| 摘要 |
PURPOSE:To purify tyrosine by simple procedures, by bringing a tyrosine solution containing phenylalanine as a main impurity into contact with a nonpolar porous synthetic adsorbent. CONSTITUTION:A tyrosine solution containing phenylalanine as a main impurity is brought into contact with a nonpolar porous synthetic intermediate, e.g. HP 10, HP 20 or SP 207 (manufactured by Mitsubishi Chemical Industries Ltd.) or XFS-4022 (manufactured by Dow Chemical Co.) to adsorb the phenylalanine thereon and give the purified tyrosine containing no phenylalanine or with remarkably reduced concentration thereof. The above-mentioned method is preferably carried out by the column method.
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