By-Products as Substrates for Production of Selenium-Enriched Pleurotus ostreatus Mushrooms

Silva, Marliane de Cássia Soares da; Alves, Maiane de Paula; Fuentes, Dairon Pérez; Porto, Lucas Eduardo Oliveira; Oliveira, Pedro Vitoriano de; Kasuya, Maria Catarina Megumi; Eller, Monique Renon

doi:10.1007/s12649-021-01586-9

Cited by 7 publications

(3 citation statements)

References 57 publications

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“…Hydrated lime was selected for the study, as it is used in the agriculture for increasing the pH value and for limewash of trees, and has not only this sun-protective purpose, but also has an antifungal and antiseptic purpose. Souza et al [ 8 ] successfully used hydrated lime solution for the sterilization of substrate for Pleurotus ostreatus mushrooms cultivation (substrate was soaked in a 2% solution of hydrated lime). The amount of E. coli and total coliforms were reduced in fecal sludge due to increased pH after the addition of lime [ 81 ].…”

Section: Resultsmentioning

confidence: 99%

“…Certain species of edible mushrooms have unique metabolic capabilities that allow them to break down various organic pollutants and even absorb and accumulate some heavy metals. The ability to accumulate certain metals can be utilized for cultivating mushrooms enriched with specific metals, such as selenium [ 8 ], which could help alleviate selenium deficiency in the diet. These fungi can break down complex organic compounds through enzymatic activity, converting pollutants into simpler, less harmful substances.…”

Section: Introductionmentioning

confidence: 99%

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Searching for Chemical Agents Suppressing Substrate Microbiota in White-Rot Fungi Large-Scale Cultivation

Maruška,

Mickienė,

Kaškonienė

et al. 2024

Microorganisms

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Edible fungi are a valuable resource in the search for sustainable solutions to environmental pollution. Their ability to degrade organic pollutants, extract heavy metals, and restore ecological balance has a huge potential for bioremediation. They are also sustainable food resources. Edible fungi (basidiomycetes or fungi from other divisions) represent an underutilized resource in the field of bioremediation. By maximizing their unique capabilities, it is possible to develop innovative approaches for addressing environmental contamination. The aim of the present study was to find selective chemical agents suppressing the growth of microfungi and bacteria, but not suppressing white-rot fungi, in order to perform large-scale cultivation of white-rot fungi in natural unsterile substrates and use it for different purposes. One application could be the preparation of a matrix composed of wooden sleeper (contaminated with PAHs) and soil for further hazardous waste bioremediation using white-rot fungi. In vitro microbiological methods were applied, such as, firstly, compatibility tests between bacteria and white-rot fungi or microfungi, allowing us to evaluate the interaction between different organisms, and secondly, the addition of chemicals on the surface of a Petri dish with a test strain of microorganisms of white-rot fungi, allowing us to determine the impact of chemicals on the growth of organisms. This study shows that white-rot fungi are not compatible to grow with several rhizobacteria or bacteria isolated from soil and bioremediated waste. Therefore, the impact of several inorganic materials, such as lime (hydrated form), charcoal, dolomite powder, ash, gypsum, phosphogypsum, hydrogen peroxide, potassium permanganate, and sodium hydroxide, was evaluated on the growth of microfungi (sixteen strains), white-rot fungi (three strains), and bacteria (nine strains) in vitro. Charcoal, dolomite powder, gypsum, and phosphogypsum did not suppress the growth either of microfungi or of bacteria in the tested substrate, and even acted as promoters of their growth. The effects of the other agents tested were strain dependent. Potassium permanganate could be used for bacteria and Candida spp. growth suppression, but not for other microfungi. Lime showed promising results by suppressing the growth of microfungi and bacteria, but it also suppressed the growth of white-rot fungi. Hydrogen peroxide showed strong suppression of microfungi, and even had a bactericidal effect on some bacteria, but did not have an impact on white-rot fungi. The study highlights the practical utility of using hydrogen peroxide up to 3% as an effective biota-suppressing chemical agent prior to inoculating white-rot fungi in the large-scale bioremediation of polluted substrates, or in the large-scale cultivation for mushroom production as a foodstuff.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Searching for Chemical Agents Suppressing Substrate Microbiota in White-Rot Fungi Large-Scale Cultivation

Maruška,

Mickienė,

Kaškonienė

et al. 2024

Microorganisms

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“…Nowadays, many poultry industries use organic Se-enriched yeast, but its production cost is high. Researchers also worked on Se enrichment in mushrooms 7 and some of the algal species 8 .…”

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confidence: 99%

Untitled

2023

IJPSR

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Azolla is a fern plant through conducting 27 % of protein content and involves actively in bioremediation. So, this property of this plant is exploited in the production of chelated minerals. In this study, selenium-enriched azolla is evaluated with Japanese quails on the performance of growth and serological parameters. The present study is designed with 525 quails divided into 7 treatments, each with 3 replicates. Each replicate contains 25 birds. The evaluation was done from day-old chick to 5-week age in a deep litter farming system. The birds in each treatment are distributed in a randomized manner irrespective of gender, later grouped into control, 0.2, 0.3, and 0.4ppm organic selenium treatments, along with 0.2, 0.3, 0.4ppm inorganic selenium treatments sequentially. The body weight gain, feed intake and feed conversion rate were noted every week and significant changes were recorded. In performance trials we observed that 0.2ppm organic selenium shows good performance in body weight gain (P<0.013) and feed conversion rate (P<0.02) at a significant level. At 0.2ppm concentration of organic selenium, significant levels of increase in albumin (P<0.017), phosphorus (P<0.014) and protein (P<0.013) were observed. After analyzing biochemical parameters, it is concluded that 0.2ppm organic selenium concentration is showing significant growth performance and benefiting certain biochemical parameters in Japanese quails.

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Effect of Selenium-Enriched Substrate on the Chemical Composition, Mineral Bioavailability, and Yield of Edible Mushrooms

Souza

Silva

Souza

et al. 2022

Biol Trace Elem Res

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By-Products as Substrates for Production of Selenium-Enriched Pleurotus ostreatus Mushrooms

Cited by 7 publications

References 57 publications

Searching for Chemical Agents Suppressing Substrate Microbiota in White-Rot Fungi Large-Scale Cultivation

Searching for Chemical Agents Suppressing Substrate Microbiota in White-Rot Fungi Large-Scale Cultivation

Untitled

Effect of Selenium-Enriched Substrate on the Chemical Composition, Mineral Bioavailability, and Yield of Edible Mushrooms

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