A two-stage model with nitrogen and silicon limitation enhances lipid productivity and biodiesel features of the marine bloom-forming diatom Skeletonema costatum

Gao, Guang; Wu, Min; Fu, Qianqian; Li, Xinshu; Xu, Juntian

doi:10.1016/j.biortech.2019.121717

Cited by 52 publications

(27 citation statements)

References 46 publications

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“…Due to the efficiency of both nutrient limitation methods, a novel two-step model with nitrogen (N)-silicon(Si)-starvation has been suggested. In this strategy, the co-limitation of silicon and nitrogen not only improved lipid accumulation but also increased biodiesel quality of Skeletonema costatum [118].…”

Section: Nutrient Starvationmentioning

confidence: 99%

Improving ‘Lipid Productivity’ in Microalgae by Bilateral Enhancement of Biomass and Lipid Contents: A Review

Shokravi

Ong

et al. 2020

Sustainability

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Microalgae have received widespread interest owing to their potential in biofuel production. However, economical microalgal biomass production is conditioned by enhancing the lipid accumulation without decreasing growth rate or by increasing both simultaneously. While extensive investigation has been performed on promoting the economic feasibility of microalgal-based biofuel production that aims to increase the productivity of microalgae species, only a handful of them deal with increasing lipid productivity (based on lipid contents and growth rate) in the feedstock production process. The purpose of this review is to provide an overview of the recent advances and novel approaches in promoting lipid productivity (depends on biomass and lipid contents) in feedstock production from strain selection to after-harvesting stages. The current study comprises two parts. In the first part, bilateral improving biomass/lipid production will be investigated in upstream measures, including strain selection, genetic engineering, and cultivation stages. In the second part, the enhancement of lipid productivity will be discussed in the downstream measure included in the harvesting and after-harvesting stages. An integrated approach involving the strategies for increasing lipid productivity in up- and down-stream measures can be a breakthrough approach that would promote the commercialization of market-driven microalgae-derived biofuel production.

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Section: Nutrient Starvationmentioning

confidence: 99%

Improving ‘Lipid Productivity’ in Microalgae by Bilateral Enhancement of Biomass and Lipid Contents: A Review

Shokravi

Ong

et al. 2020

Sustainability

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“…Silicon (Si) limitation seems to affect negatively PUFAs' production in diatoms [52] and is likely to be more effective for the accumulation of neutral lipids for biofuel production, since oils with little PUFA content are highly suitable for biofuel development [53].…”

Section: Nutrientsmentioning

confidence: 99%

Highly Valuable Polyunsaturated Fatty Acids from Microalgae: Strategies to Improve Their Yields and Their Potential Exploitation in Aquaculture

et al. 2021

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Microalgae have a great potential for the production of healthy food and feed supplements. Their ability to convert carbon into high-value compounds and to be cultured in large scale without interfering with crop cultivation makes these photosynthetic microorganisms promising for the sustainable production of lipids. In particular, microalgae represent an alternative source of polyunsaturated fatty acids (PUFAs), whose consumption is related to various health benefits for humans and animals. In recent years, several strategies to improve PUFAs’ production in microalgae have been investigated. Such strategies include selecting the best performing species and strains and the optimization of culturing conditions, with special emphasis on the different cultivation systems and the effect of different abiotic factors on PUFAs’ accumulation in microalgae. Moreover, developments and results obtained through the most modern genetic and metabolic engineering techniques are described, focusing on the strategies that lead to an increased lipid production or an altered PUFAs’ profile. Additionally, we provide an overview of biotechnological applications of PUFAs derived from microalgae as safe and sustainable organisms, such as aquafeed and food ingredients, and of the main techniques (and their related issues) for PUFAs’ extraction and purification from microalgal biomass.

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“…Diatoms also have elaborate vacuoles where it can store large quantities of nutrients due to high surface: volume ratio (Eppley and Rogers 1970) that renders them productive even under nutrient limited conditions (Falkowski et al 2004). The diatom growth rate often tends to be as high as 2-4 cell divisions/ day (Furnas 1990) which is beneficial for mass cultivation under different mixing conditions and light intensities (Gao et al 2019;Vella et al 2019;Wang and Seibert 2017). All these properties make diatoms a cost-effective biomass that can be easily cultured in different experimental conditions.…”

Section: Diatoms Have Better Physiological Adaptations Over Other Algal Groupsmentioning

confidence: 99%

Diatoms: Miniscule biological entities with immense importance in synthesis of targeted novel bioparticles and biomonitoring

Biswas

Choudhury

2021

J Biosci

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Diatoms are the most abundant microscopic unicellular protists in natural lotic ecosystems. They are the major component of the producer community in aquatic ecosystems that also play important roles in biostratigraphy, paleoclimatology and overall ecosystem functioning. In recent times as ultrastructural details of diatom frustule has been established, it has become evident that frustule nanoscale structures play a significant role in adsorption and bioaccumulation of heavy metals. Physical processes like bioaccumulation in conjunction with cell surface ligands and functional groups allow diatoms to convert toxic forms of metals to their more utilizable forms. This unique aspect of diatom has been exploited in recent times for the synthesis of novel nanoparticles under in vitro conditions. Moreover, biomonitoring using diatoms is increasingly becoming a preferred choice for assessment of water quality due to their time-integrative characteristic. Although both these aspects include diatom and metal speciation under in vitro and in situ conditions, a comprehensive study addressing both these areas has remained obscure. Thus, the present work aims at integrating the aspects of novel metal particle synthesis and biomonitoring of habitats with diatom as the principal biological entity involved in these processes.

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A two-stage model with nitrogen and silicon limitation enhances lipid productivity and biodiesel features of the marine bloom-forming diatom Skeletonema costatum

Cited by 52 publications

References 46 publications

Improving ‘Lipid Productivity’ in Microalgae by Bilateral Enhancement of Biomass and Lipid Contents: A Review

Improving ‘Lipid Productivity’ in Microalgae by Bilateral Enhancement of Biomass and Lipid Contents: A Review

Highly Valuable Polyunsaturated Fatty Acids from Microalgae: Strategies to Improve Their Yields and Their Potential Exploitation in Aquaculture

Diatoms: Miniscule biological entities with immense importance in synthesis of targeted novel bioparticles and biomonitoring

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