WO2016096543A1 - Pasteurisation de tabac à coupe fine - Google Patents

Pasteurisation de tabac à coupe fine Download PDF

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Publication number
WO2016096543A1
WO2016096543A1 PCT/EP2015/079018 EP2015079018W WO2016096543A1 WO 2016096543 A1 WO2016096543 A1 WO 2016096543A1 EP 2015079018 W EP2015079018 W EP 2015079018W WO 2016096543 A1 WO2016096543 A1 WO 2016096543A1
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WO
WIPO (PCT)
Prior art keywords
tobacco
fine cut
cut tobacco
pasteurised
fine
Prior art date
Application number
PCT/EP2015/079018
Other languages
English (en)
Inventor
Sander VAN HATTEM
Philipp NEISS
Original Assignee
Philip Morris Products S.A.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philip Morris Products S.A. filed Critical Philip Morris Products S.A.
Priority to US15/531,071 priority Critical patent/US20200178593A1/en
Priority to CN201580063660.7A priority patent/CN106998786A/zh
Priority to AU2015366598A priority patent/AU2015366598A1/en
Priority to EP15807867.5A priority patent/EP3232826A1/fr
Priority to MX2017007751A priority patent/MX2017007751A/es
Publication of WO2016096543A1 publication Critical patent/WO2016096543A1/fr

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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
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/183—Treatment of tobacco products or tobacco substitutes sterilization, preservation or biological decontamination
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B13/00—Tobacco for pipes, for cigars, e.g. cigar inserts, or for cigarettes; Chewing tobacco; Snuff
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/22—Treatment of tobacco products or tobacco substitutes by application of electric or wave energy or particle radiation
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F23/00—Cases for tobacco, snuff, or chewing tobacco
    • A24F23/02—Tobacco pouches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
    • B65B63/08—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for heating or cooling articles or materials to facilitate packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/62—Containers, packaging elements or packages, specially adapted for particular articles or materials for stacks of articles; for special arrangements of groups of articles

Definitions

  • the present invention relates to a product containing pasteurised fine cut tobacco, and a method for making a product containing pasteurised fine cut tobacco.
  • Tobacco for self-assembly smoking articles typically has a higher moisture content than that of the tobacco material in pre-manufactured cigarettes.
  • tobacco is an organic material, it can be subject to deterioration by microorganisms, such as mould. In moderate climates, mould spores are naturally present in the environment and the mould growth is favoured by moisture. Mould growth is therefore of particular concern for tobacco products having a high moisture content, such as fine cut tobacco used for self- assembly smoking articles.
  • preservatives and/or humectants have been included in the tobacco.
  • preservatives or humectants may not be desirable for various reasons. For example, they may provide adverse flavour or burning properties for the fine cut tobacco.
  • WO 2009/056609, US 2009/025738 and WO 2009/05661 1 each describe methods for heating smokeless products not suitable for combustion, which contain ground particles of tobacco, such that they become pasteurised.
  • the inventors have appreciated that if the cut width of the fine cut tobacco is reduced to a cut width below 0.5 mm then the overall surface area of the tobacco will increase, thereby making more surface area available for mould growth.
  • certain types of tobacco such as flue cured tobacco, contain a particular level of sugar, which, under moist conditions, can promote mould growth in the tobacco.
  • a method of making a product containing pasteurised fine cut tobacco comprising arranging fine cut tobacco having a cut width of less than 0.5 mm and a moisture content of at least 18 percent by weight, and heating the fine cut tobacco such that the tobacco is pasteurised.
  • a product containing pasteurised fine cut tobacco comprising a closed package; and pasteurised fine cut tobacco within the closed container, the pasteurised fine cut tobacco having a cut width of less than 0.5 mm and a moisture content of at least 18 percent by weight, and a colony forming unit (CFU) value of less than 2 log-io colony forming units per gram.
  • CFU colony forming unit
  • tobacco leaves are typically fed to a cutter with the leaves oriented such that their outer surfaces are transverse to the direction of cut. This means that the cut is made through the structure of the leaf, and therefore exposes the internal cell structure of the leaf as a surface of the fine cut strip of tobacco. These cut internal structures are rough and jagged compared to the smooth leaf surface. This provides additional microstructure on a surface of the fine cut strip of tobacco, which has the effect of increasing the surface area available to capture mould spores from the environment, and also increases the likelihood of mould spores developing within the fine cracks in the structure.
  • tobacco having a cut width of less than 0.5 mm will have an increased amount of exposed microstructure compared to fine cut tobacco having higher cut widths, such as 0.5 mm to 0.9 mm.
  • the inventors of the present invention have further appreciated that this increased amount of exposed microstructure has several consequences for pasteurisation.
  • the exposed microstructure provides more surface area per gram of tobacco than the smooth and waxy outer leaf surface. There is therefore more surface area for mould to grow on for tobacco having a cut width of less than 0.5 mm compared to prior art fine cut tobacco having higher cut widths, such as 0.5 mm to 0.9 mm.
  • the exposed microstructure is less effective at retaining water than the non-cut outer leaf surface of the tobacco. Therefore, if the amount of exposed microstructure is increased by having a cut width of less than 0.5 mm, then the fine cut tobacco will tend to be less effective at retaining internal water. This can cause the tobacco to have a higher water activity level and therefore be more susceptible to mould growth.
  • sugars are more readily available from the exposed microstructure than from the smooth and waxy leaf surface.
  • sugars can act as nutrient source for mould, and therefore the increased amount of exposed sugar created by having cut widths of less than 0.5 mm can also promote mould growth.
  • the inventors of the present invention have found that by heating the tobacco under certain conditions, a product containing pasteurised fine cut tobacco having a cut width of less than 0.5 mm can be produced, without adversely affect its flavour, whilst also remain substantially mould free for a sustained period of time, such as at least 6 months.
  • the present inventors have therefore successfully produced a product containing pasteurised fine cut tobacco, where the product comprises a closed container with pasteurised fine cut tobacco within the closed container, and the pasteurised fine cut tobacco has a cut width of less than 0.5 mm and a colony forming unit (CFU) value of less than 2 log-io colony forming units per gram.
  • CFU colony forming unit
  • the pasteurised fine cut tobacco of the invention can have a colony forming unit (CFU) value of less than 2 log-io colony forming units per gram, up to 6 months after the tobacco has been pasteurised.
  • the inventors believe that this can be achieved by ensuring that the fine cut tobacco has a moisture content of at least 18 percent by weight.
  • the inventors have identified that the combination of a cut width of below 0.5 mm and a moisture content of above 18 percent permits the strands of fine cut tobacco to reside more closely to one another, and thereby lower the filling power of the tobacco. This means that less gas will tend to be trapped amongst the tobacco strands during pasteurisation, thereby creating less of an insulating effect.
  • This can have several advantageous effects. For example, it can reduce the time that it takes for the tobacco to reach the intended pasteurisation temperature, and therefore can improve the efficiency of the treatment process. More tobacco could therefore be pasteurised within a given time frame. Alternatively or additionally, more time can be available for maintaining the tobacco at the intended pasteurisation temperature, if desired. Reducing the amount of gas trapped amongst the tobacco strands can also reduce the chances of hot or cold spots forming amongst the fine cut tobacco.
  • the fine cut tobacco has a filling power of less than 5 cubic centimetres/g, more preferably less than 4 cubic centimetres/g.
  • the filling power of fine cut tobacco is normally expressed as "Cylinder Volume (CV)".
  • CV Cylinder Volume
  • a sample of fine cut tobacco should be placed in a cylindrical container and subjected to a set load for a set duration. This test is performed using a known DD60 Densimeter device (manufactured and made commercially available by Heinr. Borgwaldt GmbH, Germany). The device is fitted with a measuring head for fine cut tobacco and a cylindrical tobacco container. The tobacco is placed within the tobacco container and the measuring head is brought into contact with the tobacco sample. The measuring head then subjects the tobacco to a load of 2 kg for a duration of 30 seconds. The height (h) of the tobacco sample after the loading time is measured. The cylinder volume is then calculated using the following formula:
  • CV is the cylinder volume in cubic centimetre/g
  • r is the radius of the cylinder container
  • h is the height in millimetres of the sample in the container after the load has been applied for 30 seconds
  • SW is the weight of the tobacco sample
  • 10 is a factor for converting "h” from millimetres to centimetres.
  • the fine cut tobacco is heated to a pasteurisation temperature of at least 75 degrees Celsius, even more preferably at least 80 degrees Celsius.
  • the fine cut tobacco is heated to a pasteurisation temperature of less than 95 degrees Celsius, even more preferably less than 90 degrees Celsius.
  • the fine cut tobacco is heated to a pasteurisation temperature of between 75 and 95 degrees Celsius, more preferably between 80 and 90 degrees Celsius.
  • the fine cut tobacco is heated to a pasteurisation temperature of about 85 degrees Celsius. Below such temperatures, it has been identified that the tobacco may not be effectively pasteurised for it to remain substantially mould free for a sustained period of time, such as at least 6 months. Above such temperatures, it is believed that the flavour of the tobacco can be adversely affected by the heating.
  • the tobacco is heated such that it remains substantially at a pasteurisation temperature for a duration of at least 3 minutes, more preferably at least 4 minutes.
  • the tobacco is heated such that it remains substantially at a pasteurisation temperature for a duration of less than 7 minutes, more preferably less than 6 minutes.
  • the tobacco is heated such that it remains substantially at a pasteurisation temperature for a duration of between 3 minutes and 7 minutes, more preferably between 4 minutes and 6 minutes, and even more preferably for about 5 minutes.
  • the fine cut tobacco has a water activity level of at least 0.7 Aw after pasteurisation.
  • the fine cut tobacco has a water activity level of less than 0.8 Aw after pasteurisation.
  • Such relatively high water activity levels can advantageously allow the fine cut tobacco to be sufficiently flexible to facilitate manufacture, and handling by a consumer, and in particular, the self-assembly of a smoking article containing the fine cut tobacco.
  • the high water activity level is particularly beneficial for the present invention where the cut width is less than 0.5mm as the strands of tobacco are more delicate and brittle at this cut width.
  • the fine cut tobacco is free from preservatives.
  • Possible preservatives used in tobacco products may comprise benzoic acid, sodium propionate, natamycin, non-anoic acid and salts thereof.
  • Additives may be added to the tobacco during manufacturing, such as sugar, cocoa, coconut powder.
  • Humectants like for example, glycerin, propylene glycol and invert sugar and others may also be added.
  • the fine cut tobacco is free from humectants.
  • the fine cut tobacco comprises at least 5 percent by dry weight of reducing sugars, more preferably at least 15 percent by dry weight of reducing sugars.
  • the fine cut tobacco comprises less than 25 percent by dry weight of reducing sugars, more preferably less than 23 percent by dry weight of reducing sugars.
  • dry weight is used herein to refer to the weight of the fine cut tobacco after all moisture has been removed from the fine cut tobacco.
  • Flue cured tobacco typically has a higher sugar content than other types of tobacco, such as burley tobacco.
  • the fine cut tobacco comprises at least 40 percent by weight of flue cured fine cut tobacco, more preferably at least 60 percent by weight of flue cured fine cut tobacco.
  • the fine cut tobacco comprises less than 80 percent by weight of flue cured fine cut tobacco.
  • the present invention applies to fine cut tobacco having a cut width of less than 0.5 mm.
  • the fine cut tobacco comprises elongate strips or strands of tobacco that have been cut at a predetermined width.
  • the length of the strips typically range from 2 cm to 10 cm.
  • the fine cut tobacco has a cut width of at least 0.1 mm, even more preferably at least 0.2 mm.
  • the fine cut tobacco has a cut width of less than 0.4 mm.
  • the fine cut tobacco has a cut width of between 0.1 mm and 0.4 mm, or between 0.2 mm and 0.4 mm.
  • the fine cut tobacco is intended for use in combustible smoking articles, for example self-assembly smoking articles, such as roll-your-own or make-your own smoking articles.
  • the present invention applies to fine cut tobacco having a moisture content of at least 18 percent by weight.
  • the moisture content of the tobacco is at least 20 percent by weight, more preferably at least 22 percent by weight.
  • the moisture content of the tobacco is less than 27 percent by weight, more preferably less than 25 percent by weight.
  • the moisture content of the tobacco is between 18 and 25 percent by weight, more preferably between 20 and 25 percent by weight and even more preferably between 20 and 23 percent by weight. It is thought that such preferred moisture content ranges advantageously allow the fine cut tobacco to be sufficiently moist for rolling and handling purposes, without being too moist for combustion or too moist for pasteurisation to be effective in sufficiently preventing or inhibiting mould growth. It is also thought that this permits the strands of fine cut tobacco to reside more closely to one another, and thereby lower the filling power of the tobacco
  • the desired tobacco moisture content is typically set during tobacco processing comprising the addition of water and drying.
  • the cut width is particularly important for fine cut tobacco that can be used for self-assembly smoking articles, such as roll-your-own or make-your-own smoking articles, which requires elongate strips or strands of fine cut tobacco in a certain size in order to prevent the tobacco from falling out at the open end of the smoking article.
  • the tobacco is mostly ground or sometimes finely cut. However, this typically results into a sort of dust that then creates the typical snus pulp filled in the sachets for oral consumption.
  • snuff is provided as a ground or finely cut powder.
  • the closed package used in the present invention is a retail package and suitable for product distribution and sale.
  • the method according to the invention eliminates the need for further processing or handling the tobacco after the pasteurization step, the tobacco is well protected from environmental factors which could adversely impact the quality of the tobacco before use, for example, the ingress of microorganisms.
  • the closed package is substantially air-tight before use.
  • the moisture content of the fine cut tobacco remains substantially constant between packaging and use.
  • the closed package is a pouch comprising a pocket that contains the fine cut tobacco and a flap configured to fold over the pocket.
  • the closed package is preferably a stand up bag formed of flexible material, and the bag comprises a base and at least two side walls.
  • the closed package is preferably a rigid tin or container.
  • the closed package is designed to withstand the pasteurisation conditions of the present invention, so that the fine cut tobacco can be pasteurised within the closed package if desired.
  • at least part of the closed package is made of a laminate which provides a moisture barrier and is impermeable to microorganisms. Further, the closed package is preferably permeable to microwaves.
  • the fine cut tobacco is sealed in the closed package.
  • the packaging material is plastic, metal, metalized or cardboard laminates or a combination thereof.
  • the closed package is made of a laminate wherein at least one layer provides a moisture barrier.
  • the closed package may provide a moisture barrier, without being made from a laminate material. This allows, that in particular during the heating, no moisture will escape the closed package, such that the moisture content in the tobacco will remain constant. Same benefit is also provided during the latter transport and while the closed package is kept on a shelf for storage and sale, as no evaporation of moisture from the fine cut tobacco to the outside of the closed package can occur.
  • the closed package is preferably suitable for product sale to the consumer.
  • the closed package has a weight of 5 g to 500 g. This is a common range for retail tobacco packages. In particular, pouches with around 10 g up to 100 g and closed boxes with around 50 g up to 150 g of tobacco may be provided as the closed package according to the invention.
  • the packaged fine-cut tobacco according to the invention may be used for self-assembly smoking articles, such as make-your-own or roll-your-own products, wherein it has been pasteurized to provide enhanced shelf-life and improved sensory properties.
  • the heating is carried out by subjecting the fine cut tobacco to a heating medium.
  • the heating medium may be water, steam, air, an inert gas, or any combination thereof.
  • the heating medium may be a mixture of water micro-droplets and saturated steam.
  • the heating medium may be a mixture of water, superheated steam and air.
  • the heating medium may be a mixture of water, steam and air.
  • a package according to the invention may be further overwrapped by a water proof outer wrapper to prevent damage to the package that could be otherwise caused by the heating medium, such as water.
  • a water proof outer wrapper to prevent damage to the package that could be otherwise caused by the heating medium, such as water.
  • the package comprises print or cardboard or both.
  • the fine cut tobacco is heated by means of radiation, more preferably microwave radiation.
  • radiation more preferably microwave radiation.
  • the fine cut tobacco has a high moisture content of at least 18 percent by weigh, and so the microwave radiation can more quickly heat up the fine cut tobacco. This can reduce the amount of time required for the tobacco to reach a pasteurisation temperature.
  • the microwave power applied to the tobacco packages may be controlled based on the temperature measured at the centre of the packages, for example by means of an infrared temperature sensor, such as an infrared camera.
  • the position of the fine cut tobacco may be controlled during pasteurization relative to the position of the microwave heating apertures.
  • the pressure during pasteurization is preferably controlled in dependency of the temperature of the treatment and the heating medium outside the package or pasteurization medium inside the package used.
  • the temperature of the tobacco is monitored during the heating step. This can be obtained by monitoring the temperature around the fine cut tobacco, and estimating from this temperature the temperature of the tobacco. Furthermore, the temperature of the tobacco may be measured by infrared sensors. The monitoring of the temperature allows as well controlling of the temperature during the heating step.
  • a cooling step may be carried out by subjecting the fine cut tobacco to a cooling medium, such as cold air, water or inert gas. Gaseous cooling or heating media are preferred over liquid heating media.
  • a cooling medium such as cold air, water or inert gas. Gaseous cooling or heating media are preferred over liquid heating media.
  • Figure 1 shows an exemplary manufacturing line for the method according to the invention.
  • Figure 2 shows a Graph representing plots of mould levels over a 6 month storage period.
  • the present invention relates to a method for pasteurization of tobacco, in particular fine-cut tobacco for roll-your-own and make-your-own products.
  • tobacco leaves or tobacco leaf pieces will be processed in a common manner, including conditioning, sorting and separation of unwanted material. Then, the leaves or leaf pieces are cut into fine cut tobacco with a cut width of less than 0.5mm, and water and additional ingredients such as additives are optionally added. Finally, the tobacco is dried to a certain moisture content, in particular more than 18 weight percent.
  • the tobacco 1 is then filled in a package 2 in a packing station 3.
  • the tobacco may instead be pasteurised in bulk, for example by conveying unpackaged tobacco through a heating station for pasteurisation, and then subsequently packaging the tobacco after the heating station.
  • the packing station 3 further provides that the package 2 is closed, such that it is hermetically sealed.
  • the package 2 is a flexible pouch, which will be heat sealed to be closed.
  • the closure of the package 2 can be designed such that is openable by a consumer, without the pouch being destroyed.
  • the package 2 is adapted to be reclosable.
  • the package 2 may be provided with adhesive to be closed such that it is hermetically sealed.
  • the package 2 may be heat sealed on some of the sides, while a reclosable opening is only provided with adhesive.
  • the adhesive provided on the opening of the package 2 is in particular non-permanent adhesive allowing as well to reclose the package substantially airtight.
  • the closed packages 2 are transported by a conveyance means 4, for example a conveyance belt, to the heating station 5.
  • the packages 2 are heated such that the tobacco 1 therein is pasteurized.
  • the packages 2 will be heated until the fine cut tobacco reaches a pasteurisation temperature of between 75 to 95 degrees Celsius.
  • a pasteurisation temperature of between 75 to 95 degrees Celsius.
  • the packages are then subjected to this temperature for a duration of 2 to 7 minutes.
  • Sensors may be provided for determining when the packages are at the pasteurisation temperature.
  • the heating is carried out by using a heat medium, which in the present embodiment is hot air.
  • the heating station 5 may be an oven with a hot air fan.
  • a conveyance means extends through the heating station 5.
  • the air may be filter or purified before the pasteurised tobacco is subjected to it as a heating medium.
  • the tobacco 1 in the core of the package 2 reaches the required target temperature, such that all tobacco 1 in the package 2 is pasteurized. As the package 2 is sealed and is made of moisture proof material, the moisture in the tobacco cannot escape the package 2, and is, thus, held at a constant level.
  • the temperature of the tobacco 1 is preferably monitored, either directly or indirectly by monitoring the temperature of the package 2.
  • the heat that needs to be applied will depend on the type and size of the package 2, while the temperature of the tobacco 1 is used as an indication of the pasteurization process.
  • the presence of microorganisms such as mould is reduced in the tobacco 1 , so that the tobacco 1 in the packages 2 can have a longer shelf life.
  • the closed packages 2 are further transported to a cooling station 6, in which a cooling step is carried out.
  • a conveyance means extends through the cooling station 6.
  • ambient or cold air is used, to cool the product down to ambient temperature or to a temperature below ambient temperature.
  • the package 2 is cooled down to 2 to 10 degrees Celsius, and is subsequently kept at this temperature during further transport until it reaches the point of sale such that the shelf life is increased.
  • Typical shelf life for tobacco treated with the aforementioned method is at least 6 months.
  • Table 1 shows the cut width, moisture content and added humectant values for five different samples of fine cut tobacco that were subjected to pasteurisation trials.
  • each sample was divided into two sub-categories; inoculated and non-inoculated.
  • the inoculated samples were ones for which the tobacco sample was first inoculated with mould, by a dry rubbing technique where the tobacco was rubbed on the surface of agar plates containing cultured moulds of P. chrysogenum and A. (Eurotium) amstelodami.
  • each inoculated and non-inoculated sample was then divided into 3 further subcategories for different pasteurisation conditions. These were pasteurisation at 70 degrees Celsius for 5 minutes, pasteurisation at 75 degrees Celsius for 5 minutes and pasteurisation at 85 degrees Celsius for 5 minutes.
  • the reduction in mould level for each category is shown in Table 1 below. The shaded cells indicate the samples for which the mould level was reduced below the limit of detection (approximately ⁇ 0.5 log colony forming units per gram).
  • the mould level in all samples with cut widths of greater than or equal to 0.5 mm could be reduced below the limit of detection through pasteurisation at temperatures of 75 degrees Celsius or more.
  • the mould level in samples 3 and 6 i.e. ones having a cut width of less than 0.5 mm
  • a pasteurisation temperature of greater than 75 degrees Celsius was needed to reduce the mould level in samples 1 , 4 and 7 below the limit of detection.
  • sample 7 behaved differently from the other samples.
  • the inoculated and non-inoculated categories of sample 7 that were heated for 5 minutes at 70 degrees Celsius or 75 degrees Celsius went mouldy between 2 and 4 months of storage.
  • sample 7 was heated at 85 degrees Celsius for 5 minutes, both its inoculated and non-inoculated versions remained mould free for the full duration of the 6 months storage.
  • Sample 7 was the only sample that did not contain added humectant, meaning it was likely to contain more free water on its surface.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Toxicology (AREA)
  • Manufacture Of Tobacco Products (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un produit contenant du tabac à coupe fine pasteurisé pour utilisation en tant que combustible. Le procédé comprend l'agencement de tabac à coupe fine (1) comprenant des bandes allongées de tabac ayant une largeur de coupe inférieure à 0,5 mm et une teneur en humidité d'au moins 18 pour cent en poids, et le chauffage du tabac à coupe fine (1) de sorte que le tabac soit pasteurisé. L'invention concerne en outre un produit contenant du tabac à coupe fine pasteurisé (1) pour utilisation en tant que combustible. Le produit comprend un emballage fermé (2) ; et du tabac à coupe fine pasteurisé (1) à l'intérieur de l'emballage fermé (2), le tabac à coupe fine pasteurisé (1) ayant une largeur de coupe inférieure à 0,5 mm et une teneur en humidité d'au moins 18 pour cent en poids, et une valeur d'unités formant des colonies (UFC) inférieure à 2 log10 unités formant des colonies par gramme.
PCT/EP2015/079018 2014-12-17 2015-12-08 Pasteurisation de tabac à coupe fine WO2016096543A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US15/531,071 US20200178593A1 (en) 2014-12-17 2015-12-08 Pasteurisation of fine cut tobacco
CN201580063660.7A CN106998786A (zh) 2014-12-17 2015-12-08 细切烟草的巴氏灭菌
AU2015366598A AU2015366598A1 (en) 2014-12-17 2015-12-08 Pasteurisation of fine cut tobacco
EP15807867.5A EP3232826A1 (fr) 2014-12-17 2015-12-08 Pasteurisation de tabac à coupe fine
MX2017007751A MX2017007751A (es) 2014-12-17 2015-12-08 Pasteurizacion de tabaco cortado fino.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14198543 2014-12-17
EP14198543.2 2014-12-17

Publications (1)

Publication Number Publication Date
WO2016096543A1 true WO2016096543A1 (fr) 2016-06-23

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PCT/EP2015/079018 WO2016096543A1 (fr) 2014-12-17 2015-12-08 Pasteurisation de tabac à coupe fine

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US (1) US20200178593A1 (fr)
EP (1) EP3232826A1 (fr)
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US20200178593A1 (en) 2020-06-11
EP3232826A1 (fr) 2017-10-25

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