公开(公告)号：KR810000970B1

公开(公告)日：1981-08-25

申请号：KR780000391

申请日：1978-02-16

Applicant: MITSUI TOATSU CHEMICALS

Inventor： SASA KOUJOU ,  ASAI YOSHIYUKI ,  MAKIKUCHI NOBUYOSHI ,  NAKAMURA MITSUYOSHI ,  ARITA MASANOBU

IPC: A23K1/18 ,  A23L17/00 ,  A23L1/325

Abstract: Luminescent material was prepd. by adhering, mixing, dispersing and sealing nutritive luminescent bacteria for fish in baits and fishing supplies. An luminescent bacterium was shake-cultured at 15oC for 20 hrs in a medium of pH 7.2 contg. meat ext. 0.3, polypeptone 1, glycerine 0.1 and NaCl 3 %. After dissolving Na alginate (8g) in the culture (200ml), the mixt. was dipped into 0.4M CaCl2 soln. and was allowed to stand at room temp. for 1 hr in order to obtain a luminescent gel conforming to a desired shape. The product was able to keep its luminescent power for 1 week in sea water of 10oC.

公开(公告)号：MX6037E

公开(公告)日：1984-10-08

申请号：MX880680

申请日：1980-05-09

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASAI YOSHIYUKI ,  SHIMADA MASAO ,  SODA KENJI

IPC: C07D209/20 ,  C12N9/88 ,  C12N9/90 ,  C12P13/06 ,  C12P13/22

Abstract: A process for the preparation of L-tryptophan comprises reacting indole with serine in the presence of tryptophan synthetase or tryptophanase, wherein DL-serine or D-serine is used and a serine racemizing enzyme is included in the reaction system and reacted with the serine.

公开(公告)号：CA1128443A

公开(公告)日：1982-07-27

申请号：CA350695

申请日：1980-04-25

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASAI YOSHIYUKI ,  SHIMADA MASAO ,  SODA KENJI

IPC: C07D209/20 ,  C12N9/88 ,  C12N9/90 ,  C12P13/06 ,  C12P13/22

Abstract: () Disclosed is a process for the preparation of L-tryptophan which comprises reacting indole with serine in the presence of tryptophan synthetase or tryptophanase, wherein DL-serine or D-serine is used and a serine racemizing enzyme is made present in the reaction system and reacted with the serine.

公开(公告)号：DE3017861A1

公开(公告)日：1981-01-22

申请号：DE3017861

申请日：1980-05-09

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASAI YOSHIYUKI ,  SHIMADA MASAO ,  SODA KENJI

IPC: C07D209/20 ,  C12N9/88 ,  C12N9/90 ,  C12P13/06 ,  C12P13/22

Abstract: A process for the preparation of L-tryptophan comprises reacting indole with serine in the presence of tryptophan synthetase or tryptophanase, wherein DL-serine or D-serine is used and a serine racemizing enzyme is included in the reaction system and reacted with the serine.

公开(公告)号：CH642947A5

公开(公告)日：1984-05-15

申请号：CH332780

申请日：1980-04-30

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASAI YOSHIYUKI ,  SHIMADA MASAO ,  SODA KENJI

IPC: C07D209/20 ,  C12N9/88 ,  C12N9/90 ,  C12P13/06 ,  C12P13/22

公开(公告)号：IT8048605D0

公开(公告)日：1980-05-07

申请号：IT4860580

申请日：1980-05-07

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASAI YOSHIYUKI ,  SHIMADA MASAO ,  SODA KENJI

IPC: C07D209/20 ,  C12N9/88 ,  C12N9/90 ,  C12P13/06 ,  C12P13/22 ,  C07D

Abstract: A process for the preparation of L-tryptophan comprises reacting indole with serine in the presence of tryptophan synthetase or tryptophanase, wherein DL-serine or D-serine is used and a serine racemizing enzyme is included in the reaction system and reacted with the serine.

公开(公告)号：AU530435B2

公开(公告)日：1983-07-14

申请号：AU5797980

申请日：1980-05-01

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASAI YOSHIYUKI ,  SHIMADA MASAO ,  SODA KENJI

IPC: C07D209/20 ,  C12N9/88 ,  C12N9/90 ,  C12P13/06 ,  C12P13/22 ,  C12R1/19 ,  C12R1/40

Abstract: A process for the preparation of L-tryptophan comprises reacting indole with serine in the presence of tryptophan synthetase or tryptophanase, wherein DL-serine or D-serine is used and a serine racemizing enzyme is included in the reaction system and reacted with the serine.

公开(公告)号：FR2456140A1

公开(公告)日：1980-12-05

申请号：FR8010249

申请日：1980-05-08

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASAI YOSHIYUKI ,  SHIMADA MASAO ,  SODA KENJI

IPC: C07D209/20 ,  C12N9/88 ,  C12N9/90 ,  C12P13/06 ,  C12P13/22

Abstract: A process for the preparation of L-tryptophan comprises reacting indole with serine in the presence of tryptophan synthetase or tryptophanase, wherein DL-serine or D-serine is used and a serine racemizing enzyme is included in the reaction system and reacted with the serine.

公开(公告)号：JPS5545307A

公开(公告)日：1980-03-31

申请号：JP11742678

申请日：1978-09-26

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NIUCHI KIYOAKI ,  SHIMADA MASAO ,  YONEMURA HIROKO ,  ASAI YOSHIYUKI

IPC: C12P13/22 ,  C12R1/01 ,  C12R1/07 ,  C12R1/185 ,  C12R1/19 ,  C12R1/22 ,  C12R1/37

Abstract: PURPOSE:To obtain L-tryptophan important for essential amino acids from an industrally available inexpensive material, by using an enzyme system produced by specific microorganisms. CONSTITUTION:Strains of microorganisms, e.g. Proteus vulgaris IFO3167, Escherichia coli IAM1268, or Aerobacter aerogenes IFO12019, which belong to the genuses Proteus, Escherichia, Aerobacter, Klebsiella or Bacillus, and have the ability to produce the L-tryptophan from indole, glycidic acid, and ammonia, are cultured in an L-tryptophan-containing nutrient medium. Indole, glycidic acid, and ammonia are subjected to the action of the culture thus obtained and live bacterium bodies which may be treated, to give L-tryptophan.

公开(公告)号：JPS5375384A

公开(公告)日：1978-07-04

申请号：JP14978276

申请日：1976-12-15

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASAI YOSHIYUKI ,  MAKIGUCHI NOBUYOSHI ,  ARITA MASANOBU ,  TAKAHASHI MACHIKO

IPC: C12N1/20 ,  C12R1/01

Abstract: PURPOSE:To prepare freezed preservating matter having high luminous ability by freezing a suspension of luminous bacterium in a suitable medium for growth of the bacterium.