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 (1 H-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.

Cateni, F., Zacchigna, M., Procida, G., Venturella, G., Ferraro, V., & Gargano ML (2020). Polysaccharides from Pleurotus eryngii var. elaeoselini (Agaricomycetes), a New Potential Culinary–Medicinal Oyster Mushroom from Italy. INTERNATIONAL JOURNAL OF MEDICINAL MUSHROOMS, 22(5), 431-444 [10.1615/IntJMedMushrooms.2020034539].

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

Venturella, G
Membro del Collaboration Group
;
Ferraro, V
Membro del Collaboration Group
;
Gargano ML
Membro del Collaboration Group
2020

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 (1 H-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.
Settore BIO/03 - Botanica Ambientale E Applicata
http://www.dl.begellhouse.com/journals/708ae68d64b17c52,489762826cea4201,528b1a6a7d5d2eb3.html
Cateni, F., Zacchigna, M., Procida, G., Venturella, G., Ferraro, V., & Gargano ML (2020). Polysaccharides from Pleurotus eryngii var. elaeoselini (Agaricomycetes), a New Potential Culinary–Medicinal Oyster Mushroom from Italy. INTERNATIONAL JOURNAL OF MEDICINAL MUSHROOMS, 22(5), 431-444 [10.1615/IntJMedMushrooms.2020034539].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/434459
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