发明授权
US07439392B2 Separation of citric acid from gluconic acid in fermentation broth using a weakly or strongly basic anionic exchange resin adsorbent
有权
使用弱碱性或强碱性阴离子交换树脂吸附剂在发酵液中分离柠檬酸与葡萄糖酸
- 专利标题： Separation of citric acid from gluconic acid in fermentation broth using a weakly or strongly basic anionic exchange resin adsorbent
- 专利标题（中）： 使用弱碱性或强碱性阴离子交换树脂吸附剂在发酵液中分离柠檬酸与葡萄糖酸
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申请号： US11757610申请日： 2007-06-04
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公开(公告)号： US07439392B2公开(公告)日： 2008-10-21
- 发明人: Santi Kulprathipanja
- 申请人： Santi Kulprathipanja
- 申请人地址： US IL Des Plaines
- 专利权人： UOP LLC
- 当前专利权人： UOP LLC
- 当前专利权人地址： US IL Des Plaines
- 代理机构： Maryann Maas
- 主分类号： C07C51/42
- IPC分类号： C07C51/42 ; C07C59/265
摘要：
Citric acid is separated from a fermentation broth containing gluconic acid by using an adsorbent comprising a water-insoluble, macroreticular or gel, strongly or weakly basic anionic exchange resin possessing quaternary or tertiary amine functional groups, said a anionic exchange resin having a cross-linked acrylic or styrene resin matrix and a desorbent comprising water or dilute sulfuric acid. The pH of the feed is maintained below the first ionization constant (pKa1) of citric acid to maintain selectivity.
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