Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Patent
1986-03-12
1988-10-18
Raymond, Richard L.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
548497, 426 2, C07D20920, A61K 31405
Patent
active
047788089
ABSTRACT:
A feed additive produced by concentrating an aqueous solution containing tryptophan and impurities both originating in the culture broth of a tryptophan-producing microorganism, with the pH of the aqueous solution being maintained in the range of 4 to 6 and the temperature thereof being maintained in the range of 20.degree. to 80.degree. C. during the process of concentrating.
Ikeda Shigeho
Nagano Yoshimi
Naruse Masayoshi
Sano Chiaki
Tanaka Kiyoshi
Ajinomoto Co. Inc.
Raymond Richard L.
Springer D. B.
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