An investigation into the effects of silver nanoparticles on natural microbial communities in two freshwater sediments

Bao, Shaopan; Wang, Han; Zhang, Weicheng; Xie, Zhicai; Fang, Tao

doi:10.1016/j.envpol.2016.06.071

Cited by 36 publications

(9 citation statements)

References 47 publications

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“…According to Bao et al, (2016) AgNPs can affect the microbial biomass; however environmental conditions can mitigate the impact of AgNPs on bacterial community structure. Following biodegradation test, the soil pH of control, cellulose, and standard samples were 5.…”

Section: Resultsmentioning

confidence: 99%

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Silver effect on the biodegradation process of styrene-ethylene/butylene-styrene based thermoplastic elastomers compounds upon weathering exposure

Tomacheski¹,

Pittol²,

Vier³

et al. 2018

Ecotoxicol. Environ. Contam.

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The incorporation of antibacterial additives in polymeric materials has become common to reduce the colonization of microorganisms in daily household items. This kind of product can be helpful to prevent diseases, but following the end of its useful lifetime, it might become an environmental problem, causing hazards also to the beneficial soil-borne microbes. This study aims to evaluate the effect of thermoplastic elastomers (TPEs) compounds loaded with silver ions (Ag + _bentonite, Ag + _phosphate) and nanoparticles (AgNp_silica) in the soil microbiota. Samples were exposed to weathering for 3, 6, 9 and 12 months, and monitored by carbon dioxide (CO 2 ) production in the soil for 4 months. Standard sample exposed to weather by 6, 9 and 12 months showed higher CO 2 production than samples unexposed or exposed for 3 months. By contrast, silver-loaded samples had higher CO 2 production in samples pre-aged for 3 months, but the values decreased in samples pre-aged for 6, 9 and 12 months. Moreover, soil microbial counts were lower in samples that had lower CO 2 production. Though the amount of silver in the soil has been lower than the limit of detection, after intense exposure to weather, the degradation of the polymer may have facilitated the release of silver from the TPE matrix, and on these terms, silver may have caused a harmful effect on soil fungi and bacterial population.

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Section: Resultsmentioning

confidence: 99%

“…However, few studies report the impact of materials containing metal in the soil microbiota at the end of their lifecycle (Bao et al, 2016;Samarajeewa et al, 2017;McGee et al, 2017). In this context, investigations addressing the impact of metal ions and nanoparticles on the soil microbial populations are required.…”

Section: Introductionmentioning

confidence: 99%

Silver effect on the biodegradation process of styrene-ethylene/butylene-styrene based thermoplastic elastomers compounds upon weathering exposure

Tomacheski¹,

Pittol²,

Vier³

et al. 2018

Ecotoxicol. Environ. Contam.

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“…4,[81][82][83][84] The toxicity of Ag-NPs can however be greater than Ag + ion toxicity at equivalent concentrations: 38,85,86 a combination of dissolution followed by precipitation would overall lessen the potential toxic impact. PVP coated Ag-NPs, as used in our study, may have limited toxicity compared to uncoated NPs [87][88][89] but coatings can also increase NP toxicity 37,90 so that the overall effect of coatings on the environmental effect of Ag-NP is difficult to forecast.…”

Section: −mentioning

confidence: 96%

“…5,6,18,94,105 In sediments as well as in the water, chemical parameters such as sulphide content will affect toxicity. 88 Furthermore, TiO 2 -NPs are photoactive compounds, which means that the levels and wavelength range of light will influence their toxicity. 2,103,107 For instance, TiO 2 -NPs are toxic to phytoplankton only in the presence of UV radiation.…”

Section: Influence Of Environmental Context On the Toxicity Of Nanopamentioning

confidence: 99%

Environmental context determines the impact of titanium oxide and silver nanoparticles on the functioning of intertidal microalgal biofilms

Passarelli

Cui

Valsami-Jones

et al. 2020

Environ. Sci.: Nano

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“…Reports have shown that soil microorganisms influenced by the building-up of AgNPs in the soil are used to decrease the bacterial abundance [43,44]. In another development, soil properties and structure, as well as bacterial phyla may change due to the varieties of NPs [45]. Some NPs even harm the microbial community composition of activated sludge, especially on the abundance of nitrifying bacteria which also negatively changed the metabolic activity of soil microbes [46].…”

Section: Effect Of Nanoparticlesmentioning

confidence: 99%

Recent Advances in the Chemistry of Bioactive Compounds from Plants and Soil Microbes: a Review

Haruna

Yahaya

2021

Chemistry Africa

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Bioactive compounds derived from plants and microbial sources are required for the survival of the human race and groundbreaking research must continue in this line. Plants and microbes are the major sources of naturally occurring bioactive compounds for numerous biotechnological applications. Recent progress in the fields of bioactive compounds and soil chemistry in agriculture has since given man a lead to the discovery of potent drugs that combat both human and plant diseases. The soil provides the medium for the growth of medicinal plants, but its contamination greatly affects the quality of drugs, food crops, and other essential elements present in the plants which give strength to the body. This area has attracted the attention of scientists and the drug industry toward developing more potent drugs from medicinal plants grown in different soil. The studies of the effect of various parameters and the properties of soil such as; effect of heavy metals, pH, soil organic matter, and phytoremediation process have given a measure of some quality dependence of the soil producing secondary metabolites and soil containing microbes. The information provided will be useful in determine the action of microbes and their interaction with the soil and all true plants producing drugs. Some active compounds in plants and microbes, their properties, and applications have been described in this review. The soil microbes, activities and their interactions, effects of soil particle size, dispersibility and stability of microbes in the soil, and the future outlook for the development of novel active compounds have been reported.

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An investigation into the effects of silver nanoparticles on natural microbial communities in two freshwater sediments

Cited by 36 publications

References 47 publications

Silver effect on the biodegradation process of styrene-ethylene/butylene-styrene based thermoplastic elastomers compounds upon weathering exposure

Silver effect on the biodegradation process of styrene-ethylene/butylene-styrene based thermoplastic elastomers compounds upon weathering exposure

Environmental context determines the impact of titanium oxide and silver nanoparticles on the functioning of intertidal microalgal biofilms

Recent Advances in the Chemistry of Bioactive Compounds from Plants and Soil Microbes: a Review

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