Abstract
Nigella sativa L. seed lipase isolated from defatted seeds was partially purified and used as catalyst in transesterification reactions. Purification of an ammonium sulfate-precipitated sample (at 35% saturation, Nigella PL) by DEAE ion-exchange chromatography increased the specific activity from 13.9 to 156.7 U/mg protein. Nigella PL and Nigella CPL (the partially purified enzyme sample obtained by DEAE ion-exchange chromatography) catalyzed the transesterification of vinyl acetate with octanol, with racemic sulcatol (6-methyl-5-hepten-2-ol), and with racemic trans-sobrerol (trans-p-menth-6-ene-2,8-diol) in different organic solvents. Both activity and enantioselectivity of the enzyme samples used for these biotransformations were affected by the nature of the organic solvent.
| Original language | English |
|---|---|
| Pages (from-to) | 43-48 |
| Number of pages | 6 |
| Journal | JAOCS, Journal of the American Oil Chemists' Society |
| Volume | 80 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2003 |
Funding
We are grateful to CNR (Consiglio Nazionale delle Ricerche, Italy) and TUBITAK (Turkish Scientific and Technical Research Center) for financial support of this joint research project. The facilities of the laborotorium of the Chemical Engineering Department, Istanbul Technical University, Turkey are also acknowledged.
| Funders | Funder number |
|---|---|
| TUBITAK | |
| Turkish Scientific and Technical Research Center | |
| Consiglio Nazionale delle Ricerche |
Keywords
- Enantioselectivity
- Enzymatic transesterification
- Nigella sativa L. seed lipase
- Purification
- Sobrerol
- Sulcatol