Chromatographia

, Volume 49, Issue 11–12, pp 595–605 | Cite as

Stereochemical resolution of racemates, in HPLC, using a chiral stationary phase based upon immobilized α-chymotrypsin. I. Structural chiral separations

  • G. Félix
  • V. Descorps
Originals

Summary

α-Chymotrypsin was immobilized on an epoxide derivatized silica gel by anin situ immobilization process. Several racemates were resolved by a structural recognition mechanism. The immobilization process and the stability of this α-chymotrypsin stationary phase have been studied. The mobile phase parameters including the ionic strength, pH and the effects of organic modifiers have been also investigated. The retention, efficiency and stereoselectivity of the solutes appear to be related to their molecular structure, hydrophobicity and electrostatic interactions. These relationships determine the recognition mechanism and the position of each enantiomer in the active site.

Key Words

Column liquid chromatography α-Chymotrypsin immobilized on silica In situ immobilization process Structural chiral separations 

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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 1999

Authors and Affiliations

  • G. Félix
    • 1
  • V. Descorps
    • 1
  1. 1.ENSCPBTalenceFrance

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