Article
Engineering, Environmental
Siti Shilatul Najwa Sharuddin, Siti Rozaimah Sheikh Abdullah, Hassimi Abu Hasan, Ahmad Razi Othman, Nur 'Izzati Ismail
Summary: This study isolated multifunctional rhizobacteria from different sources, such as rhizosphere soils and crude oil sludge, and found that these bacteria can efficiently degrade hydrocarbons while producing biosurfactants. The presence of biosurfactants was confirmed by SEM images, showing the formation of exopolymers that enhance the degradation process.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Engineering, Environmental
Ahmad Razi Othman, Nur Shuhada Ismail, Siti Rozaimah Sheikh Abdullah, Hassimi Abu Hasan, Setyo Budi Kurniawan, Siti Shilatul Najwa Sharuddin, Nur Izzati Ismail
Summary: The study found that biosurfactant-producing fungi isolated from crude oil sludge have the potential to degrade total petroleum hydrocarbons in contaminated sludge. Among them, Aspergillus fumigatus Shu2 showed better biosurfactant production and TPH degradation abilities.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Balakrishnan Muthukumar, Punniyakotti Parthipan, Mohamad S. AlSalhi, Natarajan Srinivasa Prabhu, T. Nageswara Rao, Sandhanasamy Devanesan, Murali Kannan Maruthamuthu, Aruliah Rajasekar
Summary: Two biosurfactant producing Pseudomonas aeruginosa strains were isolated from motor oil contaminated soil for crude oil, alkane and PAH degradation studies. The isolated strains showed efficient degradation of these hydrocarbons and higher biosurfactant production, leading to increased degradation efficiency. Their potential for biodegradation of high molecular weight hydrocarbons was demonstrated through the study.
Article
Green & Sustainable Science & Technology
Swati Patel, Gaurav Shah
Summary: This study focuses on the biodegradation of mixed hydrocarbon compounds, such as burnt engine oil and n-alkane, by bacterial isolates from automobile garage soil. The selected strains, identified as Enterococcus mundtii (EM) and Bacillus specie (BS), showed efficient biodegradation and biosurfactant production. The degradation rates of burnt engine oil were 55.15% and 65.54%, and the degradation rates of n-alkane were 65.17% and 35.74% for EM and BS, respectively.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Agricultural Engineering
Huan Yan, Ling Xu, Junfeng Su, Hao Wei, Xuan Li, Shumiao Cao
Summary: The SMX degrading strain Proteus mirabilis sp. ZXY4 with surfactant manufacturing potential was isolated from sludge. FTIR analysis revealed that the biosurfactant generated by strain ZXY4 was glycolipid. 3D-EEM analysis demonstrated a strong connection between SMX biodegradation and biosurfactants, suggesting that the synergistic effect of biodegradation and biosurfactant enhances strain ZXY4's SMX degradation performance.
BIORESOURCE TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Hannah D. Schweitzer, Heidi J. Smith, Elliott P. Barnhart, Luke J. McKay, Robin Gerlach, Alfred B. Cunningham, Rex R. Malmstrom, Danielle Goudeau, Matthew W. Fields
Summary: This study investigates the potential genes and functional groups involved in hydrocarbon degradation to methane in coal seams from the Powder River Basin using environmentally relevant metagenomes and BONCAT-FACS derived translationally active metagenomes. The results reveal the presence of biosurfactants, aerobic dioxygenases, and anaerobic phenol degradation pathways in the active populations across the sampled coal seams.
NPJ BIOFILMS AND MICROBIOMES
(2022)
Article
Agronomy
Ekambaram Gayathiri, Palanisamy Prakash, Natchimuthu Karmegam, Sunita Varjani, Mukesh Kumar Awasthi, Balasubramani Ravindran
Summary: This review critically examines biosurfactants, their usage, related research, and challenges. Biosurfactants, produced by various microorganisms, have distinct properties compared to synthetic surfactants, such as mild production conditions, multifunctionality, higher biodegradability, and lower toxicity. They are widely used in the food industry, agriculture, industrial sectors, and environmental recreation.
Article
Biotechnology & Applied Microbiology
Cindy Baburam, Naser Aliye Feto
Summary: This study identified two novel dehydrogenases with high activity for conversion of alkyl aldehydes to carboxylic acids, which can be used in microbial cocktails for biodegradation of alkanes. The enzymatic properties were characterized through biochemical analysis, providing important insights for downstream applications.
Article
Engineering, Environmental
Saeed Molaei, Gholamreza Moussavi, Nasser Talebbeydokhti, Sakine Shekoohiyan
Summary: This study utilized an Anoxic Packed Bed Biofilm Reactor (AnPBR) inoculated with biosurfactant-producing bacteria for the biodegradation of petroleum wastewater. The results showed that highly acclimated biomass decreased the start-up phase period, and increasing initial TPH concentration resulted in higher removal efficiencies. Additionally, decreasing HRT led to an increase in specific hydrocarbon utilization rate.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Arumugam Arul Prakash, Natarajan Srinivasa Prabhu, Aruliah Rajasekar, Punniyakotti Parthipan, Mohamad S. AlSalhi, Sandhanasamy Devanesan, Muthusamy Govarthanan
Summary: This study found that the use of BS can enhance the efficiency of bioremediation in treating crude oil hydrocarbon pollutants, leading to faster migration and degradation rates of organic materials.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Feng Zeng, Hanghai Zhou, Xiaoyun Lin, Yanhong Li, Yanpeng Liang, Qinglin Xie, Edidiong Okokon Atakpa, Chaofeng Shen, Chunfang Zhang
Summary: In this study, a bacterial strain named Bacillus sp. SS15, capable of producing both bioflocculant (BF) and biosurfactant (BS), was isolated from oil-contaminated mudflat sediment. The BS produced by SS15 was identified as lipopeptide, which showed excellent surface tension reduction and strong tolerance. Meanwhile, the BF produced by SS15 exhibited high flocculating activity and was confirmed to be thermostable, salttolerant, and alkaliphilic. Through combined treatment of bioremediation and flocculation, the removal of various pollutants was greatly promoted. The genome analysis revealed abundant genes related to BF and BS synthesis in strain SS15. The findings demonstrate the promising prospect of Bacillus sp. SS15 in the remediation of fracturing flowback fluids (FFFs).
Article
Environmental Sciences
Jeevanandam Vaishnavi, Sandhanasamy Devanesan, Mohamad S. AlSalhi, Aruliah Rajasekar, Adikesavan Selvi, Palanisamy Srinivasan, Muthusamy Govarthanan
Summary: This study integrated EK and BEK technologies for diesel hydrocarbon bioremediation using Staphylococcus epidermidis EVR4. The results showed that this bacterial strain could efficiently degrade diesel in a short period of time, demonstrating great potential for application.
Article
Environmental Sciences
Roger C. Prince, Victoria L. Prince
Summary: The Great Salt Lake contains two high salinity arms, where biodegradation of petroleum hydrocarbons is extensive but slower than in fresh- and sea-water. Less volatile hydrocarbons in weathered crude oil are degraded less extensively and slowly compared to sea or fresh-water. The diversity of substrates subject to degradation suggests that biodegradation is the ultimate fate of petroleum hydrocarbons entering the lake. However, the biodegradation rate is slower in this environment, and increasing it may be possible through nutrient supplementation with organic nitrogen.
Article
Agricultural Engineering
Sandeep Das, Nandita Das, Kamlesh Choure, Piyush Pandey
Summary: Bacteria isolated from crude oil contaminated soil were tested for their hydrocarbon degradation efficiency and biosurfactant production. Two Bacillus spp. showed high potential for asphaltene degradation. B. thuringeinsis SSL1 is recommended for effective breakdown of asphaltene, aiding in crude oil cleanup.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Mahsa Ghafouri, Fatemeh Pourjafar, Zahra Ghobadi Nejad, Soheila Yaghmaei
Summary: In this study, a novel strain of Enterobacter cloacae was isolated and identified that can grow in high TCS concentrations. Naphthalene dioxygenase was introduced as an effective enzyme in TCS biodegradation, and its role during the removal process was investigated. The optimized conditions for maximum TCS removal were found to be a pH value of 7 and a temperature of 32 degrees C after 9 days and 12 h of treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Geochemistry & Geophysics
Sandra Siljestrom, Herbert Volk, Simon C. George
Summary: The fluorescence color and molecular signature of oil inclusions can provide important information on the thermal maturity and fluid migration history. This study used fluorescence microscopy and molecular mass spectrometric analyses to investigate the chemical compositions of oil inclusions. The results show that yellow fluorescing oil inclusions contain more diverse hydrocarbons compared to the white-blue fluorescing oil inclusions. Depth profiles indicate that the white-blue fluorescing oil inclusions have a higher content of volatile components. Chemical ratio analysis suggests that the thermal maturity of the two types of fluorescing oil inclusions is not significantly different.
ORGANIC GEOCHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Gabriela Fiori da Silva, Anupam Gautam, Iolanda Cristina Silveira Duarte, Tiago Palladino Delforno, Valeria Maia de Oliveira, Daniel H. Huson
Summary: This study reveals the genetic potential of microbial communities in fruit waste for biosynthesis of biosurfactants, suggesting their potential applications in various industries such as agriculture, chemistry, food, and pharmaceuticals.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
V. B. Centurion, J. B. Silva, A. W. F. Duarte, L. H. Rosa, V. M. Oliveira
Summary: Despite human contamination in Whalers Bay soil, the volcanic soil heavy metal concentration of Deception Island has little biological influence on resistome genes. Whalers Bay has a higher diversity of antibiotic, biocide, and heavy metal resistance classes in its microbiomes compared to other areas.
ENVIRONMENTAL POLLUTION
(2022)
Article
Microbiology
Averlane Vieira da Silva, Mayanne Karla da Silva, Adeildo Junior de Oliveira, Jose Vieira Silva, Sivaldo Soares Paulino, Aline Cavalcanti de Queiroz, Jakson Leite, Paulo Henrique Barcellos Franca, Jair Putzke, Rosalinda Montone, Valeria Maia de Oliveira, Viviane Piccin dos Santos, Luiz Henrique Rosa, Alysson Wagner Fernandes Duarte
Summary: This study aimed to evaluate the ability of yeasts from Antarctica lichens to solubilize phosphate in vitro. Among the 147 yeasts tested, 43 showed phosphate solubilization activity, with Vishniacozyma being the most prevalent positive genus. Two strains with better activity were selected for further analysis, and the release of tartaric and acetic acids during phosphate solubilization was detected.
ARCHIVES OF MICROBIOLOGY
(2022)
Article
Chemistry, Physical
Camila Aparecida de Menezes, Priscilla de Souza Almeida, Tiago Palladino Delforno, Valeria Maia de Oliveira, Isabel Kimiko Sakamoto, Maria Bernadete Amancio Varesche, Edson Luiz Silva
Summary: This study investigated the effect of increasing the organic loading rate (OLR) on the co-fermentation of glycerol and sugarcane vinasse in a thermophilic anaerobic fluidized bed reactor. The highest hydrogen production rate and yield were observed at an OLR of 120 kg COD m-3 d-1, with butanoate as the major liquid metabolite. The synthesis of butanoate was attributed to the reverse b-oxidation of lactate and the synergistic interaction between Clostridium and Lacti-caseibacillus in the reactor.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Microbiology
V. B. Centurion, S. Campanaro, A. Basile, L. Treu, V. M. Oliveira
Summary: Antarctica is characterized by extreme environmental conditions, where microbial communities form biofilms to survive and thrive. This study used genome-centric metagenomics to describe a complex biofilm microbiome represented by 180 metagenome-assembled genomes. Metabolic flux balance analysis revealed purple bacteria may play a crucial role in supporting heterotrophic species in biofilms.
MICROBIOLOGICAL RESEARCH
(2022)
Article
Multidisciplinary Sciences
Maialet Barret, Laure Gandois, Frederic Thalasso, Karla Martinez Cruz, Armando Sepulveda Jauregui, Celine Lavergne, Roman Teisserenc, Polette Aguilar, Oscar Gerardo Nieto, Claudia Etchebehere, Bruna Martins Dellagnezze, Patricia Bovio Winkler, Gilberto J. Fochesatto, Nikita Tananaev, Mette M. Svenning, Christophe Seppey, Alexander Tveit, Rolando Chamy, Maria Soledad Astorga Espana, Andres Mansilla, Anton Van de Putte, Maxime Sweetlove, Alison E. Murray, Lea Cabrol
Summary: This study provides comprehensive microbial and biogeochemical data from high-latitude regions, offering insights into the complex dynamics of methane cycling and its relationship with climate change. The dataset serves as a valuable resource for future research on high-latitude ecosystems and their response to climate warming.
Article
Soil Science
Gileno Lacerda-Junior, Renan A. A. Pastore, Tiago P. Delforno, Victor B. Centurion, Melline F. Noronha, Joao P. Ventura, Adilson Sartoratto, Itamar S. Melo, Valeria M. Oliveira
Summary: The Caatinga, a Brazilian dry tropical forest, contains diverse lignocellulose-degrading microbes that can be used in the chemical and biofuel industry. This study investigated the microbial dynamics of lignin decomposition in soil microcosms amended with kraft lignin (KL). The results showed rapid and complete biodegradation of lignin-derived compounds by microbial ligninolytic systems, and revealed changes in species richness and diversity in response to KL addition. The research also suggested the potential roles of specific bacterial and fungal species in lignin degradation and the exploration of novel enzymes and microbial candidates for biotechnological applications.
APPLIED SOIL ECOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Sara R. D. Gamelas, Isabel N. N. Sierra-Garcia, Augusto C. C. Tome, Angela Cunha, Leandro M. O. Lourenco
Summary: Antimicrobial photodynamic therapy (aPDT) is an innovative therapeutic approach that can effectively inactivate microbial forms without harming host tissues or causing resistance. This study evaluates the antifungal/sporicidal activity of tetra- and octasubstituted phthalocyanine dyes with ammonium groups. Both photosensitizers tested showed high efficiency in inactivating conidia, with the tetrasubstituted dye being the most effective. These phthalocyanines have the potential to be potent antifungal drugs due to their low concentrations and moderate energy doses required for inactivation.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biodiversity Conservation
B. M. Dellagnezze, P. Bovio-Winkler, C. Lavergne, D. A. Menoni, F. Mosquillo, L. Cabrol, M. Barret, C. Etchebehere
Summary: The activity of methanogenic archaea is expected to be affected by warmer temperatures, leading to increased greenhouse gas emissions in the Arctic. A study was conducted to investigate microbial adaptation and tolerance to higher temperatures and acetate concentrations. The results showed that acetate amendment significantly changed the archaeal diversity, favoring methanogens from Methanosarcinales. Temperature did not have a significant influence on methanogens' diversity, indicating their adaptability to warmer conditions. The study also revealed faster microbial response to CH4 production rates at warmer temperatures, providing insights for potential biotechnological applications.
Article
Environmental Sciences
Camila Aparecida de Menezes, Priscilla de Souza Almeida, Franciele Pereira Camargo, Tiago Palladino Delforno, Valeria Maia de Oliveira, Isabel Kimiko Sakamoto, Maria Bernadete Amancio Varesche, Edson Luiz Silva
Summary: The study assessed the co-digestion of sugarcane vinasse and glycerol in a thermophilic anaerobic fluidized bed reactor. Increasing the organic loading rate had a positive effect on methane production, reaching the highest rate at 20 kg COD m-3 d-1. The presence of sulfate did not impact methane yield due to glycerol addition, and certain bacteria and archaea were identified in the process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Polymer Science
Lusiane Malafatti-Picca, Elaine Cristina Bucioli, Michel Ricardo de Barros Chaves, Aline Machado de Castro, Erika Valoni, Valeria Maia de Oliveira, Anita Jocelyne Marsaioli, Jose Silvio Govone, Dejanira de Franceschi de Angelis, Michel Brienzo, Derlene Attili-Angelis
Summary: Approximately 400 billion PET bottles are produced annually in the world, with 8 to 9 million tons discarded in oceans. PET recycling using microbial hydrolysis shows promise for treating harmful polymeric waste. The study identified four fungal strains suitable for converting PET nanoparticles into terephthalic acid, and confirmed biodegradation through various analyses.
Article
Microbiology
Layssa de Melo Carlos, Karine Fernandes Camacho, Alysson Wagner Duarte, Valeria M. de Oliveira, Marcela Boroski, Luiz Henrique Rosa, Rosemary Vieira, Arthur A. Neto, Julia Ronzella Ottoni, Michel R. Z. Passarini
Summary: Microorganisms in the cold Antarctic environment have the potential to produce ligninolytic enzymes that can be used in bioremediation. This study characterized bacteria and fungi from marine sediment samples from King George and Deception Islands in Antarctica, which may be affected by hydrocarbon pollution and able to produce enzymes for bioremediation processes. Certain isolates showed tolerance to diesel oil and gasoline, as well as enzymatic activities for dye degradation. Taxonomic characterization identified two isolates (Psychrobacter sp. BAD17 and Cladosporium sp. FAR18) with better biotechnological results, exhibiting pyrene tolerance and laccase enzymatic activity. These findings suggest that bacteria and fungi in sediments under potential hydrocarbon pollution can be used to bioremediate cold environments contaminated with petroleum derivatives and dyes.
BRAZILIAN JOURNAL OF MICROBIOLOGY
(2023)
Review
Biodiversity Conservation
Derlene Attili-Angelis, Marta Hiromi Taniwaki, Neusely da Silva, Valeria Maia Oliveira, Nelson Lima
Summary: This article introduces the work of Brazil in the infrastructure for biodiversity conservation over the past 60 years, emphasizing the importance of microbial collections and their potential in promoting the bioeconomy and addressing environmental issues.
Article
Microbiology
Jessica B. Silva, Victor B. Centurion, Alysson W. F. Duarte, Rodrigo M. Galazzi, Marco A. Z. Arruda, Adilson Sartoratto, Luiz H. Rosa, Valeria M. Oliveira
Summary: This study investigated the genetic potential of Antarctic soil microorganisms for hydrocarbon degradation, and found that the abundant hydrocarbon-degrading genes in Antarctic sediments were mainly affiliated with Proteobacteria and Actinobacteria. The study also revealed that hydrocarbon input in Antarctic soils may come from both anthropogenic and natural sources.
FEMS MICROBIOLOGY ECOLOGY
(2022)
