| 摘要 |
A process for the recovery of further pure monosodium glutamate from a discoloured monosodium glutamate mother liquor obtained by crystallizing and separating pure monosodium glutamate from a monosodium salt solution of glutamic acid comprises (a) contacting the monosodium glutamate mother liquor with a weak base anion exchange resin in the hydroxide form, whereby at least some of the coloured material present is separated from the mother liquor, and (b) crystallizing and separating pure monosodium glutamate from the at least partially decolourized mother liquor resulting from (a). The process provides a simple and not too expensive technique for recovering the further pure monosodium glutamate.
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