scholarly journals Control of the gelation process of silk fibroin solution

2014 ◽  
Vol 18 (5) ◽  
pp. 1587-1590 ◽  
Author(s):  
Yu Liu ◽  
Ying Zhang
Keyword(s):  
Bombyx Mori ◽  
Silk Fibroin ◽  
Conformational Transition ◽  
Random Coil ◽  
Simple Shearing ◽  
Gelation Process ◽  
Bombyx Mori Silk ◽  
Fibroin Solution

In the present study, silk fibroin solution was controlled through a simple shearing to accomplish the steady and rapid gelation process and the conformational transition. Antheraea yamamai silk fibroin was formed into hydrogels quicker than Bombyx mori silk fibroin on the same condition. Comparing with Bombyx mori silk fibroin, the rapid gelation of Antheraea yamamai silk fibroin was concerned with its alternate polyalanine-containing units which are tended to form the ?-helix structures spontaneously. The entropic cost during the conformational transition to ?-sheet is less than that from random coil to ?-sheet.

Effect of Concentration on Structure and Properties of Concentrated Regenerated Silk Fibroin Solution

2011 ◽  
Vol 311-313 ◽  
pp. 1653-1656 ◽  
Author(s):  
Fang Xie ◽  
Hao Liang
Keyword(s):  
Silk Fibroin ◽  
Conformational Transition ◽  
Random Coil ◽  
Scanning Calorimetry ◽  
Regenerated Silk Fibroin ◽  
Lower Temperature ◽  
Α Helix ◽  
Β Sheet ◽  
Dsc Curves ◽  
Fibroin Solution

The thermal properties and rheological behavior of concentrated regenerated silk fibroin aqueous solution from 15% to 37% was investigated by differential scanning calorimetry (DSC) and rheometer. Also the conformation of solutions was characterized by Raman spectra. It was discovered that the major endothermic peak in the DSC curves shifted toward the lower temperature region with increasing the concentration. This behavior suggests increasing the concentration can accelerate conformational transition of silk fibroin from random coil and α-helix to β-sheet structure. In addition, it was found that the viscosity of solution increased with increasing concentration in favor of spinning.

Study on Silk Fibroin Gelation: Effect of Polyalcohol

2011 ◽  
Vol 175-176 ◽  
pp. 137-142 ◽  
Author(s):  
Qiang Zhang ◽  
Ying Dong Cheng ◽  
Yu Liu ◽  
Shu Qin Yan ◽  
Ming Zhong Li
Keyword(s):  
Silk Fibroin ◽  
Three Dimensional ◽  
Random Coil ◽  
X Ray Diffraction ◽  
Polyethylene Glycol 400 ◽  
Bombyx Mori Silk ◽  
Α Helix ◽  
Β Sheet ◽  
Important Form ◽  
Fibroin Solution

The Bombyx mori silk fibroin gel with three dimensional structures is an important form to be developed for tissue engineering materials. In this paper, silk fibroin gels were prepared with adding polyalcohol into silk fibroin solution. The gel structure was analyzed by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy. The results demonstrated that when adding more than 100% of polyalcohol, both of glycerol and polyethylene glycol 400 (PEG400) can accelerate the gelation process markedly. With the increase of the percentage of PEG400 and glycerol, it promoted silk fibroin molecules to cluster rapidly and inhibit silk fibroin molecules transforming from the random coil or α-helix to β-sheet in a ratio of 900% especially. Silk fibroin gels containing 100% of polyalcohol had more uniform morphology and the pores distributed uniformly.

scholarly journals Oxygen Permeability of Silk Fibroin Hydrogels and Their Use as Materials for Contact Lenses: A Purposeful Analysis

Gels ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 58
Author(s):  
Traian V. Chirila
Keyword(s):  
Tissue Engineering ◽  
Bombyx Mori ◽  
Silk Fibroin ◽  
Biomedical Applications ◽  
Oxygen Permeability ◽  
Contact Lenses ◽  
The Past ◽  
Fibrous Protein ◽  
Silk Moth ◽  
Bombyx Mori Silk

Fibroin is a fibrous protein that can be conveniently isolated from the silk cocoons produced by the larvae of Bombyx mori silk moth. In its form as a hydrogel, Bombyx mori silk fibroin (BMSF) has been employed in a variety of biomedical applications. When used as substrates for biomaterial-cells constructs in tissue engineering, the oxygen transport characteristics of the BMSF membranes have proved so far to be adequate. However, over the past three decades the BMSF hydrogels have been proposed episodically as materials for the manufacture of contact lenses, an application that depends on substantially elevated oxygen permeability. This review will show that the literature published on the oxygen permeability of BMSF is both limited and controversial. Additionally, there is no evidence that contact lenses made from BMSF have ever reached commercialization. The existing literature is discussed critically, leading to the conclusion that BMSF hydrogels are unsuitable as materials for contact lenses, while also attempting to explain the scarcity of data regarding the oxygen permeability of BMSF. To the author’s knowledge, this review covers all publications related to the topic.

Immobilization of glucose oxidase on nonwoven fabrics with bombyx mori silk fibroin gel

1992 ◽  
Vol 46 (1) ◽  
pp. 49-53 ◽  
Author(s):  
Tetsuo Asakura ◽  
Motohiro Kitaguchi ◽  
Makoto Demura ◽  
Harutoshi Sakai ◽  
Keiichi Komatsu
Keyword(s):  
Glucose Oxidase ◽  
Bombyx Mori ◽  
Silk Fibroin ◽  
Nonwoven Fabrics ◽  
Bombyx Mori Silk

Nucleation of hydroxyapatite crystals by self-assembled Bombyx mori silk fibroin

2013 ◽  
Vol 51 (9) ◽  
pp. 742-748 ◽  
Author(s):  
Mingying Yang ◽  
Wen He ◽  
Yajun Shuai ◽  
Sijia Min ◽  
Liangjun Zhu
Keyword(s):  
Bombyx Mori ◽  
Silk Fibroin ◽  
Bombyx Mori Silk ◽  
Self Assembled ◽  
Hydroxyapatite Crystals

scholarly journals Glycerin-Induced Conformational Changes in Bombyx mori Silk Fibroin Film Monitored by 13C CP/MAS NMR and 1H DQMAS NMR

2016 ◽  
Vol 17 (9) ◽  
pp. 1517 ◽  
Author(s):  
Tetsuo Asakura ◽  
Masanori Endo ◽  
Misaki Hirayama ◽  
Hiroki Arai ◽  
Akihiro Aoki ◽  
...  
Keyword(s):  
Bombyx Mori ◽  
Silk Fibroin ◽  
Conformational Changes ◽  
Mas Nmr ◽  
Silk Fibroin Film ◽  
Bombyx Mori Silk ◽  
Cp Mas Nmr ◽  
13C Cp Mas Nmr
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