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    • 12. 发明授权
    • Method for purification of amino acid
    • 氨基酸纯化方法
    • US07473801B2
    • 2009-01-06
    • US11547124
    • 2005-04-06
    • Yoshikazu TakamatsuMinoru YamamotoYoshinari Sato
    • Yoshikazu TakamatsuMinoru YamamotoYoshinari Sato
    • C07C227/00
    • C07C227/40C07C319/28C07C229/16C07C229/08C07C323/58
    • The present invention provides a method for purifying an amino acid contained in an aqueous solution of alkali metal salt of amino acid comprising the steps of: (1) cation exchanging, which comprises subjecting an aqueous solution of alkali metal salt of amino acid to a desalting purification treatment using a moving bed type continuous ion exchange apparatus comprising a cation exchange resin to obtain an aqueous solution of crude amino acid; and (2) anion exchanging, which comprises adsorbing to a weakly basic anion exchange resin an iminodicarboxylic acid, which is a coexisting by-product, in the resulting aqueous solution of crude amino acid to remove the iminodicarboxylic acid, wherein the aqueous solution of crude amino acid is passed even after adsorbing the iminodicarboxylic acid to the break through point of the weakly basic anion exchange resin.
    • 本发明提供一种纯化氨基酸碱金属盐水溶液中含有的氨基酸的方法,包括以下步骤:(1)阳离子交换,其包括使氨基酸的碱金属盐水溶液进行脱盐 使用包含阳离子交换树脂的移动床型连续离子交换装置进行净化处理,以获得粗氨基酸的水溶液; 和(2)阴离子交换,其包括在所得的粗氨基酸水溶液中吸附作为共存副产物的弱碱性阴离子交换树脂亚氨基二羧酸以除去亚氨基二羧酸,其中将粗制水溶液 即使将亚氨基二羧酸吸附到弱碱性阴离子交换树脂的断裂点,氨基酸也通过。
    • 14. 发明申请
    • Method for Purification of Amino Acid
    • 氨基酸纯化方法
    • US20080045746A1
    • 2008-02-21
    • US11547124
    • 2005-04-06
    • Yoshikazu TakamatsuMinoru YamamotoYoshinari Sato
    • Yoshikazu TakamatsuMinoru YamamotoYoshinari Sato
    • C07C227/40C07C319/28
    • C07C227/40C07C319/28C07C229/16C07C229/08C07C323/58
    • The present invention provides a method for purifying an amino acid contained in an aqueous solution of alkali metal salt of amino acid comprising the steps of: (1) cation exchanging, which comprises subjecting an aqueous solution of alkali metal salt of amino acid to a desalting purification treatment using a moving bed type continuous ion exchange apparatus comprising a cation exchange resin to obtain an aqueous solution of crude amino acid; and (2) anion exchanging, which comprises adsorbing to a weakly basic anion exchange resin an iminodicarboxylic acid, which is a coexisting by-product, in the resulting aqueous solution of crude amino acid to remove the iminodicarboxylic acid, wherein the aqueous solution of crude amino acid is passed even after adsorbing the iminodicarboxylic acid to the break through point of the weakly basic anion exchange resin.
    • 本发明提供一种纯化氨基酸碱金属盐水溶液中含有的氨基酸的方法,包括以下步骤:(1)阳离子交换,其包括使氨基酸的碱金属盐水溶液进行脱盐 使用包含阳离子交换树脂的移动床型连续离子交换装置进行净化处理,以获得粗氨基酸的水溶液; 和(2)阴离子交换,其包括在所得的粗氨基酸水溶液中吸附作为共存副产物的弱碱性阴离子交换树脂亚氨基二羧酸以除去亚氨基二羧酸,其中将粗制水溶液 即使将亚氨基二羧酸吸附到弱碱性阴离子交换树脂的断裂点,氨基酸也通过。