Biotransformation of progesterone and norgestrel by two freshwater microalgae (Scenedesmus obliquus and Chlorella pyrenoidosa): Transformation kinetics and products identification

Chemosphere ◽  
2014 ◽  
Vol 95 ◽  
pp. 581-588 ◽  
Author(s):  
Fu-Qiang Peng ◽  
Guang-Guo Ying ◽  
Bin Yang ◽  
Shan Liu ◽  
Hua-Jie Lai ◽  
...  
Keyword(s):  
Scenedesmus Obliquus ◽  
Chlorella Pyrenoidosa ◽  
Transformation Kinetics ◽  
Freshwater Microalgae

Humic acid alleviates the ecotoxicity of graphene-family materials on the freshwater microalgae Scenedesmus obliquus

Chemosphere ◽  
2018 ◽  
Vol 197 ◽  
pp. 749-758 ◽  
Author(s):  
Ying Zhang ◽  
Tiantian Meng ◽  
Xi Guo ◽  
Ruixin Yang ◽  
Xiaohui Si ◽  
...  
Keyword(s):  
Humic Acid ◽  
Scenedesmus Obliquus ◽  
Freshwater Microalgae ◽  
Graphene Family Materials

Eco-toxicological effect of Carbamazepine on Scenedesmus obliquus and Chlorella pyrenoidosa

2012 ◽  
Vol 33 (2) ◽  
pp. 344-352 ◽  
Author(s):  
Wei Zhang ◽  
Meng Zhang ◽  
Kuangfei Lin ◽  
Wenfang Sun ◽  
Bang Xiong ◽  
...  
Keyword(s):  
Scenedesmus Obliquus ◽  
Chlorella Pyrenoidosa ◽  
Toxicological Effect

scholarly journals Dissolved Organic Matter Modulates Algal Oxidative Stress and Membrane System Responses to Binary Mixtures of Nano-Metal-Oxides (nCeO2, nMgO and nFe3O4) and Sulfadiazine

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 712 ◽  
Author(s):  
Fan Zhang ◽  
Nan Ye ◽  
Se Wang ◽  
Yue Meng ◽  
Hao Fang ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Metal Oxides ◽  
Emerging Contaminants ◽  
Scenedesmus Obliquus ◽  
Algal Species ◽  
Cell Membrane Permeability ◽  
Freshwater Microalgae ◽  
Membrane Function

Joint biomarker responses, oxidative stress and membrane systems, were determined for nano-metal-oxides (nMeO, i.e., nCeO2, nMgO, and nFe3O4) and sulfadiazine (SDZ) exposed at relevant low concentrations to two freshwater microalgae Scenedesmus obliquus and Chlorella pyrenoidosa. The impacts of dissolved organic matter (DOM) on the joint biomarker responses were also investigated. Results indicated that the presence of SDZ significantly decreased the level of intercellular reactive oxygen species (ROS) in the algal cells exposed to each nMeO. Reduction of cell membrane permeability (CMP) and mitochondrial membrane potential (MMP) in the algal cells was observed when the algae were exposed to the mixture of SDZ and the nMeO. The degree of reduction of the ROS level, CMP, and MMP significantly went down with the addition of DOM to a certain extent. Changes in cellular oxidative stress and membrane function depended on the types of both nMeO and algal species. This contribution provides an insight into the hazard assessment of a mixture consisting of emerging contaminants and DOM, as they can coexist in the aquatic environment.

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