Back to search

King Oyster, Eryngii · 2013 · Research Support, Non U.S. Gov'T

High relevance

Structural elucidation of a novel heteropolysaccharide from the fruiting bodies of Pleurotus eryngii.

Pleurotus eryngii

Immune supportGut & microbiome
SpeciesKing Oyster, Eryngii
JournalCarbohydrate polymers
Year2013

Key points

  • A novel water-soluble heteropolysaccharide (PEPS1), with a molecular weight of 1.88×10(4) Da as determined by high performance liquid chromatography (HPLC), specifically size exclusion chromatography, was isolated from the fruiting bodies of Pleurotus eryngii by hot water extraction and further purification by DEAE Sepharose Fast Flow and Sephacryl S-300 and S-100 High-Resolution chromatography
  • By use of compositional analysis, methylation analysis, together with (1)H, (13)C NMR and 2D NMR spectroscopy including COSY, TOCSY, HMQC, HMBC and NOESY experiments, the PEPS1 was identified as a heteropolysaccharide that consists of a α-D-(1→6)-Galactopyranan backbone with a β-D-Mannosyl unit on O-2 of the 2,6-di-O-substituted-D-Galactosyl units, α-(1→6)-3-O-Me-D-Galactopyranan backbone with a terminal α-3-O-Me-D-Galactosyl unit and it also contained a minor 2,3,6-α-D-Galatopyranan units and 4-β-D-Mannopyranan residues

Metadata-grounded summary

Citation abstract

A novel water-soluble heteropolysaccharide (PEPS1), with a molecular weight of 1.88×10(4) Da as determined by high performance liquid chromatography (HPLC), specifically size exclusion chromatography, was isolated from the fruiting bodies of Pleurotus eryngii by hot water extraction and further purification by DEAE Sepharose Fast Flow and Sephacryl S-300 and S-100 High-Resolution chromatography. By use of compositional analysis, methylation analysis, together with (1)H, (13)C NMR and 2D NMR spectroscopy including COSY, TOCSY, HMQC, HMBC and NOESY experiments, the PEPS1 was identified as a heteropolysaccharide that consists of a α-D-(1→6)-Galactopyranan backbone with a β-D-Mannosyl unit on O-2 of the 2,6-di-O-substituted-D-Galactosyl units, α-(1→6)-3-O-Me-D-Galactopyranan backbone with a terminal α-3-O-Me-D-Galactosyl unit and it also contained a minor 2,3,6-α-D-Galatopyranan units and 4-β-D-Mannopyranan residues.

Citation

Zhang AQ, Zhang Y, Yang JH, Sun PL (2013). Structural elucidation of a novel heteropolysaccharide from the fruiting bodies of Pleurotus eryngii. Carbohydrate polymers https://doi.org/10.1016/j.carbpol.2012.11.069 PMID: 23399283

Open citation