Towards sustainable sources for omega-3 fatty acids production

Adarme-Vega, T. Catalina; Thomas‐Hall, Skye R.; Schenk, Peer M.

doi:10.1016/j.copbio.2013.08.003

Cited by 192 publications

(114 citation statements)

References 34 publications

Supporting

Mentioning

111

Contrasting

Unclassified

Order By: Relevance

“…Under oxidative stress, numerous radicals affect various physiological functions. Thanks to two or more double bonds in the molecule, PUFAs have a radical scavenging potential which contributes to cell protection against increased ROS level (Adarme- Vega et al 2014). This suggests that high accumulation of unsaturated fatty acids may play an important role in protection mechanisms.…”

Section: Biomass Yield and Lipid Content Of Nzvi-treated Microalgaementioning

confidence: 99%

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

et al. 2014

View full text Add to dashboard Cite

Cultivation in Zehnder medium containing 5.1 mg L −1 zero-valent iron nanoparticles (nZVI) boosted the growth of the green algae Desmodesmus subspicatus, Dunaliella salina, Parachlorella kessleri and Raphidocelis subcapitata and the eustigmatophycean algae Nannochloropsis limnetica and Trachydiscus minutus. In the cyanobacterium Arthrospira maxima, growth stimulation occurred at 1.7-5.1 mg L −1 nZVI. In all studied microorganisms, 5.1 mg L −1 nZVI strongly enhanced lipid accumulation, decreased the content of saturated and monounsaturated fatty acids with the exception of palmitoleic acid and increased the content of polyunsaturated fatty acids in cells. The nZVI particles may provide a suitable source of iron causing increased cell growth and induce metabolic changes resulting in higher lipid production and changes in fatty acid (FA) composition. Altered lipid synthesis may reflect the oxidative action of nZVI. Further research may contribute to optimizing the economical production of oils from oleaginous microorganisms and help clarify the mechanism of nZVI action.

show abstract

Section: Biomass Yield and Lipid Content Of Nzvi-treated Microalgaementioning

confidence: 99%

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

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Furthermore, there are quality concerns with high loads of mercury in some fish species (Kris-Etherton et al 2002), "fishy" taste, and increasing customer preference for vegetarian dietary products (Leitzmann 2014). Although some terrestrial crops such as chia seed and certain nuts have high PUFA(n-3) contents, they generally lack essential omega-3 fatty acids such as eicosapentaenoic acid (EPA) or docosahexaenoic acid (DHA) (Adarme-Vega et al 2014;Dubois et al 2007;Simopoulos 2002), have low productivities of oil, and also compete with traditional food crops for arable land (Foley et al 2011). …”

Section: Introductionmentioning

confidence: 99%

Spatial, seasonal, and within-plant variation in total fatty acid content and composition in the brown seaweeds Dictyota bartayresii and Dictyopteris australis (Dictyotales, Phaeophyceae)

et al. 2014

View full text Add to dashboard Cite

We investigated the spatial, seasonal, and withinplant variation in total fatty acids (TFA) and fatty acid (FA) composition in the brown seaweeds Dictyota bartayresii sampled from Nelly Bay, Orpheus Island, and Kissing Point (Northern Queensland, Australia) and Dictyopteris australis sampled from Nelly Bay. Both species were present year round, but with no consistent seasonal pattern in plant size, and had an annualized mean content of TFA of 5 % dry weight (dw) that is among the highest recorded for seaweeds. For Dictyota, larger plants had a higher content of TFA and a higher proportion of polyunsaturated omega-3 FA (PUFA(n-3)) than smaller plants, while for Dictyopteris, the TFA content and the proportion of PUFA(n-3) were unrelated to plant size. TFA in Dictyota varied considerably between locations (~40 %) (3.5-5.5 % dw) and to a lesser degree between seasons (~10 %) with a lower content of TFA and higher proportion of PUFA(n-3) in winter. Dictyopteris had añ 10 % higher content of TFA in winter but with no seasonal pattern in the composition of FA. There was also within-plant variation in FA, as TFA decreased from the tips toward the base in both species, and in Dictyopteris, the tips had a higher proportion of saturated FA (SFA) and PUFA(n-3) than the base. The presence of site-and species-specific variation in the content and composition of fatty acids reinforces the need for detailed analyses of the biochemical profile of seaweed biomass, including their extracts or purified compounds, if the focus is nutritional applications based on lipids.

show abstract

“…Currently, a need exists to find abundant, inexpensive, and safe ways to supplement our diets with omega-3 fatty acids from sources other than fish or shellfish (1). A safe and potentially inexpensive solution to this demand was triggered by the discovery in 1986 by DeLong and Yayanos (2) that certain deep-sea marine bacteria, and not just eukaryotic microbes (3), could produce omega-3 fatty acids such as EPA and/or DHA.…”

mentioning

confidence: 99%

“…A safe and potentially inexpensive solution to this demand was triggered by the discovery in 1986 by DeLong and Yayanos (2) that certain deep-sea marine bacteria, and not just eukaryotic microbes (3), could produce omega-3 fatty acids such as EPA and/or DHA. This discovery suggested that marine bacteria could be a source of omega-3 fatty acids either by direct isolation from the bacteria or through genetic engineering allowing overproduction in numerous hosts (1,4,5). Soon after the initial discovery, many laboratories also isolated omega-3 fatty acid-producing bacteria from ocean depths, from colder regions of the ocean, and from gastrointestinal tracts of omega-3 fatty acid-containing marine fish, such as mackerel, or shellfish (6)(7)(8)(9).…”

mentioning

confidence: 99%

The Microbiota of Freshwater Fish and Freshwater Niches Contain Omega-3 Fatty Acid-Producing Shewanella Species

Dailey

McGraw

Jensen

et al. 2016

Appl Environ Microbiol

View full text Add to dashboard Cite

Approximately 30 years ago, it was discovered that free-living bacteria isolated from cold ocean depths could produce polyunsaturated fatty acids (PUFA) such as eicosapentaenoic acid (EPA) (20:5n-3) or docosahexaenoic acid (DHA) (22:6n-3), two PUFA essential for human health. Numerous laboratories have also discovered that EPA-and/or DHA-producing bacteria, many of them members of the Shewanella genus, could be isolated from the intestinal tracts of omega-3 fatty acid-rich marine fish. If bacteria contribute omega-3 fatty acids to the host fish in general or if they assist some bacterial species in adaptation to cold, then cold freshwater fish or habitats should also harbor these producers. Thus, we undertook a study to see if these niches also contained omega-3 fatty acid producers. We were successful in isolating and characterizing unique EPA-producing strains of Shewanella from three strictly freshwater native fish species, i.e., lake whitefish (Coregonus clupeaformis), lean lake trout (Salvelinus namaycush), and walleye (Sander vitreus), and from two other freshwater nonnative fish, i.e., coho salmon (Oncorhynchus kisutch) and seeforellen brown trout (Salmo trutta). We were also able to isolate four unique free-living strains of EPA-producing Shewanella from freshwater habitats. Phylogenetic and phenotypic analyses suggest that one producer is clearly a member of the Shewanella morhuae species and another is sister to members of the marine PUFA-producing Shewanella baltica species. However, the remaining isolates have more ambiguous relationships, sharing a common ancestor with non-PUFA-producing Shewanella putrefaciens isolates rather than marine S. baltica isolates despite having a phenotype more consistent with S. baltica strains.

show abstract

Towards sustainable sources for omega-3 fatty acids production

Cited by 192 publications

References 34 publications

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

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

Spatial, seasonal, and within-plant variation in total fatty acid content and composition in the brown seaweeds Dictyota bartayresii and Dictyopteris australis (Dictyotales, Phaeophyceae)

The Microbiota of Freshwater Fish and Freshwater Niches Contain Omega-3 Fatty Acid-Producing Shewanella Species

Contact Info

Product

Resources

About