GB742972A - Improvements in or relating to the production of citric acid - Google Patents

Improvements in or relating to the production of citric acid

Info

Publication number
GB742972A
GB742972A GB32137/53A GB3213753A GB742972A GB 742972 A GB742972 A GB 742972A GB 32137/53 A GB32137/53 A GB 32137/53A GB 3213753 A GB3213753 A GB 3213753A GB 742972 A GB742972 A GB 742972A
Authority
GB
United Kingdom
Prior art keywords
copper
citric acid
fermentation
carbohydrate
incorporated
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
GB32137/53A
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.)
Bayer Corp
Original Assignee
Miles Laboratories Inc
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 Miles Laboratories Inc filed Critical Miles Laboratories Inc
Publication of GB742972A publication Critical patent/GB742972A/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

Abstract

Citric acid is produced by the submerged vegetative fermentation of a carbohydrate-containing medium by means of Aspergillus niger, in which copper in ionic form is incorporated into the carbohydrate-containing medium. Copper can advantageously be added as copper sulphate but may also be incorporated in the form of any salt soluble in the fermentation medium providing it does not have an undesirable anion. The copper eliminates the adverse effect of nutrient iron on cellular morphology. In the examples media containing (a) undeca tionized corn sugar, and (b) decationized corn sugar are subjected to submerged vegetative fermentation by means of Aspergillus niger in the presence of varying quantities of copper in ionic form. Specification 653,808 is referred to.
GB32137/53A 1953-01-05 1953-11-19 Improvements in or relating to the production of citric acid Expired GB742972A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US742972XA 1953-01-05 1953-01-05

Publications (1)

Publication Number Publication Date
GB742972A true GB742972A (en) 1956-01-04

Family

ID=22118827

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32137/53A Expired GB742972A (en) 1953-01-05 1953-11-19 Improvements in or relating to the production of citric acid

Country Status (1)

Country Link
GB (1) GB742972A (en)

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