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WO2007124945A1 - Procédé et dispositif pour traiter des semences au moyen d'un plasma physique sous pression atmosphérique - Google Patents

Procédé et dispositif pour traiter des semences au moyen d'un plasma physique sous pression atmosphérique Download PDF

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Publication number
WO2007124945A1
WO2007124945A1 PCT/EP2007/003815 EP2007003815W WO2007124945A1 WO 2007124945 A1 WO2007124945 A1 WO 2007124945A1 EP 2007003815 W EP2007003815 W EP 2007003815W WO 2007124945 A1 WO2007124945 A1 WO 2007124945A1
Authority
WO
WIPO (PCT)
Prior art keywords
seed
plasma
treatment
physical
atmospheric pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2007/003815
Other languages
German (de)
English (en)
Inventor
Wolfgang Viöl
Georg Avramidis
Richard Wascher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fachhochschule Hildesheim Holzminden Gottingen
Original Assignee
Fachhochschule Hildesheim Holzminden Gottingen
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 Fachhochschule Hildesheim Holzminden Gottingen filed Critical Fachhochschule Hildesheim Holzminden Gottingen
Publication of WO2007124945A1 publication Critical patent/WO2007124945A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
    • A01C1/08—Immunising seed
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/70—Preservation of foods or foodstuffs, in general by treatment with chemicals
    • A23B2/704—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/70—Preservation of foods or foodstuffs, in general by treatment with chemicals
    • A23B2/704—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A23B2/721—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere comprising other gases in addition to CO2, N2, O2 or H2O
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B9/00—Preservation of edible seeds, e.g. cereals
    • A23B9/16—Preserving with chemicals
    • A23B9/18—Preserving with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B9/00—Preservation of edible seeds, e.g. cereals
    • A23B9/16—Preserving with chemicals
    • A23B9/18—Preserving with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A23B9/22—Preserving with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere comprising other gases in addition to CO2, N2, O2 or H2O
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/087—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J19/088—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/22—Stationary reactors having moving elements inside in the form of endless belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0871—Heating or cooling of the reactor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0873—Materials to be treated
    • B01J2219/0879—Solid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0894—Processes carried out in the presence of a plasma

Definitions

  • the invention relates to a method for treating seeds with a physical plasma at atmospheric pressure and an apparatus for carrying out this method, with a treatment chamber in which atmospheric pressure prevails and through which the seed passes, and with a plasma source containing the physical plasma in provides the treatment room.
  • the seed must be introduced into and removed from an evacuated area, where there is a negative pressure, at which the gas discharge is caused.
  • the reduced pressure on the seed has an effect on the moisture content of the seed.
  • the seed must not be heated above 60 ° C. in order to avoid thermal damage, which is not easy to ensure in the known method.
  • a sterilization method in which a surface to be treated is exposed to a gas discharge in a hydrogen and oxygen-containing gas atmosphere at a pressure of 10 4 Pa to 2 x 10 5 Pa.
  • the operating or gas temperature in the known method depends on the expected germs and the temperature stability of the surface to be treated. With a dielectric barrier discharge, for example, cold plasmas can be produced at a temperature which is slightly above the room temperature, usually between 10 and 20 Kelvin. The setting of higher temperatures can be done by a corresponding temperature of the process gases used.
  • the known method can be used in general for the sterilization of biological material, a concrete example of application being the sterilization of seed. Due to the moderate process conditions such as low temperature and harmless gas composition, the inventive method should also be suitable for sensitive surfaces.
  • a method and a device for the treatment of powders and aggregates with electron beams are known.
  • the treatment is carried out at atmospheric pressure.
  • the known method and apparatus are intended, inter alia, for the pasteurization of the surface of agricultural products, such as cereal grains, for the elimination of both spoilage microorganisms and pathogens.
  • the transport of the particles to be treated through the area of the electron beam treatment is to be effected by pneumatic transfer or by a fluidized bed, in which case a fluidized bed is to be understood as meaning a thin layer fluidized with compressed air and moving at high speed overall.
  • the electron energy of the electrons used in the known method is on the order of 100 keV.
  • the electrons that are present in addition to ions and reactive gas species and photons have an energy of the order of only 1 eV.
  • WO 2004/105810 A1 discloses the treatment of living cells containing biological materials with a plasma generated by gas discharge, in which the physical plasma is generated by dielectrically impeded gas discharge at atmospheric pressure by means of a high voltage alternating in the form of individual bipolar voltage pulses.
  • the invention has for its object to provide a method for the treatment of seed with a physical plasma at atmospheric pressure and a device suitable for this purpose, which actively counteract thermal damage to the seed.
  • the object of the invention is achieved by a method for the treatment of seed having the features of patent claim 1 and by a device for the treatment of seed having the features of patent claim 8.
  • Preferred embodiments of the new method are described in the dependent claims 2 to 7, preferred embodiments of the new device in the dependent claims 9 to 16.
  • the cooling of the seed via the gas stream allows the seed to be exposed to the physical plasma until the desired effects of the plasma treatment have occurred, without there being any heating of the seed, which could lead to thermal damage.
  • the seed can be kept in suspension with the gas stream over the desired duration of the plasma treatment in the manner of a fluidized bed vertically through-flowed from the bottom to the top.
  • desired effects are not only biological-chemical effects for the reduction of pathogens on the surface of the seeds, but also physical-chemical effects.
  • the surface of the seed is hydrophilized by performing a physico-mechanical cleaning of the surface and chemical attachment of plasma-generated polar groups to the seed surface. This increased hydrophilicity leads to an improved water and nutrient uptake of the seeds, which, like the pathogen reduction, manifests itself in an increased germination capacity.
  • Treating at atmospheric pressure eliminates the need to inject seed into and out of the area where reduced pressure prevails. If the new process has a slight negative pressure relative to the static ambient pressure in the area of the physical plasma, this is based exclusively on dynamic effects, such as, for example, on a suction from the area of the physical plasma. Also, any overpressure relative to the ambient pressure is limited to such dynamic effects, such as, for example, an injection of reaction gas into the area of the physical plasma.
  • a physical plasma at atmospheric pressure is known in principle.
  • Commercially available plasma sources in the form of so-called plasma jets can be used for this purpose. It can also cause a so-called corona discharge.
  • Another preferred way of producing the physical plasma in the new process is a dielectrically impeded discharge. It is known from WO 2004/105810 A1, living biological cells containing biological material with a by a dielectrically REHBERG HÜPPE + PARTNER - 5 - PCT application
  • the treatment of the seed at atmospheric pressure makes it possible to apply a stream of gas to the seed for cooling.
  • the gas stream can also be used to introduce a special reaction gas into the physical plasma. Even if the gas discharges are ignited to generate the plasma in ambient air, a flow through the treatment area makes sense, if not necessary, because it replaces the substances used by the gas discharges and the reactions of the plasma and thus ensures the same conditions for the production of the plasma become. This is a prerequisite for the generation of a homogeneous plasma as possible within a larger volume.
  • Another function of the gas flow may be the promotion of the seed by the area of the physical plasma or the rotation of the seed within the physical plasma. Depending on the task of the gas flow in the individual case, the direction of the gas flow, its strength and the exact location of the seed to be treated with the gas stream to choose. This location may be located directly within or adjacent to the treatment of the seed with the physical plasma.
  • predetermined maximum temperature can be effected for example by varying the parameters of the physical plasma, the residence time of the seed in the area of the physical plasma and the loading of the seed with a gas stream.
  • the seed In order for the new method to have the maximum positive effect on the seed, the seed must be exposed on all sides to the plasma. To ensure this, the individual grains of seed in the physical plasma must either be singulated and exposed to a fully homogeneous plasma, or they are circulated in the plasma such that uniform treatment of their entire surfaces occurs. As a rule, such a circulation is easier to achieve than a homogenous plasma from all sides, which acts on isolated seeds of the seed.
  • a seed conveyor may be provided with a vibrator; the seed can be fed via a dropping step between two subsections in which the treatment with the physical plasma takes place;
  • the grains of the seeds may be circulated in a turbulent gas flow or the grains may be mechanically rotated by a counter-conveyor.
  • the person skilled in the art also has further detailed solutions available here.
  • the gas discharges may be caused by individual voltage pulses of alternating polarity, bipolar voltage pulse pairs or bipolar voltage pulse groups spaced from each other by a multiple of their duration.
  • the individual voltage pulses a very steep voltage rise can thus be realized compared with their pulse repetition frequency, which makes it possible to ignite a quasi-homogeneous gas discharge at atmospheric pressure.
  • the electrical power fed into the gas discharges is limited by the distance of the voltage pulses. In this way, an unnecessary electrical heating of the plasma and the seed contained therein is prevented. In particular, there is no resistance heating of the seed in the volume of its grains.
  • a compressed gas source and / or a fan is provided to cool the seed in the region and / or in the environment of the treatment with the physical plasma with a gas stream.
  • a temperature sensor may be provided to detect, in the region of the treatment with the physical plasma, a temperature which gives at least an indirect indication of the maximum temperature of the seed due to the plasma treatment.
  • temperature control may limit the temperature of the seed to a predetermined maximum temperature by varying operating parameters of the new device.
  • a seed circulating means in the treatment room may comprise a vibrator engaging on a seed conveyor and / or a dropping stage and / or a source of turbulent gas flow and / or a counterfeiting conveyor mechanically twisting the seed grains.
  • an electrode and a counter electrode of the plasma source may be arranged coaxially with one another and define a vertically open treatment space with the interposition of a dielectric shield. Through this treatment room, the seed can fall through from top to bottom.
  • a gas flow directed counter to the falling seed through the treatment space from bottom to top can define the residence time of the seed in the treatment space and also ensure a circulation of the seed in the treatment space.
  • an electrode of the plasma source is arranged opposite to a conveyor belt serving as a counterelectrode.
  • two electrodes of the plasma source are arranged opposite to a conveyor belt serving as an intermediate electrode, wherein a high voltage generator generates a high AC voltage between the two electrodes.
  • the conveyor belt can be grounded for safety reasons. However, it eliminates the need to ground the high voltage generator.
  • the new method can be combined with the sorting of seeds according to the size and weight of the individual grains.
  • Such separation processes are generally customary in order to achieve a uniform germination behavior of the individual grades of the seed.
  • the new method can for example REHBERG HÜPPE + PARTNER - 8 - PCT application
  • the coated grains can either consist entirely of a seed grain and a layer deposited thereon from the physical plasma, or the physical plasma can also be used only to apply a partial layer or to improve the adhesion of the actual coating, which is then applied in another way .
  • the novel process has particular advantages when at least a substantial proportion of the coating of the seed takes place from the plasma because the atmospheric pressure prevailing in accordance with the invention enables much higher deposition rates than plasma treatment of seed at reduced pressure.
  • Fig. 1 outlines a vertical section through a device for treating seed with a physical plasma at atmospheric pressure a REHBERG HÜPPE + PARTNER - 9 - PCT application
  • Embodiment of the new method in which the seed falls from top to bottom through a treatment room.
  • Fig. 2 outlines a vertical section through a further device for the
  • Fig. 3 outlines a modification of the device according to a vertical section
  • Fig. 2 in terms of ensuring the all-round treatment of the seed with the physical plasma.
  • FIG. 4 outlines a modification of the apparatus of FIG. 2 with respect to the
  • FIG. 5 outlines a further embodiment of the new method by means of a vertical section through yet another device for the treatment of seed with a physical plasma at atmospheric pressure, in which the seed rolls through the area of action of a physical plasma generated by gas discharge between two separate electrodes;
  • Fig. 6 shows a schematic diagram of an apparatus for the treatment of seed with a physical plasma at atmospheric pressure, in which the seed is moved through the area of action of a Plasmajets.
  • the device 1 sketched in FIG. 1 has a charging reservoir 2 from which seed 3 is discharged from above into a treatment space 4.
  • a dosing device of the charging reservoir 2 for the seed 3 used for this purpose is not shown separately here.
  • the treatment space 4 is delimited by an outer tube 5, which serves as a counterelectrode connected to the earth 6 for an electrode 8 arranged on the tube axis, REHBERG HÜPPE + PARTNER - 10 - PCT registration
  • the electrode 8 is acted upon by a high voltage generator 10 with bipolar voltage pulse pairs of an amplitude of a few 10000 volts, which have a pulse duration of less than 10 microseconds at a repetition frequency of the bipolar voltage pulse pairs of less than 100,000 Hz.
  • a high voltage generator 10 with bipolar voltage pulse pairs of an amplitude of a few 10000 volts, which have a pulse duration of less than 10 microseconds at a repetition frequency of the bipolar voltage pulse pairs of less than 100,000 Hz.
  • 4 gas discharges between the electrode 8 and the counter electrode 7 are caused at atmospheric pressure in the treatment chamber, which are dielectrically obstructed by the dielectric shield 9 of the electrode 8.
  • the dielectric barrier limits the current through the gas discharge and thus stabilizes the generation of the plasma by the alternating high voltage applied to the electrode 8.
  • the gas discharges in the treatment space 4 generate a plasma in the treatment space 4, which acts on the seed 3.
  • the quality of the seed, in particular its germination ability is improved.
  • the plasma in the treatment chamber 4 is generated from air.
  • the resulting oxygen radicals can kill microorganisms on the surface of the grains 30 of the seeds. This means a biological disinfection of the seed.
  • reaction gases for generating certain chemical reactions can be introduced through the plasma. 1 indicates a gas flow 11 leading upwards through the treatment space 4.
  • This gas flow 11 provides the gas in which the plasma in the treatment space 4 is ignited by the gas discharges between the electrode 8 and the counter electrode 7. But the gas stream 11 also has other functions. It determines the residence time of the seed 3 in the treatment room 4 by slowing down its falling speed.
  • the device 1 sketched in FIG. 2 has a conveyor belt 13 which transfers the seed 3 here from the charging reservoir 2 through the treatment space 4 into the unloading reservoir 12.
  • the conveyor belt 13 is connected to the ground 6 and serves as an intermediate electrode 14 between two each provided with a dielectric shield 9 electrodes 8, between which the AC high voltage generator 10 here generates the AC high voltage for generating a plasma in the treatment room 4.
  • the intermediate electrode 14 electrically connects the two parts of the treatment space 4, each extending between one of the electrodes 8 and the conveyor belt 13.
  • a shaker 15 is shown in Fig. 2 only schematically indicated, which changes the height of the conveyor belt 13, so that the individual grains 30th of the seed 3 "hop" on the conveyor belt 13. As a result, they are both isolated and rotated, so that the plasma can affect them on all sides.
  • a gas stream is passed over the seed 3 in order to introduce reaction gases into the treatment space 4 and / or to reliably preclude thermal damage to the seed 3 in the treatment space 4 by the seed 3 is cooled specifically. In this case, slight dynamic deviations of the pressure from the ambient pressure may occur in the treatment chamber 4 due to the gas flow. But there are no pressure locks for the seed 3 required by which this would have to be introduced into the device 1 or removed from this, in order to maintain their function.
  • a double arrow vibrator 15 may be formed differently. He can move the entire assembly of the electrodes 8 and the conveyor belt 13 or only the conveyor belt 13 or only a part thereof stochastically or periodically, preferably jerky, in the vertical direction or pivot about a horizontal pivot axis. It is also possible to form the vibrator in the form of a blower acting on the seed 3 from below by the conveyor belt 13, which leads to a rearrangement of the individual grains 30 of the seed 3 on the conveyor belt 13 with the gas flow caused by it.
  • FIG. 3 outlines another possibility for redistributing the seeds 30 of the seed 3 during transport through the treatment space 4 in order to ensure that the seed 3 is treated on all sides with the physical plasma.
  • the conveyor belt 13 has a step 16 between the two sections of the treatment chamber 4. By falling down the step 16, the seed 3 is turned before entering the second part of the treatment room 4.
  • the conveyor belt 13 may additionally be provided in whole or in some areas with a vibrator 15 (not shown here).
  • the conveyor belt 13 connected to the earth 6 serves here as a counter electrode 7 to a single electrode 8 with a dielectric shield 9, which is acted upon by a high voltage generator 10 with respect to the earth 6 generated voltage.
  • the treatment room 4 only a single area.
  • the mode of operation of the device 1 according to FIG. 4 is exactly the same as that of FIG. 2.
  • the device 1 according to FIG. 5 again has two electrodes 8 with dielectric shields 9.
  • the gas discharges are not caused between each electrode 8 and the conveyor belt 13 as an intermediate electrode, but between the two electrodes 8.
  • the plasma thus generated is blown with a passing between the electrodes 8 through gas flow 17 on the seed 3, that of the Aufladereervoir 2 passes through the here inclined conveyor belt 13 into the unloading reservoir 12.
  • the conveyor belt 13 may be inclined so steeply that the seeds 30 of the seed roll down the conveyor belt 13, i. get to the unloader without the conveyor belt 13 is moved.
  • the conveyor belt 13 can even be driven in the opposite direction to the seeds 30 of the seed 3 rolling down into the unloading reservoir 12 in order to adjust the rolling movement of the grains 30 or their residence time in the treatment space 4 in which the physical plasma acts on them.
  • a vibrator 15 may be provided for the conveyor belt 13 here in order to additionally promote the important for their all-round treatment redistribution of the grains 30 of the seed 3.
  • the apparatus 1 sketched in FIG. 6 comprises as a source for the physical plasma a so-called plasma jet 18 in which gas discharges are provided between an electrode 19 and a gas line 20 serving as a counterelectrode 7 coaxially surrounding the electrode 19 by a high voltage alternating voltage generated by a high voltage generator 10 be caused. These gas discharges are generally not dielectrically impeded.
  • a gas flow 17 through the plasma jet 18 blows the plasma generated in this way into a treatment space 4, through which the seed 3 is conveyed here with a gas flow 11 from the charge reservoir 2 to the discharge reservoir 12.
  • Turbulence of the gas flow 11, to which also the gas flow 17 contributes by the Plasmajet 18, ensure a circulation of the seed 3 in the treatment chamber 4 and thus an all-round treatment of the grains 30 of the seed 3 by the physical plasma.

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Plasma Technology (AREA)
  • Pretreatment Of Seeds And Plants (AREA)

Abstract

L'invention concerne le traitement de semences (3) au moyen d'un plasma physique produit dans une chambre de traitement (4), dans laquelle règne une pression atmosphérique.
PCT/EP2007/003815 2006-04-28 2007-04-30 Procédé et dispositif pour traiter des semences au moyen d'un plasma physique sous pression atmosphérique Ceased WO2007124945A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006020483A DE102006020483A1 (de) 2006-04-28 2006-04-28 Verfahren und Vorrichtung zur Behandlung von Saatgut mit einem physikalischen Plasma bei Atmosphärendruck
DE102006020483.2 2006-04-28

Publications (1)

Publication Number Publication Date
WO2007124945A1 true WO2007124945A1 (fr) 2007-11-08

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PCT/EP2007/003815 Ceased WO2007124945A1 (fr) 2006-04-28 2007-04-30 Procédé et dispositif pour traiter des semences au moyen d'un plasma physique sous pression atmosphérique

Country Status (2)

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DE (1) DE102006020483A1 (fr)
WO (1) WO2007124945A1 (fr)

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WO2013168038A1 (fr) 2012-04-23 2013-11-14 Ariel-University Research And Development Company, Ltd. Traitement de semences par traitement de plasma froid pour réduire un angle de contact apparent de surface d'enveloppe de semences
CN103650699A (zh) * 2013-12-11 2014-03-26 苏州市奥普斯等离子体科技有限公司 一种种子等离子体处理装置及其处理方法
WO2017066129A1 (fr) 2015-10-12 2017-04-20 Applied Quantum Energies, Llc Procédés et appareils pour le traitement d'une matière agricole
US10194672B2 (en) 2015-10-23 2019-02-05 NanoGuard Technologies, LLC Reactive gas, reactive gas generation system and product treatment using reactive gas
US10925144B2 (en) 2019-06-14 2021-02-16 NanoGuard Technologies, LLC Electrode assembly, dielectric barrier discharge system and use thereof
CN114831176A (zh) * 2021-02-02 2022-08-02 湖州超群电子科技有限公司 一种利用电子束辐照对粮食杀菌消毒的系统及方法
WO2023000040A1 (fr) * 2021-07-23 2023-01-26 Animal Control Technologies (Australia) Pty Ltd Irradiation de grains ou de graines
WO2023010041A1 (fr) * 2021-07-28 2023-02-02 Apeel Technology, Inc. Dispositifs, systèmes et procédés de traitement au plasma de produits dans un système de revêtement comestible
CN116806482A (zh) * 2023-08-16 2023-09-29 中国农业大学 一种负压引流窝眼激振式等离子体种子处理装置及方法
US11896731B2 (en) 2020-04-03 2024-02-13 NanoGuard Technologies, LLC Methods of disarming viruses using reactive gas
CN119790765A (zh) * 2025-02-18 2025-04-11 中国农业大学 一种小微粒种子多环境胁迫适应及丸粒化工厂化处理方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009025864A1 (de) * 2009-04-09 2010-10-14 Universität Hohenheim Plasmaentkeimung
DE102009044932A1 (de) 2009-09-24 2011-04-07 Fachhochschule Hildesheim/Holzminden/Göttingen - Körperschaft des öffentlichen Rechts - Vorrichtung zum Behandeln von Objekten mit einem physikalischen Plasma bei Atmosphärendruck
DE102010060729A1 (de) * 2010-11-23 2012-05-24 Minervius Gmbh Verfahren zur Bestrahlung von Gegenständen, insbesondere von Schüttgütern
NL2006212C2 (en) * 2011-02-16 2012-08-20 Synthesis B V Device and method for disinfecting plant seeds.
DE102012209434A1 (de) 2012-06-04 2013-12-05 EVONTA - Service GmbH Verfahren und Vorrichtung zur Desinfektion rieselfähiger Produkte, vorzugsweise Saatgut, mit beschleunigten Elektronen
DE102012209435A1 (de) * 2012-06-04 2013-12-05 EVONTA - Service GmbH Verfahren und Vorrichtung zur Desinfektion rieselfähiger Produkte, vorzugsweise Saatgut, mit Ultraviolettlicht (UV-Strahlung)
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