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International Journal of Medicinal Mushrooms

Published 12 issues per year

ISSN Print: 1521-9437

ISSN Online: 1940-4344

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Polysaccharides from Pleurotus eryngii var. elaeoselini (Agaricomycetes), a New Potential Culinary−Medicinal Oyster Mushroom from Italy

Volume 22, Issue 5, 2020, pp. 431-444
DOI: 10.1615/IntJMedMushrooms.2020034539
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ABSTRACT

Three water-soluble glucans (PELPS-A1, PELPS-A2, and PELPS-A3) purified from the hot water extract of the basidiomata of an edible mushroom Pleurotus eryngii var. elaeoselini by chromatography on DEAE-cellulose 32 and Sephadex G-100 column were found to consist of only D-glucose as monosaccharide constituent. Structural investigation was carried out by acid hydrolysis, periodate oxidation, and NMR experiments (1H-NMR, 13C-NMR, DQF-COSY, TOCSY, ROESY, HMQC, and HMBC). On the basis of these experiments, the structures of the repeating unit of the three isolated polysaccharides were established as follows:
(1) PELPS-A1:

{[→3)-α-D-Glcp-(1→]3→4)-α-D-Glcp-(1→2)-α-D-Glcp-(1→6)-α-D-Glcp-(1[→6)-β-D-Glcp-(1→]2}n
6

1
α-D-Glcp

(2) PELPS-A2: [→6)-β-D-Glcp-(1→6)-β-D-Glcp-(1→6)-β-D-Glcp-(1→]n
3

1
β-D-Glcp

(3) PELPS-A3: [→6)-α-D-Glcp-(1→6)-α-D-Glcp-(1→6)-α-D-Glcp-(1→]n

The dried basidiomata of P. eryngii var. elaoselini were tested for their antioxidant activity by DPPH and hydroxyl radical scavenging assays. The crude extract has shown a SC50 of 1.4 mg/mL for DPPH test while a SC50 of 5.7 mg/mL was observed for hydroxyl radical scavenging activity test. The antioxidant activity of PELPS-A1, PELPS-A2, and PELPS-A3, evaluated as hydroxyl radical scavenging activity, was similar and significant, suggesting their use as antioxidants.

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CITED BY
  1. Barone Rosario, Caruso Bavisotto Celeste, Rappa Francesca, Gargano Maria Letizia, Macaluso Filippo, Paladino Letizia, Vitale Alessandra Maria, Alfano Stefano, Campanella Claudia, Gorska Magdalena, Di Felice Valentina, Cappello Francesco, Venturella Giuseppe, Marino Gammazza Antonella, JNK pathway and heat shock response mediate the survival of C26 colon carcinoma bearing mice fed with the mushroom Pleurotus eryngii var. eryngii without affecting tumor growth or cachexia, Food & Function, 12, 7, 2021. Crossref

  2. Lin Pei, Yan Zheng-Fei, Kook MooChang, Li Chang-Tian, Yi Tae-Hoo, Laranjo Marta, Genetic and Chemical Diversity of Edible Mushroom Pleurotus Species, BioMed Research International, 2022, 2022. Crossref

  3. Cateni Francesca, Gargano Maria Letizia, Procida Giuseppe, Venturella Giuseppe, Cirlincione Fortunato, Ferraro Valeria, Mycochemicals in wild and cultivated mushrooms: nutrition and health, Phytochemistry Reviews, 21, 2, 2022. Crossref

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