[Separation, purification and spectrum analysis of SHP]
Yun-duan Song1, Qing-yong Meng, Mei-yi Xu
1Analysis Center of Guangdong Medical College, Zhanjiang 524023, China. xiangxiang53@sohu.com
Zhong Yao Cai = Zhongyaocai = Journal of Chinese Medicinal Materials
|December 14, 2007
Summary
This study characterizes a novel non-starch polysaccharide (SHP) extracted from plant material. The purified SHP is primarily composed of furanopolysaccharides with various monosaccharide units, indicating potential applications.
Area of Science:
- Biochemistry
- Plant Science
- Carbohydrate Chemistry
Context:
- Polysaccharides are complex carbohydrates with diverse biological roles.
- Characterization of novel polysaccharides is crucial for understanding their properties and potential applications.
- This research focuses on a specific non-starch polysaccharide (SHP) derived from plant extraction.
Purpose:
- To extract and purify a crude polysaccharide (SHP) from plant material.
- To analyze the molecular structure and composition of the purified SHP.
- To determine the polysaccharide content and identify constituent monosaccharides.
Summary:
- Crude SHP was extracted via hot water and ethyl alcohol precipitation, followed by protein removal.
- Gel filtration chromatography separated SHP into distinct fractions, analyzed by UV-Vis and FTIR spectroscopy.
- Results confirm SHP as a non-starch polysaccharide (90.96% polysaccharide content) rich in furanopolysaccharides, xylose, galactose, arabinose, glucose, rhamnose, and fructose, with beta-glycosidic bonds and alpha-D-galactopyranosyl units.
Impact:
- Provides a detailed chemical characterization of a novel non-starch polysaccharide.
- Identifies key structural features, including furanopolysaccharide dominance and specific monosaccharide composition.
- Lays the groundwork for further investigation into the functional properties and potential applications of SHP.
Related Concept Videos
Mass Spectrum: Interpretation
An unknown compound can be established by identifying the molecular ion peak in the mass spectrum. The molecular ion peak is often weak or absent due to the predominance of fragmentation in high-energy electron beams. In such cases, a soft-energy electron beam can be used to scan the spectrum to enhance the intensity of the molecular ion peak. Additionally, chemical ionization, field ionization, and desorption ionization spectra are used to obtain a relatively intense molecular ion peak.To...
High-Performance Liquid Chromatography: Introduction
High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
In HPLC, two phases play a critical role in the separation process:
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
Mass Spectrometry: Complex Analysis
Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
¹³C NMR: ¹H–¹³C Decoupling
The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)
Heteronuclear single-quantum correlation spectroscopy (HSQC) is a 2D NMR technique that reveals one-bond correlations between hydrogen and a heteronucleus. The HSQC experiment is similar to the heteronuclear correlation experiment (HETCOR) but is more sensitive. In the HSQC spectrum, the proton chemical shift is plotted on the horizontal F2 axis, while the 13C chemical shift is plotted on the vertical F1 axis. The corresponding proton and 13C spectra are also shown. The HSQC contour plot does...


