Preparation of lactates
    1.
    发明授权
    Preparation of lactates 失效
    乳酸盐的制备

    公开(公告)号:US5453365A

    公开(公告)日:1995-09-26

    申请号:US342002

    申请日:1994-11-16

    CPC分类号: C12P7/56 C07C59/08 C07C67/08

    摘要: A process for the preparation of lactates by fermentation of mixtures containing sugars, conversion of the lactic acid obtained during fermentation to its salts, followed by esterification, in whicha) there is added to the fermentation liquor an alkaline earth metal carbonate or bicarbonate so as to neutralize the resultant lactic acid to a degree of at least 90 mol %,b) the resulting fermentation liquor is adjusted to pH 7 to 13 by the addition of NH.sub.3 and CO.sub.2 and the resultant precipitates are separated, andc) the resulting, purified ammonium lactate solution is esterified with an alcohol.

    摘要翻译: 通过发酵含糖混合物的发酵制备乳酸盐的方法,将发酵过程中获得的乳酸转化为其盐,然后酯化,其中a)向发酵液中加入碱土金属碳酸盐或碳酸氢盐,以便 将所得乳酸中和至至少90mol%的程度,b)通过加入NH 3和CO 2将得到的发酵液调节至pH7至13,分离出所得沉淀,和c)得到的纯化 乳酸铵溶液用酒精酯化。