INFLUENCE OF MAGNESIUM (Mg) SOURCE ON THE  Cordyceps militaris (L.) MUSHROOM MYCELIUM GROWTH

Rózsa, Melinda; Măniuțiu, Danut; Egyed, Emese

doi:10.47068/ctns.2021.v10i19.043

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…Rózsa et al [ 42 ] state that Mg is a mineral substance which plays an important role in oxidation processes. In our research, it was detected in range concentration of Mg in the stipe from 880 mg kg −1 to 2400 mg kg −1 and in the cap the range of Mg concentration from 1400 mg kg −1 to 2400 mg kg −1 .…”

Section: Resultsmentioning

confidence: 99%

Accumulation of Selected Metal Elements in Fruiting Bodies of Oyster Mushroom

Golian

Hegedüsová

Mezeyová

et al. 2021

Foods

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The species Pleurotus ostreatus is a commercially, gastronomically, and biotechnologically important fungus. Its strain variability has been little researched. The study provides an evaluation of 59 oyster mushroom production strains in terms of the ability to accumulate selected metals in the cap and stipe. The fruiting bodies were grown under identical model conditions on straw substrate. Metal concentrations (ET-AAS) in dry fruiting bodies ranged in values 1.7–22.4 mg kg−1 for Al, 2.6–9.7 mg kg−1 Ba, 199–4560 mg kg−1 Ca, 1.7–12.0 mg kg−1 Cu, 12–120 mg kg−1 Fe, 16,000–49,500 mg kg−1 K, 876–2400 mg kg−1 Mg, 0.39–11.0 mg kg−1 Mn, 46–920 mg kg−1 Na and 11–920 mg kg−1 for Zn. More Cu, Fe, K, Mg, Mn, Zn accumulated in the cap, while in the stipe Ba was amassed. No significant difference was found between Al, Ca and Na between the accumulation in the cap and the stipe. Furthermore, the dependence of metal uptake from the substrate depending on the fortification of the substrate was confirmed. Statistically significant (p < 0.05) synergistic relationships were shown in pairs Al and Ba, Al and Fe, Ba and Na, Ba and Ca, Ca and Na, Cu and Fe, Fe and Mn, Fe and Zn, K and Mg, K and Mn, K and Zn, Mg and Mn, Mg and Na, Mg and Zn and Mn and Zn in the substrate without the addition of sodium selenate to the substrate. Altered relationships were observed after the application of sodium selenate to the substrate, synergism of Se and Ni, Se and Co and Se and Hg, Cu and Mn, Cu and Fe, Zn and Co, Zn and Ni, Zn and Hg, Mn and Fe, Mn and Cr, Co and Ni, Co and Hg, Ni and Hg, Pb and Cd. The findings of the study may help in the selection of production strains with hypercumulative properties for a particular metal and subsequent use in the addition of fortified fruiting bodies (e.g., with Zn). Based on the study the strains less sensitive to the accumulation of hazardous metals is possible to select for large-scale production, which is important from the perspective of food safety.

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Section: Resultsmentioning

confidence: 99%

Accumulation of Selected Metal Elements in Fruiting Bodies of Oyster Mushroom

Golian

Hegedüsová

Mezeyová

et al. 2021

Foods

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“…In the human body calcium functions as a form of bone tissue, teeth, and various other organs, which helps muscle tissue contraction, regulates heart rate, and nerve function. Meanwhile, magnesium plays a role in biological oxidation processes and respiration as well as affects blood pressure and blood sugar levels ( Rózsa et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Diversity of substrate type, ethnomycology, mineral composition, proximate, and phytochemical compounds of the Schizopyllum commune Fr. in the area along Palu-Koro Fault, Central Sulawesi, Indonesia

Yusran

Erniwati

Khumaidi

et al. 2023

Saudi Journal of Biological Sciences

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Tailored culture strategies to promote antimicrobial secondary metabolite production in Diaporthe caliensis: a metabolomic approach

Hoyos,

Vasquez-Muñoz,

Osorio

et al. 2024

Microb Cell Fact

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Background In the search for new antimicrobial secondary metabolites of fungi, optimizing culture conditions remains a critical challenge, as standard laboratory approaches often result in low yields. While non-selective methods, such as modifying culture media, have been effective in expanding the chemical diversity of fungal metabolites, they have not yet established a direct link to key process parameters crucial for further optimization. This study investigates the capacity of Diaporthe caliensis as a biofactory for biologically active secondary metabolites, employing tailored culture media to explore the relationship between chemical diversity and critical process variables. Results The metabolomic profiles, antibacterial activities, and production yields of the extracts were analyzed to progressively adjust the culture conditions. This study was conducted in five steps, evaluating carbon and nitrogen source concentration, nitrogen source type, salt supplementation, and pH adjustment. Altering the rice starch concentration affected biomass yield per unit of oxygen consumed, while modifications to the nitrogen source concentration influenced both the bioactivity and chemical space by Diaporthe caliensis. Despite changes at the metabolome level, the extracts consistently exhibited potent antibacterial activities, influenced by the nitrogen source, added salts and pH adjustments. For instance, when using corn steep liquor and rice starch, supplemented with micronutrients, different metabolites were produced depending on whether buffer or water was used, though both conditions showed similar antibacterial activities (IC50 ≈ 0.10 mg mL− 1 against Staphylococcus aureus and ≈ 0.14 mg mL− 1 against Escherichia coli). In the treatment where buffer was used to stabilize pH change, there was an increase in the production of phomol-like compounds which are associated with known antibiotic properties. In contrast, in the treatments using water, the drop in pH stimulated the production of previously unidentified metabolites with potential antimicrobial activity. Conclusions This study proposes a strategic methodology for the tailored formulation of culture media aiming to promote the biosynthesis of diverse secondary metabolites. This approach revealed the critical role of nutrient limitation and pH regulation in stimulating the production of polyketide-lactone derivatives, including the antibiotic phomol. Ultimately, the systematic, custom-designed culture conditions developed in this work offer a promising strategy for expanding the chemical diversity of Diaporthe caliensis, while providing valuable insights into the key parameters needed for optimizing this fungal biofactory. Graphical Abstract

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INFLUENCE OF MAGNESIUM (Mg) SOURCE ON THE Cordyceps militaris (L.) MUSHROOM MYCELIUM GROWTH

Cited by 3 publications

References 8 publications

Accumulation of Selected Metal Elements in Fruiting Bodies of Oyster Mushroom

Accumulation of Selected Metal Elements in Fruiting Bodies of Oyster Mushroom

Diversity of substrate type, ethnomycology, mineral composition, proximate, and phytochemical compounds of the Schizopyllum commune Fr. in the area along Palu-Koro Fault, Central Sulawesi, Indonesia

Tailored culture strategies to promote antimicrobial secondary metabolite production in Diaporthe caliensis: a metabolomic approach

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