86 results about "Tobacco water" patented technology

A reconstituted tobacco coating liquid preparing method suitable for a novel cigarette is characterized by comprising the steps of: firstly drying and smashing a tobacco raw material, extracting with ethyl alcohol solution, and after solid liquid separation, performing concentration under reduced pressure on filtrate to obtain a tobacco alcohol extract; adding enzyme into filter residue to degrade, and after secondary solid liquid separation, performing concentration under reduced pressure on filtrate to obtain a tobacco water extract; mixing the tobacco water extract, an amino compound and polyhydric alcohols to perform heating reaction to obtain a tobacco reactant; finally proportionally mixing the tobacco alcohol extract, the tobacco reactant and a heat conduction material dispersion liquid to obtain the coating liquid. After the prepared coating liquid is subjected to perfuming treatment, a coated substrate is made into regenerated tobacco, the novel cigarette product is endowed with a thick vivid cigarette fragrance and the smoke concentration and fragrance quality are obviously improved.

The utility model relates to a calibration method for the oven which is used for measuring water in the tobacco and a method for measuring the water in the tobacco; wherein the calibration method for the oven which is used for measuring water in the tobacco is as follows: a standard sample with known water content is put into the oven to be calibrated to do the test on a prescriptive environmental condition, then the difference between the determination result and the standard value is calculated, then the fan velocity and the heating curve of the oven are adjusted until the determination result and the standard value are uniform according to the difference. The utility model can guarantee the product quality stability and consistency of the same brand tobacco produced by different production lines and different manufacturing sites by calibrating any oven as the tool for calibrating the on-line water determinative instrument.

A processing method for increasing low-grade tobacco use value includes the steps: moistening a tobacco group composed of low-grade tobacco to enable the water content to be 18-22%; storing for 1-24h, and entering a lining feeder to enable the tobacco water content to be 28-36%; using a burley tobacco curing machine to dry the tobacco under the conditions that the temperature is 70-1100 DEG C and the process flow is 1600kg / h to enable the water content of tobacco in a cooling area to be 4-7%, and entering a resurgence area to enable the tobacco water content to be 10-14%; entering a surface material feeder to enable the tobacco water content to be 18.5-21.5% after surface material feeding, storing for 1-4h, and shredding, wherein the tobacco water content is 17.5-20.5%; and drying the shredded tobacco through a sheet cut-tobacco dryer to enable the tobacco water content to be 12.5-13.5% after drying of cut tobacco. By means of the processing method, the use ratio of low-grade tobacco in third-grade and fourth-grade cigarettes can be evidently increased to be 8-20%, and cost of formula raw materials can be remarkably lowered.

The invention relates to a method for testing tobacco water content based on a time-domain nuclear magnetic resonance inversion peak area. The method is characterized in that a CPMG sequence is used on a time domain time-domain nuclear magnetic resonance, 4-6 of the tobacco standard samples with different qualities are measured, a transverse relaxation spectrum of the standard sample is obtained by SIRT inversion of an original data, a primary peak area of the transverse relaxation spectrum is recorded, the water content of the standard sample is measured by using a microwave drying method, a standard curve of the primary peak area data and the water content of the standard sample is established, the sample with water content to be measured is measured, the obtained primary peak value is substituted into the standard curve, the water content of the to-be-measured sample is obtained, and the water content of the to-be-measured sample is obtained. The interference of an oil signal in a tobacco sample can be eliminated, influence of oil fraction in the tobacco is not generated, detection speed is fast, and the result is accurate. The sample preparation and solvent consumption are not required, the defect that the oil and water signals in the tobacco cannot be distinguished when a nuclear magnetic signal method is used for measuring water content of the tobacco, and the accuracy for measuring the water content of the tobacco oil-water signal sample is increased.

The invention relates to an air-flowing type dried tobacco water control method, which comprises the following steps of: measuring water at an inlet of an air-flowing type tobacco drying machine by a water meter arranged at the inlet of the air-flowing type tobacco drying machine, adjusting a first parameter of tobacco flow at the inlet by a feed forward control algorithm, and sending the first parameter to an electronic belt balance; measuring water at an outlet of the air-flowing type tobacco drying machine by a water meter arranged at the outlet of the air-flowing type tobacco drying machine, and obtaining a second parameter of the tobacco flow at the inlet according to results of the water meters and outlet water setting values; and sending the first parameter and the second parameter to the electronic belt balance at the front end of the air-flowing type tobacco drying machine, wherein the electronic belt balance adjusts the tobacco flow at the inlet by responding the first parameter and the second parameter sequentially or simultaneously. By a feed forward and feed back control mode, the standard drop of the water at the outlet of the air-flowing type tobacco drying machine is about 0.2, and a technical standard can be met.

The invention relates to a method for extracting a tobacco aroma substance from tobacco raw materials in a directional and combined manner by using a water extraction method and a supercritical CO2 extraction method. The method comprises the steps of (1) directionally extracting a polar aroma substance from tobacco by the water extraction method; (2) directionally extracting a nonpolar aroma substance from the tobacco by the supercritical CO2 extraction method; (3) mixing the polar aroma substance and the nonpolar aroma substance, wherein the proportioning ratio of the polar aroma substance to the nonpolar aroma substance is 1000: (0.1-5). According to the method, the used tobacco raw materials are tobacco leaves, cut tobaccos or wastes, such as tobacco powder, tobacco ash or tobacco stems of tiny grains, generated during tobacco processing, so that the waste is changed into the valuable, and the pollution to the environment is reduced; a water extraction tobacco concentrate and a supercritical CO2 tobacco extract are mixed in an appropriate ratio, and a composite aroma material is sprayed to reconstituted tobacco, so that the quality of the reconstituted tobacco is improved, the aroma amount is increased, the aroma charm is improved, the natural tobacco aroma is set off, the smoke dryness is lowered, the smoke-induced saliva secretion feeling is enhanced, and the degree of comfort of cigarette is increased.

The invention discloses a raw material extracting method for paper-making-method remade tobaccos. The raw materials extracting method includes steps of adding extracting solvent and tobacco raw materials into an extracting tank to obtain extracts; combining one or two of tobacco shreds and stems in an optional proportion to form the raw materials; obtaining tobacco water solution by means of squeezing, filtering and separating the extracts; concentrating the tobacco water solution in a vacuum manner; coating concentration liquid onto a paper base; and drying the paper base coated with the concentration liquid, so that the paper-making-method remade tobaccos are obtained. The raw material extracting method is simple in process and high in controllability, can be widely applied to producing the paper-making-method remade tobaccos, and offensive and irritancy of the remade tobaccos can be reduced.

The invention discloses a tobacco water retention biological organic fertilizer and a preparation method thereof. The preparation method comprises the following steps: fermenting wastes by using bacillus amyloliquefaciens (IAE), compounding the fermentation product with humic acid, and then secondarily fermenting vinegar residue compost to from a biological organic fertilizer which is suitable for tobaccos and has a water retention effect. In the biological organic fertilizer, the number of effective strains is more than or equal to 0.5*10<8>cfu / g, the content of an effective water retention material is more than or equal to 21g / kg in dry weight, the water content is less than or equal to 30%, and the organic content is more than or equal to 45%. A test shows that after the tobacco is transplanted for 30 days, the water content of 0-10cm of the tobacco field soil in which the biological organic fertilizer is applied is 32.7% higher than that of the soil in which the biological organic fertilizer is not applied and the tobacco plant biomass is increased by 55.6%. The water retention biological organic fertilizer disclosed by the invention can significantly increase the water content of the soil and improve the biomass of tobacco plants at the seedling stage.

The invention relates to a manufacturing method of tobacco water content detection standard sample and steps for applying to calibrate an oven, and is characterized in that, when the feed level is the same level in the same region only, the method comprises the following steps: sampling in the tobacco box at the packing pre-pressing place, removing the impurity from the sample, separating the peduncle leaves, removing the tobacco peduncle, taking the leaves and crushing through the whirlwind grinder, sieving, after mixing symmetrically by using the sampler, collecting in the sealed container,discharging the air, after a period of time, adequately symmetrically mixing the samples, respectively detecting the samples by all ovens according to the 'oven method', and then calculating the average water content rate of all detected samples, wherein the average valve is determined as the standard water content rate, the prepared sample is the standard sample, and the prepared standard sampleis used for calibrating the oven according to the oven method. The invention is capable of effectively standardizing and unifying the standard sample in the industry for water content detection and oven calibration, evaluating the accuracy of oven, and unifying the scaling range of oven in the industry, and generally improving the accuracy of oven in the industry and the stability for detecting the water content.

The invention discloses paenibacillus elgii D7 and application thereof to cellulose degradation.The strain can degrade cellulose materials such as sodium carboxymethylcellulose (CMC-Na), cellulose of waste and inferior tobacco water extracted residues and tobacco and tobacco stems after being subjected to fermental cultivation, meanwhile, cellulase produced by paenibacillus elgii D7 has the characteristics of resisting 60-DEG C high temperature and being wide in substrate pH4-8 catalysis range, and paenibacillus elgii D7 has tolerance to 5 g / L-10 g / L nicotine in the growth process.Compared with a physical and chemical method and mechanical method for degrading cellulose, degradation conditions of paenibacillus elgii D7 are milder.Compared with fungi, the reproductive capacity of bacteria is high, culture is easy, enlargement can be achieved step by step, and it is expected to achieve industrial application in a later period.Bacteria producing cellulase include bacillus amyloliquefaciens, clostridium thermocellum, paenibacillus elgii and the like.

The invention relates to a flue-cured tobacco flavor electronic cigarette atomization liquid and a preparation method thereof and provides a composition. The composition is prepared from the followingcomponents in parts by weight: 0.5 to 1.5 parts of flue-cured tobacco water extract, 1 to 5 parts of flue-cured tobacco ethanol extract, 3 to 7 parts of a flue-cured tobacco Maillard reactant, 0.01 to 0.5 part of a flue-cured tobacco molecular distillation light component, 0.5 to 2 parts of an organic acid and 1 to 2.5 parts of nicotine. The electronic cigarette atomized liquid containing the composition has the beneficial effects that the tobacco aroma is mellow and prominent, the characteristic style is vivid to restore, the hygienic safety standard is met, and the practical application purposes that the electronic cigarette liquid is clear, light in color and luster, free of precipitates and long in shelf life are achieved.

Disclosed are a process and an apparatus for improving tobacco raw material. The process mainly comprises performing an extraction from at least one of tobacco leafs, tobacco flakes, tobacco powder, stalks and cut stems by mixed solvents, conducting a solid-liquid separation for the tobacco raw material, applying the extract liquor of tobacco leaves, flakes and cuts for manufacturing tobacco extract and that of stalks and cut stems for manufacturing fertilizer, diluting and mixing a given amount of tobacco aqueous extract and ethanol extract and removing harmful components so as to get feed liquid, backfilling the feed liquid to the tobacco raw material, and drying the tobacco raw material to a certain dryness to obtain the products. The apparatus is a system composed of a plurality of interconnected independent devices such as extractor, solid-liquid separator, a feed liquid backfiller, etc.

The invention discloses a method for determining aqueous tobacco extract by adopting an online infrared-assisted hydration reaction head space-gas chromatography / mass spectrometry. The method comprises the following steps: (1) placing a test tube with aqueous tobacco extract into a head-space sample bottle, sealing a bottle opening, and placing a drying agent at the inner bottom of the head-space sample bottle; and (2) heating the head-space sample bottle by using an infrared lamp until vapor in the aqueous tobacco extract is completely absorbed by the drying agent, then carrying out the head space-gas chromatographic / mass spectrometric determination, calculating according to a peak area normalization method, and determining a relative percentage composition of each component. The detection method is simple, accurate and sensitive in operation, has a popularization and application value, can be effectively used for analyzing aromatic sample containing moisture such as essence and perfume, and is particularly suitable for head-space feeding solid samples containing moisture and liquid samples or solid samples containing a component capable of reacting with the drying agent.

The utility model discloses an automatic weighing device for detecting the moisture adsorption and desorption performance of tobaccos. The device comprises a sample placing unit arranged in an adsorption and desorption chamber and a weighing unit for detecting the weight of a sample. The device is characterized in that the sample placing unit comprises a rotating disc provided with a plurality ofsample grooves and a rotating disc driving mechanism. The driving mechanism comprises a rotating motor and a lifting cylinder, the rotating motor is fixed to a sliding block of the lifting cylinder and can reciprocate up and down under the action of the lifting cylinder, a rotating shaft of the rotating motor is fixedly connected with the rotating disc, a coding disc is arranged on the rotating motor, and the weighing unit comprises a mass detection module arranged in a mass detection module protection chamber and a weighing tray which is arranged in the adsorption and desorption chamber and is located under the sample disc. The device has the advantages that the automation degree is high, human interference is reduced, the experiment accuracy is improved, the real-time data detection andautomatic recording of multiple samples under the user-defined acquisition frequency (6-30 seconds / sample) can be realized, and the detection efficiency is improved.

The invention relates to a method for selecting spectrum scope in tobacco water-soluble sugar near infrared quantification model. Through research of a molecule structure of water-soluble sugar, synthesis frequency and frequency multiplication absorption scope at a near infrared spectrum of hydrogen containing group in the water-soluble sugar can be deduced, an interaction verification correlation coefficient and interaction verification mean square deviation of a near infrared model are taken as evaluation indexes for further optimization, and optimum spectrum scope of tobacco water-soluble sugar when the near infrared quantification model is established can be finally determined. Three different spectrum scopes are used for establishing the near infrared quantification model of tobacco water-soluble total sugar and reducing sugar, and then a comparison is carried out. A)a whole spectrum scope is 3800-10000cm<-1>; B)a spectrum scope is selected through automatic optimization by TQ Analyst; and C)the spectrum scope is determined through molecular structure analysis. According to the data, the evaluation index of the model is obviously better than other two methods through the molecular structure analysis.

The invention discloses an automatic weighing and material supplementing device for tobacco flake finished products. The automatic weighing and material supplementing device for the tobacco flake finished products comprises a conveying belt (2); a crossed feeding belt (16) is arranged at the discharging end of the conveying belt; pre-pressing pipelines (3) are arranged at the two ends of the crossed feeding belt correspondingly; a material supplementing bin (8) is arranged in the side direction of each pre-pressing pipeline; a first conveying roller (7) is arranged below each pre-pressing pipeline (3); a tobacco box (6) is positioned on the first conveying roller (7); a second conveying roller (7a) is arranged below the material supplementing bin; a rail (14) is arranged between the first conveying roller and the second conveying roller; a transfer trolley (12) is arranged on the rail; the pre-pressed tobacco box is conveyed from the first conveying roller to the second conveying roller through the transfer trolley; an electronic scale (17) is arranged on the second conveying roller. The automatic weighing and material supplementing device for the tobacco flake finished products can automatically weigh tobaccos in the tobacco box and can automatically supplement materials for the tobacco box so as to reduce the labor cost, improve the boxing and bundling efficiency, shorten the boxing time and solve the quality problem caused by tobacco water and temperature loss caused by too long boxing time.

The invention provides a tobacco water-holding and heat-preserving cultivation method, and particularly a cultivation mode in which a water-holding and heat-preserving ditch is formed on a ridge body to collect naturally falling water, increase soil moisture content inside the ridge and increase heat storage capability of the ridge body on the basis on the conventional tobacco ridging and mulching-film cultivation. The method can solve the problems of tobacco production caused by periodic drought, and has the characteristics of being simple to operate and easy to generalize.

The present disclosure provides an aerosol generating component containing a substrate impregnated with one or more aerosol forming materials, the substrate including a cellulosic material substantially free of sulfur compounds, and further including one or more of a tobacco pulp, an aqueous tobacco extract, a filler, and a binder. Further provided is an aerosol delivery device including the aerosol generating component. Such devices utilize electrically generated heat or combustible ignition sources to heat the aerosol forming materials, providing an inhalable substance in the form of an aerosol.

The invention discloses a process gas temperature control method for a superheated steam drier. The process gas temperature control method comprises the following steps: setting standard values of incoming tobacco water, process gas temperature and combustion furnace temperature as d<standard>, c<standard1> and c<standard2> respectively, and detecting real-time values of the incoming tobacco water, process gas temperature and combustion furnace temperature as d<real>, c<real 1> and c<real 2> respectively; respectively performing real-time comparison on the c<real 1> and c<standard1>, d<real> and d<standard> and c<real 2> and c<standard2>, and outputting the bypass air damper opening degree y1, ywater and ytemperature by virtue of a temperature PID (Proportion Integration Differentiation) controller, a water compensation module and a temperature compensation module in real time; and calculating a bypass air damper opening set value y according to a formula of y=y1+ywater+ytemperature, outputting the set value to a bypass air damper locator to be used for controlling the real-time opening of the bypass air damper. According to the method, the incoming tobacco water and the combustionfurnace temperature can be pre-judged, the set value of the bypass air damper opening can be corrected in advance, and the process gas temperature is rapidly and accurately adjusted.

The invention relates to a method for preparing a high-stability tobacco natural flavor extract. The method comprises the following steps: extracting out essential oil easy to volatile in tobacco by using a vapor distillation process, further filtering a tobacco water extract, performing vacuum concentration, returning the extracted essential oil into the concentration liquid, adding concentratedchick-pea yellow slurry, performing high-intensity homogenization emulsion so as to obtain an oil-in-water emulsion, enabling flavor essential oil to be uniformly distributed in a flavor concentrationliquid in a nano oil droplet manner, and increasing the volume ratio of emulsion-system tobacco essential oil, so as to prepare a semisolid tobacco extract product. By adopting the technical scheme,the tobacco essential oil and the extraction concentration liquid are combined and emulsified, and the flavor of the extract is completely derived from a tobacco raw material, so that the flavor is natural; and in addition, as the tobacco essential oil easy to volatile is wrapped in an emulsion water phase in the oil droplet manner, volatilization loss of the flavor of the tobacco flavor extract in storage and use can be effectively reduced.

The invention relates to a method for reducing the loss of fragrant substances of reconstructed tobaccos in the concentration process. The method comprises the following steps of: concentrating a tobacco water extracting solution obtained by an extraction working section in the process of producing the reconstructed tobaccos by a papermaking method; mixing polyhydric alcohol and the tobacco water extracting solution in a weight ratio of 1:10-1:100 uniformly in a concentration working section, and adding the mixture into concentration equipment; and concentrating at concentration temperature of between 45 and 100 DEG C under the concentration condition that the vacuum degree is 0.04 to 0.08 MPa until tobacco paste of which the density is 1.220+ / -0.005 is obtained. By the method, the quality of coating liquid can be improved effectively, so that the quality of the reconstructed tobaccos is improved, and tobacco discarded raw materials can be utilized fully and reasonably.

The invention discloses a method for measuring formaldehyde, acetaldehyde and acetone in tobacco water-based adhesive by derivative-headspace gas chromatography, which comprises the following steps: (1) dispersing tobacco water-based adhesive in deionized water proportionally, shaking for extraction, centrifuging, collecting supernatant, adding into a headspace bottle, adding a derivatization reagent (water solution of pentafluorobenzyl hydroxylamine) proportionally, performing gland sealing, mixing, and performing headspace gas chromatography; and (2) drawing a standard curve of chromatogram peak area of a target analyte vs. concentration thereof, introducing the chromatographic results obtained in step (1) into the corresponding standard curve, and calculating the concentrations of formaldehyde, acetaldehyde and acetone in tobacco water-based adhesive. The invention establishes a simple and rapid method for accurately measuring formaldehyde, acetaldehyde and acetone in tobacco water-based adhesive by derivative-headspace gas chromatography. The method of the invention is simple, rapid and accurate, realizes automation, and does not consume organic solvent.

The invention relates to a tobacco water planting module and a water planting method. The water planting module includes multiple water planting racks, multiple layers of planting grooves formed in the water planting racks, planting plates on the planting grooves and a nutrient liquid barrel communicated with liquid inlets and liquid outlets of the planting grooves in each layer; the periphery ofeach planting plate is wider than the corresponding planting groove, multiple planting holes are formed in each planting plate, each planting groove is filled with nutrient liquid, roots of tobacco seedlings penetrate through the planting holes to be in contact with the nutrient liquid, one end of the nutrient liquid barrel is communicated with the liquid inlet of the planting groove in the top layer of the water planting racks, and the other end of the nutrient liquid barrel is communicated with the liquid outlet of the planting groove in the lowest layer. A pump is arranged on a pipeline communicated with the liquid inlets of the planting grooves, and the liquid outlets and liquid inlets of every two adjacent planting grooves are communicated with each other; multiple LED lamps and microfans are arranged on the upper portions of the planting grooves in all layers; the tobacco water planting module also includes a monitoring device, and the monitoring device detects the temperature,humidity and carbon dioxide concentration of the water planting module in real time. The water planting module occupies a small floor space, is high in spatial utilization rate, capable of achieving cyclic utilization of water and circular liquid supply and small in water consumption, increases the survival rate of the tobacco seedlings and the growth ratio of plants, and ensures high quality andyield of tobacco.

The invention discloses a preparation method of a wheat straw type tobacco water-raised seedling substrate. The preparation method comprises the following steps: spraying water to a straw pile body firstly, wherein the mass ratio of the water to straw is (0.8-1.2) to 1; dissolving urea powder accounting for 1-2 percent of the total mass of the straw into water, and spraying the dissolved urea powder into the straw pile body; taking 0.5 billion cfu / g of mixed bacterial agent of aspergillus niger and bacillus licheniformis, uniformly spraying the mixed bacterial agent into the straw pile body, wherein the mixed bacterial agent accounts for 0.1-0.5 percent of the total mass of the straw; scattering bean cake powder accounting for 2-4 percent of the total mass of the straw into the straw pile body to be fermented, and turning the pile for 45-60 days every 3-6 days to obtain a wheat straw fermentation broth; and mixing the following components in parts by weight: 50-80 parts of the wheat straw fermentation broth, 5-15 parts of vermiculite, 3-12 parts of perlite, 15-25 parts of carbonized rice hulls and 10-20 parts of fly ash to obtain the wheat straw type tobacco water-raised seedling substrate. The preparation method is simple in step, available in raw materials and low in cost. The seedling substrate is short in seedling time, high in seedling emergence rate and good in growth vigor of tobacco seedlings in the seedling formation period.

The invention provides a method for improving the sensory quality of reconstituted tobaccos through biotransformation. The method comprises the following steps that 1, strain activation is performed: bacillus methylotrophicus (VJ4-1) is inoculated to an oblique-plane culture medium and then is inoculated to a seed culture medium, and a seed culture solution is prepared through transfer; 2, composite biotransformation pretreatment is performed: in a reconstituted tobacco extraction process, the seed culture medium in the step 1 is inoculated to a reconstituted tobacco water solution, penicillium citrinum feruloyl esterase, xylanase, glucose oxidase, catalase, phenol oxidase and other complex enzymes are added, stirring and even mixing are performed, and a reconstituted tobacco biotransformation solution is obtained through fermentation; 3, the reconstituted tobaccos are produced through a conventional reconstituted tobacco process, the temperature exceed 75 DEG C in the process, the enzymes and bacteria are inactivated, and the reconstituted tobaccos are obtained through rolling. The produced reconstituted tobaccos with the aroma quality improved by adopting a biotechnology have good aroma with a slight milk flavor, the irritation is reduced, green miscellaneous smell is decreased, and the sensory quality of the reconstituted tobaccos is improved.

The invention relates to a tea tree planting method. The tea tree planting method comprises the following steps of (1) land selection, (2) deep ploughing and fertilization, (3) furrowing, (4) tee seedling transplanting, (5) fertilization in a tea garden, (6) pest control and (7) tea tree pruning. According to the high-elevation tea tree planting method, good growth conditions are provided for teatrees, and the water and soil conservation effect of the tea garden is good; meanwhile, bio-organic fertilizers are applied, so that non-pollution effects are achieved, and moreover, effective hygienical components which are healthy for the human body can be formed in the growth process of the tea trees; tobacco water is utilized to prevent and expel pests, no pesticides are used, a natural plantpest control ecological chain prevention environment is built, and the generation of diseases and pests of the tea trees is prevented. The tea trees planted by using the method are good in growth vigor, and the produced high-elevation tea is good in quality and has the advantages of being mellow in taste, thick in flavor and bright in color of tea water.

The invention discloses a test method for pH of a tobacco water extract. The test method of the invention comprises the following steps: (1) putting 5.0g of tobacco powder in a conical flask and adding 50ml of distilled water; (2) putting the conical flask in an oscillator and mechanically oscillating for 0.5h; and (3) after the oscillation is finished, pouring the tobacco water extract in a glass beaker, carrying out test by directly using a pH glass electrode without putting aside the tobacco water extract. By using the method of the invention to test the pH of the tobacco water extract and under the condition that the accuracy of the measurement result is ensured, the operation steps are simplified, testing time is saved, and synchronously, the conditions, such as testing temperature, testing time and the like, are optimized, the interference of conditional factors to the test result is reduced, and the accuracy of the measurement result is further improved.

The invention relates to an electromagnetic cut tobacco drying device, and belongs to the technical field of tobacco processing. The device comprises a cut tobacco drying roller, a supporting roller,a roller outer ring gear ring, a drive motor, a control system, an electromagnetic heating device and a support. The two ends of the top of the support are provided with supporting rollers arranged inParis, the two ends of the cut tobacco drying roller are arranged on the supporting roller through an outer ring, one end of the cut tobacco drying roller is provided with the roller outer ring gearring, a drive gear of the drive motor installed on the support is meshed with the roller outer ring gear ring, the electromagnetic heating device is installed below the cut tobacco drying roller, andthe electromagnetic heating device, the drive motor and the control system are connected. The device has the advantages that the structure is simple, controllability is high, the device can be connected with the intelligent control system, meanwhile, the device is used for removing cut tobacco water, heat energy conversion by means of steam is avoided, no boiler steam system needs to be built independently in the using process, the heat efficiency is high, emission is reduced, the environment-friendly requirement for energy conservation and emission reduction is met, and efficient and fined process control is achieved.

The invention discloses a nicotine selectively degrading bacterium construction method and application of nicotine selectively degrading bacteria in a waste tobacco water extract. Pseudomonas sp.JY-Qis used as an original bacterial strain, through whole genome information analysis of the Pseudomonas sp.JY-Q, the following five target genes are determined, knockout vectors of the target genes areconstructed, by means of a thermal transferring method, the knockout vectors are transferred into an escherichia coli deleted bacterial strain WM3064, and by means of Kanamycin resistance genes on thevectors, recons of first exchange are screened out; after the bacterial strain is subjected to overnight propagation, by means of anti-screen marker SacB genes carried by the vectors, recons, namelythe target genes, of secondary exchange fall off along with plasmids which are integrated into a genome to achieve seamless gene knockout until all the target genes are knocked out. The phenotypic difference between the bacterial strain obtained through the method and a wild type JY-Q mainly comprises growth difference and nicotine and glucose degrading difference.