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Phosphorylation of Silk Fibroin via Maillard Reaction and Its Behavior of Biomimetic Mineralization

Phosphorylation of Silk Fibroin via Maillard Reaction and Its Behavior of Biomimetic Mineralization Abstract Silk fibroin (SF) has the characteristics of non-toxicity, good biocompatibility and low immunogenicity, and exhibits many potential applications in biomaterial fields. In the present work, chemical phosphorylation of SF was carried out via the Maillard reaction using D-glucose-6-phosphate (GP), aiming at increasing the number of binding-sites for calcium ion and promoting the biomimetic mineralization of SF films. Changes in the molecular weight of SF before and after GP grafting were analyzed by SDS-PAGE and SEC chromatogram. Structures, morphologies, and elemental compositions for the fibroin-based films before and after mineralization were evaluated by the means of EDS, SEM, FTIR, and XRD. The results indicated that GP was successfully grafted onto SF surfaces, companying with a slight decrease in the molecular weight. Biomimetic mineralization led to a noticeable deposition of hydroxyapatite (HAp) on the film of SF-g-GP, and higher contents of calcium and phosphorous were detected on the mineralized material, revealing that phosphorylation promoted the mineralization processing. Meanwhile, biocompatibility of the obtained SF-g-GP/HAp was above the acceptable level according to ISO 10993-5-2009. The present work provides an alternative to prepare the fibroin-based bone repair materials. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Fibers and Polymers Springer Journals

Phosphorylation of Silk Fibroin via Maillard Reaction and Its Behavior of Biomimetic Mineralization

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References (36)

Publisher
Springer Journals
Copyright
2019 The Korean Fiber Society
ISSN
1229-9197
eISSN
1875-0052
DOI
10.1007/s12221-019-9062-1
Publisher site
See Article on Publisher Site

Abstract

Abstract Silk fibroin (SF) has the characteristics of non-toxicity, good biocompatibility and low immunogenicity, and exhibits many potential applications in biomaterial fields. In the present work, chemical phosphorylation of SF was carried out via the Maillard reaction using D-glucose-6-phosphate (GP), aiming at increasing the number of binding-sites for calcium ion and promoting the biomimetic mineralization of SF films. Changes in the molecular weight of SF before and after GP grafting were analyzed by SDS-PAGE and SEC chromatogram. Structures, morphologies, and elemental compositions for the fibroin-based films before and after mineralization were evaluated by the means of EDS, SEM, FTIR, and XRD. The results indicated that GP was successfully grafted onto SF surfaces, companying with a slight decrease in the molecular weight. Biomimetic mineralization led to a noticeable deposition of hydroxyapatite (HAp) on the film of SF-g-GP, and higher contents of calcium and phosphorous were detected on the mineralized material, revealing that phosphorylation promoted the mineralization processing. Meanwhile, biocompatibility of the obtained SF-g-GP/HAp was above the acceptable level according to ISO 10993-5-2009. The present work provides an alternative to prepare the fibroin-based bone repair materials.

Journal

Fibers and PolymersSpringer Journals

Published: Aug 1, 2019

Keywords: Polymer Sciences

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