Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Chitosan hydrogels: A new and simple matrix for lipase catalysed biosyntheses
Δημιουργός/Συγγραφέας:	Vassiliadi E. [EL] Ξενάκης, Αριστοτέλης[EN] Xenakis, Aristotelis [EL] Ζουμπανιώτη, Μαρία[EN] Zoumpanioti, Maria
Εκδότης:	Elsevier B.V.
Ημερομηνία:	2018
Γλώσσα:	Αγγλικά
ISSN:	2468-8231
DOI:	10.1016/j.mcat.2017.11.031
Περίληψη:	Lipase from Mucor miehei was immobilized on chitosan hydrogels without using any activation agent. These low-cost and easy to prepare lipase-containing hydrogels could be considered as novel solid-phase biocatalysts for use in organic media. When they were applied as biocatalysts towards the model esterification reaction of propyl laurate synthesis they showed an optimum operation temperature at 30 °C and maintained a high catalytic activity in various non-polar organic solvents. The higher initial esterification rates were obtained when biocatalysis took place in branched hydrocarbons where the initial rates recorded were twice the ones observed for straight hydrocarbons, being 0.22 mM/min in isooctane and 0.11 mM/min in hexane, respectively. The novel catalyst presented excellent reusability, with only 10% loss of activity after 12 uses, which is even higher than the one obtained by lipase-containing chitosan beads prepared with a cross-linker. Moreover, enzyme superactivity was evident for several runs.
Τίτλος πηγής δημοσίευσης:	Molecular Catalysis
Τόμος/Κεφάλαιο:	445
Σελίδες:	1
Θεματική Κατηγορία:	[EL] Χημεία (Γενικά)[EN] Chemistry (General) [EL] Βιοχημεία[EN] Biochemistry
Λέξεις-Κλειδιά:	Biocatalysis Enzyme Esterification Gels Natural polymers
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2017 Elsevier B.V.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Χημικής Βιολογίας - Επιστημονικό έργο