Article
Biotechnology & Applied Microbiology
William J. Brazelton, Julia M. McGonigle, Shahrzad Motamedi, H. Lizethe Pendleton, Katrina I. Twing, Briggs C. Miller, William J. Lowe, Alessandrina M. Hoffman, Cecilia A. Prator, Grayson L. Chadwick, Rika E. Anderson, Elaina Thomas, David A. Butterfield, Karmina A. Aquino, Gretchen L. Fruh-Green, Matthew O. Schrenk, Susan Q. Lang
Summary: The Lost City hydrothermal field is an example of a microbial ecosystem fueled by energy and carbon from Earth's mantle. This study provides insights into the microbial species and metabolic strategies in the deep seafloor where serpentinization takes place, through analyzing hydrothermal fluids from the Lost City chimneys.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Anna Detman, Michal Bucha, Laura Treu, Aleksandra Chojnacka, Lukasz Plesniak, Agnieszka Salamon, Ewa Lupikasza, Robert Gromadka, Jan Gawor, Agnieszka Gromadka, Wojciech Drzewicki, Marta Jakubiak, Marek Janiga, Irena Matyasik, Mieczyslaw K. Blaszczyk, Mariusz Orion Jedrysek, Stefano Campanaro, Anna Sikora
Summary: The study investigated the influence of dominant acidic products on methane formation pathways and identified a core microbiome and substrate-specific species in a mixed biogas-producing system. Results showed that acetate and lactate strongly favored the acetotrophic pathway of methane formation, while butyrate and propionate favored the hydrogenotrophic pathway. Genome-centric metagenomic analysis revealed a high level of new species and moderate variability in microbial composition.
BIOTECHNOLOGY FOR BIOFUELS
(2021)
Article
Agricultural Engineering
Konstantina Tsigkou, Dimitris Zagklis, Marina Parasoglou, Constantina Zafiri, Michael Kornaros
Summary: This study proposes an easy-to-use protocol for determining the rate-limiting step in anaerobic digestion and validates it through experiments. The findings can guide appropriate actions to increase methane production.
BIORESOURCE TECHNOLOGY
(2022)
Article
Electrochemistry
Abraham Gomez Vidales, Guillaume Bruant, Sasha Omanovic, Boris Tartakovsky
Summary: This study demonstrates the continuous conversion of CO2 to methane, acetate, and ethanol in a Microbial Electrosynthesis Cell with a carbon felt biocathode. In situ deposition of Ni and Fe on the cathode significantly improved the MESC performance. pH adjustment in the cathode compartment could shift the product distribution, and 16S rRNA gene sequencing revealed significant changes in microbial community structure.
ELECTROCHIMICA ACTA
(2021)
Article
Environmental Sciences
Carolina Chaves-Ulate, Fabio Granados-Chinchilla, Cesar Rodriguez
Summary: The study found that the use of poultry litter in agriculture can lead to an increase in antibiotic residues and antibiotic-resistant bacteria in the soil, posing potential threats to the environment and human health. Therefore, a reevaluation of the ways poultry litter is used in agricultural systems and timely adjustments in manufacturing processes are necessary.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Multidisciplinary Sciences
Daniel R. Colman, Emily A. Kraus, Patrick H. Thieringer, Kaitlin Rempfert, Alexis S. Templeton, John R. Spear, Eric S. Boyd
Summary: Using genome-resolved metagenomics, researchers identified two deeply branching bacterial acetogen types in subsurface fracture water communities from the Samail Ophiolite in Oman. These findings provide insights into the ecological functions and metabolic characteristics of acetogens in contemporary serpentinizing systems.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Environmental Sciences
Animesh Tripathi, Dinesh Kumar, Priyank Chavda, Dalip Singh Rathore, Ramesh Pandit, Damer Blake, Fiona Tomley, Madhvi Joshi, Chaitanya G. Joshi, Suresh Kumar Dubey
Summary: Poultry farming in South and Southeast Asian economies is intensifying to meet the increasing demand for protein, but this intensification leads to increased use of antimicrobial drugs and the spread of antimicrobial resistance genes (ARGs), posing a threat to food chains. This study investigates the transmission of ARGs from chicken litter to soil and plants, and demonstrates that ARGs can be transmitted from litter to plant systems. The most common ARGs detected were cmx, ErmX, ErmF, lnuB, TEM-98, and TEM-99, and the common microorganisms included Escherichia coli, Staphylococcus aureus, Enterococcus faecium, Pseudomonas aeruginosa, and Vibrio cholerae. The findings highlight the risks posed to the environment by antimicrobial treatment of poultry and provide valuable knowledge for formulating intervention strategies to prevent ARGs transmission and improve understanding of the impacts on human and environmental health.
ENVIRONMENTAL POLLUTION
(2023)
Article
Agriculture, Dairy & Animal Science
E. H. Cirilo, N. Rohloff Junior, T. S. Andrade, C. Souza, C. Kaufmann, T. L. Kohler, L. I. Datsch, B. S. Vieira, J. G. Vargas Junior, P. L. O. Carvalho, C. Eyng, R. V. Nunes
Summary: This study aimed to evaluate the use of probiotics in broiler chickens challenged with Salmonella Serovar Heidelberg (SH) and found that probiotics improved growth performance, intestinal morphology, blood biochemistry, and litter quality, without affecting liver and fat.
Article
Environmental Sciences
Miguel Semedo, Bongkeun Song
Summary: The intensification of the poultry industry can lead to the increased spread of antibiotic resistance genes (ARGs) in the environment. This study examined the abundance and diversity of ARGs and N cycling genes in sediment microbial communities affected by poultry industry wastewater. The results showed higher abundances of ARGs, especially near the wastewater discharge, indicating potential negative impacts on ecosystem health.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Xu Duan, Jingyang Luo, Yu Su, Chao Liu, Leiyu Feng, Yinguang Chen
Summary: Methanogen plays a crucial role in pollution treatment and energy recovery, but the effects of emerging pollutants (EPs) on methanogen in anaerobic digestion (AD) are not well understood. This study found that chrysene (CH) had a positive effect on the methane production in AD and the growth of methanogen. It was also discovered that CH increased the activity of acetoclastic methanogenesis (AM) and enriched the AM-associated bacteria in the AD process. Furthermore, the presence of CH upregulated the expression of key enzymes in methanogen, enhancing their performance. This study provides insights into the effects of EPs on industrially important methanogen and has implications for AD technology.
Article
Soil Science
Biyensa Gurmessa, Amanda J. Ashworth, Yichao Yang, Kabindra Adhikari, Mary Savin, Phillip Owens, Tom Sauer, Ester Foppa Pedretti, Stefania Cocco, Giuseppe Corti
Summary: The study revealed significant effects of soil moisture regime and forage species on soil bacterial communities, with native grass species showing more diverse microbial assemblages under wet conditions. Overall, microbial diversity was negatively correlated with elevation, indicating microbial preferences for lower elevations.
APPLIED SOIL ECOLOGY
(2021)
Article
Microbiology
Anja B. Meier, Sindy Oppermann, Harold L. Drake, Oliver Schmidt
Summary: Root-derived organic carbon has a stronger stimulatory effect on fermentation processes in peatlands. This was supported by the significantly higher accumulation of fermentation products like ethanol, acetate, propionate, butyrate, H-2 and CO2 in root treatments compared to root-free soil treatments. Analysis of microbial communities showed enrichment of butyrate, propionate and mixed acid fermenters in root treatments, indicating the important role of root-derived organic carbon in promoting fermentation.
FEMS MICROBIOLOGY ECOLOGY
(2021)
Article
Entomology
Thi Huyen Do, Trong Khoa Dao, Hong Duong Nguyen, Nam Hai Truong
Summary: Termites have unique digestive systems with diverse microbial communities that play important roles in the host's nutrition and immunity.
Article
Microbiology
Lauren M. Seyler, Emily A. Kraus, Craig McLean, John R. Spear, Alexis S. Templeton, Matthew O. Schrenk
Summary: The process of serpentinization has implications for both Earth and other planets in our Solar System. By using metabolomics techniques, this study characterized dissolved organic matter in serpentinizing environments and identified potential biosignatures of microbial activity. These findings contribute to our understanding of life in serpentinizing environments and can aid in the search for life on other planets.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Microbiology
John H. Loughrin, Rohan R. Parekh, Getahun E. Agga, Philip J. Silva, Karamat R. Sistani
Summary: This study investigated the changes in microbiome of poultry litter digestate under different treatments. The results showed that both microaeration and sound treatment enhanced biogas production compared to the control, but their combination was less effective than microaeration alone. The microbiome also changed over time, with an increase in microbial diversity relative to the control.
Article
Environmental Sciences
Andressa Rezende Pereira, Nathalia Vercelli de Assis, Aline Gomes de Oliveira Paranhos, Diego Roberto Sousa Lima, Bruno Eduardo Lobo Baeta, Sergio Francisco de Aquino, Silvana de Queiroz Silva
Summary: The addition of fresh manure and ruminal fluid to anaerobic sludge can improve methane production. Next Generation Sequencing analysis showed changes in microbial community in the inoculum. The inoculum with fresh bovine manure had the highest methane production, followed by the inoculum with ruminal fluid.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Raissa Machado Maluf Martins, Yasmim Arantes da Fonseca, Marina Victal Faria, Sergio Francisco de Aquino, Oscar Fernando Herrera Adarme, Bruno Eduardo Lobo Baeta
Summary: In this study, anaerobic co-digestion of cassava wastewater, cassava bagasse, and dairy manure was investigated to produce biogas. A mixture experimental design was used to determine the optimal proportion of each substrate. The results showed that the highest methane yields were obtained with 100% cassava wastewater and a mixture of 66.7% dairy manure, 16.7% cassava bagasse, and 16.7% cassava wastewater. High proportions of cassava bagasse led to low pH and high volatile fatty acid production. An energy balance calculation showed that anaerobic co-digestion could replace 22.5% of the energy demanded by the cassava processing industry.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Engineering, Chemical
Yasmim A. A. da Fonseca, Adonai B. B. de Camargos, Gustavo S. M. Gomes, P. Fregulia, Silvana Q. Q. Silva, Leandro V. A. Gurgel, Bruno E. L. Baeta
Summary: The pH and substrate-to-inoculum ratio (S/I) are crucial parameters in anaerobic fermentation of agroindustrial residues. This study optimized these parameters to produce biobased volatile fatty acids (VFAs) from hydrothermally pretreated olive mill solid waste (HPOMSW). pH was found to significantly influence the mixed culture fermentation of HPOMSW, and microbial community analyses revealed the dominant presence of Proteobacteria and Firmicutes. The experimental data best fit a second-order model for VFAs production at the desirable condition.
Article
Energy & Fuels
Sara Cangussu Bassoli, Yasmim Arantes da Fonseca, Hector Javier Luna Wandurraga, Bruno Eduardo Lobo Baeta, Mateus de Souza Amaral
Summary: The increasing demand for sustainable energy sources has led researchers to focus on the production of biofuels. The hydrothermal liquefaction process is being explored as an alternative method for obtaining biocrude from renewable biomass, with the aim of reducing environmental impacts. This study analyzes all papers published since 2000 related to this process, using bibliometric analysis to create a selected database. The study also highlights the significant role of algae biomass in the liquefaction process. The results indicate the influence of China and the USA in this field, with a large number of publications coming from these countries. The study identifies key authors and highlights important topics such as technical-economic analysis, nutrient and energy recovery, and response surface methodology.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Marine & Freshwater Biology
Emilia Marques Brovini, Gabrielle Rabelo Quadra, Jose R. Paranaiba, Luana Carvalho, Renata de Oliveira Pereira, Sergio Fracisco de Aquino
Summary: Pesticide contamination in water resources is a global threat, especially when considering mixture effects. A study in Brazil found that 3.2% of cities had pesticide occurrence above the limit of detection or quantification in surface freshwaters. The number increased to 117 cities when considering pesticide mixtures. The study highlights the importance of considering mixture effects in environmental risk assessment and the need for revising national environmental legislation to protect aquatic ecosystems in Brazil.
AQUATIC TOXICOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Yasmim Arantes da Fonseca, Leandro Vinicius Alves Gurgel, Bruno Eduardo Lobo Baeta, Giuliano Dragone, Solange I. Mussatto
Summary: This study investigated the reduced-pressure alkaline pretreatment (RPAP) as an innovative approach for efficient protein extraction from lignocellulosic biomass. Optimal conditions were determined to achieve high protein yield, selectivity, and environmental sustainability. This research opens up new opportunities for the valorization of protein-rich lignocellulosic materials in biorefineries.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Aline Gomes de Oliveira Paranhos, Andressa Rezende Pereira, Leticia Dias Nunes Coelho, Silvana de Queiroz Silva, Sergio Francisco De Aquino
Summary: This study investigated the use of hydrothermal pretreatment (HPT) and anaerobic digestion (AD) alone or combined to produce methane and remove contaminants from poultry litter. The results showed that the combination of HPT80 and AD-1S can produce methane and energy, while reducing tylosin concentration and antimicrobial resistance genes (ARG) in the litter.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
