DE636135C - Process for the production of citric acid - Google Patents

Process for the production of citric acid

Info

Publication number
DE636135C
DE636135C DEB156771D DEB0156771D DE636135C DE 636135 C DE636135 C DE 636135C DE B156771 D DEB156771 D DE B156771D DE B0156771 D DEB0156771 D DE B0156771D DE 636135 C DE636135 C DE 636135C
Authority
DE
Germany
Prior art keywords
citric acid
production
acid
yeast
acetic acid
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
DEB156771D
Other languages
German (de)
Inventor
Dr Heinrich Wieland
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.)
CH Boehringer Sohn AG and Co KG
Original Assignee
CH Boehringer Sohn AG and Co KG
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 CH Boehringer Sohn AG and Co KG filed Critical CH Boehringer Sohn AG and Co KG
Priority to DEB156771D priority Critical patent/DE636135C/en
Application granted granted Critical
Publication of DE636135C publication Critical patent/DE636135C/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)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Description

Verfahren zur Gewinnung von Citronensäure Citronensäure ist, bisher hergestellt worden aus Citrusfrüchten oder aus Zucker mit Hilfe von Schimmelpilzen. Eine neue Quelle für Citronensäure hat sich ergeben aus der Beobachtung, daß Hefen, z. B. Bierhefen, Weinhefen, Apiculatus-, Torula-, Monili.a-, Mycodermahefen u. dgl., imstande sind, aus Essigsäure und Sauerstoff Citroneusäure zu bilden. Die Essigsäure kann als freie Säure, so wie sie z. B. durch natürliche Säuerung entsteht, oder als Salz eingesetzt werden. Neben der Citronensäure entstehen dabei noch beträchtliche-Mengen Bernsteinsäure. Wesentlich für einen genügenden Sauerstoffumsatz der Hefen ist, die Hefezellen reichlich mit dem Sauerstoff in Berührung zu bringen durch Rühren, geeignetes Umpumpen o. dgl.Process for obtaining citric acid is citric acid, so far made from citrus fruits or from sugar with the help of molds. A new source of citric acid has emerged from the observation that yeasts, z. B. Brewer's yeast, wine yeast, Apiculatus, Torula, Monili.a-, Mycoderma yeast and the like., are able to form citric acid from acetic acid and oxygen. The acetic acid can be used as a free acid, such as B. arises through natural acidification, or can be used as salt. In addition to the citric acid, considerable amounts are also produced Succinic acid. It is essential for the yeast to have sufficient oxygen turnover to bring the yeast cells into ample contact with the oxygen by stirring, suitable pumping or the like.

Beispiel, iokg Bierhefe Beerden in ioool einer wäBrigen etwa i/5 n-Natriumacetat-oder Calciumacetatlösung suspendiert und die Mischung so umgepumpt, daß mit der Lösung reichlich Luft in die Pumpe eingezogen wird. Nach 12 Stunden ist ein Großteil derEssigsäure verschwunden. Dafür enthält die Lösung auf 6 kg verbrauchter Essigsäure 85o g Citronensäure sowie 2,30 g Bernsteinsäure. Der Rest der Essigsäurq wird zu CO, verbrannt. Die Isolierung der beiden Säuren aus ihren Salzen geschieht auf dem dafür bekannten Wege.For example, 10 g of brewer's yeast berries are suspended in 10 ool of an aqueous approximately 1 / 5N sodium acetate or calcium acetate solution and the mixture is pumped around in such a way that ample air is drawn into the pump with the solution. Most of the acetic acid has disappeared after 12 hours. The solution contains 85o g citric acid and 2.30 g succinic acid for every 6 kg of acetic acid used. The rest of the acetic acid is burned to form CO. The two acids are isolated from their salts in the known way.

Claims (1)

PATENTANSPRUCH: Verfahren zur Gewinnung von Citronensäure, dadurch gekennzeichnet, daß man verdünnte Essigsäure oder Salze derselben in Gegenwart von Hefen durch reichliches Lüften mit Sauerstoff behandelt.PATENT CLAIM: Process for the production of citric acid, thereby characterized in that one dilute acetic acid or salts thereof in the presence of Treated yeasts by abundant ventilation with oxygen.
DEB156771D 1932-07-29 1932-07-29 Process for the production of citric acid Expired DE636135C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB156771D DE636135C (en) 1932-07-29 1932-07-29 Process for the production of citric acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB156771D DE636135C (en) 1932-07-29 1932-07-29 Process for the production of citric acid

Publications (1)

Publication Number Publication Date
DE636135C true DE636135C (en) 1936-10-02

Family

ID=7003588

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB156771D Expired DE636135C (en) 1932-07-29 1932-07-29 Process for the production of citric acid

Country Status (1)

Country Link
DE (1) DE636135C (en)

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