Classifications

• • 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
  • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
  • C12M21/14—Bioreactors or fermenters specially adapted for specific uses for producing enzymes
• • 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
  • C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
  • C12M27/10—Rotating vessel
• • 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
  • C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
  • C12M27/16—Vibrating; Shaking; Tilting
• • C—CHEMISTRY; METALLURGY
  • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
  • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
  • C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
  • C12N9/0004—Oxidoreductases (1.)
  • C12N9/0065—Oxidoreductases (1.) acting on hydrogen peroxide as acceptor (1.11)

Definitions

• the present invention relates to a method for producing lignolytic enzymes using Phanerochaete chrysosporium.
• glass vessels which are moved by shaking machines are suitable for the formation of pellets of microorganisms (HJ. Rehm: Introduction to industrial microbiology, Berlin-Heidelberg-New York 1971).
• the containers mostly bottles or Erlenmeyer flasks
• the shaking motion of the vessels causes air to break into the solution from the surface.
• Amplitude, rotation and vibration machines which normally have variable movement speeds, are used for the chute.
• the vessels can be provided with flat bulges, the so-called chicanes.
• a disadvantage of these systems is that they are only suitable for laboratory use. Thousands of bottles or Erlenmeyer flasks would be necessary for large-scale industrial use, so that the use of such devices is not economically viable.
• the object of the present invention is therefore to provide a method for producing lignolytic enzymes by means of Phanerochaete chrysosporium, which can also be carried out in fermentation vessels of more than 40 l. '
• Phanerochaete chrysosporium is placed in a stirrer-free, closed vessel, pellets of Phanerochaete chrysosporium are produced there by rotating and swiveling the vessel, these are then shaken until the enzyme is produced or transferred to a conventional reactor immediately after formation of the pellets and enzyme production takes place there.
• the pellets are formed in a novel reactor specially developed for the process according to the invention.
• This is a stirreric, closed fermentation vessel "which is freely rotatably and pivotally suspended in a gimbal suspension device.
• a drive motor is arranged under the vessel, the drive shaft of which is connected to the bottom of the vessel with an eccentric.
• the angle of inclination and oscillation amplitude of the vessel can be set by the eccentric. Rotating and swiveling movements of the vessel can thus be achieved by means of the continuously variable motor.
• Phanerochaete chrysosporium forms pellets without being continuously destroyed by mechanical influences. As a result, the pellets achieve an optimal shape for enzyme production.
• the very low-vibration cardanic suspension of the reactor also allows the construction of reactor volumes between 1 and 3 m 3 , the device described enables production of lignolytic enzymes on an industrial scale to be achieved with yields previously not considered possible.
• the pellets of Phanerochaete chrysosporium which have been separated off can be used again immediately for the enzyme production.
• the pellets are expediently separated from the remaining suspension and, after the enzyme has been separated off, returned to the stirred reactor or new nitrogen-poor or nitrogen-free substrate without a C source is added.
• the separation can be carried out by means of ultrafiltration.
• Phanerochaete chrysosporium can be e.g. grown in Petri dishes or in stand cultures. The mycelia formed are subsequently broken up and used in the process according to the invention.
• Phanerochaete chrysosporium is grown under known conditions, i.e. it is usually carried out at temperatures of 37 to 40 ° C and a pH of 4.5 to 5. The preferred pH is 5. During the cultivation of Phanerochaete chrysosporium, aeration can be carried out continuously or discontinuously. Either pure oxygen or compressed air can be used here.
• the invention is described in more detail below with reference to the figure:
• the figure shows the reactor which is used to produce the pellets of Phanerochaete chrysosporium.
• the pellets are formed in the vessel 1.
• the vessel 1 is a closed container with a solid bottom 8, side walls, lid 9 and a viewing window 7. On the side or on the bottom there are openings for various sensors (O 2 , PH, anti-foam) and for inflow and outflow of
• Substrate and vaccine culture provided. It is suspended in a frame 11.
• the attachment is carried out by means of the gripping arms 10.
• the vessel 1 is freely rotatably and pivotably suspended from the gimbal suspension device.
• the rotation and pivoting movements are effected by the motor 6.
• This is connected to the bottom 8 of the vessel 1 via the drive shaft 5 and the eccentric 4.
• the inclination and vibration amplitude of the vessel 1 are set by means of the eccentric 4.
• the speed of the rotating and swiveling movements of the vessel 1 can be regulated via the engine speed.
• Phanerochaete chrysosporium ATCC 32629 is taken as the strain. First malt agar plates are inoculated and incubated at 27 ° C for about 10-12 days. Half of the lawn is removed from these plates and a 50 ml standing culture in 500 ml Erlenmeyer flask is inoculated (incubation time approx. 5 days at 37 ° C.). The preculture obtained in this way is decanted off, again to the original volume with a.dest. filled up and then in a Braun Starmix for 2 x 30 lake. crushed to level 3. 15 ml of pre-treatment are added per liter of medium in the shaking reactor, ie 75 ml onto a 10 1 shaking reactor with 5 1 filling. The cultivation temperature is 38 ° C. the shaking frequency 90 rpm and the deflection approx. 5 cm. It will every day for 30 lake. gassed with O 2 (100 1 per hour). The cultivation period is 4-5 days. The enzyme yields are approx.
• the media are composed as follows:
• composition per 1 1 medium 1 m NaH, PO 4 / Na, HPO 4 buffer.
• composition per 1 medium Composition per 1 medium:

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Wood Science & Technology (AREA)
• Zoology (AREA)
• Bioinformatics & Cheminformatics (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Genetics & Genomics (AREA)
• General Health & Medical Sciences (AREA)
• Microbiology (AREA)
• Biotechnology (AREA)
• Biochemistry (AREA)
• General Engineering & Computer Science (AREA)
• Biomedical Technology (AREA)
• Sustainable Development (AREA)
• Molecular Biology (AREA)
• Medicinal Chemistry (AREA)
• Enzymes And Modification Thereof (AREA)
• Preparation Of Compounds By Using Micro-Organisms (AREA)
• Apparatus Associated With Microorganisms And Enzymes (AREA)
• Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
• Developing Agents For Electrophotography (AREA)

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Publications (1)

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Citations (2)

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• 1990
  • 1990-04-21 DE DE4012743A patent/DE4012743C1/de not_active Expired - Lifetime
  • 1990-12-22 DK DK90125381.5T patent/DK0453656T3/da active
  • 1990-12-22 AT AT90125381T patent/ATE133199T1/de not_active IP Right Cessation
  • 1990-12-22 EP EP90125381A patent/EP0453656B1/de not_active Expired - Lifetime
  • 1990-12-22 ES ES90125381T patent/ES2084645T3/es not_active Expired - Lifetime
  • 1990-12-22 DE DE59010075T patent/DE59010075D1/de not_active Expired - Fee Related
• 1991
  • 1991-04-15 HU HU9203291A patent/HUT65661A/hu unknown
  • 1991-04-15 JP JP91506890A patent/JPH05505724A/ja active Pending
  • 1991-04-15 FI FI924743A patent/FI924743L/fi not_active Application Discontinuation
  • 1991-04-15 CA CA002080900A patent/CA2080900A1/en not_active Abandoned
  • 1991-04-15 BR BR919106365A patent/BR9106365A/pt not_active Application Discontinuation
  • 1991-04-15 WO PCT/EP1991/000712 patent/WO1991016414A1/de not_active Ceased
  • 1991-04-15 US US07/938,058 patent/US5278058A/en not_active Expired - Fee Related
  • 1991-04-15 AU AU76805/91A patent/AU654484B2/en not_active Ceased
• 1992
  • 1992-10-15 NO NO92924003A patent/NO924003L/no unknown
• 1996
  • 1996-04-17 GR GR960401044T patent/GR3019663T3/el unknown

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