The results showed that the structure of the potato starch was B- type crystals and that of sweet potato starch was C-type crystals; while that of wheat starch,corn starch and taro starch were A- type crystals. Potato starch's crystallinity was the smallest while that of corn starch was ...
molecular weight- (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule relative molecular mass mass- the property of a body that causes it to have weight in a gravitational field chemical science,chemistry- the science of matter; the branch of the natural ...
For a well-defined molecular structure, the molecular weight is calculated from the atomic masses of the constituents. In the case of mixtures, the average molecular weight can be measured by the following methods:vapor pressureosmometry,freezing point depression,boiling point elevation,gel permeation ...
The molecular weight and the proposed structure of the Angelica sinensis polysaccharide-iron complex (APIC) were studied. Fourier transform infrared spectroscopy, X-ray powder diffraction, differential scanning calorimetry, transmission electron microscopy, electron paramagnetic resonance, thermogravimetric analysis...
[Structure][ Properties Computed from Structure] Molecular Weight 329.37364 [g/mol] Molecular Formula C17H21N4O3+ H-Bond Donor 2 H-Bond Acceptor 4 Rotatable Bond Count 2 Exact Mass 329.161366 MonoIsotopic Mass 329.161366 Topological Polar Surface Area 79.9 Heavy Atom Count 24 Formal Charge 1 Comple...
The molar-based distribution indicated that all the comprised two molecular species differing in molecular size, although the weight-based distribution showed a single species. A comparison of molecular structures of buckwheat starches to cereal starches indicated buckwheat had a larger amount of LC, ...
Synthesis and characterization of high molecular weight polyrotaxanes: towards the control over a wide range of threaded α-cyclodextrins. Soft Matter. 2005;1:378–85. Article CAS Google Scholar Jarroux N, Guegan P, Cheradame H, Auvray L. High conversion synthesis of pyrene end functionalized...
Experimental/ fluorescence Fourier transform spectra infrared spectra molecular weight nuclear magnetic resonance polymer structure polymerisation polymers red shift solubility thermal stability/ molecular weight tuning Gilch reaction route cyano-containing PPVs solubilizing alkyloxyl groups 2-cyano-5-(4'-alkoxy...
We apply our expertise analysis to elucidate the structure of new chemical entities, identify impurities and conduct chemical composition characterization. Our experts use mass spectrometry techniques to determine molecular weight and apply tandem MS/MS approaches to provide valuable data in the identificati...
abundant as those with formulae containing only C, H, and O. We would like to acknowledge that even though the new data presented cannot conclusively settle the discussion on DOM molecular diversity, it represents a major step towards an improved understanding of the structure of the DOM pool....