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International Journal of Medicinal Mushrooms
Impact-faktor: 1.423 5-jähriger Impact-Faktor: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN Druckformat: 1521-9437
ISSN Online: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.2017024413
pages 879-892

Water-Soluble Polysaccharide Extracts from the Oyster Culinary-Medicinal Mushroom Pleurotus ostreatus (Agaricomycetes) with HMGCR Inhibitory Activity

Alicia Gil-Ramirez
Department of Production and Characterization of Novel Foods, CIAL–Research Institute in Food Science, Universidad Autónoma de Madrid, Madrid, Spain
Fhernanda R. Smiderle
Department of Biochemistry and Molecular Biology, Federal University of Parana, Curitiba, Parana, Brazil
Diego Morales
Department of Production and Characterization of Novel Foods, CIAL–Research Institute in Food Science, Universidad Autónoma de Madrid, Madrid, Spain
Coen Govers
Food & Biobased Research, Wageningen University and Research Centre, Wageningen, The Netherlands
Andriy Synytsya
Department of Carbohydrates and Cereals, Institute of Chemical Technology, Prague, Czech Republic
Harry J. Wichers
Food & Biobased Research, Wageningen University and Research Centre, Wageningen, The Netherlands
Marcello Iacomini
Department of Biochemistry and Molecular Biology, Federal University of Parana, Curitiba, Parana, Brazil
Cristina Soler-Rivas
Department of Production and Characterization of Novel Foods, CIAL–Research Institute in Food Science, Universidad Autónoma de Madrid, Madrid, Spain

ABSTRAKT

Water extracts from Pleurotus ostreatus containing no statins showed 3-hydroxy-3-methyl-glutaryl CoA reductase (HMGCR) inhibitory activity (in vitro) that might be due to specific water-soluble polysaccharides (WSPs); when isolated and deproteinized, increasing concentrations of the WSP extract induced higher inhibition. The WSP extract contained mainly β-glucans, mannogalactans, and glycogen (e.g., α-glucans), although derivatives or fragments with lower molecular weights (between 14 and 3.5 kDa) were present and were able to induce the inhibitory activity. The extract contained more β-(1→3)-glucans than β-(11→3),(11→6)-glucans, and they partially survived digestion and managed to pass through Caco2 cell monolayers to the lower compartment after in vitro digestion and transport experiments. The WSP might also modulate Caco2 membrane integrity.


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