Differential Analysis of O-(2- hydroxypropyl) cellulose by Using Two-Dimensional 1H-NMR Spectroscopy
نویسندگان
چکیده
منابع مشابه
Evaluating the Role of antioxidants in the stabilization of hydroxypropyl cellulose by ATR-FTIR Spectroscopy
This study is aimed at evaluating the performance of tetrakismethylene-3-3,5-di-tert-butyl-4-hydroxyphenyl propionate methane S1010, tris2,4-di-tert-butylphenyl phosphite S1680 and ascorbic acid AA antioxidants in stabilization of hydroxypropyl cellulose HPC. For this purpose, a number of films with weight percent ratios of 0.4 w/w were prepared in a 1 isopropanol solution w/v. Then, the films ...
متن کاملAssignment of the 31P and 1H resonances in oligonucleotides by two-dimensional NMR spectroscopy.
The use of new 1H-detected heteronuclear 1H-31P shift correlation experiments is demonstrated for oligonucleotides of 12 and 40 base pairs. The methods give unambiguous assignments of the 31P resonances and also permit identification of the C4' and C5' sugar protons. Use of the new methods enables one to make sequence-specific resonance assignments without reference to a known or assumed confor...
متن کاملQuantitative analysis of hydrogen peroxide by 1H NMR spectroscopy.
A technique utilizing 1H NMR spectroscopy has been developed to measure the concentration of hydrogen peroxide from 10(-3) to 10 M. Hydrogen peroxide produces a peak at around 10-11 ppm, depending upon the interaction between solvent molecules and hydrogen peroxide molecules. The intensity of this peak can be monitored once every 30 s, enabling the measurement of changes in hydrogen peroxide co...
متن کاملUltrafast two-dimensional NMR spectroscopy using constant acquisition gradients.
Multidimensional NMR spectroscopy plays an important role in the characterization of molecular structure and dynamics. A new methodology for acquiring this kind of spectra has been recently demonstrated, endowed with the potential to compress arbitrary multidimensional NMR acquisitions into a single scan. This "ultrafast" nD acquisition protocol is based on a spatiotemporal encoding of the indi...
متن کاملMetabotyping of Long-Lived Mice using 1H NMR Spectroscopy
Significant advances in understanding aging have been achieved through studying model organisms with extended healthy lifespans. Employing 1H NMR spectroscopy, we characterized the plasma metabolic phenotype (metabotype) of three long-lived murine models: 30% dietary restricted (DR), insulin receptor substrate 1 null (Irs1-/-), and Ames dwarf (Prop1df/df). A panel of metabolic differences were ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Archive of Biomedical Science and Engineering
سال: 2020
ISSN: 2641-3027
DOI: 10.17352/abse.000015