The study demonstrated that cultivation of Pleurotus ostreatus var. florida, Pleurotus eryngii, Pleurotus cornucopiae and Pleurotus djamor on selenium enriched substrate did not significantly affect biological efficiency (%), but total soluble protein content, total phenolic content, flavonoid content and free radical scavenging activity (%) were found to be significantly improved in Se enriched fruit bodies as compared to the control. Elemental analysis of the Se biofortified Pleurotus mushrooms through SEM-EDS showed signals characteristic for selenium on surface of P. ostreatus. var. florida and P. djamor confirming that selenium was incorporated into the cell wall of these fruiting bodies. The Se content was found to be 22.34 μg g−1 dw in Se enriched wheat straw and 0.059 μg g−1 dw in respective non-enriched wheat straw. Se contents of Se-enriched fruit bodies were found to be higher compared to non-enriched Pleurotus spp. FT-IR spectra of proteins from Pleurotus spp. indicated an increase in the flexibility, unfolding, hydrophilicity of the proteins upon Se supplementation.
Bekiaris, G., Tagkouli, D., Koutrotsios, G., Kalogeropoulos, N., and Zervakis, G.I. (2020). Pleurotus mushrooms content in glucans and ergosterol assessed by ATR-FTIR spectroscopy and multivariate analysis. Foods, 9(4): 535. https://doi.org/10.3390/foods9040535.
Bhatia, P., Aureli, F., Amato, M., Prakash, R., Cameotra, S.S., Tejo Prakash, N., and Cubadda, F. (2013). Selenium bioaccessibility and speciation in biofortified Pleurotus mushrooms grown on selenium-rich agricultural residues. Food Chemistry, 140: 225–230.
Bhatia, P., Bansal, C., Prakash, R., and Tejo Prakash, N. (2014). Selenium uptake and associated anti-oxidant properties in Pleurotus fossulatus cultivated on wheat straw from seleniferous fields. Acta Alimentaria, 43: 280–287.
Blois, M.S. (1958). Antioxidant determinations by the use of a stable free radical. Nature, 181: 1199–1200.
Bozzola, J.J. and Russell, L.D. (1999). Electron microscopy: principles and techniques for biologists. 2nd ed. Jones and Barlett Publishers, Boston, MA.
Garcha, H.S. and Khanna, P.K. (2002). Mushroom growing – a manual. Punjab Agricultural University, Ludhiana, India. pp. 60.
Gąsecka, M., Mleczek, M., Siwulski, M., Niedzielski, P., and Kozak, L. (2016). Phenolic and flavonoid content in Hericium erinaceus, Ganoderma lucidum and Agrocybe aegerita under selenium addition. Acta Alimentaria, 45: 300–308.
Goyal, A., Kalia, A. and Sodhi, H.S. (2015). Selenium stress in Ganoderma lucidum: a scanning electron microscopy appraisal. African Journal of Microbiology Research, 9(12): 855–862.
Kaur, G., Kalia, A., and Sodhi, H.S. (2017). Selenium biofortification of Pleurotus species and its effect on yield, phytochemical profiles and protein chemistry of fruiting bodies. Journal of Food Biochemistry, 42(2): 55–67.
Khurana, A., Tekula, S., Saifi, M.A., Venkatesh, P., and Godugu, C. (2019). Therapeutic applications of selenium nanoparticles. Biomedicine & Pharmacotherapy, 111: 802–812.
Lowry, O.A., Rosenbrough, N.J., Farr, A., and Randall, R.J. (1951). Protein measurement with the Folinphenol reagent. Journal of Biological Chemistry, 193: 265–275.
Mohaček-Grošev, V., Božac, R., and Puppels, G.J. (2001). Vibrational spectroscopic characterization of wild growing mushrooms and toadstools. Spectrochimica Acta Part A, 57: 2815–2829.
Rathore, H., Sharma, A., Prasad, S., and Sharma, S. (2018). Selenium bioaccumulation and associated nutraceutical properties in Calocybe indica mushroom cultivated on Se-enriched wheat straw. Journal of Bioscience and Bioengineering, 126(4): 482–487.
Rzymski, P., Mleczek, M., Niedzielski, P., Siwulski, M., and Gąsecka, M. (2016). Potential of cultivated Ganoderma lucidum mushrooms for the production of supplements enriched with essential elements. Journal of Food Science, 81: 587–592.
Solovyeva, N., Prakash, T., Bhatia, P., Prakash, R., Drobyshev, E., and Michalke, B. (2018). Selenium-rich mushrooms cultivation on a wheat straw substrate from seleniferous area in Punjab, India. Journal of Trace Elements in Medicine and Biology, 50: 362-366.
Swain, T. and Hillis, W.E. (1959). The phenolic constituents of Prunus domestica. I. The quantitative analysis of phenolic constituents. Journal of the Science of Food and Agriculture, 10: 63–68.
WHO (2009). Global Health Risks: mortality and burden of disease attributable to selected major risks. Available online: http://www.who.int/healthinfo/global_burden_disease/GlobalHealthRisks_reportannex.pdf.
Yang, H.J., Zhang, Y., Wang, Z.L., Xue, S.H., Li, S.Y., Zhou, X.R., Zhang, M., Fang, Q., Wang, W.J., Chen, C., Deng, X.H., and Chen, J.H. (2017). Increased chondrocyte apoptosis in kashin-Beck disease and rats induced by T-2 toxin and selenium deficiency. Biomedical and Environmental Sciences, 30(5): 351–362.
Zhishen, J., Mengcheng, T., and Jianming, W. (1999). The determination of flavonoid contents in mulberry and their scavenging effects on superoxide radicals. Food Chemistry, 64(4): 555–559.
Zieba, P., Kała, K., Włodarczyk, A., Szewczyk, A., Kunicki, E., Ekara, A.S., and Zenamuszýnska, B. (2020). Selenium and zinc biofortification of Pleurotus eryngii mycelium and fruiting bodies as a tool for controlling their biological activity. Molecules, 25(4), 889.
Zou, Y., Du, F., Zhang, H., and Hu, Q. (2018). Selenium speciation and biological characteristics of selenium-rich Bailing mushroom, Pleurotus tuoliensis. Emirates Journal of Food &Agriculture, 30(8): 704–708.