Enhanced Tolerance to Cadmium in Bacterial-Fungal Co-Cultures as a Strategy for Metal Biorecovery from e-Waste

Losa, Geremia; Bindschedler, Saskia

doi:10.3390/min8040121

Cited by 8 publications

(3 citation statements)

References 77 publications

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“…This enhancement could be related to the degradation of phenolics by T. harzianum MT2. In agreement, previous reports show that co-cultures of bacteria and fungi have advantages in terms of resistance to toxic compounds (Losa and Bindschedler, 2018). These results are relevant since they indicate that the biomass for the first stage of sequential co-cultures can also be produced in vinasse allowing a higher utilization of vinasse and lower costs of production.…”

Section: Discussionsupporting

confidence: 92%

Cultivation of plant-growth promoters in vinasse: contributions for a circular and green economy

Torres

Valdez

Angelicola

et al. 2022

Preprint

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Vinasse is a by-product with a key role in the circular economy. In this work, we analyze sugarcane vinasse as culture medium for obtaining single and mixed inoculants. Trichoderma harzianum was cultured in single and sequential co-culture with Pseudomonas capeferrum or Rhizobium sp. Fungal biomass was higher in vinasse than in a laboratory medium. Residual vinasses presented almost neutral pH and lower conductivities and toxicity than raw vinasse. Fertigation with residual vinasses improves characteristics of soil evidenced in the total N, cation exchange capacity, urease and acid phosphatase, and the microbial metabolic diversity, in comparison to raw vinasse. The evaluation of the treatment indicates that vinasse is suitable for the production of inoculants containing T. harzianum and that the co-culture with P. capeferrum improves the characteristics of the residual vinasse in comparison to Rhizobium sp. Obtaining this valuable biomass in vinasse is relevant for the circular and green economy.

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Section: Discussionsupporting

confidence: 92%

Cultivation of plant-growth promoters in vinasse: contributions for a circular and green economy

Torres

Valdez

Angelicola

et al. 2022

Preprint

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“…With the acidification of the medium increases the mobility of metals, including zinc. These fungi can concentrate several ions such as Pb, Cd, Cu, Zn and Ni [62]. The use of agro-industrial residues is strongly influenced by the presence of minerals.…”

Section: General Aspects Of Residuesmentioning

confidence: 99%

Characterization and Evaluation of Agro-industrial Residues of Bacuri (Platonia Insignis Mart.) and Sweet Cassava (Manihot Esculenta Crantz) in the Production of 6pentyl-α-pyrone by Solid State Fermentation

Nascimento

2023

Preprint

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SUMMARY The 6 pentyl-α-pyrone (6-PP) is a natural aroma, with a coconut smell, obtained by fermentation processes with fungi of the genus Trichoderma. The objective of this research was to evaluate the nutritional potential of bacuri bark and sweet cassava peels in the production of coconut bioaroma through solid state fermentation (SSF). To this end, analyses of physicochemical characterization, antimicrobial, volatile, surface, and composition activities were performed, including lignocellulosic profile, among others. The fermentations were conducted under humidification conditions with water, nutrient solution without additive and nutrient solutions with glucose or sucrose during 9 days. The quantification of aroma compounds was performed by gas chromatography, aided by solid phase microextraction. The results showed that there was inhibition of fungal growth in the bacuri residue motivated by the presence of inhibitory compounds, especially resin. The residues of sweet cassava, with a high percentage of starch, were favorable to microbial growth, however, the quantification of the bioaroma presented values below 7.0 ppm. Therefore, strategies to increase this production were necessary and the use of sweet cassava bark as a solid supplement, mixed with bacuri residue, was satisfactory reaching concentrations of 26.43±5.72ppm in the presence of nutrient solution with glucose; 42± 6.8ppm with nutrient solution only; 142±2.46 ppm only with distilled water and 202.46±1.30 ppm with sucrose nutrient solution, showing the efficiency of the mixture for fungal development conditions and also for aroma production.

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“…As e-waste is a highly complex mixture of various toxic heavy metals, noble metals and plastics, understanding the effect of bacterial-fungal interactions on these materials is important to control the release of toxic side products. This was studied by Losa and Bindschedler [19], who assessed the synergistic bioremediation capabilities of bacterial-fungal couples to mobilize and immobilize cadmium in e-waste. They suggested that using microbial consortia, rather than single species, represents an innovative alternative to traditional bioremediation approaches, especially for the development of new biotechnological approaches in urban mining.…”

mentioning

confidence: 99%

Editorial for Special Issue “Geomicrobiology and Biogeochemistry of Precious Metals”

Reith

Shuster

2018

Minerals

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Enhanced Tolerance to Cadmium in Bacterial-Fungal Co-Cultures as a Strategy for Metal Biorecovery from e-Waste

Cited by 8 publications

References 77 publications

Cultivation of plant-growth promoters in vinasse: contributions for a circular and green economy

Cultivation of plant-growth promoters in vinasse: contributions for a circular and green economy

Characterization and Evaluation of Agro-industrial Residues of Bacuri (Platonia Insignis Mart.) and Sweet Cassava (Manihot Esculenta Crantz) in the Production of 6pentyl-α-pyrone by Solid State Fermentation

Editorial for Special Issue “Geomicrobiology and Biogeochemistry of Precious Metals”

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