用活性碳分离纯化苯丙氨酸的研究

Study on Isolation and Purification of L-Phenylalanine by Active Carbon

从用固定化细胞生产L-苯丙氨酸的反应液中，应用颗粒活性碳分离纯化L-苯丙氨酸。结果表明，该方法不受大量的无机盐干扰，纯化的L-苯丙氨酸，回收率为70％左右，产品纯度大于99．5％。

In this paper, we used active carbon to isolate and purify L-phenylalanine from the reacted liquid of L-phenylalanine produced by immobilized cells. The result indicated: the method can exclude the interference of much inorganic salt and obtain pure L-phenylalanine, the recover ratio is about 70%, the purity of product is more than 99. 5 %. This technique is simple and less time, and the puri ty of L-phenylalanine is high.