FR2336477A1 - Citric acid prodn. by fermentation of sugar beet or date molasses - using Aspergillus niger of Mucor piriformis sp. organism - Google Patents

Citric acid prodn. by fermentation of sugar beet or date molasses - using Aspergillus niger of Mucor piriformis sp. organism

Info

Publication number
FR2336477A1
FR2336477A1 FR7633608A FR7633608A FR2336477A1 FR 2336477 A1 FR2336477 A1 FR 2336477A1 FR 7633608 A FR7633608 A FR 7633608A FR 7633608 A FR7633608 A FR 7633608A FR 2336477 A1 FR2336477 A1 FR 2336477A1
Authority
FR
France
Prior art keywords
citric acid
organism
aspergillus niger
molasses
fermentation
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.)
Granted
Application number
FR7633608A
Other languages
French (fr)
Other versions
FR2336477B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2336477A1 publication Critical patent/FR2336477A1/en
Application granted granted Critical
Publication of FR2336477B1 publication Critical patent/FR2336477B1/fr
Granted 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

Fermentative prodn. of citric acid uses as substrate sugarbett molasses and/or date molasses. The micro-organism is Aspergillus niger strain 1015, 10577, 11414, 12846, 9142, 13794 or 26036, or Mucor piriformis 16296, or a mutant thereof. Pref. the substrate is treated with potassium ferrocyanide before culture, to remove trace heavy metals. Pref. the pH of the medium is adjusted during culture (pref. after 24 hrs.) to is not >3, esp. pH 2.7. Citric acid yields are high and oxalic acid by-prodn. is reduced, e.g. 95% of total acid produced is citric acid.
FR7633608A 1975-12-25 1976-11-08 Citric acid prodn. by fermentation of sugar beet or date molasses - using Aspergillus niger of Mucor piriformis sp. organism Granted FR2336477A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IR135414092 1975-12-25

Publications (2)

Publication Number Publication Date
FR2336477A1 true FR2336477A1 (en) 1977-07-22
FR2336477B1 FR2336477B1 (en) 1978-06-30

Family

ID=83195939

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7633608A Granted FR2336477A1 (en) 1975-12-25 1976-11-08 Citric acid prodn. by fermentation of sugar beet or date molasses - using Aspergillus niger of Mucor piriformis sp. organism

Country Status (1)

Country Link
FR (1) FR2336477A1 (en)

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, VOLUME 72, REF. 53 755 T CITE CS 130 943 *
CHEMICAL ABSTRACTS, VOLUME 84, REF. 178 161 A *
CHEMICAL ABSTRACTS, VOLUME 84, REFE. 178 162 B) *

Also Published As

Publication number Publication date
FR2336477B1 (en) 1978-06-30

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