Accumulation and distribution of selenium and cesium in the cultivated mushroom Agaricus bisporus — A radiotracer-aided study

Elteren, Johannes T. van; Woroniecka, Urszula D; Kroon, Koos J.

doi:10.1016/s0045-6535(97)10064-9

Cited by 28 publications

(19 citation statements)

References 16 publications

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“…Accumulation of selenium in basidiomata as result of substrate supplementation is in agreement with studies performed on P. cornucopiae, Grifola frondosa and A. bisporus where Se accumulated at different rates (Werner and Beelman 2002;Beelman and Royse 2006). Although information regarding Se absorption and accumulation is available for the above mentioned species of mushrooms, studies on Se decreases or conversion during processing and cooking, Se speciation and bioavailability in mushrooms are especially scarce (Mutanen 1986;Van Elteren et al 1998;Tham et al 1999;Ogra et al 2004). Such information is needed in order to thoroughly evaluate the benefits of Se-enriched mushrooms for the human diet.…”

Section: Discussionsupporting

confidence: 82%

Enhancement of the antioxidants ergothioneine and selenium in Pleurotus eryngii var. eryngii basidiomata through cultural practices

Estrada

Lee

Beelman

et al. 2009

World J Microbiol Biotechnol

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Antioxidants are molecules that may reverse, prevent or slow cellular damage caused by free radicals. Increasing dietary intake of antioxidants is thought to reduce oxidative stress that may contribute to the development of several diseases. Mushrooms are known to contain antioxidants such as selenium, ergothioneine and phenolics that may serve this role. Here we sought to enhance selenium and ergothioneine concentration in Pleurotus eryngii var. eryngii basidiomata by modifying the techniques used for their commercial cultivation. To enhance selenium content in mushrooms, substrates were supplemented with sodium selenite (Na 2 SeO 3 ) to reach selenium concentrations of 5 and 10 lg/g. Basidiomata of one commercial isolate (WC888) accumulated selenium up to 4.6 and 9.3 lg/g (d.w.), respectively. Therefore, a serving size (85 g) of fresh P. eryngii mushrooms produced on substrates supplemented with 5 and 10 lg/g of Na 2 SeO 3 would supply 70.4 and 116.3% of the daily value of selenium (DV = 70 lg), respectively. Since selenium-enriched mushrooms would supply more than 20% of the DV, they could be considered an excellent source of selenium. Ergothioneine concentration was enhanced in mushrooms produced on low-moisture (55%) substrate compared to the commonly used 60% (high-moisture) in commercial cultivation. Mushrooms produced on low-moisture substrate had ergothioneine concentrations of 3.0 mg/g, while mushrooms produced on high-moisture substrate contained 2.2 mg/g or less. Use of a casing overlay for mushroom production resulted in significant yield increases on lowmoisture substrate but not on high-moisture substrate.

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Section: Discussionsupporting

confidence: 82%

Enhancement of the antioxidants ergothioneine and selenium in Pleurotus eryngii var. eryngii basidiomata through cultural practices

Estrada

Lee

Beelman

et al. 2009

World J Microbiol Biotechnol

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“…However, if such complexes are formed, they may be very unstable and their analysis will require dedicated speciation approaches (van Elteren et al, 1998). Unlike in the present study, the concentration ratios for the mycelium decreased with increasing concentrations of alkali elements in the media (Terada et al, 1998).…”

Section: Cfscontrasting

confidence: 61%

“…In principle, fungi can take up and decompose various organic and inorganic substances present in the substrate media Kalač, 2001;Stamets, 2000;Gadd, 2001;Falandysz et al, 2004;Singh, 2007). Chemical elements and their complexes, as well as naturallyoccurring and xenobiotic compounds, can be withdrawn from the medium and, in the case of some chemical species, metabolized by mycelium (van Elteren, Woroniecka, and Kroon, 1998;Gadd, 2001Gadd, , 2007. Some fungal species possess the ability to hyperaccumulate environmental pollutants-for example, radionuclides (Bazała, Bystrzejewska-Piotrowska, andČipáková, 2005)-feature that could be utilized in bioremediation and biorestoration mediated by fungi (Pletsch, de Araujo, and Charlwood, 1999;Gadd, 2001;Stamets, 2005;Singh, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Radiocesium ( 134 Cs and 137 Cs), mainly originating from the accident in the nuclear power plant near Chernobyl (Ukraine) in 1986, is one of the most important radioactive contaminants of European soils (Peplow, 2006). While most studies were conducted on fruiting basidiomycetes collected at different locations (Mietelski et al, 1994;Bystrzejewska-Piotrowska et al, 2003;Bazała et al, 2005;Čipáková, 2005), scarce studies considered the physiological abilities of macromycetes, which are responsible for the transfer of cesium to mushrooms (Terada et al, 1998;van Elteren et al, 1998;Baeza et al, 2000;Kalač, 2001;Bystrzejewska-Piotrowska et al, 2005;Baeza et al, 2006;Bazała, Golda, and Bystrzejewska-Piotrowska, 2008;Bystrzejewska-Piotrowska and Bazała, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Pilot Study of Bioaccumulation and Distribution of Cesium, Potassium, Sodium and Calcium in King Oyster Mushroom (Pleurotus Eryngii) Grown Under Controlled Conditions

Bystrzejewska-Piotrowska

Pianka

Bazała

et al. 2008

International Journal of Phytoremediation

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This pilot study presents preliminary results on interrelations between alkali and alkaline earth elements during their transfer to mycelium and fruitbodies of saprophytic fungi. The accumulation and distribution of four elements (cesium, potassium, sodium, and calcium) was evaluated in king oyster mushroom (Pleurotus eryngii) cultivated under controlled conditions. Elemental composition of caps, stipes, and the substrate was analyzed by atomic absorption/emission spectroscopy to evaluate discrimination, concentration, and transfer factors. The transfer factors determined for all the investigated elements were different and can be put in the following order: Cs > K > Na > Ca. There has been a higher accumulation of cesium in caps than in stipes. Distribution of cesium in fruitbodies depended on the presence of other ions in the substrate. The addition of Ca2+ limited the transport of cesium and potassium from stipes to caps. Sodium and calcium were mainly accumulated in the stipes. In a control experiment, without supplementation with K+, Na+, and Ca2+, approximately 62% of the cesium present in the substrate was extracted by mycelium and transported to the fruitbodies. Possible applications of fruiting saprophytic fungi in bioremediation are discussed.

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“…The study of Spolar et al proved that the consumption of Se-enriched Agaricus bisporus is an effective means of retarding the growth of chemically induced tumors [20]. Van Elteren et al carried out a radiotracer-aided speciation analysis of Se enriched Agaricus bisporus [21]. Rácz et al determined the uptake of selenium in Agaricus bisporus using radionuclide X-ray fluorescence/AES/AAS techniques [22].…”

Section: Introductionmentioning

confidence: 99%

Improving selenium extraction by sequential enzymatic processes for Se-speciation of selenium-enriched Agaricus bisporus

2001

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Sample preparation methods based on the use of proteolytic and cell wall digesting enzymes for the speciation analysis of selenized mushroom were investigated. The sample (Agaricus bisporus; 160 microg total Se per g sample) was grown on compost supplemented with selenized yeast. Experiments were carried out to elucidate the possible role of the cell wall digesting enzymes--Lysing enzyme and Driselase--in the improvement of extraction efficiency with and without inhibiting proteolysis during cell wall digestion. A 3-step procedure applying Lysing enzyme and pronase gave the highest extraction efficiency (89%); however, the best species recovery was achieved by a one-step proteolytic procedure. All the procedures of selenium speciation were controlled by independent ICP-AES analysis measuring the total amount of selenium.

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Accumulation and distribution of selenium and cesium in the cultivated mushroom Agaricus bisporus — A radiotracer-aided study

Cited by 28 publications

References 16 publications

Enhancement of the antioxidants ergothioneine and selenium in Pleurotus eryngii var. eryngii basidiomata through cultural practices

Enhancement of the antioxidants ergothioneine and selenium in Pleurotus eryngii var. eryngii basidiomata through cultural practices

Pilot Study of Bioaccumulation and Distribution of Cesium, Potassium, Sodium and Calcium in King Oyster Mushroom (Pleurotus Eryngii) Grown Under Controlled Conditions

Improving selenium extraction by sequential enzymatic processes for Se-speciation of selenium-enriched Agaricus bisporus

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