The edible mushroomLaetiporus sulphureusas potential source of natural antioxidants

Abstract

Hot water extract (LN), partially purified polysaccharides (LP) and hot alkali extracted polysaccharides (LNa) obtained from fruiting bodies of the wild basidiomycete Laetiporus sulphureus were examined for their antioxidant activities. LNa was the most active antioxidant, as shown by the median effective concentrations (EC50 values) of 1,1-diphenyl-2-picrylhydrazyl (DPPH) scavenging activity (0.5 ± 0.2 mg/ml), reducing power (4.0 ± 0.3 mg/ml) and ferrous ion-chelating ability (1.5 ± 0.1 mg/ml). LNa contained the highest level of α-glucan (17.3 ± 1.2 g/100 g dw), whereas LP contained mostly β-glucans (66.8 ± 1.3 g/100 g dw). The prevalent monosaccharide in all extracts was glucose. The EC50 values of all three antioxidant activity assays were well-correlated with the α-glucan content. Strong and significant correlation was found between total phenolic compounds and DPPH scavenging ability and also reducing power. The three investigated extracts (at concentrations of 0.1-10 mg/ml) were not toxic to HTR-8/SVneo trophoblast cell line.

Optimization of polysaccharides extraction from Tricholoma mongolicum Imai and their antioxidant and antiproliferative activities

“…In recent years, T. mongolicum Imai has drawn more and more attention because of its bioactivities. Polysaccharides isolated from T. mongolicum Imai (TMIPs) have multiple activities, such as antioxidant (Klaus et al, 2013;Nandi et al, 2014), antitumor (Mizuno et al, 1990;Song, Liu, Kong, Chang, & Song, 2013) and hepatoprotective effects (Liu et al, 2014a).…”

Phenolic Contents, Oxidant/Antioxidant Potential and Heavy Metal Levels in Cyclocybe cylindracea

“…Because of oxidative stress induced by free radicals, serious health problems such as neurological, cardiologic diseases, cirrhosis, diabetes, leukemia and necrosis may occur. 12,13,14 Investigation of antioxidant activity and oxidative stress index of mushrooms as potent natural antioxidant used in inhibition of oxidative stress is very important to determination of new natural antioxidant materials. Heavy metal contents in mushrooms are higher than agricultural plants, vegetables and fruits.…”

Laetiporus sulphureus (Bull.: Fr.) Murr. as Food as Medicine

“…10 Thus the mushroom is often called as "crab of the woods", "chicken of the woods", "chicken polypore" or "chicken mushroom" and can be considered as an alternate for chicken in vegetarian diet. 5 This unique fragrance and texture have influenced the use of young fruit bodies as a valuable food source for many years in oriental cultures. Unlike other polypores, the mushroom has a long history of consumption especially in North America, Japan and Thailand where it is considered a delicacy.…”