公开(公告)号：US20050281913A1

公开(公告)日：2005-12-22

申请号：US11153465

申请日：2005-06-16

申请人： Jan van Krieken ,  Roelf Otto ,  Gerrit Nanninga ,  Johannes de Vries

发明人： Jan van Krieken ,  Roelf Otto ,  Gerrit Nanninga ,  Johannes de Vries

IPC分类号： A21D2/14 ,  C07C51/02 ,  C07C51/41 ,  C12P7/56

CPC分类号： C12P7/56 ,  C07C51/02 ,  C07C51/412 ,  C07C59/08

摘要： The present invention relates to an improved process for the preparation of lactic acid and or lactate from a magnesium lactate comprising medium. In said process, magnesium lactate is reacted with a hydroxide of sodium, calcium, and/or ammonium at a pH range between 9 and 12, preferably between 9.9 and 11, to form a lactate of sodium, potassium, calcium and/or ammonia and magnesium hydroxide. With the process according to the invention a lactate salt is formed and magnesium hydroxide. It is essential that said so-called SWAP reaction is conducted within a specific pH range: It was found that when conducting the SWAP reaction at a pH range between 9 and 12 magnesium hydroxide particles are formed which can easily be separated from the lactate salt solution formed.

摘要翻译： 本发明涉及由含有乳酸镁的培养基制备乳酸和/或乳酸的改进方法。 在所述方法中，将乳酸镁与钠，钙和/或铵的氢氧化物在9至12之间，优选在9.9至11之间的pH范围内反应，形成钠，钾，钙和/或氨的乳酸盐， 氢氧化镁。 按照本发明的方法，形成乳酸盐和氢氧化镁。 所谓的SWAP反应必须在特定的pH范围内进行：发现当在9-12的pH范围内进行SWAP反应时，形成氢氧化镁颗粒，其可以容易地从乳酸盐溶液中分离出来 形成。