Thiamine pyrophosphate intercalation in layered double hydroxides (LDHs): An active bio-hybrid catalyst for pyruvate decarboxylation
Φόρτωση...
Ημερομηνία
Συγγραφείς
Baikousi, M.
Stamatis, A.
Louloudi, M.
Karakassides, M. A.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Elsevier
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Applied Clay Science
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
The intercalation of thiamine pyrophosphate (TPP) into Zn-Al and Mg-Al layered double hydroxides has been investigated using two different methods: the co-precipitation procedure (at different pH values) and the ion-exchange reaction. The structure of the hybrid materials was studied by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy verifying that the TPP molecules prefer creating a bilayer arrangement at pH = 7.5, 7.75 and 8, while in the case of pH = 7 a monolayer of TPP molecules coexists in the interlayer space of LDHs. In addition, the thermal decomposition of the bio-hybrid materials was examined by thermogravimetry and differential thermal analysis (TG-DTA). The total amount of the deintercalated TPP molecules from LDHs was calculated after de-intercalation reactions in the presence of carbonate ions by Ultraviolet (UV) spectroscopy. Furthermore, the hybrid materials (TPP/LDH) have been tested as biomimetic catalysts for decarboxylation of pyruvic acid showing a comparable activity to the homogenous system (TPP). Our combined data confirm that thiamine pyrophosphate can be safely loaded and stored into LDH's layers forming a new bio-active hybrid material. (C) 2013 Elsevier B.V. All rights reserved.
Περιγραφή
Λέξεις-κλειδιά
layered double hydroxide, thiamine pyrophosphate, intercalation, catalysis, pyruvate decarboxylation, hydrotalcite-like compounds, controlled-release properties, amino-acids, crystal-structure, physicochemical properties, nucleoside monophosphates, composite-materials, dependent enzymes, interlayer anions, silica surface
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000318835800017
http://ac.els-cdn.com/S0169131713000252/1-s2.0-S0169131713000252-main.pdf?_tid=10c0b444-362f-11e3-bd95-00000aab0f01&acdnat=1381906332_5f04d5585b4966e75f1d9cd734736a4a
http://ac.els-cdn.com/S0169131713000252/1-s2.0-S0169131713000252-main.pdf?_tid=10c0b444-362f-11e3-bd95-00000aab0f01&acdnat=1381906332_5f04d5585b4966e75f1d9cd734736a4a
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας