GB844952A - Process for resolution of glutamic acid - Google Patents

Process for resolution of glutamic acid

Info

Publication number
GB844952A
GB844952A GB14566/57A GB1456657A GB844952A GB 844952 A GB844952 A GB 844952A GB 14566/57 A GB14566/57 A GB 14566/57A GB 1456657 A GB1456657 A GB 1456657A GB 844952 A GB844952 A GB 844952A
Authority
GB
United Kingdom
Prior art keywords
glutamic acid
solution
supersaturated
racemic
optically active
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
GB14566/57A
Inventor
Tetsuo Ogawa
Takekazu Akashi
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
Priority to GB14566/57A priority Critical patent/GB844952A/en
Publication of GB844952A publication Critical patent/GB844952A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C227/38—Separation; Purification; Stabilisation; Use of additives
    • C07C227/40—Separation; Purification
    • C07C227/42—Crystallisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention comprises a process for obtaining L-glutamic acid and D-glutamic acid in succession by resolution of racemic glutamic acid in a solution containing racemic glutamic acid, water, and mineral acid or alkali, which comprises making and maintaining the solution supersaturated with respect to anhydrous glutamic acid at above 20 DEG C., inoculating the supersaturated solution with crystal seeds of one of the optically active forms of glutamic acid, maintaining the supersaturated state of the solution as the inoculated seeds grow under agitation, removing the multiplied crystals from the solution, adding racemic glutamic acid to the mother liquid to restore the supersaturated state at above 20 DEG C., repeating the inoculation with the other optically active isomer of glutamic acid, separating the multiplied crystals, and repeating the above steps successively in cycles. The supersaturated state may be produced and maintained by addition of racemic glutamic acid monohydrate as a solid phase, or by cooling, evaporation, or partial neutralisation, or by combinations of these methods. When hydrochloric acid or ammonia is used as the third component in the supersaturated solution, seeding is effected with optically active glutamic acid hydrochloride or monoammonium glutamate respectively. Specification 773,661 is referred to.
GB14566/57A 1957-05-07 1957-05-07 Process for resolution of glutamic acid Expired GB844952A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB14566/57A GB844952A (en) 1957-05-07 1957-05-07 Process for resolution of glutamic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14566/57A GB844952A (en) 1957-05-07 1957-05-07 Process for resolution of glutamic acid

Publications (1)

Publication Number Publication Date
GB844952A true GB844952A (en) 1960-08-17

Family

ID=10043541

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14566/57A Expired GB844952A (en) 1957-05-07 1957-05-07 Process for resolution of glutamic acid

Country Status (1)

Country Link
GB (1) GB844952A (en)

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