Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 425480
Title Antioxidative activities and chemical characterization of polysaccharide extracts from the widely used mushrooms Ganoderma applanatum, Ganoderma lucidum, Lentinus edodes and Trametes versicolor
Author(s) Kozarski, M.; Klaus, A.; Niksic, M.; Vrvic, M.M.; Todorovic, N.; Jakovljevic, D.; Griensven, L.J.L.D. van
Source Journal of Food Composition and Analysis 26 (2012)1-2. - ISSN 0889-1575 - p. 144 - 153.
Department(s) PRI BIOS Applied Metabolic Systems
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) medicinal mushrooms - phenolic-compounds - edible mushrooms - free-radicals - metal-ions - perspective - monophenols - substances - tyrosinase - glucans
Abstract Antioxidant activities of polysaccharide extracts of four of the most widely known mushrooms often used in medicinal applications as well as in tea and food, namely Ganoderma applanatum, Ganoderma lucidum, Lentinus edodes and Trametes versicolor, were studied. G. applanatum and L edodes extracts were the strongest DPPH scavengers, i.e. EC50 <0.1 mg/mL. G. applanatum extract had the highest chelating ability of ferrous ion (EC50 = 3.58 mg/mL), inhibition of lipid peroxidation (EC50 = 2.07 mg/mL) and had the highest reducing power, EC50 = 0.18. All four polysaccharide extracts showed a strong correlation between the reducing power and the total amount of phenols and alpha-glucans: no such correlation was found between the reducing power and the amount of total polysaccharides and proteins. The extracts contained a mixture/complex of polysaccharides, proteins and polyphenols, still present after hot water treatment, ethanol precipitation and dialysis. Glucose was the prevalent monosaccharide of all polysaccharides and samples contained both alpha- and beta-glucans. Total glucan contents varied considerably, i.e. from 35% for G. applanatum to 83% for G. lucidum. Uronic acid was found in the G. applanatum polysaccharides. Fourier transform infrared (FT-IR) analysis showed strong aromatic and ester peaks next to the different sugar and polysaccharide signals. (C) 2012 Elsevier Inc. All rights reserved.
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