scholarly journals Precise molecular weight determination and structure characterization of end-functionalized polymers: An NMR approach via combination of one-dimensional and two-dimensional techniques

2017 ◽  
Vol 35 (5) ◽  
pp. 681-692 ◽  
Author(s):  
Dong-xue Chen ◽  
Ling-feng Gao ◽  
Xiao-hong Li ◽  
Ying-feng Tu
Keyword(s):  
Molecular Weight ◽  
Structure Characterization ◽  
Functionalized Polymers ◽  
Molecular Weight Determination ◽  
Two Dimensional ◽  
One Dimensional

scholarly journals Structure characterization of the central repetitive domain of high molecular weight gluten proteins. I. Model studies using cyclic and linear peptides

1997 ◽  
Vol 6 (3) ◽  
pp. 637-648 ◽  
Author(s):  
Alard A. Van Dijk ◽  
Lourens L. Van Wijk ◽  
Eric Van Swieten ◽  
George T. Robillard ◽  
Alexandra Van Vliet ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Structure Characterization ◽  
Repetitive Domain ◽  
Gluten Proteins ◽  
Model Studies

Stabilized Nanoparticles Obtained from Synthetic Polykerizable Micelles and Vesicles.

1989 ◽  
Vol 171 ◽  
Author(s):  
Constantinos M. Paleos
Keyword(s):  
Electron Microscopy ◽  
Molecular Weight ◽  
Polymeric Micelles ◽  
Structural Characteristics ◽  
Molecular Weight Determination ◽  
Stability Studies ◽  
Dsc Studies

ABSTRACTThe structural characteristics and the formation of monomeric and stabilized polymeric micelles and vesicles are reviewed. Characterization of these nanoparticles involved stability studies, molecular weight determination, permeability and fluorescence investigations, as well as electron microscopy and DSC studies.

scholarly journals Variations in the Methionine-rich Protein Composition of the Genus Arachis1

1984 ◽  
Vol 11 (1) ◽  
pp. 1-3 ◽  
Author(s):  
Sheikh M. Basha ◽  
Sunil K. Pancholy
Keyword(s):  
Molecular Weight ◽  
Gel Electrophoresis ◽  
Protein Composition ◽  
Electrophoretic Analysis ◽  
Two Dimensional ◽  
Weight Group ◽  
Two Dimensional Gel Electrophoresis ◽  
One Dimensional ◽  
Molecular Weights ◽  
Isoelectric Points

Abstract Methionine-rich proteins (MRP) from seeds of different species of the Genus Arachis were isolated and analyzed by gel electrophoresis to detect possible compositional differences. One-dimensional gel electrophoretic analysis showed presence of quantitative and qualitative variations among the MRP-fractions. Following two-dimensional gel electrophoresis, the MRP-fractions were found to contain three groups of polypeptides with apparent molecular weights of approximately 21,000; 19,000 and 16,000, and isoelectric points between 5.1 and 5.8. Within each molecular weight group the number of polypeptides varied between 1 and 3.

Determination of Molecular Weight and Structure Characterization of Canna Amylose Purified Using the Method of n-Butanol Recrystallization

2012 ◽  
Vol 554-556 ◽  
pp. 1216-1222
Author(s):  
Hai Xin Shi ◽  
Yan Zhen Yin ◽  
Xiao Xi Hu ◽  
Shu Fei Jiao
Keyword(s):  
Molecular Weight ◽  
Average Molecular Weight ◽  
Structure Characterization ◽  
X Ray Diffraction ◽  
Ft Ir ◽  
Granule Surface ◽  
Chemical Groups ◽  
Ubbelohde Viscometer

The canna amylose (CAM) was separated from canna starch grown in China and purified both using the method of n-butanol recrystallization. The purity, morphology, spectral properties and molecular weight of CAM were characterized by ultraviolet and visible spectrophotometer (UV/Vis), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscope (FT-IR) and Ubbelohde viscometer. Maximum absorption wavelength of the purified CAM (635－638 nm) and it’s blue values (BV) (1.167 ± 0.209) prove that the purification of the CAM by n-butanol recrystallization was successfully carried out. The SEM results show that CAM granule surface become rougher and the CAM granule size become smaller than that of canna starch. The XRD results suggest that most of CAM granule is amorphous. And the FT-IR results show that the basic chemical groups of canna starch are also presented in CAM. However, the amorphous area of CAM is increased. The intrinsic viscosity and viscosity-average molecular weight of CAM is 78.5 mL/g and 1.65×105, respectively.

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