CN108113041A - A kind of baking method of flue-cured tobacco cultivars NC55 tobacco leaves - Google Patents

A kind of baking method of flue-cured tobacco cultivars NC55 tobacco leaves Download PDF

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Publication number
CN108113041A
CN108113041A CN201611073701.3A CN201611073701A CN108113041A CN 108113041 A CN108113041 A CN 108113041A CN 201611073701 A CN201611073701 A CN 201611073701A CN 108113041 A CN108113041 A CN 108113041A
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stage
temperature
barn
tobacco
fixation
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贺广生
李文才
王晓宾
汪军
钟俊周
王晓剑
郭鸿雁
文志强
陈泽鹏
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GUANGDONG TOBACCO SHAOGUAN Co Ltd
China National Tobacco Corp Guangdong Branch
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GUANGDONG TOBACCO SHAOGUAN Co Ltd
China National Tobacco Corp Guangdong Branch
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Publication of CN108113041A publication Critical patent/CN108113041A/en
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    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00Preparing tobacco in the factory
    • A24B3/10Roasting or cooling tobacco

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Abstract

The invention belongs to technical field of tobacco processing, and in particular to a kind of baking method of flue-cured tobacco cultivars NC55 tobacco leaves;The lower tobacco leaf, middle tobacco leaf and upper tobacco leaf that brunisolic soil is planted to obtain NC55 by the present invention are divided in different barns and toast, temperature during tobacco leaf changing yellow stage in barn is slowly raised, the circulating fan that the different baking stages of changing yellow stage, fixation stage and drying muscle stage use carries out frequency conversionization regulation and control, and the entire baking stage is divided into 10 segments;Changing yellow stage low speed heating simultaneously, changing yellow stage temperature are controlled below 38 DEG C;High temperature turn yellow steady temperature extend 12 it is small when, fixation middle and later periods steady temperature extend 12 it is small when;Not only presentation quality is superior by the NC55 finally toasted, but also can coordinate tobacco leaf intrinsic chemical ingredient, improve tobacco leaf sensory evaluating smoking's mass, increases economic efficiency.

Description

A kind of baking method of flue-cured tobacco cultivars NC55 tobacco leaves
Technical field
The invention belongs to technical field of tobacco processing, and in particular to a kind of baking method of flue-cured tobacco cultivars NC55 tobacco leaves.
Background technology
NC55 is U.S.'s Introduced Flue-cured Tobacco Cultivars, and breeding time is slightly long, and stem girth is smaller, anti-PVY, average price, the output value, first-class cigarette ratio It increases, presentation quality is preferable, chemical composition is coordinated, inclined strong-flavor style among tool.
The quality and style and features of tobacco leaf gradually form in tobacco leaf growth and development process, are embodied by modulation technique Out, the basic goal of tobacco flue-curing, which seeks to appear and play tobacco leaf to greatest extent, forms and builds up during agronomy The quality potentiality come.
Intensive barn curing is the novel tobacco roasting plant of tobacco leaf producing region large-scale promotion application in recent years, is tobacco flue-curing The important technical reform of link.Not only cured tobacco leaf color is vivider for bulk curing barn, evenness, effectively reduces dust Cigarette, variegated cigarette ratio, hence it is evident that improve tobacco leaf appearance commercial grade quality;And intensive barn curing is with capacity is big, dress cigarette is more, solely The advantages that vertical heat supply, wind turbine force heat supply and ventilation dewetting can effectively improve the security, baking efficiency and tobacco leaf of tobacco flue-curing Quality.
But in popularization and application, discovery has partially light considerable part intensive barn curing cured tobacco leaf color, oil reduction, fragrance The phenomenon that reduction.
Due to different flue-cured tobacco cultivars, in plantation, growth, baking etc., can all there be different demands, so as to fulfill not Same flue-cured tobacco cultivars flavor therefore, it is necessary to be directed to different flue-cured tobacco cultivars, meets its optimal growth needs or baking needs, The plantation for being suitble to the flue-cured tobacco cultivars, fertilising or baking scheme are provided.
The content of the invention
To solve the above-mentioned problems, it is an object of the invention to provide the baking methods of flue-cured tobacco cultivars NC55 tobacco leaves;The party The cigarette that method toasts out not only increases tobacco flue-curing presentation quality, and can coordinate tobacco leaf intrinsic chemical ingredient, improve tobacco leaf Sensory evaluating smoking's mass.
The present invention is achieved through the following technical solutions:
A kind of baking method of flue-cured tobacco cultivars NC55 tobacco leaves, baking process includes changing yellow stage, fixation stage and drying muscle stage, described The lower tobacco leaf of NC55, middle tobacco leaf and upper tobacco leaf are divided in different barns and are toasted, the tobacco leaf changing yellow stage phase in the barn Between temperature slowly raise, circulating fan that the changing yellow stage, fixation stage and drying muscle stage difference baking stage use carries out frequency conversion Regulation and control, medium temperature changing yellow stage, high temperature turn yellow steady temperature extend 12 it is small when, fixation middle and later periods steady temperature extend 12 it is small when.
Wherein, the changing yellow stage includes following several stages:
(1) temperature control on fire:The temperature in barn is raised to 35.2 ± 0.2 DEG C with the rate of 1 DEG C/3h, controls wet-bulb temperature For 35.0 ± 0.2 DEG C, steady temperature 2h;
(2) turn yellow initial stage:The temperature in barn is raised to 36.5 ± 0.2 DEG C with the rate of 0.1 DEG C/h, controls wet-bulb temperature For 35.0 ± 0.2 DEG C, 28~34h of steady temperature;
(3) flavescence mid-term:The temperature in barn is raised to 37.2 ± 0.2 DEG C with the rate of 0.1 DEG C/h, controls wet-bulb temperature For 36.0 ± 0.2 DEG C, 15~20h of steady temperature;
(4) turn yellow the later stage:The temperature in barn is raised to 38.0 ± 0.2 DEG C with the rate of 0.1 DEG C/h, controls wet-bulb temperature For 36.5 ± 0.2 DEG C, 10~22h of steady temperature.
Heating rate and steady warm time actually determine each stage baking time, so as to determine in baking process enzyme reaction and The degree of substance decomposition conversion.Heating rate is equal to changing yellow stage and fixation stage slowly, and surely the warm time is long, can promote pigment and starch Macromolecular substances is waited to may advantageously facilitate the synthesis conversion of small-molecule substance ingredient compared with fully degraded, improve quality of tobacco and integrally assist Tonality shows tobacco leaf Luzhou-flavor feature;But baking time is partially short and partially long, in addition higher wind speed drying, can cause after baking The aroma substance synthesis deficiency of tobacco leaf or loss.The fixation stage includes following several stages:
(1) fixation initial stage:The temperature in barn is raised to 41.2 ± 0.2 DEG C with the rate of 1 DEG C/2h, controls wet-bulb temperature For 38.5 ± 0.2 DEG C, 10~15h of steady temperature;
(2) Earlier stage of fixing color:The temperature in barn is raised to 43.2 ± 0.2 DEG C with the rate of 1 DEG C/2h, controls wet-bulb temperature For 38.5 ± 0.2 DEG C, 15~20h of steady temperature;
(3) fixation mid-term:The temperature in barn is raised to 47.2 ± 0.2 DEG C with the rate of 1 DEG C/2h, controls wet-bulb temperature For 41.0 ± 0.2 DEG C, 15~20h of steady temperature;
(4) the fixation later stage:The temperature in barn is raised to 52.2 ± 0.2 DEG C with the rate of 1 DEG C/2h, controls wet-bulb temperature For 41.0 ± 0.2 DEG C, 20~25h of steady temperature.
Invention increases key point delay times, improve wet-bulb temperature early period that turns yellow, and wind speed changes and hydrofuge task phase With reference to baking target is established on the basis of inherent quality of tobacco leaf is paid attention to, and takes into account presentation quality.
The drying muscle stage includes following several stages:
(1) dry muscle initial stage:The temperature in barn is raised to 56.5 ± 0.2 DEG C with the rate of 1 DEG C/h, controls the wet-bulb temperature to be 41.0 ± 0.2 DEG C, 2~5h of steady temperature;
(2) the dry muscle later stage:The temperature in barn is raised to 65.5 ± 0.2 DEG C with the rate of 1 DEG C/h, controls the wet-bulb temperature to be It is 42 DEG C, steady warm to absolutely dry.
It is preferred that the changing yellow stage electric machine frequency variation is 30 ± 2Hz, 35 ± 2Hz, 40 ± 2Hz, 40 ± 2Hz, fixation stage Electric machine frequency variation is 45 ± 2Hz, 48 ± 2Hz, 48 ± 2Hz, 48 ± 2Hz, and the variation of drying muscle stage electric machine frequency is 35 ± 2Hz, 30 ±2Hz.According to the different baking stages, different frequency parameters is set, wind speed is stablized relatively between keeping barn tobacco leaf folial gap.By It is reduced in wind speed, hydrofuge speed can be slowed down, extended and turn yellow and the fixation time, be conducive to improve tobacco flue-curing presentation quality, coordinate Tobacco leaf intrinsic chemical ingredient improves tobacco leaf sensory evaluating smoking's mass.
It is preferred that in the changing yellow stage, temperature control stage motor speed on fire is 480~520r/min, turn yellow initial stage motor Rotating speed is 700~740r/min, and flavescence mid-term motor speed is 940~980r/min, the later stage motor speed that turns yellow for 940~ 980r/min。
It is preferred that in the fixation stage, fixation initial stage motor speed is 1000~1200r/min, Earlier stage of fixing color motor turns Speed is 1380~1440r/min, and fixation mid-term motor speed is 1380~1440r/min, and fixation later stage motor speed is 1380 ~1440r/min.
It is preferred that in the drying muscle stage, dry muscle initial stage motor speed is 700~740r/min, dry muscle later stage motor speed For 480~520r/min.
Wind speed size is related with rotation speed of fan, baking stage tobacco leaf variable condition between folial gap in barn.In same baking rank Section, rotation speed of fan improve, and air quantity and wind pressure increase in barn, and wind speed can increase therewith between folial gap.In the item that rotation speed of fan is constant Under part, with baking process, tobacco leaf dehydration is wilting, drying reel, and interlobar fissure expands, and wind speed also can be with increase.
It is preferred that the barn used in the baking method is 8m × 2.7m × 3 layer bulk curing barn, the circulating fan used It is No. 74 rachis flow fans, air quantity 15000m3/ more than h, 170~250Pa of wind pressure, built-in motor are integrally coupled, power of motor 2.2kw, amount frequency 50Hz, 500~1440r/min of rotating speed.It is preferred that the flue-cured tobacco cultivars NC55 is Shandong Cheng Gezhuan palm fibres The NC55 that loam is planted, the lower tobacco leaf age of the NC55 is 55~60 days during baking, the middle part tobacco leaf age of the NC55 For 102~107 days, the upper smoke leaf age of the NC55 was 110~115 days.Planting soil is brunisolic soil, and pH value 6.63 contains Organic matter 0.657%, available nitrogen 72.89mg/kg, available phosphorus 21.64mg/kg, effective potassium 200mg/kg, effective chlorine 28.36mg/ kg。
Wherein, different flue-cured tobacco cultivars have different ecological zones different adaptability, and the variation of ecological condition is not to Quality of tobacco with flue-cured tobacco cultivars has a great impact;The requirement of the biological characteristics and tillage and cultivation of different tobacco breds is not Together, the requirement to the soil texture is also different;The soil texture is to the fertility of tobacco-growing soil, moisture, permeability, thermal conductivity and micro- life Object activity situation etc. all plays conclusive effect, and the formation with flue cured tobacco quality has substantial connection.It is baked in tobacco-growing soil type The dynamic change and life that larger molecular organics matter (starch, protein, pigment etc.) is degraded in cigarette main breed Tobacco Leaf Curing Reason mechanism.
Maturity is the principal element of quality of tobacco, is the core of quality of tobacco, closely related with the color of tobacco leaf Therefore tobacco leaf picking maturity, the present invention takes lower tobacco leaf age, and for 55~60 days, middle part tobacco leaf age was 102~107 days, top Tobacco leaf age is the NC55 tobacco leaves of 110~115 days, coordinates the baking method of the present invention, and it is good that tobacco leaf bakes rear presentation quality, content of starch Relatively low, content of reducing sugar conveniently, chemical composition relatively coordinate, tobacco aroma quality is high, perfume quantity foot, and pleasant impression is still suitable, and industry is available Property it is high.The present invention is not united by the accurate assurance to Maturity of Tobacco Leaf according to often occurring tobacco leaf picking standard in cured tobacco production One the phenomenon that, with reference to intensive baking process optimum results, a plurality of intensive baking process was formulated for differing maturity tobacco leaf.
The lower tobacco leaf, middle tobacco leaf and upper tobacco leaf that Shandong Cheng Gezhuan brunisolic soils are planted to obtain NC55 by the present invention are divided in Different barns are toasted, and temperature slowly raises during tobacco leaf changing yellow stage in barn, and the changing yellow stage, fixation stage and drying muscle stage are not Frequency conversionization regulation and control are carried out with the circulating fan that the baking stage uses, it is entire to toast substage as 10 segments, while different bakings The circulating fan that stage uses carries out frequency conversionization regulation and control, while changing yellow stage control low speed heating, changing yellow stage temperature are controlled at 39 DEG C Below.Medium temperature changing yellow stage, high temperature turn yellow steady temperature extend 12 it is small when, fixation middle and later periods steady temperature extend 12 it is small when;Entire yellowing stage Time it is small not less than 48 when, when time in fixation stage is small not less than 56.The NC55 finally toasted not only appearance matter Measure it is superior, while and can coordinate tobacco leaf intrinsic chemical ingredient, improve tobacco leaf sensory evaluating smoking's mass;Finally increase economic efficiency.
Specific embodiment
The present invention is described in further detail With reference to embodiment, is managed to help those skilled in the art The solution present invention.
Embodiment 1
A kind of baking method of flue-cured tobacco cultivars NC55 tobacco leaves, NC55 select the NC55 that brunisolic soil is planted, middle part tobacco leaf Age is 104 days.Baking process includes changing yellow stage, fixation stage and drying muscle stage.
Changing yellow stage:
(1) temperature control on fire:The temperature in barn is raised to 35.2 DEG C with the rate of 1 DEG C/3h, it is 35.0 to control wet-bulb temperature DEG C, steady temperature 2h;Electric machine frequency variation is 30Hz, rotating speed 500r/min.
(2) turn yellow initial stage:The temperature in barn is raised to 36.5 DEG C with the rate of 0.1 DEG C/h, controls the wet-bulb temperature to be 35.0 DEG C, steady temperature 30h;Electric machine frequency variation is 35Hz, rotating speed 720r/min.
(3) flavescence mid-term:The temperature in barn is raised to 37.2 DEG C with the rate of 0.1 DEG C/h, controls the wet-bulb temperature to be 36.0 DEG C, steady temperature 18h;Electric machine frequency variation is 40Hz, rotating speed 960r/min.
(4) turn yellow the later stage:The temperature in barn is raised to 38.0 DEG C with the rate of 0.1 DEG C/h, controls the wet-bulb temperature to be 36.5 DEG C, steady temperature 22h.Electric machine frequency variation is 40Hz, rotating speed 960r/min.
Fixation stage:
(1) fixation initial stage:The temperature in barn is raised to 41.2 DEG C with the rate of 1 DEG C/2h, it is 38.5 to control wet-bulb temperature DEG C, steady temperature 12h;Electric machine frequency variation is 45Hz, rotating speed 1180r/min.
(2) Earlier stage of fixing color:The temperature in barn is raised to 43.2 DEG C with the rate of 1 DEG C/2h, it is 38.5 to control wet-bulb temperature DEG C, steady temperature 18h;Electric machine frequency variation is 482Hz, rotating speed 1440r/min.
(3) fixation mid-term:The temperature in barn is raised to 47.2 DEG C with the rate of 1 DEG C/2h, it is 41.0 to control wet-bulb temperature DEG C, steady temperature 18h;Electric machine frequency variation is 48Hz, rotating speed 1440r/min.
(4) the fixation later stage:The temperature in barn is raised to 52.2 DEG C with the rate of 1 DEG C/2h, it is 41.0 to control wet-bulb temperature DEG C, steady temperature 22h.Electric machine frequency variation is 48Hz, rotating speed 1440r/min.
Drying muscle stage:
(1) dry muscle initial stage:The temperature in barn is raised to 56.5 DEG C with the rate of 1 DEG C/h, it is 41.0 to control wet-bulb temperature DEG C, steady temperature 4h;Electric machine frequency variation is 35Hz, rotating speed 720r/min.
(2) the dry muscle later stage:The temperature in barn is raised to 65.5 DEG C with the rate of 1 DEG C/h, controls wet-bulb temperature as 42 DEG C, It is steady warm to absolutely dry.Electric machine frequency variation is 30Hz, rotating speed 500r/min.
Embodiment 2
A kind of baking method of flue-cured tobacco cultivars NC55 tobacco leaves, NC55 select the NC55 that brunisolic soil is planted, baking when institute The lower tobacco leaf age for stating NC55 is 55 days.Baking process includes changing yellow stage, fixation stage and drying muscle stage.
Changing yellow stage:
(1) temperature control on fire:The temperature in barn is raised to 35.0 DEG C with the rate of 1 DEG C/3h, it is 35.0 to control wet-bulb temperature DEG C, steady temperature 2h;Electric machine frequency variation is 32Hz, rotating speed 480r/min.
(2) turn yellow initial stage:The temperature in barn is raised to 36.7 DEG C with the rate of 0.1 DEG C/h, controls the wet-bulb temperature to be 34.9 DEG C, steady temperature 34h;Electric machine frequency variation is 37Hz, rotating speed 700r/min.
(3) flavescence mid-term:The temperature in barn is raised to 37.4 DEG C with the rate of 0.1 DEG C/h, controls the wet-bulb temperature to be 35.9 DEG C, steady temperature 20h;Electric machine frequency variation is 42Hz, rotating speed 940r/min.
(4) turn yellow the later stage:The temperature in barn is raised to 38.2 DEG C with the rate of 0.1 DEG C/h, controls the wet-bulb temperature to be 36.3 DEG C, steady temperature 18h.Electric machine frequency variation is 42Hz, rotating speed 940r/min.
Fixation stage:
(1) fixation initial stage:The temperature in barn is raised to 41.0 DEG C with the rate of 1 DEG C/2h, it is 38.3 to control wet-bulb temperature DEG C, steady temperature 15h;Electric machine frequency variation is 47Hz, rotating speed 1000r/min.
(2) Earlier stage of fixing color:The temperature in barn is raised to 43.0 DEG C with the rate of 1 DEG C/2h, it is 38.7 to control wet-bulb temperature DEG C, steady temperature 20h;Electric machine frequency variation is 50Hz, rotating speed 1380r/min.
(3) fixation mid-term:The temperature in barn is raised to 47.2 DEG C with the rate of 1 DEG C/2h, it is 40.8 to control wet-bulb temperature DEG C, steady temperature 20h;Electric machine frequency variation is 50Hz, rotating speed 1380r/min.
(4) the fixation later stage:The temperature in barn is raised to 52.4 DEG C with the rate of 1 DEG C/2h, it is 41.0 to control wet-bulb temperature DEG C, steady temperature 25h.Electric machine frequency variation is 50Hz, rotating speed 1380r/min.
Drying muscle stage:
(1) dry muscle initial stage:The temperature in barn is raised to 56.7 DEG C with the rate of 1 DEG C/h, it is 41.0 to control wet-bulb temperature DEG C, steady temperature 5h;Electric machine frequency variation is 37Hz, rotating speed 700r/min.
(2) the dry muscle later stage:The temperature in barn is raised to 65.7 DEG C with the rate of 1 DEG C/h, controls wet-bulb temperature as 42 DEG C, It is steady warm to absolutely dry.Electric machine frequency variation is 32Hz, rotating speed 480r/min.
Embodiment 3
A kind of baking method of flue-cured tobacco cultivars NC55 tobacco leaves, NC55 select the NC55 that brunisolic soil is planted, baking when institute The upper smoke leaf age for stating NC55 is 115 days.Baking process includes changing yellow stage, fixation stage and drying muscle stage.
Changing yellow stage:
(1) temperature control on fire:The temperature in barn is raised to 35.0 DEG C with the rate of 1 DEG C/3h, it is 34.8 to control wet-bulb temperature DEG C, steady temperature 2h;Electric machine frequency variation is 28Hz, rotating speed 520r/min.
(2) turn yellow initial stage:The temperature in barn is raised to 36.3 DEG C with the rate of 0.1 DEG C/h, controls the wet-bulb temperature to be 34.8 DEG C, steady temperature 28h;Electric machine frequency variation is 33Hz, rotating speed 740r/min.
(3) flavescence mid-term:The temperature in barn is raised to 37.0 DEG C with the rate of 0.1 DEG C/h, controls the wet-bulb temperature to be 36.1 DEG C, steady temperature 15h;Electric machine frequency variation is 38Hz, rotating speed 980r/min.
(4) turn yellow the later stage:The temperature in barn is raised to 37.8 DEG C with the rate of 0.1 DEG C/h, controls the wet-bulb temperature to be 36.3 DEG C, steady temperature 10h.Electric machine frequency variation is 38Hz, rotating speed 980r/min.
Fixation stage:
(1) fixation initial stage:The temperature in barn is raised to 41.0 DEG C with the rate of 1 DEG C/2h, it is 38.3 to control wet-bulb temperature DEG C, steady temperature 10h;Electric machine frequency variation is 43Hz, rotating speed 1200r/min.
(2) Earlier stage of fixing color:The temperature in barn is raised to 43.0 DEG C with the rate of 1 DEG C/2h, it is 38.3 to control wet-bulb temperature DEG C, steady temperature 15h;Electric machine frequency variation is 46Hz, rotating speed 1440r/min.
(3) fixation mid-term:The temperature in barn is raised to 47.0 DEG C with the rate of 1 DEG C/2h, it is 41.0 to control wet-bulb temperature DEG C, steady temperature 15h;Electric machine frequency variation is 46Hz, rotating speed 1440r/min.
(4) the fixation later stage:The temperature in barn is raised to 52.0 DEG C with the rate of 1 DEG C/2h, it is 41.2 to control wet-bulb temperature DEG C, steady temperature 20h.Electric machine frequency variation is 46Hz, rotating speed 1440r/min.
Drying muscle stage:
(1) dry muscle initial stage:The temperature in barn is raised to 56.4 DEG C with the rate of 1 DEG C/h, it is 41.0 to control wet-bulb temperature DEG C, steady temperature 2h;Electric machine frequency variation is 37Hz, rotating speed 740r/min.
(2) the dry muscle later stage:The temperature in barn is raised to 65.3 DEG C with the rate of 1 DEG C/h, controls wet-bulb temperature as 42 DEG C, It is steady warm to absolutely dry.Electric machine frequency variation is 28Hz, rotating speed 520r/min.
Above-described embodiment, simply presently preferred embodiments of the present invention, is not used for limiting the scope of the present invention, therefore all with this The equivalent change or modification that feature and principle described in invention claim are done, should all be included in scope of the invention as claimed Within.
Related experiment:
Cigarette in the middle part of the NC55 that Shandong Cheng Gezhuan brunisolic soils are planted, in 104 days tobacco leaf ages, tying up bar with bamboo bar, to be hung on two roasting Two layers of room, one, three layer is tobacco leaf in the middle part of another peasant household, 420 pole of general assembly smoke.Barn A is using southern method for flue-curing tobacco leaves curve It is toasted, whole electric machine frequency, rotating speed are constant.Barn B is toasted using 1 the method for the embodiment of the present invention.
First, project and method are measured
Wind speed between temperature and two layers of folial gap is measured in barn with Tsing Hua Tong Fang's RHAT-301 types wind speed/thermometer.According to GB2635-92 flue-cured tobacco grade scales compare and analyze two layers of tobacco leaf presentation quality.(starch uses YC/ to routine chemical components T 216-2007, water-soluble sugar use YC/T 159-2002, and total nitrogen uses YC/T 161-2002, and total nicotine is distilled using kelvin Colorimetric method), sensory quality assessment (GB 5606.4-2005).
2nd, result
1. the different baking stages do, wet-bulb temperature and tobacco leaf situation of change
Wet-bulb temperature and tobacco leaf changing condition (table 1) in baking process.In yellowing stage, since barn A motors are complete Speed operates, and barn B motors are frequency conversion 30Hz runnings, therefore bis- layers of tobacco leaf dry-bulb temperatures of barn A are promoted comparatively fast, and tobacco leaf turns yellow fast Degree and degree are faster than barn B.
Circulating fan has Xun Huan air-supply heating and ventilation dewetting function concurrently, identical with shutter unlatching size in smoke filling density Under conditions of, wind speed is bigger, and hydrofuge speed is faster.In Earlier stage of fixing color, barn A motors operate at full speed for full range, and barn B motors are Frequency conversion 40Hz is operated, and barn A tobacco leaf dehydrations are slightly faster than barn B always, the fast 5~8h of drying tobacco speed.Until full room cigarette is done, bake Room A is than barn B about 10h in advance.
The different baking stages of table 1 do, the variation of wet-bulb temperature and tobacco leaf counts
2. the influence of rear presentation quality is baked tobacco leaf in different wind turbine processing
Random sampling 10% carries out Evaluation on Appearance Quality, as a result as table 2 counts.Two barn baking quality of tobacco are preferable, with Based on crocus, maturity, institutional framework are slightly good, and the differences such as oil, identity are little.Changing yellow stage wind turbine is adjusted by converter technique Rotating speed reduces in changing yellow stage barn wind speed between folial gap, extends the time that turns yellow, and has apparent work to improving tobacco leaf presentation quality With.
The different wind turbine processing tobacco leaf presentation quality statistics of table 2
3. different wind turbines handle the influence to tobacco leaf chemical composition
The harmony of tobacco leaf chemical composition directly reflects tobacco leaf maturation situation, also directly affects tobacco leaf sensory evaluating smoking's matter Amount.As shown in Table 3, two processing barn cigarette sample chemical compositions are more coordinated, and wherein barn B is compared with barn A, total reducing sugar and reduced sugar Difference high 1.8% and 2.6%, remaining component difference is little.This heats up the relatively slow, time with barn B in changing yellow stage and Earlier stage of fixing color Extend related.Baking time is appropriately extended before and after 42 DEG C, be conducive to amylase activity keep and starch degradation, increase total reducing sugar and Content of reducing sugar.
The different wind turbine processing tobacco leaf chemical composition statistics of table 3
4. the influence that different wind turbine processing smoke panel test to tobacco sensory quality
Sampling carries out aesthetic quality and smokes panel test, and barn B cigarettes sample is slightly better than barn A cigarette sample aroma qualities, and perfume quantity slightly feels sufficient, thorn Swash property and miscellaneous gas is smaller, pleasant impression is relatively comfortable.Illustrate by using converter technique, reduce in barn wind speed between folial gap, extend Turn yellow the time, improve tobacco leaf yellowing degree, be conducive to improve tobacco leaf sensory evaluating smoking's mass.
The different wind turbine processing tobacco sensory quality smoking results of table 4
Note:Total score=aroma quality × miscellaneous the gas of 20%+ perfume quantities × 35%+ × 20%+ irritations × 10%+ pleasant impression × 15%
5. influence of the different disposal to cured tobacco leaf economic characters
As can be seen that in the cigarette that the method for the present invention processing is handled compared to traditional handicraft, first-class cigarette ratio improves table 5 1.65%th, medium grade cigarette ratio improves 1.85%, upper medium grade cigarette ratio 2.69%;Every dry cigarette average prices of 1 ㎏ improve 0.72 yuan.
5 different disposal cured tobacco leaf Major Economic of table
In short, the present invention can facilitate using intensive barn curing modified motor frequency converter and adjust power frequency input, regulation and control are roasting Room rotation speed of fan under conditions of 420 pole of bulk curing barn smoke filling density, according to the different baking stages, sets different frequency parameters, Changing yellow stage frequency is 30Hz, 35Hz, 40Hz, 40Hz, and fixation stage set of frequency is 45Hz, 48Hz, 48Hz, 48Hz, and drying muscle stage is frequently Rate is arranged to 35Hz, 30Hz, and wind speed is stablized relatively between keeping barn tobacco leaf folial gap.Since wind speed reduces, hydrofuge speed can be slowed down Degree extends and turns yellow and the fixation time, is conducive to improve tobacco flue-curing presentation quality, coordinates tobacco leaf intrinsic chemical ingredient, improves cigarette Leaf sensory evaluating smoking's mass.

Claims (10)

1. a kind of baking method of flue-cured tobacco cultivars NC55 tobacco leaves, baking process includes changing yellow stage, fixation stage and drying muscle stage, feature It is, the lower tobacco leaf of the NC55, middle tobacco leaf and upper tobacco leaf are divided in different barns and are toasted, and tobacco leaf turns yellow in barn Temperature slowly raises during phase, and the circulating fan that the changing yellow stage, fixation stage and drying muscle stage difference baking stage use, which is carried out, to be become Frequencyization regulates and controls, the steady temperature of high temperature changing yellow stage extend 12 it is small when, fixation middle and later periods steady temperature extend 12 it is small when.
2. the baking method of flue-cured tobacco cultivars NC55 tobacco leaves as described in claim 1, which is characterized in that the changing yellow stage includes as follows Several stages:
(1) temperature control on fire:The temperature in barn is raised to 35.2 ± 0.2 DEG C with the rate of 1 DEG C/3h, controls the wet-bulb temperature to be 35.0 ± 0.2 DEG C, steady temperature 2h;
(2) turn yellow initial stage:The temperature in barn is raised to 36.5 ± 0.2 DEG C with the rate of 0.1 DEG C/h, controls the wet-bulb temperature to be 35.0 ± 0.2 DEG C, 28~34h of steady temperature;
(3) flavescence mid-term:The temperature in barn is raised to 37.2 ± 0.2 DEG C with the rate of 0.1 DEG C/h, controls the wet-bulb temperature to be 36.0 ± 0.2 DEG C, 15~20h of steady temperature;
(4) turn yellow the later stage:The temperature in barn is raised to 38.0 ± 0.2 DEG C with the rate of 0.1 DEG C/h, controls the wet-bulb temperature to be 36.5 ± 0.2 DEG C, 10~22h of steady temperature.
3. the baking method of flue-cured tobacco cultivars NC55 tobacco leaves as described in claim 1, which is characterized in that the fixation stage includes as follows Several stages:
(1) fixation initial stage:The temperature in barn is raised to 41.2 ± 0.2 DEG C with the rate of 1 DEG C/2h, controls the wet-bulb temperature to be 38.5 ± 0.2 DEG C, 10~15h of steady temperature;
(2) Earlier stage of fixing color:The temperature in barn is raised to 43.2 ± 0.2 DEG C with the rate of 1 DEG C/2h, controls the wet-bulb temperature to be 38.5 ± 0.2 DEG C, 15~20h of steady temperature;
(3) fixation mid-term:The temperature in barn is raised to 47.2 ± 0.2 DEG C with the rate of 1 DEG C/2h, controls the wet-bulb temperature to be 41.0 ± 0.2 DEG C, 15~20h of steady temperature;
(4) the fixation later stage:The temperature in barn is raised to 52.2 ± 0.2 DEG C with the rate of 1 DEG C/2h, controls the wet-bulb temperature to be 41.0 ± 0.2 DEG C, 20~25h of steady temperature.
4. the baking method of flue-cured tobacco cultivars NC55 tobacco leaves as described in claim 1, which is characterized in that the drying muscle stage is by following several A stage composition:
(1) dry muscle initial stage:The temperature in barn is raised to 56.5 ± 0.2 DEG C with the rate of 1 DEG C/h, it is 41.0 to control wet-bulb temperature ± 0.2 DEG C, 2~5h of steady temperature;
(2) the dry muscle later stage:The temperature in barn is raised to 65.5 ± 0.2 DEG C with the rate of 1 DEG C/h, it is 42 to control wet-bulb temperature DEG C, it is steady warm to absolutely dry.
5. the baking method of flue-cured tobacco cultivars NC55 tobacco leaves as described in claim 1, which is characterized in that the changing yellow stage electric machine frequency Change as 30 ± 2Hz, 35 ± 2Hz, 40 ± 2Hz, 40 ± 2Hz, the variation of fixation stage electric machine frequency is 45 ± 2Hz, 48 ± 2Hz, 48 ± 2Hz, 48 ± 2Hz, the variation of drying muscle stage electric machine frequency are 35Hz, 30Hz.
6. the baking method of flue-cured tobacco cultivars NC55 tobacco leaves as claimed in claim 5, which is characterized in that on fire in the changing yellow stage Temperature control stage motor speed is 480~520r/min, the initial stage motor speed that turns yellow is 700~740r/min, flavescence mid-term motor Rotating speed is 940~980r/min, and the later stage motor speed that turns yellow is 940~980r/min.
7. the baking method of flue-cured tobacco cultivars NC55 tobacco leaves as claimed in claim 5, which is characterized in that in the fixation stage, fixation Initial stage motor speed is 1000~1200r/min, Earlier stage of fixing color motor speed is 1380~1440r/min, fixation mid-term motor Rotating speed is 1380~1440r/min, and fixation later stage motor speed is 1380~1440r/min.
8. the baking method of flue-cured tobacco cultivars NC55 tobacco leaves as claimed in claim 5, which is characterized in that in the drying muscle stage, dry muscle Initial stage motor speed is 700~740r/min, dry muscle later stage motor speed is 480~520r/min.
9. the baking method of flue-cured tobacco cultivars NC55 tobacco leaves as described in any one in claim 1-8, which is characterized in that the baking The barn used in roasting method is 8m × 2.7m × 3 layer bulk curing barn, and the circulating fan used is No. 74 rachis flow fans, air quantity 15000m3/ more than h, 170~250Pa of wind pressure, built-in motor are integrally coupled, power of motor 2.2kw, amount frequency 50Hz, rotating speed 500~1440r/min.
10. the baking method of flue-cured tobacco cultivars NC55 tobacco leaves as claimed in claim 9, which is characterized in that the flue-cured tobacco cultivars NC55 is the NC55 that are planted with brunisolic soil of Shandong Cheng Gezhuan, and the lower tobacco leaf age of the NC55 is 55~60 days during baking, The middle part tobacco leaf age of the NC55 is 102~107 days, and the upper smoke leaf age of the NC55 is 110~115 days.
CN201611073701.3A 2016-11-29 2016-11-29 A kind of baking method of flue-cured tobacco cultivars NC55 tobacco leaves Withdrawn CN108113041A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109820230A (en) * 2019-01-15 2019-05-31 云南省烟草公司大理州公司 Improve the bulk curing barn circulating fan control method of tobacco leaf judging parameter
CN110506969A (en) * 2019-07-31 2019-11-29 贵州省烟草公司黔西南州公司 A kind of method of tobacco leaf flavouring baking
CN114532569A (en) * 2022-04-18 2022-05-27 河南中烟工业有限责任公司 Variable-frequency air-control accelerated dehydration method for tobacco leaf curing in fixed-color period in bulk curing barn

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109820230A (en) * 2019-01-15 2019-05-31 云南省烟草公司大理州公司 Improve the bulk curing barn circulating fan control method of tobacco leaf judging parameter
CN110506969A (en) * 2019-07-31 2019-11-29 贵州省烟草公司黔西南州公司 A kind of method of tobacco leaf flavouring baking
CN114532569A (en) * 2022-04-18 2022-05-27 河南中烟工业有限责任公司 Variable-frequency air-control accelerated dehydration method for tobacco leaf curing in fixed-color period in bulk curing barn
CN114532569B (en) * 2022-04-18 2023-01-31 河南中烟工业有限责任公司 Variable-frequency air-control accelerated dehydration method for tobacco leaf curing in fixed-color period in bulk curing barn

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