Journal
COLLOIDS AND SURFACES B-BIOINTERFACES
Volume 125, Issue -, Pages 284-290Publisher
ELSEVIER
DOI: 10.1016/j.colsurfb.2014.11.008
Keywords
Iron oxide nanoparticles; Cadmium sulfide nanoparticles; Silver sulfide nanoparticles; Nanocomposite; Toxicity; Mougeotia sp.
Funding
- Science and Engineering Research Board, Department of Science and Technology, Government of India [SB/FT/LS-281/2012]
- SASTRA University (TR Rajagopalan grant)
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Nanopartides (NPs) are being used in many industries ranging from medical, textile, automobile, consumer products, etc. This may increase the probability of their (NPs) release into the environment and fresh water ecosystems. The present study focuses on testing the potential effect of iron oxide, nanocomposite of cadmium sulfide and silver sulfide, cadmium sulfide and silver sulfide nanoparticles (NPs) on a fresh water alga Mougeotia sp. as the model organism. The alga was treated with different concentrations of NPs (0.1-25 mg/L). The NPs exposure caused lipid peroxidation and ROS production, and suppressed the antioxidant defense system such as catalase, glutathione reductase, and superoxide dismutase. Adsorption of NPs on algal surface and membrane damage were confirmed through microscopic evaluation and increase in protein content in extracellular medium. The present investigation pointed out the ecological implications of NPs. The study warrants the need for regulatory agencies to monitor and regulate the use of NPs. (C) 2014 Elsevier B.V. All rights reserved.
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