Preparation and characterization of silk fibroin based materials loaded with natural compounds
by
 
Şamlı, Merve.

Title
Preparation and characterization of silk fibroin based materials loaded with natural compounds

Author
Şamlı, Merve.

Personal Author
Şamlı, Merve.

Publication Information
[s.l.]: [s.n.], 2010.

Physical Description
xi, 91 leaves. : ill. + 1 computer laser optical disc.

Abstract
In this study, it was aimed to increase solubility of flavonoids via inclusion complexation. Silk was also selected as carrier material. Firstly we have prepared cyclodextrin inclusion complexes with rutin via co-precipitation method. Stability constant of Beta-cyclodextrin complex was calculated as 262 M-1. Aqueous solubility of rutin was increased with inclusion complex of Beta-Cyclodextrin. Effect of temperature on aqueous solubility of free rutin, and its complex were studied. Also solubility energies are calculated. Characterization of cyclodextrin complexes were conducted with the help of UV-visible spectroscopy, X-Ray Diffractometry, Differential Scanning Calorimetry, Thermal Gravimetric Analysis, Fourier Transform Infrared spectroscopy and Scanning Electron Microscobe techniques. Characterization results supported formation of inclusion complexes which were compatible with the previous literature studies. Before release tests, dissolution profile of rutin, physical mixture and inclusion complex was observed at 37.C and in PBS; results show that addition of cyclodextrin has an increasing effect on solubility rate and amount. Then silk fibroin based films were prepared and used as carriers for natural compounds. After loading flavonoids and complexes into silk fibroin based films, release tests were done at 37 .C in neutral pH conditions for 24 hours. Most of the Rutin .independent from the form, whether free or complexed- released from Silk Fibroin films within the first 5 hours (burst release occurs) and the rest of it released slowly within 24 hours. Electron microscobe analyses showed that films have a homogenous and dense morphology. Consequently, silk fibroin is useful to load natural compounds into silk fibroin films in order to modify their release period within physiological conditions.

Subject Term
Organic compounds -- Biotechnology.

Added Author
Bayraktar, Oğuz.

Added Corporate Author
İzmir Institute of Technology. Biotechnology and Bioengineering.

Added Uniform Title
Thesis (Master)--İzmir Institute of Technology:Biotechnology and Bioengineering.
 
İzmir Institute of Technology:Biotechnology and Bioengineering.--Thesis (Master)..

Electronic Access
Access to Electronic Version.


LibraryMaterial TypeItem BarcodeShelf NumberStatus
IYTE LibraryThesisT000832TP248.65.O73 S18 2010Tez Koleksiyonu
IYTE LibrarySupplementary CD-ROMROM1629TP248.65.O73 S18 2010 EK1Tez Koleksiyonu