发明授权
US5532015A Process for producing .alpha.-L-aspartyl-L-phenylalanine methyl ester
失效
制备α-L-天冬氨酰-L-苯丙氨酸甲酯的方法
- 专利标题： Process for producing .alpha.-L-aspartyl-L-phenylalanine methyl ester
- 专利标题（中）： 制备α-L-天冬氨酰-L-苯丙氨酸甲酯的方法
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申请号： US345469申请日： 1994-11-21
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公开(公告)号： US5532015A公开(公告)日： 1996-07-02
- 发明人: Atsuhiko Hirano , Satoshi Yamahara , Takehiko Kataoka , Shinichi Kishimoto
- 申请人： Atsuhiko Hirano , Satoshi Yamahara , Takehiko Kataoka , Shinichi Kishimoto
- 申请人地址： JPX Tokyo
- 专利权人： Ajinomoto Co., Inc.
- 当前专利权人： Ajinomoto Co., Inc.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX5-290453 19931119
- 主分类号： C07K1/14
- IPC分类号： C07K1/14 ; A23L27/30 ; C07K5/072 ; C07K5/075 ; F26B21/06 ; A23L1/236 ; C07C229/24
摘要：
A process for quickly and reproducibly obtaining .alpha.-L-aspartyl-L-phenylalanine methyl ester with controlled water content is disclosed. Wet crystals of .alpha.-L-aspartyl-L-phenylalanine methyl ester obtained by crystallization are subjected to a drying step to adjust the water content to not more than 5 wt %, and subsequently a gas adjusted to a temperature of 20-80.degree. C. and relative humidity of 20-90 RH % is contacted with the dried crystals to control water content.
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