Enhanced growth rate and lipid production of freshwater microalgae by adopting two‐stage cultivation system under diverse light and nutrients conditions

Rashid, Naim; Rehman, Muhammad Saif Ur; Han, Jong‐In

doi:10.1111/wej.12110

Cited by 11 publications

(2 citation statements)

References 37 publications

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“…Light is another important parameter to consider for the optimization of phototrophic and mixotrophic algal cultivation (Falkowski and Owens, 1980 ; Rashid et al, 2015 ). Increasing the light intensity usually tends to increment the algal growth rate up to the light saturation level.…”

Section: Introductionmentioning

confidence: 99%

Boosting Biomass Quantity and Quality by Improved Mixotrophic Culture of the Diatom Phaeodactylum tricornutum

Villanova

Singh

Pagliardini³

et al. 2021

Front. Plant Sci.

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Diatoms are photoautotrophic unicellular algae and are among the most abundant, adaptable, and diverse marine phytoplankton. They are extremely interesting not only for their ecological role but also as potential feedstocks for sustainable biofuels and high-value commodities such as omega fatty acids, because of their capacity to accumulate lipids. However, the cultivation of microalgae on an industrial scale requires higher cell densities and lipid accumulation than those found in nature to make the process economically viable. One of the known ways to induce lipid accumulation in Phaeodactylum tricornutum is nitrogen deprivation, which comes at the expense of growth inhibition and lower cell density. Thus, alternative ways need to be explored to enhance the lipid production as well as biomass density to make them sustainable at industrial scale. In this study, we have used experimental and metabolic modeling approaches to optimize the media composition, in terms of elemental composition, organic and inorganic carbon sources, and light intensity, that boost both biomass quality and quantity of P. tricornutum. Eventually, the optimized conditions were scaled-up to 2 L photobioreactors, where a better system control (temperature, pH, light, aeration/mixing) allowed a further improvement of the biomass capacity of P. tricornutum to 12 g/L.

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Section: Introductionmentioning

confidence: 99%

Boosting Biomass Quantity and Quality by Improved Mixotrophic Culture of the Diatom Phaeodactylum tricornutum

Villanova

Singh

Pagliardini³

et al. 2021

Front. Plant Sci.

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show abstract

“…The autotrophic growth of microalgae is facilitated by photosynthesis, enriched with light, inorganic nutrients, and carbon dioxide inorganic nutrients present in the water [58]. The proliferation of algae is shaped by a mix of physical, chemical, and biological elements, predominantly light and nutrients [59]. Our research focused on examining microalgae biomass at three different light levels, revealing that Cyclotella meneghiniana in low-light conditions exhibited the greatest cell density after a 12-day incubation period (Figure 4a).…”

Section: Physiological Effects On Cyclotella Meneghinianamentioning

confidence: 99%

Light and Nutrient Conditions Influence Fucoxanthin Production of the Microalgae Cyclotella meneghiniana

Chinnappan,

Cai,

et al. 2024

Applied Sciences

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Fucoxanthin has attracted the attention of scholars because of its health benefits in terms of anticancer, weight loss, antidiabetic, hypolipidemic, and antioxidant functions. Researchers have found that the fucoxanthin content of microalgae was higher than that of macroalgae. Therefore, the microalgae Cyclotella meneghiniana was isolated and maintained under varying light and modified nutrient conditions. The results of this study showed that Cyclotella meneghiniana had better photosynthetic activity and higher biomass under low light. Both high trace elements and high nitrogen promoted the accumulation of fucoxanthin in Cyclotella meneghiniana. Low light levels and high trace metal contents enhanced the fucoxanthin production (7.76 ± 0.30 mg g−1 DW). The results of the current study will help to enhance fucoxanthin production for commercialization.

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Microalgae biotechnology as an attempt for bioregenerative life support systems: problems and prospects

Yang

Liu

et al. 2019

J of Chemical Tech & Biotech

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Bioregenerative life support system (BLSS) plays a key role in the long‐duration manned space mission. Microalgae‐based BLSS was proposed decades ago but it had a variety of technical problems hindering its application in space mission. However, in recent years, a lot of effort has been devoted to this field and great progresses have been achieved in the research of microalgae‐based BLSS. Therefore, the main aim of this work is to summarize the previous progress and find the challenges faced by microalgae‐based BLSS technology. In this regard, this works introduces the concept of microalgae‐based BLSS and presents its development paths in the past decades. Additionally, technology updates in the aspects of microalgae‐based oxygen generation, value‐added biomass production as food alternative, and wastes treatment by microalgae are summarized. Challenges faced by microalgae‐based BLSS and potential solutions are discussed. This work provides a deep understanding of microalgae‐based BLSS and that it would be beneficial for promoting implementation of this novel technology in manned space missions. © 2019 Society of Chemical Industry

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Enhanced growth rate and lipid production of freshwater microalgae by adopting two‐stage cultivation system under diverse light and nutrients conditions

Cited by 11 publications

References 37 publications

Boosting Biomass Quantity and Quality by Improved Mixotrophic Culture of the Diatom Phaeodactylum tricornutum

Boosting Biomass Quantity and Quality by Improved Mixotrophic Culture of the Diatom Phaeodactylum tricornutum

Light and Nutrient Conditions Influence Fucoxanthin Production of the Microalgae Cyclotella meneghiniana

Microalgae biotechnology as an attempt for bioregenerative life support systems: problems and prospects

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