GB1428440A - Fermentative production of citric acid - Google Patents

Fermentative production of citric acid

Info

Publication number
GB1428440A
GB1428440A GB2013975A GB2013975A GB1428440A GB 1428440 A GB1428440 A GB 1428440A GB 2013975 A GB2013975 A GB 2013975A GB 2013975 A GB2013975 A GB 2013975A GB 1428440 A GB1428440 A GB 1428440A
Authority
GB
United Kingdom
Prior art keywords
yeast
zone
citric acid
paraffin
dec
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.)
Expired
Application number
GB2013975A
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.)
RECH ET DACITIVITES PETROLIERE
IFP Energies Nouvelles IFPEN
Original Assignee
RECH ET DACITIVITES PETROLIERE
IFP Energies Nouvelles IFPEN
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 RECH ET DACITIVITES PETROLIERE, IFP Energies Nouvelles IFPEN filed Critical RECH ET DACITIVITES PETROLIERE
Publication of GB1428440A publication Critical patent/GB1428440A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P7/00—Preparation of oxygen-containing organic compounds
    • C12P7/40—Preparation of oxygen-containing organic compounds containing a carboxyl group including Peroxycarboxylic acids
    • C12P7/44—Polycarboxylic acids
    • C12P7/48—Tricarboxylic acids, e.g. citric acid

Landscapes

  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Zoology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Microbiology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biotechnology (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

1428440 Citric acid INSTITUT FRANCAIS DU PETROLE and ENTREPRISE DE RECHERCHES ET D'ACTIVITES PETROLIERES (ELF) 6 Dec 1973 [8 Dec 1972] 20139/75 Divided out of 1428439 Heading C2C Citric acid is prepared by a continuous fermentation process in which a yeast is cultured in a first aerated fermentation zone containing at least one n-paraffin, at a dilution rate of 0À05 to 0À3 h.<SP>-l</SP>, and introducing the yeast culture to a second aerated fermentation zone with nutrient medium including at least one n-paraffin and with assimilable inorganic nitrogen in growth-liberating amount while maintaining a yeast growth rate of 0À01 to 0À04 h.<SP>-l</SP>, and recovering the citric acid accumulated in the second zone. The volume of the second zone is preferably from 5 to 20 times the volume in the first zone in which the pH is maintained at 2À5 to 6. The yeast cells are preferably concentrated by separating from the medium before the second stage. Yeast of genus Candida or mutant strains thereof may be used and α-picolinic acid may be added to the second stage.
GB2013975A 1972-12-08 1973-12-06 Fermentative production of citric acid Expired GB1428440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7243936A FR2209840B1 (en) 1972-12-08 1972-12-08

Publications (1)

Publication Number Publication Date
GB1428440A true GB1428440A (en) 1976-03-17

Family

ID=9108468

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2013975A Expired GB1428440A (en) 1972-12-08 1973-12-06 Fermentative production of citric acid

Country Status (2)

Country Link
FR (1) FR2209840B1 (en)
GB (1) GB1428440A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3140170A1 (en) 2022-09-28 2024-03-29 Psa Automobiles Sa METHOD FOR DETECTING AN UNWANTED LIQUID IN AN ELECTRICAL ASSEMBLY.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR930746A (en) * 1945-07-17 1948-02-03 Merck & Co Inc Manufacturing process of citric acid and its salts

Also Published As

Publication number Publication date
FR2209840B1 (en) 1975-03-28
FR2209840A1 (en) 1974-07-05

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee