WO1993022420A1 - Dispositif du type reacteur a volume variable et procede de culture de material cellulaire - Google Patents
Dispositif du type reacteur a volume variable et procede de culture de material cellulaire Download PDFInfo
- Publication number
- WO1993022420A1 WO1993022420A1 PCT/FR1993/000437 FR9300437W WO9322420A1 WO 1993022420 A1 WO1993022420 A1 WO 1993022420A1 FR 9300437 W FR9300437 W FR 9300437W WO 9322420 A1 WO9322420 A1 WO 9322420A1
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- enclosure
- medium
- liquid
- volume
- culture
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Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/44—Means for regulation, monitoring, measurement or control, e.g. flow regulation of volume or liquid level
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M25/00—Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
- C12M25/16—Particles; Beads; Granular material; Encapsulation
Definitions
- the present invention relates to a device for culturing cellular biological material in the form of solid particles in the presence of a liquid culture medium.
- solid particles of cellular biological material is understood here to mean particles made up, in whole or in part of cellular biological material, the other part if necessary consisting of inert material as support or immobilizing material. They can be, for example, cellular aggregates or parts of plant tissues such as pieces of roots, or even isolated cells coated on inert supports. Said particles being generally fine, although not necessarily, the device of the invention can in fact constitute an apparatus for cell culture in a liquid medium, said particles then comprising cells.
- This device comprises an enclosure intended to fill completely with said liquid and to contain said solid particles in contact with the liquid.
- the present invention also relates to a process for carrying out the reaction of the particles with the liquid, in particular a process for culturing cells in a liquid medium using such a device.
- a reactor of this type has been described in international patent application WO 86 05202. However, the device described previously did not have a variable volume.
- the reactor described in the aforementioned patent application comprises, near the culture zone, a propeller (28) intended to create a circulation of the liquid medium, so that it keeps the solid particles or cells in regime fluidized bed.
- a propeller intended to create a circulation of the liquid medium, so that it keeps the solid particles or cells in regime fluidized bed.
- An object of the present invention is to provide a bio-reactor 0 which makes it possible to carry out a culture of cellular biological material at constant cell volume density as the culture develops and, moreover, overcomes the drawbacks of the aforementioned reactor.
- the present invention provides a device for -5 " culture of cellular biological material in the form of solid particles in which said solid particles are brought into contact with a liquid culture medium, making it possible to maintain the volume density of the substance substantially constant.
- said cellular biological material relative to the volume of said culture medium, comprising: 0 - a culture chamber consisting of an enclosure (5) delimited by walls, at least one of said walls (1) can be mobile so that the enclosure has a variable volume - means (3a and 3b) for supplying, evacuating and circulating the liquid in and from the enclosure, and 5 _ retaining means (la, 6) said particles and separation from the liquid to maintain them inside the enclosure, characterized in that it comprises means for varying the volume of the culture medium in the culture chamber, in particular for increase nter the volume of the culture medium as the culture develops and the volume of cellular biological material increases, consisting of at least one of said mobile walls (1) of the enclosure.
- the enclosure defines, at least in part, a cylinder, said movable wall of the enclosure being constituted by a base of the cylinder.
- the enclosure partially defines at least one cylinder which cooperates in a sealed manner with a piston which can be moved inside the cylinder so as to vary the volume of the enclosure as a function of its position, the base of the piston constituting a movable wall of the enclosure.
- the enclosure consists of a cylindrical column, the liquid supply and discharge means being located at each end of the latter, one of these ends being constituted by said cylinder and said piston, and the piston including means for supplying or discharging the liquid from the enclosure at one end of the column, another means for supplying or discharging the liquid being situated at the other end.
- the aforementioned means for retaining particles and separating from liquids can consist of two grids, the mesh of which does not allow solid particles to pass, these means delimiting, with the other walls of the enclosure, a contact zone between liquid and solid particles.
- the grid of the grids will be chosen in particular as a function of one or more of the following parameters, accessible to those skilled in the art; dimensions and density of the particles relative to the liquid medium, as well as the desired speed of this medium, so that, in a particular embodiment of the invention, the particles can be kept in the fluidized bed regime.
- the mesh can be approximately 30 microns.
- the size of the solid particles according to the invention can be chosen from a wide range. It is generally between 1 ⁇ m and 5 cm.
- the grids could, for example, be constituted by a canvas, in particular stainless steel, taken in a frame, or by a disc of sintered material such as sintered stainless steel.
- the size of the meshes or pores of the grids or membranes will be from 0.5 ⁇ m to a few millimeters, for example 5 mm.
- said movable wall in particular the base of the piston, incorporates a means for retaining solid particles and for separating the liquid, in particular of the grid type as described above.
- the enclosure may consist of a cylindrical column comprising a cylindrical wall • and two end walls forming the bases of said cylinder, the latter comprising grids allowing entry , the circulation and the exit of the liquid medium from the enclosure, but retaining the particles inside the enclosure, at least one of these two grids being mobile.
- the enclosure has a closable opening made in its wall, allowing the introduction of particles into the enclosure, or the introduction, or removal, partial or total of the medium containing the solid particles. If necessary, it will be preferable for said opening to communicate with the interior of the enclosure only when the enclosure reaches a certain volume, in particular when the volume of the enclosure is maximum.
- the device according to the invention comprises means for circulation and treatment of the liquid outside the enclosure, comprising in particular a pipe, a pump preferably with variable flow rate and more preferably being of the type making it possible to reverse the direction the current of the liquid medium, and possibly a container forming a liquid medium reservoir, and isolation clamps situated respectively at the inlet and at the outlet of the enclosure and of said container.
- said container may include various means for controlling, modifying and / or homogenizing the composition of the liquid medium, such as for example sensors measuring the temperature, the pH or the concentration of the dissolved gases, and means for withdrawing the medium or adding different substances or compositions such as fresh medium or constituents of this medium, in liquid, dissolved and / or gaseous form.
- the device comprises an additional pipe, preferably provided with an isolation clamp, making it possible to produce a circulation loop for the liquid medium, said loop including the enclosure and the pump, but isolating the container above forming a reservoir.
- the device according to the invention further comprises, in particular at the level of said container forming a reservoir, means making it possible to withdraw, alternately or continuously, at least part of the medium and to treat it , in particular for carrying out the extraction of substances, in particular those initially incorporated into the medium, or those produced during the incubation of the medium with said particles, and optionally allowing recycling inside the device, in particular in the container forming tank, the medium removed, after the above treatment.
- the aforementioned means advantageously comprise one or more extraction columns, arranged in series or in parallel, containing an appropriate chromatographic support.
- the present invention also relates to a method of culturing cellular biological material in the form of solid particles in which the volume density of said material is kept substantially constant relative to the volume of culture medium in contact with said particles in a culture, characterized in that the volume of the culture medium included in the culture chamber is increased as the volume of said material increases, by varying the volume of the culture chamber.
- said solid particles of cellular biological material are brought into contact with said liquid medium by means of a device according to the invention in which the enclosure is completely filled with liquid, and one adds of the liquid culture medium inside the aforementioned enclosure, by increasing the volume of said enclosure by displacement of said movable wall, which in particular makes it possible to control at will the volume density of said solid particles, by adding medium from the culture during culture.
- said solid particles are kept in suspension, at least intermittently, in the liquid medium, in particular in the fluidized bed regime, by virtue of the circulation of this medium through the aforementioned enclosure.
- the liquid medium is circulated continuously or intermittently through the enclosure, possibly by reversing the direction of circulation regularly or not, in order to obtain in particular better agitation, as well as a good distribution of the particles in suspension in the enclosure and, if necessary, to unclog the aforementioned retaining means, in particular the grids.
- the liquid medium can be partially or entirely renewed by reaction course.
- the control and measurement of all the reaction parameters is carried out outside the enclosure and this during the reaction.
- the aforementioned particles consist entirely or in part of cellular biological material, the other part possibly being, in the latter case, constituted of an inert material, advantageously a material generally used by man. of art, in particular as a support or immobilization material, in particular for inclusion, of said cellular biological material.
- the inert material in particular that intended to be used to immobilize said living material, can for example consist of a polymer matrix, such as a polyacrylamide, an isotropic gel, such as a carrageenan gel, or a calcium alginate gel, of a high molecular weight protein, such as collagen in the form of a micro-sponge, or in glass, preferably in the form of porous beads.
- a polymer matrix such as a polyacrylamide
- an isotropic gel such as a carrageenan gel
- a calcium alginate gel of a high molecular weight protein, such as collagen in the form of a micro-sponge, or in glass, preferably in the form of porous beads.
- the aforementioned cellular biological material may be composed of cells, such as eukaryotic or prokaryotic cells, including • microorganisms such as bacteria, molds, yeasts, Euglena, microalgae, plant cells, animal cells, differentiated cell aggregates or not, such as "TIL” (Tumor Infiltrating Lymphocytes), plant embryos, or plant organs such as roots, tubers, organogenic nodules, seedlings such as micropopagules or protocols, in particular orchid protocols.
- cells such as eukaryotic or prokaryotic cells, including • microorganisms such as bacteria, molds, yeasts, Euglena, microalgae, plant cells, animal cells, differentiated cell aggregates or not, such as "TIL” (Tumor Infiltrating Lymphocytes), plant embryos, or plant organs such as roots, tubers, organogenic nodules, seedlings such as micropopagules or protocols, in particular orchid protocols.
- TIL Tumor Infiltra
- microorganisms of the flocculant type may be used.
- the culture method according to the present invention can be advantageously applied to the production of somatic plant embryos, in particular of vine or rose, by culturing aggregates of embryogenic cells, of pro-embryogenic cell masses, or of pro- embryos, or even already formed embryos such as so-called globular, torpedo or cotyledonary embryos.
- An advantage of this type of process in particular applied to the culture of cellular biological material as defined above, in particular cells, cellular aggregates, plant embryos, plant organs or seedlings, is to be able to dispense with aeration.
- liquid medium directly in the culture chamber.
- aeration means such as oxygenation cartridges can be integrated into the means for treating the culture medium during circulation outside the culture chamber.
- TIL tissue-in-cell particles
- the TILs can be introduced into the device of the invention, for mass production.
- the possibility offered by the device of being able to operate with a very small volume of medium, especially when the container forming the reservoir is switched off, is here particularly advantageous since the culture medium is at a very high price.
- the device and the method according to the invention can be applied to the transformation of molecules by plant or animal cells or microorganisms when the said molecules are included in the liquid medium.
- the production of molecules can be carried out, such as proteins, polyphenols such as flavonoids, saponins, terpenes, alkaloids, sterols, retinoids or vitamins.
- Figure 1 shows a general diagram of a device according to the invention.
- Figure 2 shows an embodiment of the extraction means allowing the extraction and separation of substances from the liquid medium.
- Figure 3 shows, in section, an embodiment of the reactor enclosure.
- FIG. 1 A device more particularly adapted to cell culture, but not exclusively, is described in Figures 1 to 3.
- FIG. 1 A device more particularly adapted to cell culture, but not exclusively, is described in Figures 1 to 3.
- Figures 1 to 3 In the device of Figure 1 are shown in:
- the movable wall I of the enclosure is constituted by the base of the piston 21.
- the piston cooperates in leaktight manner with the interior of the cylindrical column ⁇ by an O-ring 23 ( Figure 3).
- the piston includes the means 3a for supplying or discharging the liquid at the upper end of the column 4. At the base of the column, the means 3b also allow the liquid to be supplied or discharged.
- the particles are retained in the enclosure by 30 ⁇ mesh grids, one (la) included in the base of the piston 21, the other (6) at the base of the column.
- FIG. 2 are shown the conventional means for withdrawing, extracting and separating substances from the liquid medium from the container 10:
- FIG. 3 which shows an embodiment of a reactor enclosure suitable in particular for the culture of cells, cell aggregates, embryos or roots, are represented in:
- the cover 20 of the cylindrical column is removable, which can allow, after releasing the piston, to drain solid particles such as roots, if necessary.
- the base of the cylinder is disposed in abutment on the grid 6, itself abutting on a flat seal 24 in a sealed manner.
- the following describes, by way of illustration, a regeneration process for the production of plant embryos, where the device and method according to the invention intervene in the three stages of the following process: - the multiplication of embryogenic cells, of aggregates of embryogenic cells, pro-embryogenic cell masses, pro-embryos and / or globular stage embryos,
- the term “maturation” denotes both the development in embryos of cellular aggregates of pro-embryogenic masses or of pro -embryos, as the actual maturation of the embryos thus formed, these two processes being successive or more or less simultaneous depending on the culture conditions and / or the plant species considered.
- the initiation of maturation takes place in 80 ml of culture medium.
- the piston is raised to the position corresponding to this volume.
- the peristaitic pump 8 connected to the withdrawal pipe 9 and to the pipe 1a allows filling by the pipe 3b at the bottom of the column, from the container 10.
- the circuit is connected to the medium reservoir 10 by connecting the pipes 19b and 11 and the enclosure is filled and the whole is autoclaved for 20 minutes at 120 ° C.
- the reservoir contains approximately 11 liters of Murashîge and Soog type medium well known to those skilled in the art, without growth hormone. 2) Introduction of cells in the form of aggregates
- the device After autoclaving, the device is placed under the flow of a hood in order to handle sterile.
- the pipes 2 and 13 are opened and the piston is raised to the maximum.
- 80 ⁇ l of cells are introduced in the form of aggregates per ml of medium through the pipe 13 and rinsed with 1 ml of sterile medium.
- the piston is lowered to the maximum to remove the air.
- the pump 8 is made to operate in a variable flow regime, by alternating periods of high flow and periods of low flow, or even zero, which has the effect of maintaining agitation within the aggregates in suspension.
- a variable flow regime by alternating periods of high flow and periods of low flow, or even zero, which has the effect of maintaining agitation within the aggregates in suspension.
- We generally benefits from the positive effect of certain growth factors.
- the volume of the culture is increased by raising the piston a few centimeters. This is done for 12 days, increasing the volume by approximately 30 ml each day to reach a final volume of 450 to 500 ml (maximum volume of the chamber). It is also possible, two to three times during the culture of the embryos, to completely renew the medium by emptying the column and the reservoir and by replenishing the container 10 of fresh culture medium through the pipe 16a. We proceed as to empty and stop the circuit, as indicated below.
- the seeding is carried out at a density of 20 ⁇ l of cells per ml, in 80 ml of medium, in a 250 ml Erlenmeyer flask. After 15 days of culture, the density is 80 microliters per ml. At this density, the fractionation into 4 erlens is necessary, otherwise cell necrosis occurs. This is manual, and the risk of microbial contamination is high. Thanks to the method of the device of the invention, using the movable piston, it is possible to reduce the density to 20 ⁇ l of cellular aggregates per mi of medium by automatically adding culture medium without risk of exogenous contamination, this which is an essential asset for industrial implementation.
- Second stage maturation and passage from the cell aggregate stage to the heart-shaped embryo stage.
- the starting density is 1 to 2 ⁇ l of cells per ml, and reaches 40 ⁇ i of cellular aggregates per ml after 15 days of culture (in a 250 ml Erlenmeyer flask, containing 80 ml of medium).
- cells can release protein and other inhibitors into the environment, which it is problematic to eliminate from Perien.
- the method and device of the invention make it possible to maintain the volumetric density of cellular aggregates as we have seen and, in addition, the coupling of an appropriate filtration system (25 to 33) on the circulation circuits outside the culture chamber 5 makes it possible to eliminate the molecules of the inhibitor type periodically or continuously.
- the methods and devices of the invention make it possible to control and measure the various parameters: O, C0 2 , 2 "temperature, agitation, PH and composition of the culture medium. , without risking damaging or injuring the embryos and cell aggregates.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5519015A JPH07506250A (ja) | 1992-05-06 | 1993-05-06 | 細胞物質培養のための可変容積反応器型装置および方法 |
DE69305163T DE69305163T2 (de) | 1992-05-06 | 1993-05-06 | Reaktor mit veraenderlichem volumen und zellkulturverfahren |
EP93910090A EP0640124B1 (fr) | 1992-05-06 | 1993-05-06 | Dispositif du type reacteur a volume variable et procede de culture de material cellulaire |
US08/331,639 US5707868A (en) | 1992-05-06 | 1993-05-06 | Variable-volume reactor-type device and process for culturing cellular material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9205579A FR2690926B1 (fr) | 1992-05-06 | 1992-05-06 | Dispositif du type reacteur a volume variable et procede de culture cellulaire. |
FR92/05579 | 1992-05-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993022420A1 true WO1993022420A1 (fr) | 1993-11-11 |
Family
ID=9429586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1993/000437 WO1993022420A1 (fr) | 1992-05-06 | 1993-05-06 | Dispositif du type reacteur a volume variable et procede de culture de material cellulaire |
Country Status (9)
Country | Link |
---|---|
US (1) | US5707868A (fr) |
EP (1) | EP0640124B1 (fr) |
JP (1) | JPH07506250A (fr) |
AU (1) | AU4074193A (fr) |
CA (1) | CA2135184A1 (fr) |
DE (1) | DE69305163T2 (fr) |
ES (1) | ES2093965T3 (fr) |
FR (1) | FR2690926B1 (fr) |
WO (1) | WO1993022420A1 (fr) |
Families Citing this family (31)
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WO1998029730A1 (fr) * | 1996-12-31 | 1998-07-09 | Rorer Pharmaceutical Products Inc. | Procede et appareil de depletion selective de particules biologiques |
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DE19920811B4 (de) * | 1999-05-06 | 2004-08-19 | Micronas Gmbh | Vorrichtung zur Durchführung von Untersuchungen an Zellkulturen |
US7795012B2 (en) | 1999-05-06 | 2010-09-14 | Micronas Gmbh | Device for performing analysis on cell cultures |
FR2803852B1 (fr) * | 2000-01-17 | 2004-11-05 | Farzin Sarem | Dispositif de culture cellulaire et tissulaire a circulation de fluide de culture controlee |
CA2458941A1 (fr) * | 2001-08-30 | 2003-03-13 | Arbomedics Gmbh | Procede et dispositif de culture cellulaire in vitro |
WO2003060061A1 (fr) * | 2001-12-21 | 2003-07-24 | Organogenesis Inc. | Chambre a volume adaptable pour culture cellulaire et assistance d'organe |
CN1300297C (zh) * | 2002-09-20 | 2007-02-14 | 华东理工大学 | 一种用于动物细胞扩大接种的消化反应器 |
DE10322054B4 (de) * | 2003-05-15 | 2015-06-18 | Sartorius Stedim Biotech Gmbh | Vorrichtung und Verfahren zur Kultivierung von Zellen |
US7455814B2 (en) * | 2004-04-23 | 2008-11-25 | Giblin Leonard J | Metered dispenser and aspirator device |
DE102004024833A1 (de) * | 2004-05-19 | 2005-12-29 | Universität Rostock | Vorrichtung zur Regelung des Füllstands von Medium in einem Kulturgefäß |
TWI302569B (en) * | 2004-12-31 | 2008-11-01 | Ind Tech Res Inst | Bioreactor system |
US8415142B2 (en) * | 2006-06-14 | 2013-04-09 | Malcolm Glen Kertz | Method and apparatus for CO2 sequestration |
US8372632B2 (en) * | 2006-06-14 | 2013-02-12 | Malcolm Glen Kertz | Method and apparatus for CO2 sequestration |
WO2008089510A1 (fr) * | 2007-01-22 | 2008-07-31 | Ian Malcolm Wright | Bioréacteur à volume variable |
GB2467645B (en) * | 2007-07-06 | 2011-12-21 | Univ London | A method of proliferating human hepatocyte cells |
KR101061424B1 (ko) | 2009-07-15 | 2011-09-01 | 수성건설 주식회사 | 미생물 배양장치 |
EP2550357B1 (fr) * | 2010-05-12 | 2016-09-14 | Xpand Biotechnology BV | Sac de culture de cellules |
JP5922373B2 (ja) * | 2011-10-31 | 2016-05-24 | 日機装株式会社 | 血液吸着器の製造方法及び製造装置 |
WO2014074772A1 (fr) | 2012-11-09 | 2014-05-15 | Heliae Development, Llc | Procédés et systèmes de combinaisons de mixotrophes, phototrophes et hétérotrophes |
WO2014074770A2 (fr) | 2012-11-09 | 2014-05-15 | Heliae Development, Llc | Procédés à mixotrophie équilibrée |
EP2931871A4 (fr) | 2012-12-11 | 2016-07-20 | Pall Technology Uk Ltd | Récipient pour la culture cellulaire |
FR3000743B1 (fr) | 2013-01-07 | 2016-02-05 | Arkema France | Procede de metathese croisee |
WO2015165583A1 (fr) * | 2014-04-28 | 2015-11-05 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Systèmes de fermentation |
JP6457338B2 (ja) * | 2015-05-28 | 2019-01-23 | 株式会社日立製作所 | 液体還流容器、細胞濃縮装置及び細胞濃縮システム |
JP6268342B2 (ja) * | 2016-04-27 | 2018-01-31 | 株式会社ジェイテックコーポレーション | 大量細胞培養システム及びそれに用いる回転細胞培養装置 |
EP3532598B1 (fr) * | 2016-10-28 | 2020-09-09 | Global Life Sciences Solutions USA LLC | Plateau de bioréacteur |
GB201811402D0 (en) * | 2018-07-12 | 2018-08-29 | Alconbury Weston Ltd | Liquid process assembly |
TWI732357B (zh) * | 2018-12-27 | 2021-07-01 | 財團法人工業技術研究院 | 細胞培養裝置及方法 |
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FR2519651A1 (fr) * | 1982-01-14 | 1983-07-18 | Milois Jean | Fermenteur petit modele de production de gaz vegetal pour fumiers et matieres analogues |
DE3327541A1 (de) * | 1983-07-30 | 1985-02-14 | Wilhelm 4284 Heiden Wissusek | Verfahren und vorrichtung zur gewinnung von biogas |
EP0269086A2 (fr) * | 1986-11-26 | 1988-06-01 | Rikagaku Kenkyusho | Appareil pour la culture de cellules |
EP0322749A2 (fr) * | 1987-12-28 | 1989-07-05 | Snow Brand Milk Products Co., Ltd. | Réacteur avec une chambre fluidisée |
EP0428800A1 (fr) * | 1988-05-25 | 1991-05-29 | Ngk Insulators, Ltd. | Bioréacteur |
EP0473011A2 (fr) * | 1990-08-29 | 1992-03-04 | Forschungszentrum Jülich Gmbh | Procédé et installation pour l'obtention d'enzymes à partir de suspensions contenant des enzymes |
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1992
- 1992-05-06 FR FR9205579A patent/FR2690926B1/fr not_active Expired - Fee Related
-
1993
- 1993-05-06 EP EP93910090A patent/EP0640124B1/fr not_active Expired - Lifetime
- 1993-05-06 CA CA002135184A patent/CA2135184A1/fr not_active Abandoned
- 1993-05-06 JP JP5519015A patent/JPH07506250A/ja active Pending
- 1993-05-06 ES ES93910090T patent/ES2093965T3/es not_active Expired - Lifetime
- 1993-05-06 WO PCT/FR1993/000437 patent/WO1993022420A1/fr active IP Right Grant
- 1993-05-06 US US08/331,639 patent/US5707868A/en not_active Expired - Fee Related
- 1993-05-06 DE DE69305163T patent/DE69305163T2/de not_active Expired - Fee Related
- 1993-05-06 AU AU40741/93A patent/AU4074193A/en not_active Abandoned
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FR1589364A (fr) * | 1966-09-02 | 1970-03-31 | ||
FR2507496A1 (fr) * | 1981-06-12 | 1982-12-17 | Dumont Engineering Et Cie Sa | Appareil destine notamment a l'hydrolyse et a la filtration ainsi que ses utilisations |
FR2519651A1 (fr) * | 1982-01-14 | 1983-07-18 | Milois Jean | Fermenteur petit modele de production de gaz vegetal pour fumiers et matieres analogues |
DE3327541A1 (de) * | 1983-07-30 | 1985-02-14 | Wilhelm 4284 Heiden Wissusek | Verfahren und vorrichtung zur gewinnung von biogas |
EP0269086A2 (fr) * | 1986-11-26 | 1988-06-01 | Rikagaku Kenkyusho | Appareil pour la culture de cellules |
EP0322749A2 (fr) * | 1987-12-28 | 1989-07-05 | Snow Brand Milk Products Co., Ltd. | Réacteur avec une chambre fluidisée |
EP0428800A1 (fr) * | 1988-05-25 | 1991-05-29 | Ngk Insulators, Ltd. | Bioréacteur |
EP0473011A2 (fr) * | 1990-08-29 | 1992-03-04 | Forschungszentrum Jülich Gmbh | Procédé et installation pour l'obtention d'enzymes à partir de suspensions contenant des enzymes |
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Also Published As
Publication number | Publication date |
---|---|
DE69305163T2 (de) | 1997-04-03 |
AU4074193A (en) | 1993-11-29 |
FR2690926B1 (fr) | 1995-08-04 |
DE69305163D1 (de) | 1996-11-07 |
JPH07506250A (ja) | 1995-07-13 |
EP0640124B1 (fr) | 1996-10-02 |
US5707868A (en) | 1998-01-13 |
EP0640124A1 (fr) | 1995-03-01 |
CA2135184A1 (fr) | 1993-11-11 |
FR2690926A1 (fr) | 1993-11-12 |
ES2093965T3 (es) | 1997-01-01 |
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