R-(-)-Mandelic Acid Production from Racemic Mandelic Acids by Pseudomonas polycolor with Asymmetric Degrading Activity
スポンサーリンク
概要
- 論文の詳細を見る
The microbial asymmetric degradation of S-(+)-mandelic acid was investigated in order to develop a practical process for R-(-)-mandelic acid production from racemic mandelic acids. Among the 790 culture strains tested, microorganisms belonging to the Brevibacterium, Pseudomonas, Rhodococcus, Rhodotorula, Rhodosporidium, Sporobolomyces and Gibberella genera exhibited high S-(+)-mandelic acid degrading activity. Pseudomonas polycolor IFO 3918 was determined to be the best strain and used as a biocatalyst for eliminating the S-(+)-isomer. The maximum rate of S-(+)-isomer degradation was obtained at 30℃ and pH 7.0. Under these optimal conditions, the S-(+)-isomer in a racemic mandelic acid 45 g/l mixture was completely degraded within 24 h, with 20 g of R-(-)-mandelic acid per liter remaining in the reaction mixture. Crystalline R-(-)-mandelic acid with a chemical purity greater than 99% and optical purity of 99.9% enantiomeric excess was obtained at a yield of 35% by acidification of the reaction mixture, extraction with ethyl acetate and subsequent concentration.
- 公益社団法人日本生物工学会の論文
- 1995-05-25
著者
-
Takahashi E
Waseda Univ. Tokyo Jpn
-
TAKAHASHI EIJI
Production Technology Division, Tanabe Seiyaku Co. Ltd.,
-
NAKAMICHI KATSUHIKO
Production Technology Divition, Tanabe Seiyaku Co. Ltd.,
-
FURUI MASAKATSU
Production Technology Division, Tanabe Seiyaku Co. Ltd.,
-
MORI TAKAO
Production Technology Division, Tanabe Seiyaku Co. Ltd.,
-
Furui M
Tanabe Seiyaku Co. Ltd. Osaka Jpn
-
Nakamichi Katsuhiko
Production Technology Division Tanabe Seiyaku Co. Ltd.
-
Mori Takao
Production Technology Division Tanabe Seiyaku Co. Ltd.
関連論文
- Emission of Short Microwave Pulse Radiated by Interaction between Periodic Static Electric Field and Relativistic Ionization Front
- Enhancement of X-ray Enlission from a Cooled Kr Gas Jet Irradiated by an Ultrashort KrF Laser Pulse : Nuclear Sciences, Plasmas, and Electric Discharges
- Laser Wakefield in Low Density Plasma : Fluids, Plasmas, and Electric Discharges
- Production of Optically Active 3-Phenylglycidic Acid Ester by the Lipase from Serratia marcescens on a Hollow-Fiber Membrane Reactor
- R-(-)-Mandelic Acid Production from Racemic Mandelic Acids Using Pseudomonas polycolor IFO 3918 and Micrococcus freudenreichii FERM-P 13221
- R-(-)-Mandelic Acid Production from Racemic Mandelic Acids by Pseudomonas polycolor with Asymmetric Degrading Activity
- Lipase-Catalyzed Asymmetric Hydrolysis of 3-Phenylglycidic Acid Ester, the Key Intermediate in the Synthesis of Diltiazem Hydrochloride
- A Membrane Bioreactor Combined with Crystallizer for Production of Optically Active (2R, 3S)-3-(4-Methoxyphenyl)-Glycidic Acid Methyl Ester
- Horizontal Baffle Effects on Compaction of Immobilized Cell Catalyst Beds : Design of Industial Immobilized Cell Columns (I)