C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/319.5
C07D 209/20 (2006.01) C12N 1/02 (2006.01) C12P 13/04 (2006.01) C12P 13/06 (2006.01) C12P 13/22 (2006.01)
Patent
CA 1215069
Title of the Invention METHOD OF ISOLATING L-TRYPTOPHAN Abstract of the Disclosure When an L-tryptophan-containing reaction mixture produced by a reaction involving the use of a microorganism is treated with an H-type strongly acidic cation exchange resin without removing the microorganism from it, the L-tryptophan is adsorbed on the ion exchange resin and the microorganism is floc- culated on the ion exchange resin. The flocculated microorganism is easily removed by washing the ion exchange resin. The adsorbed L-tryptophan is eluted from the ion exchange resin and purified to a high purity.
444165
Kawashima Nobuhiro
Kawashima Nobuyuki
Nagai Syosuke
Ohoka Masaharu
Takano Takao
Mitsui Chemicals Incorporated
Smart & Biggar
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