Results 41 to 50 of about 5,667 (264)

Local-scale impacts of water hyacinth on water quality in a hypereutrophic lake

Frontiers in Water, 2023
Increased nutrient concentrations have been linked to water quality impairments across the world. In Lake Victoria, the second largest freshwater lake in the world, decades of eutrophication have challenged water quality management and led to conditions ...
Jessica R. Corman, Amber Roegner, Amber Roegner, Zachary Ogari, Todd R. Miller, Christopher M. Aura   +5 more
doaj   +1 more source

Genome analysis of Pseudomonas sp. OF001 and Rubrivivax sp. A210 suggests multicopper oxidases catalyze manganese oxidation required for cylindrospermopsin transformation

BMC Genomics, 2021
Background Cylindrospermopsin is a highly persistent cyanobacterial secondary metabolite toxic to humans and other living organisms. Strain OF001 and A210 are manganese-oxidizing bacteria (MOB) able to transform cylindrospermopsin during the oxidation of
Erika Berenice Martínez-Ruiz, Myriel Cooper, Jimena Barrero-Canosa, Mindia A. S. Haryono, Irina Bessarab, Rohan B. H. Williams, Ulrich Szewzyk   +6 more
doaj   +1 more source

Environmental Exposure to Cyanobacteria Hepatotoxins in a Pacific Island Community: A Cross-Sectional Assessment

Microorganisms, 2022
(1) Background: Cyanobacteria produce a wide range of secondary metabolites, including tumor-promoting hepatotoxins. We recently reported evidence of an independent association between oral cyanobacteria and hepatocellular carcinoma in a U.S. population.
Brenda Y. Hernandez, Jason Biggs, Xuemei Zhu, Patrick Sotto, Michelle Nagata, Ana Joy Pacilan Mendez, Yvette Paulino   +6 more
doaj   +1 more source

Constructed wetland mesocosms improve the biodegradation of microcystin-LR and cylindrospermopsin by indigenous bacterial consortia.

Harmful Algae, 2023
Cyanobacterial blooms releasing harmful cyanotoxins, such as microcystin (MC) and cylindrospermopsin (CYN), are prominent threats to human and animal health.
Lasse Ahrenkiel Thyssen, Alba Martinez i Quer, C. Arias, Lea Ellegaard-Jensen, Pedro N. Carvalho, Anders Johansen   +5 more
semanticscholar   +1 more source

Detoxification of Cylindrospermopsin by Pyrite in Water [PDF]

Catalysts, 2019
Cylindrospermopsin (CYN) is a cyanobacterial toxin released from eutrophic water. It persistently remains in the environment because its degradation under solar light is extremely low. In this study, pyrite, an abundant mineral, was investigated as a catalyst for decomposing and detoxifying CYN in water. A detailed examination of intermediates provided
Shulian Wang, Yongmei Chen, Yiying Jiao, Zhu Li   +3 more
openaire   +2 more sources

Alternative Isolation Protocol for Desulfo and Zwitterionic Cylindrospermopsin Alkaloids and Comparison of Their Toxicity in HepG2 Cells

Molecules, 2020
The term cylindrospermopsins (CYNs) refers to a structurally related class of cyanobacterial metabolites comprised of a tricyclic guanidine group and a hydroxymethyluracil moiety. Most reports in environmental aquatic samples refer to cylindrospermopsin (
Carlos González-Blanco, Felipe Augusto Dörr, Renata Albuquerque, Janice Onuki, Ernani Pinto   +4 more
doaj   +1 more source

Novel virulent and temperate cyanophages predicted to infect Microcoleus associated with anatoxin‐producing benthic mats

Environmental Microbiology, Volume 25, Issue 12, Page 3319-3332, December 2023., 2023
We explore the previously undescribed diversity of phages associated with anatoxin‐producing benthic mats from rivers, including a novel virulent cyanophage with a ‘jumbo’ genome. This virulent cyanophage is predicted to infect anatoxin‐producing Microcoleus and its appearance is concomitant with the host decline, supporting the kill‐the‐winner ...
Cecilio Valadez‐Cano, Adrian Reyes‐Prieto, Janice Lawrence   +2 more
wiley   +1 more source

Process characterization and pretreatment of container and drum cleaning industry wastewater using a heat‐activated persulfate oxidation process

CLEAN – Soil, Air, Water, Volume 51, Issue 7, July 2023., 2023
The aim of the study was to find a more effective method for treating wastewater generated from washing and cutting industrial containers such as intermediate bulk containers, steel drums, and plastic barrels. The researchers employed a sulfate radical‐based oxidation method and could show that it significantly enhanced the quality of the wastewater by
Elçin Güneş, Deniz İzlen Çifçi, Suna Özden Çelik   +2 more
wiley   +1 more source

Safety of an ethanolic extract of the dried biomass of the microalga Phaeodactylum tricornutum as a novel food pursuant to Regulation (EU) 2015/2283

EFSA Journal, Volume 21, Issue 7, July 2023., 2023
Abstract Following a request from the European Commission, the EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) was asked to deliver an opinion on an ethanolic extract of the dried biomass of the microalga Phaeodactylum tricornutum as a novel food (NF) pursuant to Regulation (EU) 2015/2283.
EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA), Dominique Turck, Torsten Bohn, Jacqueline Castenmiller, Stefaan De Henauw, Karen Ildico Hirsch‐Ernst, Alexandre Maciuk, Inge Mangelsdorf, Harry J McArdle, Androniki Naska, Carmen Pelaez, Kristina Pentieva, Alfonso Siani, Frank Thies, Sophia Tsabouri, Marco Vinceti, Margarita Aguilera‐Gómez, Francesco Cubadda, Thomas Frenzel, Marina Heinonen, Rosangela Marchelli, Monika Neuhäuser‐Berthold, Morten Poulsen, Miguel Prieto Maradona, Alexandros Siskos, Josef Rudolf Schlatter, Henk van Loveren, Alejandra Muñoz González, Annamaria Rossi, Ermolaos Ververis, Helle Katrine Knutsen   +31 more
wiley   +1 more source

Towards a more complete understanding of the occurrence and toxicities of the cylindrospermopsins

AIMS Environmental Science, 2015
The existence of a number of cylindrospermopsin analogs has been confirmed by several authors. These cylindrospermopsin analogs were formerly seen as minor constituents, with normal cylindrospermopsin always being the dominant form.
Ross Sadler
doaj   +1 more source