The effects of an anionic and a non‐ionic surfactant on growth and nitrogen fixing ability of a cyanobacterium,<i>Gloeocapsa</i>

Tözüm‐Çalgan, S.R. Dilek; Atay‐Güneyman, N.Z.

doi:10.1080/10934529409376041

Cited by 10 publications

(5 citation statements)

References 15 publications

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“…Lack of measurable toxicity displayed by SDS over the concentration range studied implies limited interactions with cell membranes and/or intracellular, bioactive macromolecules of U. lactuca. SDS is not particularly toxic towards algae and invertebrates at environmentally realistic concentrations (Tozumcalgan and Atayguneyman 1994;Guilhermino et al 2000;Sandbacka et al 2000). Moreover in some laboratory studies, this and other anionic amphiphiles have been shown to promote algal growth by serving as a direct source of carbon or, through moderate permeation effects, allowing a greater influx of nutrients or an efflux of carbon-rich, nutritionally viable lysis products (Lewis 1990;Dirilgen and Ince 1995).…”

Section: Relative Toxicities Of the Surfactantsmentioning

confidence: 97%

Toxicity of Synthetic Surfactants to the Marine Macroalga, Ulva lactuca

Masakorala

Turner

Brown

2010

Water Air Soil Pollut

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The toxicities of three synthetic surfactants to the marine macroalga, Ulva lactuca, have been examined by monitoring chlorophyll a fluorescence quenching. The anionic surfactant, sodium dodecyl sulphate (SDS), exerted no measurable toxicity over the concentration range 0-10 mg L −1 , while presence of the non-ionic surfactant, Triton X-100 (TX), elicited a small reduction in photochemical efficiency that was independent of concentration. The cationic surfactant, hexadecyltrimethylammonium bromide (HDTMA), incurred a dose-dependent response to ∼3 mg L −1 (EC 50 =2.4 mg L −1 ), but a reduction in toxicity thereafter. Presence of TX had little effect on the toxicity of HDTMA but an equimolar concentration of SDS directly offset the impact of HDTMA on photochemical efficiency. Relative toxicities of the surfactants are attributed to differences in affinity for the algal surface and tendencies to disrupt cell membranes and interact with intracellular macromolecules. Non-linear dose responses and antagonistic effects are attributed to non-specific interactions between molecules of the same surfactant and electrostatic interactions between molecules of different amphiphilic character.

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Section: Relative Toxicities Of the Surfactantsmentioning

confidence: 97%

Toxicity of Synthetic Surfactants to the Marine Macroalga, Ulva lactuca

Masakorala

Turner

Brown

2010

Water Air Soil Pollut

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“…In a study of anionic sodium dodecyl sulphate (SDS) toxicity to various taxa including different species of algae, crustaceans, echinoderms, and fi sh, the bacterium Vibrio fi scheri proved to be the most sensitive (41). Tozum-Calgan and Atay-Guneyman (42) reported that both growth and nitrogen fi xation of the cyanobacterium Gloeocapsa were inhibited in the presence of SDS. Sewage sludge isolates Acinetobacter johnsonii and Oligotropha carboxidovorans showed 50 % and 20 % viability during treatment with 0.2 mg L -1 and 2 mg L -1 of SDS, respectively (43).…”

Section: Toxicity To Bacteriamentioning

confidence: 99%

Surfactants in the Environment

Ivanković

Hrenović

2010

Archives of Industrial Hygiene and Toxicology

337

190

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Surfactants in the EnvironmentSurfactants are a diverse group of chemicals that are best known for their wide use in detergents and other cleaning products. After use, residual surfactants are discharged into sewage systems or directly into surface waters, and most of them end up dispersed in different environmental compartments such as soil, water or sediment. The toxic effects of surfactants on various aquatic organisms are well known. In general, surfactants are present in the environment at levels below toxicity and in Croatia below the national limit. Most surfactants are readily biodegradable and their amount is greatly reduced with secondary treatment in wastewater treatment plants. The highest concern is the release of untreated wastewater or wastewater that has undergone primary treatment alone. The discharge of wastewater polluted with massive quantities of surfactants could have serious effects on the ecosystem. Future studies of surfactant toxicities and biodegradation are necessary to withdraw highly toxic and non-biodegradable compounds from commercial use and replace them with more environmentally friendly ones.

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“…The results of this study are in agreement with other results obtained from various studies on the toxicity of anionic surfactants. Both growth and nitrogen fixation of the cyanobacterium Gloeocapsa were inhibited at 50 ppm of SDS, corresponding to 1.73 × 10 −4 mol L −1 [16]. In another study consisting of various taxa, the EC 50 value obtained for the bacterium Vibrio fischeri was 2.6 mg L −1 of SDS, corresponding to 9.02 × 10 −6 mol L −1 .…”

Section: Resultsmentioning

confidence: 90%

“…The V. fischeri proved to be the most sensitive organism in the study evaluating different species of bacteria, algae, crustaceans, echinoderms and fish [3]. Higher organisms also showed sensitivity to the surfactants, with symptoms including acute toxicity (microorganisms) [3,16], behavioural changes (fish) [17], and skin damage (humans) [18,19]. The sewage sludge isolates A. johnsonii and Oligotropha carboxidovorans [20] showed complete loss of viability during the treatment with 0.07 and 0.7 mg ml .…”

Section: Resultsmentioning

confidence: 99%

Toxicity of anionic and cationic surfactant to Acinetobacter junii in pure culture

Hrenović

Ivanković

2007

Open Life Sciences

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Abstract:The harmful effects of surfactants to the environment are well known. We were interested in investigating their potential toxicity in a pure culture of Acinetobacter junii, a phosphate (P)-accumulating bacterium. Results showed a high acute toxicity of sodium dodecyl sulfate (SDS) and hexadecyltrimethylammonium bromide ( control concentrations of surfactants entering the activated sludge system. The negative effects of these toxicants could greatly decrease populations of P-accumulating bacteria, as well as eukaryotic organisms, inhabiting activated sludge systems, which in turn could result in the decrease of the system efficiency.

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The effects of an anionic and a non‐ionic surfactant on growth and nitrogen fixing ability of a cyanobacterium,Gloeocapsa

Cited by 10 publications

References 15 publications

Toxicity of Synthetic Surfactants to the Marine Macroalga, Ulva lactuca

Toxicity of Synthetic Surfactants to the Marine Macroalga, Ulva lactuca

Surfactants in the Environment

Toxicity of anionic and cationic surfactant to Acinetobacter junii in pure culture

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