Title:
【発明の名称】S-メチルメルカプト化合物を脱メチル化する方法
Document Type and Number:
Japanese Patent JPH10502824
Kind Code:
A
Abstract:
PCT No. PCT/EP95/02883 Sec. 371 Date Jan. 8, 1997 Sec. 102(e) Date Jan. 8, 1997 PCT Filed Jul. 19, 1995 PCT Pub. No. WO96/03518 PCT Pub. Date Feb. 8, 1996The invention concerns a process for preparing mercapto compounds comprising the step of demethylating an S-methyl-mercapto compound of Formula I to the corresponding mercapto compound of Formula II, using a microorganism which is capable of demethylating S-methyl-3-mercapto-propionate (MMPA) to 3-mercaptopropionate (MPA) or using an enzyme preparation derivable from such microorganism. Preferably the group R denotes CH2-CH2-COOH (I is MMPA), CH2-CH(NH2)-COOH (I is S-methyl-cystein), CH2-CH2-CH(NH2)-COOH (I is methionine) and CH2-COOH (I is methylmercapto-acetate) or a salt or ester of any of these. Preferably the microorganisms are methanogenic archaea of the genus Methanosarcina or obtained by inocculating a suitable medium containing MMPA with salt marsh or marine sediment followed by one or more transfers into fresh medium containing MMPA and suppression of the growth of Bacteria, but not of Archaea in the culture e.g. with an antibiotic.
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Inventors:
Hansen, Theo Adrien
Jansen, Michael
Juan Del Marrell, Marc Yos A Se
Jansen, Michael
Juan Del Marrell, Marc Yos A Se
Application Number:
JP50545296A
Publication Date:
March 17, 1998
Filing Date:
July 19, 1995
Export Citation:
Assignee:
Qwest International B.B.
International Classes:
C12N9/10; C12P11/00; C12P13/00; C12P13/04; C12R1/01; (IPC1-7): C12P11/00; C12N9/10; C12P13/00
Attorney, Agent or Firm:
Yoshio Kawaguchi (3 outside)