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首页> 外文期刊>Separation and Purification Technology >A new technique for separation and purification of L-phenylalanine from fermentation liquid: Flotation complexation extraction
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A new technique for separation and purification of L-phenylalanine from fermentation liquid: Flotation complexation extraction

机译：从发酵液中分离纯化L-苯丙氨酸的新技术：浮选络合萃取

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摘要

Combining solvent sublation with complexation extraction, flotation complexation extraction (FCE) is proposed for the first time. This new technique was used to separate and purify L-phenylalanine from fermentation liquid with good results. The effects of extraction solvent, pH of the solution, NaCl concentration, concentration of di-(2-ethylhexyl) phosphoric acid (D2EHPA) in organic phase, nitrogen flow rate and flotation time on the separation efficiency of L-phenylalanine were investigated in detail, and the optimal conditions for FCE were obtained. The flotation product from the fermentation liquid under optimal conditions, after back-extraction and re-crystallization, was characterized by FTIR and HPLC, and its purity was more than 98%. Furthermore, the mechanism of FCE was also primarily discussed.
机译：首次提出将溶剂升华与络合萃取相结合，提出浮选络合萃取（FCE）。该新技术用于从发酵液中分离纯化L-苯丙氨酸，效果良好。详细研究了萃取溶剂，溶液的pH，NaCl浓度，有机相中二（2-乙基己基）磷酸（D2EHPA）的浓度，氮气流速和浮选时间对L-苯丙氨酸分离效率的影响。 ，并获得了FCE的最佳条件。经过FTIR和HPLC对最佳条件下发酵液中的浮选产物进行了FTIR和HPLC表征，纯度达到98％以上。此外，还初步讨论了FCE的机制。

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