Article
Chemistry, Multidisciplinary
Assunta Saide, Gennaro Riccio, Adrianna Ianora, Chiara Lauritano
Summary: The combination of Pheophorbide a and Cylindrotheca closterium displayed significant anti-proliferative activity against melanoma cells under light exposure, suggesting its potential application in photodynamic therapy.
APPLIED SCIENCES-BASEL
(2023)
Article
Construction & Building Technology
Marine Georges, Amel Bourguiba, Mohamed Boutouil, Daniel Chateigner, Orianne Jolly, Pascal Claquin
Summary: This study evaluated the ability of the benthic diatom C. closterium to use mortar from artificial marine structures as a source of silicon for their metabolism and growth. The study found that the diatoms were able to utilize dissolved silica from the mortar to synthesize their cell wall and adapt to limited silicon conditions.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Franziska Klapper, Sien Audoor, Wim Vyverman, Georg Pohnert
Summary: This study revealed the pheromone-guided mating process in the coastal raphid diatom Cylindrotheca closterium. The research demonstrates that this diatom has a complex pheromone system with attractant, inhibitory, and inductive functions, similar to other pennate diatoms. Particularly, the mt(+) cells appear not to produce pheromones, distinguishing C. closterium from other diatoms in terms of pheromone system complexity.
JOURNAL OF CHEMICAL ECOLOGY
(2021)
Article
Environmental Sciences
Tea Misic Radic, Petra Vukosav, Bruno Komazec, Cecile Formosa-Dague, Darija Domazet Jurasin, Petra Peharec Stefanic, Andrea Cackovic, Krunoslav Juraic, Nadica Ivosevic DeNardis
Summary: This study found that polystyrene nanoparticles had negative impacts on the growth and antioxidant responses of marine diatoms, leading to decreased cell wall rigidity, excessive production of reactive oxygen species, and increased oxidative damage to lipids. The detoxifying effect of EPS and the cell abundance per NP concentration may influence the inhibitory effects of NPs on growth.
Article
Environmental Sciences
Irem Demir-Yilmaz, Nives Novosel, Maja Levak Zorinc, Tea Misic Radic, Malak Souad Ftouhi, Pascal Guiraud, Nadica Ivosevic DeNardis, Cecile Formosa-Dague
Summary: Aggregation of marine diatom Cylindrotheca closterium during the exponential growth phase is affected by salinity, with the highest aggregation observed at a salinity of 35. A biophysical study using atomic force microscopy and electrochemical methods revealed that diatoms become stiffer and more hydrophilic at a salinity of 5, producing larger amounts of extracellular polymeric substances that form a network and contribute to diatom aggregation. This study provides important evidence for understanding nanoscale diatom interactions and large-scale aggregation phenomena in aquatic systems.
MARINE ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Petra Vukosav, Lea Pasalic, Danijela Bakaric, Darija Domazet Jurasin, Tea Misic Radic
Summary: The interaction between engineered silica nanoparticles (SiO2 NPs) and microalgal extracellular polymers (EPS) released by marine diatom Cylindrotheca closterium was investigated in this study. The results showed that the presence of EPS altered the aggregation affinity of SiO2 NPs in the marine environment, which could potentially prolong the presence of NPs in the water column and pose a threat to marine biota, especially during microalgal blooms.
Article
Biotechnology & Applied Microbiology
Konstantin Frick, Tobias Ebbing, Yen-Cheng Yeh, Ulrike Schmid-Staiger, Guenter E. M. Tovar
Summary: This study compared the beta-glucan production during nitrogen depletion in three different microalgae species and determined the most promising species. The results showed that Phaeodactylum tricornutum had the highest yield, but Monodopsis subterranea had a higher volumetric yield. Additionally, Phaeodactylum tricornutum produced co-products such as coenzyme Q10 and fucoxanthin, while Monodopsis subterranea had a higher EPA content. Overall, both Phaeodactylum tricornutum and Monodopsis subterranea are suitable for beta-glucan production in flat panel airlift reactors.
JOURNAL OF APPLIED PHYCOLOGY
(2023)
Article
Plant Sciences
Tea Misic Radic, Andrea Cackovic, Abra Penezic, Jelena Dautovic, Jovica Loncar, Dario Omanovic, Krunoslav Juraic, Zrinka Ljubesic
Summary: The study investigated the impact of cadmium on the marine diatom Cylindrotheca closterium in terms of growth dynamics, organic matter production, and morphological characteristics. It was found that exposure to high concentrations of cadmium led to a significant increase in both dissolved and particulate organic carbon in C. closterium cultures. Additionally, changes in the cell surface morphology were observed at the nanoscale level, indicating possible interference of cadmium with diatom biosilification.
EUROPEAN JOURNAL OF PHYCOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
R. G. Gevorgiz, M. A. Gureev, S. N. Zheleznova, E. Gureeva, M. Nechoroshev
Summary: The production of diadinoxanthin and its cytostatic activity in C. closterium was studied. Diadinoxanthin demonstrates lower activity compared to fucoxanthin, with an IC50 value achieved at a concentration of more than 100 μM, while fucoxanthin exhibits a cytostatic effect below 18.75 μM. The production of diadinoxanthin in a flow-through culture of C. closterium can exceed the production of fucoxanthin by 14 times.
APPLIED BIOCHEMISTRY AND MICROBIOLOGY
(2022)
Article
Plant Sciences
Olha Mykhailenko, Ivan Bezruk, Liudas Ivanauskas, Victoriya Georgiyants
Summary: Saffron, a valuable crop in Ukraine, was cultivated in 2015 for the first time, allowing for analysis of major metabolites using HPLC. The grinding technique using liquid nitrogen significantly increased the yield of certain compounds. Samples from different regions showed variations in metabolite content, impacting potential applications in pharmaceutical and food industries.
PLANT FOODS FOR HUMAN NUTRITION
(2021)
Article
Geology
Fruzsina Gresina, Beata Farkas, Szabolcs akos Fabian, Zoltan Szalai, Gyorgy Varga
Summary: In this study, automated image analysis was used to investigate mineral particles from different sedimentary environments in the Carpathian Basin. The analysis focused on variables related to grain shape, including circularity, convexity, solidity, and elongation. The study found that circularity, convexity, and solidity parameters can help distinguish geomorphological environments.
SEDIMENTARY GEOLOGY
(2023)
Article
Engineering, Chemical
Hao Lai, Jiushuai Deng, Quanjun Liu, Shuming Wen, Qiang Song
Summary: This study investigated the surface chemistry differences between minerals in lead concentrate and tailings in complex flotation circuits of lead-zinc sulfide ores. The results showed that the adsorption of lead ions onto specific mineral surfaces was an important reason for the failed separation of minerals from galena. The surface chemical evidence provided by this study helps to better understand the selective separation mechanism of lead-zinc sulfide ores.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Thermodynamics
Rupak Kumar, Lokesh Rohilla, Arup Kumar Das
Summary: This paper presents a combined photographic and thermal study of interfacial behavior during boiling of liquid Nitrogen (LN2) over water surface, with observations of film boiling and LN2 drop icing. The Rayleigh-Taylor instability criterion is used to differentiate between bubbling regimes and analyze the N(2) vapor cloud generated over the drop. Sub-surface boiling phenomenon is also reported through experiments on base fluids other than water.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Biochemistry & Molecular Biology
Genmao Guo, Qing Huang, Fangming Jin, Linyi Lin, Qingqing Wang, Qionglin Fu, Yin Liu, Muhammad Sajjad, Junfeng Wang, Zhenni Liao, Miao Cai
Summary: Multivariate statistical analysis was conducted to evaluate the chemical compositions of pyrolysis liquid, and it was found that there were no significant differences in the chemical constituents among different feedstock materials. The pyrolysis temperature had a significant impact on the contents of acids, ketones, and phenolics, and there were correlations between these components.
Article
Chemistry, Physical
Jacek Piechota, Stanislaw Krukowski, Petro Sadovyi, Bohdan Sadovyi, Sylwester Porowski, Izabella Grzegory
Summary: The study investigated the dissolution of molecular nitrogen in liquid gallium and iron through ab initio calculations and experiments, revealing fundamental differences in N bonding between the two solvents. It was found that the nitrogen solubility in iron is much higher than in gallium, indicating that liquid iron may be a prospective solvent for gallium nitride crystallization from metallic solutions.
Article
Environmental Sciences
Freylan Mena, Adarli Romero, Julian Blasco, Cristiano V. M. Araujo
Summary: As aquatic environments associated with conventional agriculture are exposed to various pesticides, it is important to identify any possible interactions that modify their effects when in a mixture. This study found that the presence of glyphosate attenuated the avoidance response of fish to chlorpyrifos and chlorothalonil, indicating that the ecological risk of exposure may be temporarily masked.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Environmental Sciences
Cristiano V. M. Araujo, Marta Sendra, Joao Rodolfo S. Pontes, Chiara Trombini, Julian Blasco
Summary: Environmental contamination reduces the quality of ecosystems and causes stress on organisms. Organisms can avoid continuous exposure to contaminants by moving to less disturbed areas. However, sporadic contact with contamination should not be ignored, as it increases stress. This study aimed to assess the stress levels of zebrafish under different contamination scenarios. The results showed that uncontaminated areas played a crucial role in alleviating stress for zebrafish in a chemically heterogeneous landscape.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
David Salvatierra, Angela Rodriguez-Ruiz, Andrea Cordero, Julio Lopez-Doval, Francisco Baldo, Julian Blasco, Cristiano V. M. Araujo
Summary: The study suggests that contamination can significantly alter the habitat selection behavior of estuarine shrimp, particularly in the presence of predators and food availability, leading to shifts in preferences even in contaminated environments. This altered behavior may result in increased exposure to contamination due to the presence of predation risk.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Helmut Stremmel, Linda Weiss, Gema Parra, Eloisa Ramos-Rodriguez, Cristiano V. M. Araujo
Summary: This study investigated the effects of fluoxetine on Daphnia magna, finding that it may have harmful effects on survival, behavior, and reproduction. It was revealed that fluoxetine did not have multigenerational effects on reproduction and behavior at environmentally relevant concentrations, but showed lethal effects at higher concentrations. Additionally, fluoxetine concentrations were found to promote the reproduction of D. magna. This study highlights the potential hazards for aquatic biota due to the increasing use of fluoxetine.
Article
Environmental Sciences
M. Andrea Orihuela-Garcia, Marina Bolado-Penagos, Iria Sala, Antonio Tovar-Sanchez, Carlos M. Garcia, Miguel Bruno, Fidel Echevarria, Irene Laiz
Summary: The study investigates the distribution of trace metals in the surface waters as they flow from the Gulf of Cadiz to the Alboran Sea through the Strait of Gibraltar. These regions are ecologically significant. The concentrations of trace metals were measured during two oceanographic cruises, along with the factors affecting their distribution such as wind and surface currents. The study found that rivers are the main source of trace metals, and the surface circulation pattern, influenced by wind variability, creates an offshore-eastward gradient.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Fisheries
Carlos Torres-Bayona, Jorge Leyva Rojas, Ronield Fernandez, Martha Prieto-Guevara, Alexander Pulido, Ignacio Moreno-Garrido
Summary: This study evaluated the antimicrobial effect of 25 microalgae extracts on the bacterial strain Vibrio anguillarum. Thirteen extracts exhibited antibacterial activity, with the highest activity found in Monochrysis lutheri.
TURKISH JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2023)
Article
Environmental Sciences
Raquel A. Moreira, Curro Polo-Castellano, Andrea Cordero-de-Castro, Mariana A. Dias, Thandy J. S. Pinto, Cassiana C. Montagner, Evaldo L. G. Espindola, Julian Blasco, Cristiano V. M. Araujo
Summary: The high contamination levels caused by pesticides make aquatic ecosystems vulnerable. Mobile organisms can avoid continuous exposure to contaminants by moving to less disturbed habitats. This study used a system called HeMHAS to evaluate the ability of Daphnia magna to detect and avoid habitats contaminated by specific pesticides. The colonization of habitats and chronic toxicity were also assessed for different parameters. The results showed that D. magna did not prefer less contaminated areas and did not move to highly contaminated zones. Additionally, exposure to a mixture of pesticides significantly prevented colonization, and negative consequences on survival, fecundity, and body length were observed with chronic exposure to a specific pesticide. The study suggests that the risk of local population extinction may be underestimated if only forced exposure endpoints are examined.
Article
Environmental Sciences
Sergei Redondo-Lopez, Enrique Gonzalez-Ortegon, Freylan Mena, Cristiano V. M. Araujo
Summary: Behavioral changes in two shrimp species, P. vannamei and P. varians, exposed to copper were studied. The locomotion of the shrimps showed opposite trends, with P. varians reducing movements above 50 mu g/L and P. vannamei exhibiting hyperactivity. Both species significantly avoided the highest concentrations of copper in a non-forced exposure scenario, but the repellence of copper was stronger for P. vannamei.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Marta Sendra, Ignacio Moreno-Garrido, Julian Blasco
Summary: BPA has been added to ECHA's Candidate List of substances of very high concern, posing hazards to human and environmental health. The authorities encourage the use of BPA analogues as replacements, but their impact on the environment is not well known. In this study, five BPA analogues were chosen to investigate their effects on marine primary producers.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Javier Moreno-Andres, Leonardo Romero-Martinez, Sergio Seoane, Asuncion Acevedo-Merino, Ignacio Moreno-Garrido, Enrique Nebot
Summary: Harmful algal blooms (HABs) in coastal areas impact ecosystems and human health. This study evaluates the effectiveness of different emerging biocides for disinfecting ballast water and compares them with conventional chlorination methods. The results suggest that using H2O2, peracetic acid (PAA), or peroxymonosulfate (PMS) can be a feasible alternative to chlorine-based reagents for inhibiting the growth of harmful phytoplankton.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Marine & Freshwater Biology
Maria Pilar Gonzalez, Andrea Cordero-de-Castro, David Salvatierra, Rajaa Kholssi, Marisa Narciso Fernandes, Julian Blasco, Cristiano V. M. Araujo, Camilo Dias Seabra Pereira
Summary: This study evaluates the adverse effects of settleable particulate matter (SePM) released by metallurgical industries on aquatic ecosystems. The results show that high concentrations of SePM have a negative impact on various physiological indicators of aquatic organisms.
AQUATIC TOXICOLOGY
(2023)
Article
Environmental Sciences
Estefania Bonnail, Sebastian Vera, Julian Blasco, Tomas Angel DelValls
Summary: Textile manufacturing, the second most polluting industry, can be transformed through the use of a new disruptive technology (ASEC) to treat wastewater and obtain purified water and solid byproducts, achieving water recycling, reducing carbon emissions, and minimizing environmental pollution.
