Trace concentrations of iron nanoparticles cause overproduction of biomass and lipids during cultivation of cyanobacteria and microalgae

Pádrová, Karolína; Lukavský, Jaromír; Nedbalová, Linda; Čejková, Alena; Cajthaml, Tomáš; Sigler, Karel; Vítová, Milada; Řezanka, Tomáš

doi:10.1007/s10811-014-0477-1

Cited by 112 publications

(55 citation statements)

References 27 publications

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“…Addition of 0.1 g/L TiO 2 nanoparticles with UV-A irradiation applied, slightly increased production of fatty acids in Chlorella vulgaris cells, without growth reduction [ 74 ]. Recently, zero-valent iron nanoparticles (5.1 mg/L) were reported to increase lipid productivity in Arthrospira maxima , Desmodesmus subspicatus and Parachlorella kessleri cultures, respectively by 40%, 2.75-fold and by 66% [ 57 ]. Metal stress also causes the alteration of fatty acid profile in microalgae cells.…”

Section: Metal Stress As a Methods For Stimulation Of Bioproduct Symentioning

confidence: 99%

“…Therefore, metal stress can be applied to alter composition of fatty acids in microalgal cells and produce biodiesel of desirable quality and properties [ 117 ]. As a contrary, cultivation of Nannochloropsis limnetica and Trachydiscus minutus in the presence of zero-valent iron nanoparticles (nZVI) caused the decrease in saturated fatty acids (C14:0, C16:0, C18:0) and the increase in eicosapentaenoic acid (C20:5ω3) content in Nannochloropsis and Trachydiscus biomass [ 57 ]. Eicosapentaenoic acid (EPA) can be used as a nutraceutical or pharmacological agent for the treatment of heart and inflammatory diseases [ 122 ].…”

Section: Metal Stress As a Methods For Stimulation Of Bioproduct Symentioning

confidence: 99%

“…Inhibitory activity of nanoparticles also depends on their size [ 49 ] and aged suspension [ 55 ] or growth medium composition [ 53 ]. On the other hand, metal ions released from nanoparticles can also stimulate growth of cyanobacteria and microalgae [ 57 ].…”

Section: Effect Of Metals On Microalgae: Growth Inhibition mentioning

confidence: 99%

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Effect of Metals, Metalloids and Metallic Nanoparticles on Microalgae Growth and Industrial Product Biosynthesis: A Review

Miazek

Iwanek

Remacle

et al. 2015

IJMS

212

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Microalgae are a source of numerous compounds that can be used in many branches of industry. Synthesis of such compounds in microalgal cells can be amplified under stress conditions. Exposure to various metals can be one of methods applied to induce cell stress and synthesis of target products in microalgae cultures. In this review, the potential of producing diverse biocompounds (pigments, lipids, exopolymers, peptides, phytohormones, arsenoorganics, nanoparticles) from microalgae cultures upon exposure to various metals, is evaluated. Additionally, different methods to alter microalgae response towards metals and metal stress are described. Finally, possibilities to sustain high growth rates and productivity of microalgal cultures in the presence of metals are discussed.

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Section: Metal Stress As a Methods For Stimulation Of Bioproduct Symentioning

confidence: 99%

Section: Metal Stress As a Methods For Stimulation Of Bioproduct Symentioning

confidence: 99%

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Effect of Metals, Metalloids and Metallic Nanoparticles on Microalgae Growth and Industrial Product Biosynthesis: A Review

Miazek

Iwanek

Remacle

et al. 2015

IJMS

212

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“…Meyer et al asserted that one of the possible substrates may be a C16 PUFA, that is, 7,10,13–16:3 acid. Apart from other FAs, this acid is produced by D. quadricauda . Table shows the composition of FAs in both control cultivation and after the addition of the inhibitor.…”

Section: Resultsmentioning

confidence: 99%

Polydatin and its derivatives inhibit fatty acid desaturases in microorganisms

Řezanka

Vítová

Kolouchová

et al. 2017

Euro J Lipid Sci & Tech

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Antioxidant plant polyphenols resveratrol and its glycoside polydatin at 500 μg/L were found to have two distinct effects on yeasts and algae depending on the cell content of polyunsaturated fatty acids (PUFA). In yeasts that do not produce PUFA, resveratrol (0.5 mg/L) increased resistance to biosynthesized ethanol (an important property in winemaking) to 22% EtOH in Saccharomyces cerevisiae and 14% EtOH in Torulaspora delbrückii, the fatty acid content being changed only slightly, whereas in the PUFA‐producing algae Desmodesmus quadricauda and Euglena gracilis both compounds act as inhibitors of Δ4 desaturases blocking the formation of both even‐ and odd‐numbered PUFA having the first double‐bond in position 4. This leads to the biotechnologically desirable accumulation of the health‐beneficial polyunsaturated fatty acids (PUFAs), docosapentaenoic (DPA), and docosahexaenoic acid (DHA). Practical applications: Employing natural stilbene compounds has far‐reaching use in biotechnological applications such as the production of ethanol used for biofuels or production of wine and beer. It allows the production of beer with higher alcohol content, without resorting to the use of consumer‐unacceptable genetically modified yeast. In brewing, when the yeast is often repeatedly reused to ferment fresh wort, higher resistance of yeast in the presence of these compounds can lead to an increase in the number of yeast reuses and thereby reduce economic costs of the brewery needed for preparation of inocula. Using polydatin as inhibitor of Δ4 desaturase in Euglena and Desmodesmus algae blocks the biosynthesis of both even‐ and odd‐numbered PUFAs having a double bond in position 4. This leads to a change in the content of fatty acids and accumulation of biosynthetic precursors, e.g., 22:5n‐3 acid that has more favorable pharmacological effects than docosahexaenoic acid (22:6n‐3) Natural stilbenes such as polydatin and resveratrol have not yet been known as inhibitors of desaturases. We found that they alter the fatty acid composition in microorganisms containing PUFA (algae) by inhibiting Δ4 desaturase and thus blocking the biosynthesis of specific PUFAs. Inhibition of Δ4 desaturase produces oils with a higher proportion of DPA. Moreover, these compounds increase yeast resistance to ethanol.

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“…Metal and metal oxide nanoparticles (such as Zn, Mg, Se, Cu, TiO2, Fe2O3, MgO and Carbon) have been introduced as elicitors in different microalgal and cyanobacterial species. The use of trace or low nanoparticle concentrations has reportedly induced stimulation of algal biomass and pigment content with enhanced lipid production [11][12][13][14][15][16]. The effects of AgNPs on diatom Skeletonema costatum [17], Thalassiosira pseudonana and Cyanobacterium synechococcus sp.…”

Section: Introductionmentioning

confidence: 99%

Characterization and Impact of Silver nanoparticles on cell growth, lipid, carbohydrate and fatty acids of Chlorella vulgaris and Dictyochloropsis splendida

Shanab¹,

Partila²,

Ali³

et al. 2019

Preprint

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Background: Many efforts have been made to increase the productivity of microalgae for biodiesel productions. The use of silver nanoparticles is the novel way to elicit stress responses with enhanced lipid level. Results: In this study, the biosynthesis of extracellular silver nanoparticles (AgNPs) was reported and their impacts as elicitors on the cell growth and metabolite contents of Chlorella vulgaris and Dictyochloropsis splendida were evaluated. The production of AgNPs was achieved by the reduction of silver nitrate (AgNO3) solution, after incubation at 35°C overnight with Pseudomonas aeruginosa supernatant, and exposed to gamma irradiation at 100 Gy for 1.5 mins. The biosynthesis was confirmed by the maximum absorption peak at 455 nm with the UV–Vis Spectrophotometer. The Atomic Force Microscopy (AFM) recorded the spherical nanoparticles size of 10 nm, while the Dynamic Light Scattering (DLS) recorded the size range of 6.7 to 12.1 nm (84.2%) and the particles were monodispersed. The Gas Chromatography/Mass Spectroscopic analysis of the bacterial filtrate before reaction with AgNO3 suggested the presence of ethylene glycol derivatives which may act as a reducing agent of silver ions to silver nanoparticles. Lower AgNPs concentrations (1, 3 and 5 mg/L) enhanced the lipid production but at the expense of cell growth. All AgNPs concentrations however displayed a negative impact on carbohydrates content. The lipid profile of the AgNPs-treated algae showed the appearance or disappearance, and increase or decrease of certain fatty acids, as compared to the untreated control. The Saturated Fatty Acids represented the highest composition (61-67%) of the total fatty acids and Palmitic acids (16:0) were dominant (43.06-46.57%). Conclusion: Lipids of this composition could withstand autoxidation during storage and are perfect feedstock for biodiesel and other lipid based applications.

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Trace concentrations of iron nanoparticles cause overproduction of biomass and lipids during cultivation of cyanobacteria and microalgae

Cited by 112 publications

References 27 publications

Effect of Metals, Metalloids and Metallic Nanoparticles on Microalgae Growth and Industrial Product Biosynthesis: A Review

Effect of Metals, Metalloids and Metallic Nanoparticles on Microalgae Growth and Industrial Product Biosynthesis: A Review

Polydatin and its derivatives inhibit fatty acid desaturases in microorganisms

Characterization and Impact of Silver nanoparticles on cell growth, lipid, carbohydrate and fatty acids of Chlorella vulgaris and Dictyochloropsis splendida

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