Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
International Journal of Medicinal Mushrooms
Facteur d'impact: 1.423 Facteur d'impact sur 5 ans: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN Imprimer: 1521-9437
ISSN En ligne: 1940-4344

Volumes:
Volume 21, 2019 Volume 20, 2018 Volume 19, 2017 Volume 18, 2016 Volume 17, 2015 Volume 16, 2014 Volume 15, 2013 Volume 14, 2012 Volume 13, 2011 Volume 12, 2010 Volume 11, 2009 Volume 10, 2008 Volume 9, 2007 Volume 8, 2006 Volume 7, 2005 Volume 6, 2004 Volume 5, 2003 Volume 4, 2002 Volume 3, 2001 Volume 2, 2000 Volume 1, 1999

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v7.i3.1120
484 pages

Mineral Uptake by First Flush Mushrooms (Pleurotus spp.) Cultivated on Various Agro-Processing Waste

Michael Rudolf Domegure Youri
Food and Drugs Board, P.O. Box CT 2783, Cantonments, Accra, Ghana
Kwaku Tano-Debrah
Department of Nutrition and Food Science, University of Ghana, P.O. Box LG 134 Legon, Accra, Ghana

RÉSUMÉ

The use of agro-processing waste as raw materials for mushroom production was investigated to define a strategy for bioconverting these wastes into edible basidiomata and, hence, retrieve some of the lost nutrients. Sampled wastes (corn cobs and maize bran, cocoa husk and shells, oil palm fiber, empty bunch and kernel cake, spent malt, pito mash, yam, cassava, cocoyam, potato and plantain peelings, rice husk and bran) from both industrial and traditional agro-processors were characterized chemically and formulated into media. In all, 10 formulations were derived. Two species of PleurotusP. ostreatus (strain EM1) and P. eous (strain OT3)—were used for substrate evaluation. During this cultivation process the ability or lack of these species to take up minerals (Ca, Cu, Fe, Mg, Mn, P, K, and Na) from the formulated media was investigated.
Mineral absorption by the first flush mushrooms during growth on the various media was determined and compared to the amount present in the original and spent media. Ca, Cu, Fe, Mg, Mn, and P were determined using a Perkin Elmer 3110 Atomic Absorption Spectrometer. K and Na were determined using a Jenway PFP7 Flame Photometer. Analysis of variance between the various determinations was done. The correlation between concentration of elements and total yield was also investigated. There was uptake of all the minerals determined, as present in the media, by the first flush mushrooms. Intake, however, of elements by mushrooms differed considerably among the various minerals to the extent that, although mushrooms might be observed to behave almost as a filter for some elements, they accumulate others. The data suggested that K and P had the highest concentrations in the mushrooms, while Mn and Ca had the lowest. Mg, Ca, Mn, and K concentrations were lower in the mushrooms compared to the initial and exhausted media, indicating that there was no appreciable accumulation after their infiltration into the mushrooms. There was appreciable accumulation of Cu, as the concentration in the mushrooms was higher than in the initial media. The concentration of P in mushrooms was comparable to that of the initial media. There was accumulation of Na in the mushrooms and the concentration was comparable to that in the exhausted media. The concentration of K was generally high compared to the other minerals. Calcium was not significantly present in the mushrooms analyzed despite its high concentration in the formulated media.
The highest colonization rates and sporophore yields were achieved from corn cob and cocoa husk-based substrates, whereas lesser yields were produced from rice husk-based media. Yield from tuber-based (cassava, yam, and cocoyam peelings) media could not be relied upon due to contamination that resulted in incomplete spawn run. There was generally no correlation between mineral uptake and yield.
The study generally demonstrated the ability of Pleurotus to absorb these elements during cultivation, albeit to varying extents. Hence, through controlled addition of specific minerals to substrates on which mushrooms are cultivated, the elements can be absorbed by the growing mycelium, and translocated to the sporophores. The mushrooms then could become good or even excellent sources of these minerals.


Articles with similar content:

Preliminary Studies on Mating and Improved Strain Selection in the Tropical Culinary-Medicinal Mushroom Lentinus squarrosulus Mont. (Agaricomycetideae)
International Journal of Medicinal Mushrooms, Vol.12, 2010, issue 2
Elijah I. Ohimain, Omoanghe S. Isikhuemhen, Clementina O. Adenipekun
Proximal Composition, Nutraceutical Properties, and Acute Toxicity Study of Culinary-Medicinal Oyster Mushroom Powder, Pleurotus ostreatus (Agaricomycetes)
International Journal of Medicinal Mushrooms, Vol.20, 2018, issue 12
Marcos Meneses, Yaixa Beltrán, Isabelle Gaime-Perraud, Nora Garcia, Yamila Lebeque, Serge Moukha, Humberto J. Morris, Gabriel Llaurado, Rosa C. Bermúdez
Selenium Enrichment of Pleurotus cornucopiae (Paulet) Rolland and Grifola frondosa (Dicks.:Fr.) S.F. Gray Mushrooms
International Journal of Medicinal Mushrooms, Vol.8, 2006, issue 1
Robert B. Beelman, Daniel J. Royse
Cultivation of Culinary-Medicinal Lion's Mane Mushroom Hericium erinaceus (Bull.: Fr.) Pers. (Aphyllophoromycetideae) on Substrate Containing Sunflower Seed Hulls
International Journal of Medicinal Mushrooms, Vol.9, 2007, issue 1
Nestor Raul Curvetto, Debora Figlas, Ramiro Gonzalez Matute
Cultivation of the King-Oyster Mushroom Pleurotus eryngii (DC.:Fr.) Quél. on Substrates Deriving from the Olive-Oil Industry
International Journal of Medicinal Mushrooms, Vol.7, 2005, issue 3
Georgios I. Zervakis