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  1. Article: Evaluation of two microcosm systems for co-treatment of LDPE

    Castillo-Toro, Alejandra / Mateus-Maldonado, Juan F / Céspedes-Bernal, Diana N / Peña-Carranza, Leonardo / Páez-Morales, Adriana I / Poutou-Piñales, Raúl A / Salcedo-Reyes, Juan C / Díaz-Ariza, Lucía A / Castillo-Carvajal, Laura C / Pedroza-Rodríguez, Aura M / Gómez-Méndez, Luis D

    Biomaterials research

    2021  Volume 25, Issue 1, Page(s) 21

    Abstract: Background: The co-transformation of solid waste of natural and anthropogenic origin can be carried out through solid-state-fermentation systems to obtain bio-products with higher added value and lower environmental impact.: Methods: To evaluate the ... ...

    Abstract Background: The co-transformation of solid waste of natural and anthropogenic origin can be carried out through solid-state-fermentation systems to obtain bio-products with higher added value and lower environmental impact.
    Methods: To evaluate the effect of Pleurotus ostreatus on co-transformation of oxo-degradable low-density polyethylene (LDPE
    Results: For HMS, the decrease in static contact angle (SCA) was 63.63% (p = 0.00824) and for VMS 74.45% (p = 0.00219), concerning the pristine. Plastic roughness in VMS was higher (26%) concerning the control. Throughout the 135 days, there were fungal growth and consequently laccase (Lac), manganese peroxidase (MnP) and lignin peroxidase (LiP) activities. During the first 75 days, CO
    Conclusions: Finally, the biochar or the biochar enriched with low concentrations of plant growth-promoting microorganisms and inorganic fertilizer favours the germination of Dianthus caryophyllus and Lolium sp., seeds.
    Language English
    Publishing date 2021-07-02
    Publishing country England
    Document type Journal Article
    ZDB-ID 2775188-0
    ISSN 2055-7124 ; 1226-4601
    ISSN (online) 2055-7124
    ISSN 1226-4601
    DOI 10.1186/s40824-021-00222-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Simultaneous bioconversion of lignocellulosic residues and oxodegradable polyethylene by Pleurotus ostreatus for biochar production, enriched with phosphate solubilizing bacteria for agricultural use.

    Moreno-Bayona, Diana A / Gómez-Méndez, Luis D / Blanco-Vargas, Andrea / Castillo-Toro, Alejandra / Herrera-Carlosama, Laura / Poutou-Piñales, Raúl A / Salcedo-Reyes, Juan C / Díaz-Ariza, Lucía A / Castillo-Carvajal, Laura C / Rojas-Higuera, Naydú S / Pedroza-Rodríguez, Aura M

    PloS one

    2019  Volume 14, Issue 5, Page(s) e0217100

    Abstract: A simultaneous treatment of lignocellulosic biomass (LCB) and low density oxodegradable polyethylene (LDPEoxo) was carried-out using Pleurotus ostreatus at microcosm scale to obtain biotransformed plastic and oxidized lignocellulosic biomass. This ... ...

    Abstract A simultaneous treatment of lignocellulosic biomass (LCB) and low density oxodegradable polyethylene (LDPEoxo) was carried-out using Pleurotus ostreatus at microcosm scale to obtain biotransformed plastic and oxidized lignocellulosic biomass. This product was used as raw matter (RM) to produce biochar enriched with phosphate solubilizing bacteria (PSB). Biochar potential as biofertilizer was evaluated in Allium cepa culture at greenhouse scale. Experiments including lignocellulosic mix and LDPEoxo were performed for 75 days in microcosm. Biotransformation progress was performed by monitoring total organic carbon (TOC), CO2 production, laccase (Lac), manganese peroxidase (MnP), and lignin peroxidase (LiP) enzymatic activities. Physical LDPEoxo changes were assessed by atomic force microscopy (AFM), scanning electron microscopy (SEM) and static contact angle (SCA) and chemical changes by Fourier transform infrared spectroscopy (FTIR). Results revealed P. ostreatus was capable of LCB and LDPEoxo biotransformation, obtaining 41% total organic carbon (TOC) removal with CO2 production of 2,323 mg Kg-1 and enzyme activities of 169,438 UKg-1, 5,535 UKg-1 and 5,267 UKg-1 for LiP, MnP and Lac, respectively. Regarding LDPEoxo, SCA was decreased by 84%, with an increase in signals at 1,076 cm-1 and 3,271 cm-1, corresponding to C-O and CO-H bonds. A decrease in signals was observed related to material degradation at 2,928 cm-1, 2,848 cm-1, agreeing with CH2 asymmetrical and symmetrical stretching, respectively. PSB enriched biochar favored A. cepa plant growth during the five-week evaluation period. To the best of our knowledge, this is the first report of an in vitro circular production model, where P. ostreatus was employed at a microcosmos level to bioconvert LCB and LDPEoxo residues from the agroindustrial sector, followed by thermoconversion to produce an enriched biochar with PSB to be used as a biofertilizer to grow A. cepa at greenhouse scale.
    MeSH term(s) Agriculture ; Bacteria/metabolism ; Biodegradation, Environmental ; Biomass ; Charcoal/metabolism ; Fermentation ; Lignin/metabolism ; Onions/growth & development ; Onions/metabolism ; Onions/microbiology ; Phosphates/metabolism ; Pleurotus/growth & development ; Pleurotus/metabolism ; Polyethylene/chemistry
    Chemical Substances Phosphates ; biochar ; lignocellulose (11132-73-3) ; Charcoal (16291-96-6) ; Polyethylene (9002-88-4) ; Lignin (9005-53-2)
    Language English
    Publishing date 2019-05-16
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0217100
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Antimicrobial Resistance in the Environment: Towards Elucidating the Roles of Bioaerosols in Transmission and Detection of Antibacterial Resistance Genes.

    George, Paul B L / Rossi, Florent / St-Germain, Magali-Wen / Amato, Pierre / Badard, Thierry / Bergeron, Michel G / Boissinot, Maurice / Charette, Steve J / Coleman, Brenda L / Corbeil, Jacques / Culley, Alexander I / Gaucher, Marie-Lou / Girard, Matthieu / Godbout, Stéphane / Kirychuk, Shelley P / Marette, André / McGeer, Allison / O'Shaughnessy, Patrick T / Parmley, E Jane /
    Simard, Serge / Reid-Smith, Richard J / Topp, Edward / Trudel, Luc / Yao, Maosheng / Brassard, Patrick / Delort, Anne-Marie / Larios, Araceli D / Létourneau, Valérie / Paquet, Valérie E / Pedneau, Marie-Hélène / Pic, Émilie / Thompson, Brooke / Veillette, Marc / Thaler, Mary / Scapino, Ilaria / Lebeuf, Maria / Baghdadi, Mahsa / Castillo Toro, Alejandra / Cayouette, Amélia Bélanger / Dubois, Marie-Julie / Durocher, Alicia F / Girard, Sarah B / Diaz, Andrea Katherín Carranza / Khalloufi, Asmaâ / Leclerc, Samantha / Lemieux, Joanie / Maldonado, Manuel Pérez / Pilon, Geneviève / Murphy, Colleen P / Notling, Charly A / Ofori-Darko, Daniel / Provencher, Juliette / Richer-Fortin, Annabelle / Turgeon, Nathalie / Duchaine, Caroline

    Antibiotics (Basel, Switzerland)

    2022  Volume 11, Issue 7

    Abstract: Antimicrobial resistance (AMR) is continuing to grow across the world. Though often thought of as a mostly public health issue, AMR is also a major agricultural and environmental problem. As such, many researchers refer to it as the preeminent One Health ...

    Abstract Antimicrobial resistance (AMR) is continuing to grow across the world. Though often thought of as a mostly public health issue, AMR is also a major agricultural and environmental problem. As such, many researchers refer to it as the preeminent One Health issue. Aerial transport of antimicrobial-resistant bacteria via bioaerosols is still poorly understood. Recent work has highlighted the presence of antibiotic resistance genes in bioaerosols. Emissions of AMR bacteria and genes have been detected from various sources, including wastewater treatment plants, hospitals, and agricultural practices; however, their impacts on the broader environment are poorly understood. Contextualizing the roles of bioaerosols in the dissemination of AMR necessitates a multidisciplinary approach. Environmental factors, industrial and medical practices, as well as ecological principles influence the aerial dissemination of resistant bacteria. This article introduces an ongoing project assessing the presence and fate of AMR in bioaerosols across Canada. Its various sub-studies include the assessment of the emissions of antibiotic resistance genes from many agricultural practices, their long-distance transport, new integrative methods of assessment, and the creation of dissemination models over short and long distances. Results from sub-studies are beginning to be published. Consequently, this paper explains the background behind the development of the various sub-studies and highlight their shared aspects.
    Language English
    Publishing date 2022-07-19
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2681345-2
    ISSN 2079-6382
    ISSN 2079-6382
    DOI 10.3390/antibiotics11070974
    Database MEDical Literature Analysis and Retrieval System OnLINE

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