GB778575A - Improvements in or relating to process for recovering glutamac acid - Google Patents

Improvements in or relating to process for recovering glutamac acid

Info

Publication number
GB778575A
GB778575A GB8273/56A GB827356A GB778575A GB 778575 A GB778575 A GB 778575A GB 8273/56 A GB8273/56 A GB 8273/56A GB 827356 A GB827356 A GB 827356A GB 778575 A GB778575 A GB 778575A
Authority
GB
United Kingdom
Prior art keywords
acid
barium
glutamic acid
filtrate
recovering
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
GB8273/56A
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.)
International Minerals and Chemical Corp
Original Assignee
International Minerals and Chemical Corp
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 International Minerals and Chemical Corp filed Critical International Minerals and Chemical Corp
Publication of GB778575A publication Critical patent/GB778575A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Glutamic acid is obtained from waste liquors containing precursors of glutamic acid (e.g. pyrrolidonecarboxylic acid) which are obtained after removal of sugar from beet molasses and which have a dry solids content of between 25 and 55 per cent by weight, by hydrolysing said liquors with barium hydroxide at an elevated temperature, adding to the resulting hydrolysate a compound which forms a water-insoluble salt with barium, and crystallizing and recovering glutamic acid from the resulting solution. The waste liquor may be barium filtrate, Steffen's filtrate or vinasse. The hydrolysis step is preferably carried out at a temperature of between 65 DEG and 100 DEG C. Compounds forming insoluble salts with the barium are preferably carbon dioxide, sulphur dioxide, sulphuric acid and alkali metal carbonates, bicarbonates and sulphites, these compounds being added until a pH of between 8.0 and 12.0 is reached. The barium-free hydrolysate may be adjusted to a pH of 3.2 with, for example, sulphuric acid and glutamic acid crystallized therefrom or, alternatively, using stronger acid, the glutamic acid may be recovered in the form of its acid salt, for example the hydrochloride.
GB8273/56A 1955-04-13 1956-03-16 Improvements in or relating to process for recovering glutamac acid Expired GB778575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US778575XA 1955-04-13 1955-04-13

Publications (1)

Publication Number Publication Date
GB778575A true GB778575A (en) 1957-07-10

Family

ID=22140465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8273/56A Expired GB778575A (en) 1955-04-13 1956-03-16 Improvements in or relating to process for recovering glutamac acid

Country Status (2)

Country Link
BE (1) BE546992A (en)
GB (1) GB778575A (en)

Also Published As

Publication number Publication date
BE546992A (en)

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