Microalgal ecotoxicity of nanoparticles: An updated review

Nguyen, Minh Kim; Moon, Ju‐Young; Lee, Young-Chul

doi:10.1016/j.ecoenv.2020.110781

Cited by 61 publications

(32 citation statements)

References 250 publications

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“…Moreover, NPs can be accumulated in various organs for longer periods than traditional pharmaceutical agents generating oxidative stress, inflammation, cell death and agglomerates within vessels [ 31 ]. There is a need for the development of new assays consisting of several approaches [ 31 ] including assessment of toxicity of NPs by aquatic organisms [ 32 ], which will take into consideration factors such as size, shape, surface area, surface charge, porosity or hydrophobicity which influence the functions and toxicity of nanomaterials [ 33 , 34 ]. It has been established that NPs are able to activate an immune response and induce phagocytic cells that will eliminate them from the bloodstream or may induce immunostimulation which may promote inflammatory disorders or even immunosuppression which increases the host’s susceptibility to infections and cancer.…”

Section: Glycan-functionalized Nanoparticles (Nps)mentioning

confidence: 99%

Glycan Nanobiosensors

et al. 2020

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This review paper comprehensively summarizes advances made in the design of glycan nanobiosensors using diverse forms of nanomaterials. In particular, the paper covers the application of gold nanoparticles, quantum dots, magnetic nanoparticles, carbon nanoparticles, hybrid types of nanoparticles, proteins as nanoscaffolds and various nanoscale-based approaches to designing such nanoscale probes. The article covers innovative immobilization strategies for the conjugation of glycans on nanoparticles. Summaries of the detection schemes applied, the analytes detected and the key operational characteristics of such nanobiosensors are provided in the form of tables for each particular type of nanomaterial.

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Section: Glycan-functionalized Nanoparticles (Nps)mentioning

confidence: 99%

Glycan Nanobiosensors

et al. 2020

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“…Specifically, the exposure of algae on ZnO NPs enhanced lipid accumulation despite the high concentration of nitrates in the cultures. Many studies [21,22] nowadays have focused on enhancing the lipid accumulation of microalgae by adding NPs, in an effort to reduce the cost of biofuel production. Ren and co-workers [22] investigated the boost of lipid accumulation of Scenedesmus sp.…”

Section: Zno Nps Effects On Algal Nutrients Uptake and Lipid Accumulamentioning

confidence: 99%

“…The lipid content of microalgae is an important factor for the choice of suitable algal species for biofuel production. For this reason, many studies have been focused on NPs' effects on microalgae [8,14,[19][20][21] with the latest studies focusing not on the toxic effects of NPs but in the increased lipid accumulation of microalgae due to NPs' presence [10,22]. The effect of NP toxicity on microalgae in short term and batch mode experiments has been investigated by many researchers.…”

Section: Introductionmentioning

confidence: 99%

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Long-Term Toxicity of ZnO Nanoparticles on Scenedesmus rubescens Cultivated in Semi-Batch Mode

2020

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The scope of this study was to investigate the toxic effects of zinc oxide (ZnO) nanoparticles (NPs) on freshwater microalgae, in long-term semi-batch feeding mode at two different hydraulic retention times (HRTs) (20 and 40 days). A freshwater microalgae, Scenedesmus rubescens, was employed and exposed to a semi-continuous supply of ZnO NPs at a low concentration of 0.081 mg/L for a period of 28 d. Experiments were conducted under controlled environmental conditions. Τhe impact of ZnO NPs on S. rubescens, which was assessed in terms of nutrient removal, biomass growth, and algal lipid content. Semi-batch mode cultures showed that low ZnO NP concentrations at an HRT of 40 d did not have any negative effect on microalgae growth after the fourth day of culture. In contrast, algal growth was inhibited up to 17.5% at an HRT of 20 d in the presence of ZnO NPs. This might be attributed to the higher flow rate applied and ZnO NPs load. A positive correlation between nutrient removal and microalgae growth was observed. The algal lipid content was, in most cases, higher in the presence of ZnO NPs at both HRTs, indicating that even low ZnO NPs concentration cause stress resulting in higher lipid content.

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“…Thus, it is necessary to study their ecotoxicity to nature environment. Marine microalgae are regarded as the signi cant primary producer in the ocean and the important source of marine amino acids (Li et al 2009;Zhang et al 2015), which are the most widely used test organism (Bondarenko 2016;Wang et al 2019;Nguyen et al 2020). Previous studies have reported nano-Cu and nano-CuO toxicity on freshwater algae (Müller et al 2016;Zhao et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Effects of copper ions and copper nanomaterials on the output of amino acids from marine algae

Huang

Zhou

Zhao

et al. 2021

Preprint

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In this study, the effects of different copper’s forms, metal salt (Cu2+), nano-metal (nano-Cu) and nano-metal oxide (nano-CuO), were tested on two marine algae named Skeletonema costatum and Nitzschia closterium. During a 96-hour exposure to nanoparticles (NPs) and salt, cell number, Cu2+ concentration in the culture medium, morphology and intracellular amino acids was measured to assess the toxicity of those copper materials and the toxicity mechanism of NPs. It was found that the toxicity of Cu2+, nano-Cu and nano-CuO on marine phytoplankton decreased in order. The EC50 values of Cu2+ and nano-Cu for S. costatum and N. closterium ranged from 0.356 to 0.991 mg/L and 0.663 to 2.455 mg/L, respectively. Nano-Cu inhibited the growth of marine phytoplankton mainly by releasing Cu2+, however, nano-CuO mainly produced toxic effects on microalgae through the effect of NPs. The secretion of extracellular polymeric substances by microalgae could be another possible reason for nano-Cu and nano-CuO to impose implications for microalgae. S. costatum was more sensitive to copper than N. closterium. Cu2+, nano-Cu and nano-CuO all reduced the total output of algae-derived amino acids by affecting the growth of phytoplankton and per-cell amino acids. This manuscript is of important implications to fill the data gaps for nano-Cu and nano-CuO risk assessment on marine algae.

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Microalgal ecotoxicity of nanoparticles: An updated review

Cited by 61 publications

References 250 publications

Glycan Nanobiosensors

Glycan Nanobiosensors

Long-Term Toxicity of ZnO Nanoparticles on Scenedesmus rubescens Cultivated in Semi-Batch Mode

Effects of copper ions and copper nanomaterials on the output of amino acids from marine algae

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