Lipid composition of the red alga exposed to different levels of photon irradiance

Khotimchenko, S. V.; Yakovleva, I. M.

doi:10.1016/j.phytochem.2004.10.024

Cited by 223 publications

(125 citation statements)

References 32 publications

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“…The acetyl-CoA carboxylase activity was enhanced by 2-fold and 4-fold respectively after 4 and15 h growth without silicate in Cyclotella cryptica (Roessler, 1988). Light irradiation is also well known to modulate lipid content in algae and under photooxidative stress microalgae are capable to produce extra TAGs (Khotimchenko and Yakovleva, 2005;Hu et al, 2008). Under UV-A and UV-B radiation, lipid accumulation could be induced in a very short time (≤1 h) in Nitzschia palea (Arts et al, 2000).…”

Section: Environmental Stimulantsmentioning

confidence: 97%

Exploring Valuable Lipids in Diatoms

et al. 2017

Front. Mar. Sci.

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Diatoms are one major group of algae in oceans that accounts almost half of marine primary food production and have also been identified as a promising candidate for biofuel production for their high level accumulation of lipids. They have gained increasingly attention for their potential applications in pharmaceuticals, cosmetics, nutrient supplements, and biofuels. This review aims to summarize the recent advances in diatom lipid study. Chemical structures and bioactivities of different lipid classes are discussed with a focus on valuable lipids such as fatty acids, polar lipids, steroids, and oxylipins from various diatoms species. Further, current extraction and fractionation approaches are compared and recent analytical techniques and methods are also reviewed with an emphasis on lipid class composition and fatty acid profiling. Biosynthetic pathways and key catalyzing enzymes are illustrated for a better understanding of fatty acid metabolism. Past engineering attempts toward generating appropriate diatom strains for lipid production are discussed with examples using mutagenesis, environmental stimulants, and genetic modification methods. Some possible future directions and applications of diatom-derived lipids are also proposed.

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Section: Environmental Stimulantsmentioning

confidence: 97%

Exploring Valuable Lipids in Diatoms

et al. 2017

Front. Mar. Sci.

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“…Typically, low light intensity induces the formation of polar lipids, particularly the membrane polar lipids associated with the chloroplast, whereas high light intensity decreases total polar lipid content with a concomitant increase in the amount of neutral storage lipids, mainly TAGs (Brown et al, 1996;Khotimchenko and Yakovleva, 2005;Napolitano, 1994;Orcutt and Patterson, 1974;Spoehr and Milner, 1949;Sukenik et al, 1989).…”

Section: Light Intensitymentioning

confidence: 99%

Microalgal triacylglycerols as feedstocks for biofuel production: perspectives and advances

et al. 2008

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SummaryMicroalgae represent an exceptionally diverse but highly specialized group of micro-organisms adapted to various ecological habitats. Many microalgae have the ability to produce substantial amounts (e.g. 20-50% dry cell weight) of triacylglycerols (TAG) as a storage lipid under photo-oxidative stress or other adverse environmental conditions. Fatty acids, the building blocks for TAGs and all other cellular lipids, are synthesized in the chloroplast using a single set of enzymes, of which acetyl CoA carboxylase (ACCase) is key in regulating fatty acid synthesis rates. However, the expression of genes involved in fatty acid synthesis is poorly understood in microalgae. Synthesis and sequestration of TAG into cytosolic lipid bodies appear to be a protective mechanism by which algal cells cope with stress conditions, but little is known about regulation of TAG formation at the molecular and cellular level. While the concept of using microalgae as an alternative and renewable source of lipid-rich biomass feedstock for biofuels has been explored over the past few decades, a scalable, commercially viable system has yet to emerge. Today, the production of algal oil is primarily confined to high-value specialty oils with nutritional value, rather than commodity oils for biofuel. This review provides a brief summary of the current knowledge on oleaginous algae and their fatty acid and TAG biosynthesis, algal model systems and genomic approaches to a better understanding of TAG production, and a historical perspective and path forward for microalgae-based biofuel research and commercialization.

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“…Previous studies have demonstrated that the biomass and lipid content in some microalgae were affected by various cultivation conditions such as nitrogen supply and its sources (Li et al, 2008;Arumugam et al, 2013), salt concentration (Takagi et al, 2006), level of CO 2 (Chinnasamy et al, 2009), light intensity, and temperature (Renaud et al, 2002;Khotimchenko and Yakovleva, 2005;Juneja et al, 2013). These observations allowed us to hypothesize that there might be a profound effect of media type and carbon sources on the biomass and oil content of the microalgae S. sticticum, T. reflexa, U. elongatum, and C. turgidus.…”

Section: Introductionmentioning

confidence: 99%

Influence of culture media and carbon sources on biomass productivityand oil content of the algae Sirogonium sticticum, Temnogyra reflexa,Uronema elongatum, and Chroococcus turgidus

Alam¹,

Ullah²,

Alam³

et al. 2015

Turk J Bot

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seeds contain oil in extractable quantities. Therefore, algae appear to be the cheapest source among all the renewable sources for biodiesel production. Green microalgae contain 20% to 70% lipid and exhibit extraordinary potential for cultivation as energy crops (Xu et al., 2006;de Vries et al., 2010). They do not need arable land for cultivation and can be grown in industrial, municipal, and agricultural effluents, and fresh-and seawater (Chinnasamy et al., 2010). The growth and oil producing efficiency of algae is much higher than that of conventional and oil seed crops such as corn and soybean (Li et al., 2008). Due to its high oil content, various countries like the UK, USA, China, Belgium, Denmark, India, and Singapore have started utilizing algae as a source of biofuels on a commercial scale.Cultivation modes and nutritional management affect the growth rate and biochemical composition of algae (Hsieh and Wu, 2009). Previous studies have demonstrated that the biomass and lipid content in some microalgae were affected by various cultivation conditions such as nitrogen supply and its sources (

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Lipid composition of the red alga exposed to different levels of photon irradiance

Cited by 223 publications

References 32 publications

Exploring Valuable Lipids in Diatoms

Exploring Valuable Lipids in Diatoms

Microalgal triacylglycerols as feedstocks for biofuel production: perspectives and advances

Influence of culture media and carbon sources on biomass productivityand oil content of the algae Sirogonium sticticum, Temnogyra reflexa,Uronema elongatum, and Chroococcus turgidus

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