Quantitative Analysis of Polysaccharide Composition in Polyporus umbellatus by HPLC–ESI–TOF–MS

Autor: Shizhong Chen, Jianhua Sun, Weijuan Jia, Wanwan Wang, Ning Guo, Zongli Bai, Hong Wang
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Molecules
Volume 24
Issue 14
Molecules, Vol 24, Iss 14, p 2526 (2019)
ISSN: 1420-3049
DOI: 10.3390/molecules24142526
Popis: Polyporus umbellatus is a well-known and important medicinal fungus in Asia. Its polysaccharides possess interesting bioactivities such as antitumor, antioxidant, hepatoprotective and immunomodulatory effects. A qualitative and quantitative method has been established for the analysis of 12 monosaccharides comprising polysaccharides of Polyporus umbellatus based on high-performance liquid chromatography coupled with electrospray ionization&ndash
ion trap&ndash
time of flight&ndash
mass spectrometry. The hydrolysis conditions of the polysaccharides were optimized by orthogonal design. The results of optimized hydrolysis were as follows: neutral sugars and uronic acids 4 mol/L trifluoroacetic acid (TFA), 6 h, 120 °
C
and amino sugars 3 mol/L TFA, 3 h, 100 °
C. The resulting monosaccharides derivatized with 1-phenyl-3-methyl-5-pyrazolone have been well separated and analyzed by the established method. Identification of the monosaccharides was carried out by analyzing the mass spectral behaviors and chromatography characteristics of 1-phenyl-3-methyl-5-pyrazolone labeled monosaccharides. The results showed that polysaccharides in Polyporus umbellatus were composed of mannose, glucosamine, rhamnose, ribose, lyxose, erythrose, glucuronic acid, galacturonic acid, glucose, galactose, xylose, and fucose. Quantitative recoveries of these monosaccharides in the samples were in the range of 96.10&ndash
103.70%. This method is simple, accurate, and sensitive for the identification and quantification of monosaccharides, and can be applied to the quality control of Polyporusumbellatus as a natural medicine.
Databáze: OpenAIRE
Nepřihlášeným uživatelům se plný text nezobrazuje