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

Greenpeace Mushroom Co., GyeongBuk, Korea.
Mycobiology (Impact Factor: 0.51). 06/2009; 37(2):109-13. DOI: 10.4489/MYCO.2009.37.2.109
Source: PubMed


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.

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Available from: Hyeon-Su Ro, Jan 27, 2014
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    • "The king oyster mushroom, Pleurotus eryngii, is one of the most widely cultivated mushrooms. In the commercial cultivation of P. eryngii, the mushroom is grown in wide-mouthed polypropylene bottles in semi-automated confined facilities and for the growth, complex substrates are used, which consist of sawdust, rice bran, powdered corncob, beet pulp, wheat bran, cottonseed hull, and shell powder [1]. Such nutritionally rich complex media are used as a result of long-term modifications of sawdust-based simple media, and these rich media are currently used in all P. eryngii farms to ensure rapid mycelial propagation and high-quality mushroom production. "
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    • "Cultivated as well as wild-growing mushrooms can be valuable sources of readily available macro-and microelements in the human diet. [1] [2] [3] Significant quantities of the essential elements K, Ca, Na, P, Mg, Fe and Mn as well as microelements , e.g. Al and Ba, have been found in mushroom fruiting bodies. "
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    • "The fruiting body of H. marmoreus is one of the major mushroom products in East Asia. The establishment of semi-automatic mushroom cultivation plants has facilitated the commercial cultivation of this mushroom in wide-mouth polypropylene bottles with solid substrates [1]. Strains of H. marmoreus for commercial production typically originated from Japan, where it is the second most popular mushroom [2]. "
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