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International Journal of Medicinal Mushrooms
Импакт фактор: 1.423 5-летний Импакт фактор: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN Печать: 1521-9437
ISSN Онлайн: 1940-4344

Выпуски:
Том 21, 2019 Том 20, 2018 Том 19, 2017 Том 18, 2016 Том 17, 2015 Том 16, 2014 Том 15, 2013 Том 14, 2012 Том 13, 2011 Том 12, 2010 Том 11, 2009 Том 10, 2008 Том 9, 2007 Том 8, 2006 Том 7, 2005 Том 6, 2004 Том 5, 2003 Том 4, 2002 Том 3, 2001 Том 2, 2000 Том 1, 1999

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v18.i8.30
pages 671-680

Characterization of Cross-Flow Ultrafiltration Fractions from Maitake Medicinal Mushroom, Grifoia frondosa (Agaricomycetes), Reveals Distinct Cytotoxicity in Tumor Cells

Miriam Sari
Competence Center for Applied Mycology and Environmental Studies, Department of Food Science and Nutrition, Niederrhein University of Applied Sciences, Mönchengladbach, Germany
Reinhard Hambitzer
Competence Center for Applied Mycology and Environmental Studies, Department of Food Science and Nutrition, Niederrhein University of Applied Sciences, Mönchengladbach, Germany
Jan I. Lelley
GAMU Ltd. Institute for Mushroom Research Hüttenallee 241, D-47800 Krefeld, Germany
Katharina Toepler
Bio-Pharmaceutical Chemistry and Molecular Pharmacology, Technische Hochschule Koeln, Leverkusen, Germany
Nicole Teusch
Bio-Pharmaceutical Chemistry and Molecular Pharmacology, Technische Hochschule Koeln, Leverkusen, Germany
Anna Nickisch-Hartfiel
Department of Chemistry, Niederrhein University of Applied Sciences, Krefeld, Germany

Краткое описание

β-glucans from Basidiomycetes like Grifola frondosa (the maitake mushroom) are well known for their health benefits. Polysaccharide preparations from medicinal mushrooms such as G. frondosa have been successfully tested in a vast number of studies. Many mushroom extracts have been developed and today are merchandized for use medicinally and commercially. Studies could show that, in particular, chemical structural features such as the molecular size of β-glucans significantly influence their bioactivity. Thus it is highly important to explore the composition and structural properties of β-glucans extracted from medicinal mushrooms and their effects on human tumor cell viability. Our study focuses on the molecular weight cutoff distribution of β-glucans in hot water−based extracts from maitake mushrooms. Cross-flow ultrafiltration was applied to obtain 5 fractions of different molecular size. β-glucan content was quantified using an enzyme-based test kit, specialized to 1,3-1,6-β-glucans. Here we show that only small amounts of β-glucans with a high molecular weight (>100 kDa) could be detected from an aqueous extract of G. frondosa. The main compounds encompass substances with a low molecular weight (<5 kDa), composing about 35% of the whole extract. In addition, tumor cell viability studies demonstrate significant cytotoxic potential in 2 different solid cancer cell types for the fraction with a high molecular weight (>100 kDa) and for 1 fraction with a low molecular weight (5−10 kDa). In summary, our experiments prove that cross-flow ultrafiltration serves as a quick and easy method for dividing crude aqueous mushroom extracts into different molecular-weight fractions that inhibit tumor cell viability in vitro.


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