GB903312A - Improvements in or relating to the production of l-tryptophan - Google Patents

Improvements in or relating to the production of l-tryptophan

Info

Publication number
GB903312A
GB903312A GB929560A GB929560A GB903312A GB 903312 A GB903312 A GB 903312A GB 929560 A GB929560 A GB 929560A GB 929560 A GB929560 A GB 929560A GB 903312 A GB903312 A GB 903312A
Authority
GB
United Kingdom
Prior art keywords
specified
organism
micro
cells
amino group
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
GB929560A
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.)
Ajinomoto Co Inc
Original Assignee
Ajinomoto Co 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 Ajinomoto Co Inc filed Critical Ajinomoto Co Inc
Publication of GB903312A publication Critical patent/GB903312A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/04—Indoles; Hydrogenated indoles
    • C07D209/10—Indoles; Hydrogenated indoles with substituted hydrocarbon radicals attached to carbon atoms of the hetero ring
    • C07D209/18—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D209/20—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals substituted additionally by nitrogen atoms, e.g. tryptophane

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

L-Tryptophan is prepared by reacting 3-indolepyruvic acid with an amino group source in a neutral or slightly alkaline aqueous medium at a temperature of between 25 and 40 DEG C., in the presence of cells of a species of micro-organism of the genus Micrococcus, Serratia, Flavobacterium, Pseudomonas, Bacillus, Escherichia or Aerobacter, together with a monosaccharide and/or organic acid and magnesium ions. The cells of the micro-organism may be supplied dry or intact, or as a cultured broth. Amino group sources specified are ammonium chloride, sulphate or nitrate, urea and organic nitrogen containing materials. Monosaccharides specified are glucose, fructose, lactose, maltose, sucrose and pentose. Organic acids specified are citric and tartaric acids. Surface-active agents may also be added to the reaction medium. Specified microorganisms are M. ureae, rubens, luteus ATCC.398 and lysodeikticus ATCC.4698; S. marcesceus; F. arboresceus; P. docunhoe and riboflavinus; B. cereus and megatherium; E. coli; and A. cloacae and aerogenes.
GB929560A 1959-03-17 1960-03-16 Improvements in or relating to the production of l-tryptophan Expired GB903312A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP856559 1959-03-17

Publications (1)

Publication Number Publication Date
GB903312A true GB903312A (en) 1962-08-15

Family

ID=11696580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB929560A Expired GB903312A (en) 1959-03-17 1960-03-16 Improvements in or relating to the production of l-tryptophan

Country Status (1)

Country Link
GB (1) GB903312A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147580A (en) * 1983-08-05 1985-05-15 Grace W R & Co Improved process for producing L-amino acids from alpha-keto acids by fed-batch fermentation
GB2147579A (en) * 1983-08-05 1985-05-15 Grace W R & Co Production of L-amino acids from alpha-keto acids by fermentation
EP1225230A1 (en) * 2001-01-19 2002-07-24 Ajinomoto Co., Ltd. Methods for producing L-amino acids

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147580A (en) * 1983-08-05 1985-05-15 Grace W R & Co Improved process for producing L-amino acids from alpha-keto acids by fed-batch fermentation
GB2147579A (en) * 1983-08-05 1985-05-15 Grace W R & Co Production of L-amino acids from alpha-keto acids by fermentation
EP1225230A1 (en) * 2001-01-19 2002-07-24 Ajinomoto Co., Ltd. Methods for producing L-amino acids
US7045320B2 (en) 2001-01-19 2006-05-16 Ajinomoto Co., Inc. Methods for producing L-amino acids

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