Quantitative Change in Disulfide Bonds and Microstructure Variation of Regenerated Wool Keratin from Various Ionic Liquids

2017 ◽  
Vol 5 (3) ◽  
pp. 2614-2622 ◽  
Author(s):  
Zhenlei Zhang ◽  
Yi Nie ◽  
Qiansen Zhang ◽  
Xue Liu ◽  
Wenhui Tu ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Disulfide Bonds ◽  
Quantitative Change ◽  
Wool Keratin

Ionic liquids as novel solvents for the dissolution and blending of wool keratin fibers

2005 ◽  
Vol 7 (8) ◽  
pp. 606 ◽  
Author(s):  
Haibo Xie ◽  
Shenghai Li ◽  
Suobo Zhang
Keyword(s):  
Ionic Liquids ◽  
Keratin Fibers ◽  
Wool Keratin

The Efficient Wool Keratin Dissolution Based on New Reductant

2012 ◽  
Vol 441 ◽  
pp. 656-660 ◽  
Author(s):  
Jiang Bo Wang ◽  
Jian Yong Liu ◽  
Jie Wang ◽  
De Shan Bin
Keyword(s):  
Molecular Weight ◽  
Disulfide Bonds ◽  
High Selectivity ◽  
Selective Reduction ◽  
Reducing Agent ◽  
Dissolution Time ◽  
Sds Page ◽  
History Of ◽  
Wool Processing ◽  
Wool Keratin

The dissolution of the wool keratin has a history of several decades, but the effective dissolution method has not been found yet. In this article, a novel reducing agent TCEP (Tris (2-carboxyethyl) phosphine) was used, which has a strong ability for selective reduction of disulfide bonds. With a joint use of sodium bisulfite, the wool dissolution has a great advantage in wool processing compared with previous methods; Through amino acid analysis, it was found that the content of the cysteine decreased significantly when using the TCEP as reducing agent, and the other amino acids did not change significantly, indicating that TCEP has high selectivity for reduction of disulfide bonds, and plays a significant role to maintain the molecular weight of keratin. The efficiency of dissolution was greatly improved; dissolution time was 4h, dissolution rate was 93.6%, keratin concentration was 10%, the yield of keratin with the molecular weight more than 3500 and more than 8000 were 80% and 72% respectively. By using SDS-PAGE, we can get that the main molecular weight of the keratin was 14000-20000.

Highly Efficient Dissolution of Wool Keratin by Dimethylphosphate Ionic Liquids

2015 ◽  
Vol 3 (11) ◽  
pp. 2925-2932 ◽  
Author(s):  
Shuangshuang Zheng ◽  
Yi Nie ◽  
Suojiang Zhang ◽  
Xiangping Zhang ◽  
Lijun Wang
Keyword(s):  
Ionic Liquids ◽  
Highly Efficient ◽  
Wool Keratin ◽  
Efficient Dissolution

scholarly journals DBN-based ionic liquids with high capability for the dissolution of wool keratin

RSC Advances ◽  
2017 ◽  
Vol 7 (4) ◽  
pp. 1981-1988 ◽  
Author(s):  
Xue Liu ◽  
Yi Nie ◽  
Xianglei Meng ◽  
Zhenlei Zhang ◽  
Xiangping Zhang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Wool Keratin

Effects of ILs structures on the dissolution capability were systematically studied, and the optimal IL [DBNE]DEP with high dissolution capability for goat wool was finally obtained.

Dissolution and regeneration of wool keratin in ionic liquids

2014 ◽  
Vol 16 (5) ◽  
pp. 2857-2864 ◽  
Author(s):  
Azila Idris ◽  
R. Vijayaraghavan ◽  
Usman Ali Rana ◽  
A. F. Patti ◽  
D. R. MacFarlane
Keyword(s):  
Ionic Liquids ◽  
Deep Eutectic Solvent ◽  
Reducing Agent ◽  
Solvent Mixtures ◽  
Wool Keratin

Substantial dissolution of wool was obtained in [AMIM][dca] and [choline][thioglycolate] ionic liquids as well as in deep eutectic solvent mixtures, under a variety of conditions including the use of a reducing agent.

scholarly journals Structural and Morphological Properties of Wool Keratin and Cellulose Biocomposites Fabricated Using Ionic Liquids

2021 ◽  
Author(s):  
Karleena Rybacki ◽  
Stacy A. Love ◽  
Bailey Blessing ◽  
Abneris Morales ◽  
Emily McDermott ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Morphological Properties ◽  
Wool Keratin

Synergistic Effects of Cosolvents on the Dissolution of Wool Keratin Using Ionic Liquids

2016 ◽  
Vol 39 (5) ◽  
pp. 979-986 ◽  
Author(s):  
Lijun Wang ◽  
Yi Nie ◽  
Xiangping Zhang ◽  
Shaojuan Zeng ◽  
Suojiang Zhang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Synergistic Effects ◽  
Wool Keratin

Cryo-electron microscopy of two-dimensional crystals of reduced type B botulinum neurotoxin

1992 ◽  
Vol 50 (1) ◽  
pp. 530-531
Author(s):  
P. F. Flicker ◽  
V.S. Kulkarni ◽  
J. P. Robinson ◽  
G. Stubbs ◽  
B. R. DasGupta
Keyword(s):  
Disulfide Bonds ◽  
Clostridium Botulinum ◽  
Structural Changes ◽  
Two Dimensional ◽  
Type B ◽  
Single Chain ◽  
Muscle Paralysis ◽  
Cryo Electron Microscopy ◽  
Disulfide Linkages ◽  
Intracellular Action

Botulinum toxin is a potent neurotoxin produced by Clostridium botulinum. The toxin inhibits release of neurotransmitter, causing muscle paralysis. There are several serotypes, A to G, all of molecular weight about 150,000. The protein exists as a single chain or or as two chains, with two disulfide linkages. In a recent investigation on intracellular action of neurotoxins it was reported that type B neurotoxin can inhibit the release of Ca++-activated [3H] norepinephrine only if the disulfide bonds are reduced. In order to investigate possible structural changes in the toxin upon reduction of the disulfide bonds, we have prepared two-dimensional crystals of reduced type B neurotoxin. These two-dimensional crystals will be compared with those of the native (unreduced) type B toxin.

Sign in / Sign up

Export Citation Format

Share Document