Results 161 to 170 of about 3,700 (202)

Pyrene metabolites by bacterium enhancing cell division of green alga Selenastrum capricornutum

Science of the Total Environment, 2019
Collaborations between multiple microbial species are important for understanding natural clearance and ecological effects of toxic organic contaminants in the environment. However, the interactions between different species in the transformation and degradation of contaminants remain to address.
Tian-Gang Luan, Baowei Chen
exaly   +3 more sources

Monitoring dihydrodiol polyaromatic hydrocarbon metabolites produced by the freshwater microalgae Selenastrum capricornutum

Chemosphere, 2016
We found that microalgae exposed to a mixture of polycyclic aromatic hydrocarbons (PAHs) did not show growth inhibition. Thus, we assumed that they could metabolize these compounds. In this study, the dihydrodiol-type PAH metabolites of benzo(a)pyrene (BaP), benzo(a)anthracene (BaA), benzo(b)fluoranthene (BbF) and benzo(k)fluoranthene (BkF) produced by
Martha Patricia García de Llasera
exaly   +3 more sources

Sorption of organics by Selenastrum capricornutum

Water Research, 1983
Abstract The sorption of eight organic compounds by a representative green alga, Selenastrum capricornutum , was determined by gas-liquid chromatography using a series of linear model experiments. The log 10 bioconcentration factors (BCF), defined as the ratio of the concentration on in the algae to the concentration in the aqueous medium, are as ...
Dennis M. Casserly, Ernst M. Davis, Thomas D. Downs, Rufus K. Guthrie   +3 more
openaire   +1 more source

ADAPTATION OF SELENASTRUM CAPRICORNUTUM (CHLOROPHYCEAE) TO COPPER

Environmental Toxicology and Chemistry, 1986
Abstract Selenastrum capricornutum Printz, growing in a chemically defined medium, was used as a model for studying adaptation of algae to a toxic metal (copper) ion. Cells exhibited lag-phase adaptation to 0.8 μM total Cu (10−12 M free ion concentration) after 20 generations of Cu exposure.
J.S. Kuwabara, H.V. Leland
openaire   +1 more source

Bioactivity of Phenanthrenes from Juncus acutus on Selenastrum capricornutum

Journal of Chemical Ecology, 2004
Twenty-five 9,10-dihydrophenanthrenes, four phenanthrenes, a dihydrodibenzoxepin, and a pyrene, isolated from the wetland plant Juncus acutus, were tested to detect their effects on the green alga Selenastrum capricornutum. Nine of the compounds were isolated and identified for the first time.
Della Greca M, ISIDORI, Marina, LAVORGNA, Margherita, MONACO, Pietro, Previtera L, Zarrelli A.   +5 more
openaire   +4 more sources

PROMUTAGEN ACTIVATION BY THE GREEN ALGA SELENASTRUM CAPRICORNUTUM

Environmental Toxicology and Chemistry, 1998
AbstractThe capability of Selenastrum capricornutum to activate o-phenylenediamine (OPD) and 2-aminofluorene (2-AF) was tested in a modified Ames assay in which the activation component (S9) was replaced by the algal cells. Normal-grown algae did not activate OPD but these cells activated 2-AF by sixfold. Copper induces a peroxidase in S. capricornutum.
Kathleen R Sauser, King-Thom Chung, Tit-Yee Wong   +2 more
openaire   +1 more source

Effects of environmental factors and metals on selenastrum capricornutum lipids

Phytochemistry, 1998
Abstract Studies of the effects of illumination, temperature and heavy metal exposure (Cu 2 , Zn 2 , Cd 2 ) on Selenastrum capricornutum have shown that these factors alter both the total fatty acid and free sterol composition of cells in batch culture.
Christian J McLarnon-Riches, Carole E Rolph, David L.A Greenway, Peter K Robinson   +3 more
openaire   +1 more source

Biotransformation of Finasteride (MK‐0906) bySelenastrum capricornutum(Green Algae)

Annals of the New York Academy of Sciences, 1994
Finasteride (MK-0906), a drug used for the treatment of benign prostatic hyperplasia, is a highly specific inhibitor of steroid 5 alpha-reductase, an enzyme that converts testosterone (T) to dihydrotestosterone (DHT) in animals and humans. In a study to evaluate the effect of finasteride on the growth of green alga, Selenastrum capricornutum, the ...
E S, Venkataramani, J R, Carlin, U, Dolling, P, Christofalo, R J, Magliette, B H, Arison, R A, Stearns   +6 more
openaire   +2 more sources

Removal and biodegradation of polycyclic aromatic hydrocarbons by Selenastrum capricornutum

Environmental Toxicology and Chemistry, 2006
Abstract The removal and degradation of a mixture of polycyclic aromatic hydrocarbons (PAH), namely phenanthrene (PHE), fluoranthene (FLA), and pyrene (PYR), by a green microalgal species, Selenastrum capricornutum, at different initial cell densities were studied.
Sidney Man Ngai, Chan, Tiangang, Luan, Ming Hung, Wong, Nora Fung Yee, Tam   +3 more
openaire   +2 more sources

Round Robin testing with the Selenastrum capricornutum microplate toxicity assay

Hydrobiologia, 1989
Three Quebec-based ecotoxicological laboratories participated in an intercalibration exercise to assess the performance of a recently-published cost-efficient algal microplate toxicity assay. Three test series were carried out with six operators (2 from each laboratory) and two reference toxicants (Cd2+ as CdCl2 and phenol).
C. Thellen, C. Blaise, Y. Roy, C. Hickey
openaire   +1 more source