bulb is adjusted to 37 ℃, and the tobacco leaves are continuously baked for 8 to 10 hours after the dry bulb and the wet bulb are stabilized until the main veins of all the tobacco leaves in the four-layer baking room or the three-layer baking room are dried by more than one third; meanwhile, the cold air door is opened by 3-4 fingers, and a high-grade circulating fan is operated.
5. The curing method for improving the quality of the NC102 tobacco leaves according to claim 2, wherein the curing in the dry stem period is as follows: after the fixing period is finished, the dry bulb temperature is increased to 65-68 ℃ at the heating rate of 1 ℃/1 hour, the wet bulb temperature is adjusted to 38 ℃, and after the dry bulb temperature and the wet bulb temperature are stable, the tobacco leaves are baked until the main veins of the whole-furnace tobacco leaves in the four-layer baking room or the three-layer baking room are all baked; meanwhile, the cold air door is opened by 3-4 fingers, and a low-grade circulating fan is operated.
6. The curing method for improving the quality of the tobacco leaves of the NC102 variety according to claim 1, wherein the staggered cross form is preferably that the tobacco leaves in a curing barn gradually reduce 1-2 tobacco stems from top to bottom and form the staggered cross.
7. The curing method for improving the quality of tobacco leaves of an NC102 variety according to claim 2, wherein the three-layer curing barn or the four-layer curing barn is an airflow descending type bulk curing barn.
8. The curing method for improving the quality of tobacco leaves of NC102 varieties according to claim 2, wherein the third station of the three-layer curing barn isThe fourth tobacco loading density of the four-layer curing barn is 41-42 kg/m 3 The tobacco density of the first of the three-layer curing barn and the first of the four-layer curing barn are both 37-38 kg/m 3 。
9. The curing method for improving the quality of the NC102 tobacco leaves according to claim 1, wherein the fresh NC102 tobacco leaves are ripe fresh tobacco leaves with white tobacco stems, yellowish leaf surfaces and most of shed fuzz.
10. The curing method for improving the quality of NC102 tobacco leaves according to claim 3, wherein the low-gear circulating fan r =960 rpm; and r =1440 rpm of the high-grade circulating fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111407580.2A CN115381125A (en) | 2021-11-24 | 2021-11-24 | Baking method for improving quality of NC102 tobacco leaves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111407580.2A CN115381125A (en) | 2021-11-24 | 2021-11-24 | Baking method for improving quality of NC102 tobacco leaves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115381125A true CN115381125A (en) | 2022-11-25 |
Family
ID=84114384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111407580.2A Pending CN115381125A (en) | 2021-11-24 | 2021-11-24 | Baking method for improving quality of NC102 tobacco leaves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115381125A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105455187A (en) * | 2015-12-02 | 2016-04-06 | 云南省农业科学院农业环境资源研究所 | Intensive curing method for flue-cured tobacco variety NC102 |
| CN108514151A (en) * | 2018-05-16 | 2018-09-11 | 云南省烟草公司普洱市公司墨江县分公司 | It is planted in the baking method of the tobacco NC71 of damp-heat area |
| CN109288111A (en) * | 2018-11-28 | 2019-02-01 | 湖南科技大学 | Eight sections of baking process of NC102 upper tobacco leaf |
| CN110638081A (en) * | 2019-10-10 | 2020-01-03 | 云南省烟草农业科学研究院 | High-efficiency baking method for improving appearance quality of K326 tobacco leaves |
| CN112042993A (en) * | 2020-09-28 | 2020-12-08 | 云南省烟草农业科学研究院 | Flue-cured tobacco curing method for improving amino acid content of tobacco leaves of heated cigarettes and application |
| CN112273700A (en) * | 2020-10-30 | 2021-01-29 | 云南省烟草农业科学研究院 | Method for modulating upper leaves of flue-cured tobaccos |
-
2021
- 2021-11-24 CN CN202111407580.2A patent/CN115381125A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105455187A (en) * | 2015-12-02 | 2016-04-06 | 云南省农业科学院农业环境资源研究所 | Intensive curing method for flue-cured tobacco variety NC102 |
| CN108514151A (en) * | 2018-05-16 | 2018-09-11 | 云南省烟草公司普洱市公司墨江县分公司 | It is planted in the baking method of the tobacco NC71 of damp-heat area |
| CN109288111A (en) * | 2018-11-28 | 2019-02-01 | 湖南科技大学 | Eight sections of baking process of NC102 upper tobacco leaf |
| CN110638081A (en) * | 2019-10-10 | 2020-01-03 | 云南省烟草农业科学研究院 | High-efficiency baking method for improving appearance quality of K326 tobacco leaves |
| CN112042993A (en) * | 2020-09-28 | 2020-12-08 | 云南省烟草农业科学研究院 | Flue-cured tobacco curing method for improving amino acid content of tobacco leaves of heated cigarettes and application |
| CN112273700A (en) * | 2020-10-30 | 2021-01-29 | 云南省烟草农业科学研究院 | Method for modulating upper leaves of flue-cured tobaccos |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101991180B (en) | Tobacco leaf curing process capable of improving curing quality of flue-cured tobacco variety KRK26 | |
| CN109691681B (en) | Intensive baking process for cloud 87 tobacco leaf baking soft baking aroma | |
| CN109288113B (en) | Roasting process of Yunyan 87 in biomass energy roasting room | |
| CN107048459B (en) | Reduce No. 7 tobacco leaf dusts of Henan cigarette and black poor dense drying method and its application | |
| CN107594607A (en) | A kind of wet flue-cured tobacco dense drying method of steady temperature drop | |
| CN112273700B (en) | Method for modulating upper leaves of flue-cured tobaccos | |
| CN110786532B (en) | Baking method for reducing TSNAs of different varieties of flue-cured tobaccos by using strains | |
| CN110638081A (en) | High-efficiency baking method for improving appearance quality of K326 tobacco leaves | |
| CN107280061B (en) | A kind of Upper Leaf of Flue-cured Tobacco accelerating baking process | |
| CN107736642A (en) | A kind of baking process of flue-cured tobacco cultivars Henan cigarette 11 | |
| CN107836744A (en) | A kind of steady wet flue-cured tobacco dense drying method heated | |
| CN111084403B (en) | Medium-temperature moisture-preserving yellowing intensive hanging rod baking method for middle-upper tobacco leaves | |
| CN111493352B (en) | Peduncle-removing baking method capable of effectively reducing characteristic attenuation of smoke fragrance of cinnabar | |
| CN107028214A (en) | It is adapted to the baking of flue-cured tobacco technique of the kind tobacco flue-curing of cloud and mist 116 | |
| CN106235371B (en) | Bulk curing barn dissipates the persistently overheating roasting fragrant roasting soft baking method of leaf accumulation dress cigarette | |
| CN108669621A (en) | A kind of tobacco flue-curing method reducing the black poor cigarette incidence of warm wet cigarette district | |
| CN106418646B (en) | A kind of upper smoke picking and roasting technique for growing special flue-cured tobacco | |
| CN104223343B (en) | Bulk curing method for flue-cured tobacco | |
| CN109924532B (en) | Method for removing wax layer of flue-cured tobacco and improving water loss characteristic of tobacco leaf and application thereof | |
| CN115381125A (en) | Baking method for improving quality of NC102 tobacco leaves | |
| CN108514151B (en) | Baking method of tobacco NC71 planted in damp and hot areas | |
| CN106343603A (en) | Bulk curing barn net-type tobacco frame loading continuous-heating baking method for achieving fragrance and softness | |
| CN113907390B (en) | Modulation method for reducing ash hanging of tobacco leaf smoking and baking | |
| CN111109638A (en) | Tobacco leaf modulating process method adopting time oscillation | |
| CN113876013B (en) | Substance for reducing TSNAs of flue-cured tobaccos with different maturity, application and baking process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |