Enzymatic preparation of acylated derivatives of silybin in organic and ionic liquid media and evaluation of their antitumor proliferative activity
Φόρτωση...
Ημερομηνία
Συγγραφείς
Theodosiou, E.
Katsoura, M. H.
Loutrari, H.
Purchartova, K.
Kren, V.
Kolisis, F. N.
Stamatis, H.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Biocatalysis and Biotransformation
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
Biocatalytic preparation of acylated derivatives of silybin using several acyl donors (free fatty acids or their esters), catalyzed by immobilized Candida antarctica lipase B, was performed in various organic solvents as well as in imidazolium-based ionic liquids containing either BF(4)(-) or PF(6)(-) anions. Total conversion of silybin was achieved in acetone using short-chain acyl donors (vinyl butanoate) at a 10: 1 molar ratio of acyl donor to silybin. The enzymatic process in ionic liquids depended strongly on the alkyl chain length of the cation as well the anion used. Higher conversion yields (up to 75.8%) and reaction rates (up to 0.31 mmol h(-1) g(-1) biocatalyst) were obtained in the BF(4)(-) as compared with PF(6)(-) containing ionic liquids. The amounts of silybin ester formed in a one-step biocatalytic process were high (>40 g L(-1)) in both reaction media. The antiproliferative effect of acylated silybin derivatives on the growth of K562 human leukemia cells was estimated and compared with that of silybin.
Περιγραφή
Λέξεις-κλειδιά
silybin, lipase, ionic liquids, acylation, organic solvents, antitumor proliferative activity, lipase-catalyzed transesterification, candida-antarctica lipase, regioselective acylation, milk thistle, liver-disease, biocatalytic preparation, natural comp
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000268032500001
http://informahealthcare.com/doi/abs/10.1080/10242420902937777
http://informahealthcare.com/doi/abs/10.1080/10242420902937777
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών