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Article

Supplementation with Magnesium Salts—A Strategy to Increase Nutraceutical Value of Pleurotus djamor Fruiting Bodies

by
Piotr Zięba
1,
Agnieszka Sękara
1,*,
Emilia Bernaś
2,
Agata Krakowska
3,
Katarzyna Sułkowska-Ziaja
4,
Edward Kunicki
1,
Małgorzata Suchanek
5 and
Bożena Muszyńska
4
1
Department of Horticulture, Faculty of Biotechnology and Horticulture, University of Agriculture in Kraków, 29 Listopada 54, 31-425 Kraków, Poland
2
Department of Plant Product Technology and Nutrition Hygiene, Faculty of Food Technology, University of Agriculture in Krakow, 122 Balicka Street, 30-149 Kraków, Poland
3
Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Kraków, Poland
4
Department of Pharmaceutical Botany, Faculty of Pharmacy, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Kraków, Poland
5
Department of Analytical Chemistry and Biochemistry, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland
*
Author to whom correspondence should be addressed.
Molecules 2021, 26(11), 3273; https://doi.org/10.3390/molecules26113273
Submission received: 25 March 2021 / Revised: 21 May 2021 / Accepted: 26 May 2021 / Published: 28 May 2021
(This article belongs to the Special Issue Bioactives and Functional Ingredients in Foods and Beverages 2.0)
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Abstract

The use of substrates supplemented with minerals is a promising strategy for increasing the nutraceutical value of Pleurotus spp. The current research was performed to analyze the effect of substrate supplementation with magnesium (Mg) salts on the Mg content, biomass, and chemical composition of pink oyster mushroom (Pleurotus djamor) fruiting bodies. Before inoculation, substrate was supplemented with MgCl2 × 6 H2O and MgSO4, both salts were applied at three concentrations: 210, 420, and 4200 mg of Mg per 2 kg of substrate. The harvest period included three flushes. Substrate supplementation with 4200 mg of Mg caused the most significant decrease in mushroom productivity, of about 28% for both Mg salts. The dry matter content in fruiting bodies was significantly lower in the treatment in which 210 mg of Mg was applied as MgSO4 in comparison to the control. Supplementation effectively increased the Mg content in fruiting bodies of P. djamor by 19–85% depending on the treatment, and significantly affected the level of remaining bioelements and anions. One hundred grams of pink oyster fruiting bodies, supplemented with Mg salts, provides more than 20% of the Mg dietary value recommended by the Food and Drug Administration (FDA); thus, supplementation can be an effective technique for producing mushrooms that are rich in dietary Mg. Although P. djamor grown in supplemented substrate showed lower productivity, this was evident only in the fresh weight because the differences in dry weight were negligible. Mg supplementation increased the antioxidant activity of the fruiting bodies, phenolic compounds, and some amino acids, including L-tryptophan, and vitamins (thiamine and l-ascorbic acid).
Keywords: pink oyster; Pleurotus djamor; functional food; biofortification; magnesium pink oyster; Pleurotus djamor; functional food; biofortification; magnesium

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MDPI and ACS Style

Zięba, P.; Sękara, A.; Bernaś, E.; Krakowska, A.; Sułkowska-Ziaja, K.; Kunicki, E.; Suchanek, M.; Muszyńska, B. Supplementation with Magnesium Salts—A Strategy to Increase Nutraceutical Value of Pleurotus djamor Fruiting Bodies. Molecules 2021, 26, 3273. https://doi.org/10.3390/molecules26113273

AMA Style

Zięba P, Sękara A, Bernaś E, Krakowska A, Sułkowska-Ziaja K, Kunicki E, Suchanek M, Muszyńska B. Supplementation with Magnesium Salts—A Strategy to Increase Nutraceutical Value of Pleurotus djamor Fruiting Bodies. Molecules. 2021; 26(11):3273. https://doi.org/10.3390/molecules26113273

Chicago/Turabian Style

Zięba, Piotr, Agnieszka Sękara, Emilia Bernaś, Agata Krakowska, Katarzyna Sułkowska-Ziaja, Edward Kunicki, Małgorzata Suchanek, and Bożena Muszyńska. 2021. "Supplementation with Magnesium Salts—A Strategy to Increase Nutraceutical Value of Pleurotus djamor Fruiting Bodies" Molecules 26, no. 11: 3273. https://doi.org/10.3390/molecules26113273

APA Style

Zięba, P., Sękara, A., Bernaś, E., Krakowska, A., Sułkowska-Ziaja, K., Kunicki, E., Suchanek, M., & Muszyńska, B. (2021). Supplementation with Magnesium Salts—A Strategy to Increase Nutraceutical Value of Pleurotus djamor Fruiting Bodies. Molecules, 26(11), 3273. https://doi.org/10.3390/molecules26113273

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