Determination of Mineral Components in the Cultivation Substrates of Edible Mushrooms and Their Uptake into Fruiting Bodies

Abstract

The mineral contents of the cultivation substrates, fruiting bodies of the mushrooms, and the postharvest cultivation substrates were determined in cultivated edible mushrooms Pleurotus eryngii, Flammulina velutipes, and Hypsizigus marmoreus. The major mineral elements both in the cultivation substrates and in the fruiting bodies were K, Mg, Ca, and Na. Potassium was particularly abundant ranging 10~13 g/kg in the cultivation substrates and 26~30 g/kg in the fruiting bodies. On the contrary, the calcium content in the fruiting bodies was very low despite high concentrations in the cultivation substrates, indicating Ca in the cultivation substrates is in a less bio-available form or the mushrooms do not have efficient Ca uptake channels. Among the minor mineral elements determined in this experiment, Cu, Zn, and Ni showed high percentage of transfer from the cultivation substrates to the fruiting bodies. It is noteworthy that the mineral contents in the postharvest cultivation substrates were not changed significantly which implies that the spent cultivation substrates are nutritionally intact in terms of mineral contents and thus can be recycled as mineral sources and animal feeds.

Selenium Uptake by Edible Oyster Mushrooms (Pleurotus sp.) from Selenium-Hyperaccumulated Wheat Straw

“…The selenium concentration in unenriched substrate was found to be higher (1.960.8 mg Se/g dw) than in the earlier reports which lay in the range of 0.09-0.19 mg Se/g dw in different substrates (27,28) and the resulting concentrations in fruiting bodies were in the range of 2.9-5.2 mg Se/g dw, which is almost comparable to the range (0.12-3.4 mg Se/g dw) of selenium conentartion in wild and edible species of Pleurotus (29)(30)(31). The fruiting bodies (first flush) of all species of Pleurotus harvested from Se-rich wheat straw containing a total Se concentration of 24.060.2 mg Se/g dw, were noted to accumulate significantly higher (p,0.0001) selenium as compared to control mushrooms grown on control wheat straw (1.960.8 mg Se/g dw).…”

Screening the Multi-Element Content of Pleurotus Mushroom Species Using inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES)

“…The fruit bodies of P. ostreatus and P. pulmonarius strains were collected from 19 mushroom farms. The tested fruit bodies were obtained from each mushroom grower in several cultivation cycles each year Bernaś et al 2006;Maihara et al 2008;Muñoz et al 2005;Kalač 2010;Costa-Silva et al 2011;Zhu et al 2011) b P. florida (Alam et al 2008;Mallikarjuna et al 2013) c P. djamor (Rodriguez Estrada andRoyse 2007, Guo et al 2007;Lee et al 2009, Mallikarjuna et al 2013 d P. citrinopileatus (Rodrigues et al 2015) e P. eryngii (Rodriguez Estrada andRoyse 2007, Akyüz andKirbağ 2010;Zhu et al 2011) f P. pulmonarius (Oliveira Silva et al 2002;Vetter 2003, 2005, Borovicka et al 2011 in the period 2009-2015. The weight of a single fruit body sample amounted to 1 kg.…”

Nutritional composition of bioproducts generated from semi-solid fermentation of pineapple peel by edible mushrooms

“…Machado et al (2015) had good values of potassium, phosphorus, iron, zinc and copper as in this study. Lee et al (2009) and Medina et al (2009) also observed increase in the concentration of minerals in the substrates after cultivation. According to Lee et al (2009), the mineral increasing is probably due to the supply of mineral elements through moisture during the cultivation.…”

“…Lee et al (2009) and Medina et al (2009) also observed increase in the concentration of minerals in the substrates after cultivation. According to Lee et al (2009), the mineral increasing is probably due to the supply of mineral elements through moisture during the cultivation. Lee et al (2009) found potassium and zinc values close to those found in this work (10.44 g/kg and 29 mg/kg, respectively).…”

“…According to Lee et al (2009), the mineral increasing is probably due to the supply of mineral elements through moisture during the cultivation. Lee et al (2009) found potassium and zinc values close to those found in this work (10.44 g/kg and 29 mg/kg, respectively). The amounts of phosphorus, potassium, copper and manganese in this study were higher than those found by Medina et al (2009).…”