Enatioselective sorption of D-L Tyrosine in Chitosan Membrane

ANDRÉS TAKARA; DARÍO DÍAZ; C. OMAR. ILLANES; N. ARIEL OCHOA

Santander

Congreso; IX IBERO-AMERICAN CONGRESS ON MEMBRANE SCIENCE AND TECHNOLOGY; 2014

In this work a chitosan membrane (CH-0,5) was used for chiral separation by enantioselective sorption of Tyrosine (Tyr). The membrane was prepared from an acidic aqueous solution of 2% (p/p) of Chitosan containing 1% H3PO4 and then insolubilized by adding NaOH (0.5M). The study of D-L-Tyrosine in chitosan membrane was carried out using a racemic mixture of Tyrosine (0.25-2 mM) at 25° C and pH 5.6. Tyr sorption isotherms were determined by HPLC. Results from FITR measurements indicated that Tyr is present in chitosan matrix but no new covalent bond was formed.