Effect of light quality supplied by light emitting diodes (LEDs) on growth and biochemical profiles of Nannochloropsis oculata and Tetraselmis chuii

Schulze, Peter S.C.; Pereira, Hugo; Santos, Tamára; Schueler, Lisa; Guerra, Rui; Barreira, Luísa; Perales, José A.; Varela, João

doi:10.1016/j.algal.2016.03.034

Cited by 83 publications

(32 citation statements)

References 71 publications

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“…However, in terms of EPA productivity, white fluorescent light was still the best light source for this strain (Schulze et al, 2016). From all these studies, it is clear that the mechanism on how light color affects Nannochloropsis cells and EPA production is still unclear.…”

Section: Nannochloropsis Epa and Light Wavelengthmentioning

confidence: 99%

“…In another study, Schulze et al (2016) observed an increase in EPA content when N. oculata was grown under purple light (wavelength of 405 nm). However, in terms of EPA productivity, white fluorescent light was still the best light source for this strain (Schulze et al, 2016).…”

Section: Nannochloropsis Epa and Light Wavelengthmentioning

confidence: 99%

“…Camacho-Rodríguez et al (2013) observed that the protein content of N. gaditana decreased from 40% to 30% when the KNO 3 concentration was decreased from 16 mM to 2 mM; Schulze et al (2016) showed that light color also affects the protein content of N. oculata, with 405 nm LED resulting in the highest protein content (about 58%). The combination of culture conditions should be carefully chosen as increasing one biochemical parameter means decreasing another one.…”

Section: Extraction Of Proteins From Nannochloropsismentioning

confidence: 99%

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A biorefinery for Nannochloropsis: Induction, harvesting, and extraction of EPA-rich oil and high-value protein

Chua

Schenk

2017

Bioresource Technology

117

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Please cite this article as: Chua, E.T., Schenk, P.M., A biorefinery for Nannochloropsis: induction, harvesting, and extraction of EPA-rich oil and high-value protein, Bioresource Technology (2017), doi: http://dx.doi.org/10. 1016/ j.biortech.2017.05.124 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractMicroalgae have been studied as biofactories for almost four decades. Yet, even until today, many aspects of microalgae farming and processing are still considered exploratory because of the uniqueness of each microalgal species. Thus, it is important to develop the entire process of microalgae farming: from culturing to harvesting, and down to extracting the desired high-value products. Based on its rapid growth and high oil productivities, Nannochloropsis sp. is of particular interest to many industries for the production of highvalue oil containing omega-3 fatty acids, specifically eicosapentaenoic acid (EPA), but also several other products. This review compares the various techniques for induction, harvesting, and extraction of EPA-rich oil and high-value protein explored by academia and industry to develop a multi-product Nannochloropsis biorefinery. Knowledge gaps and opportunities are discussed for culturing and inducing fatty acid biosynthesis, biomass harvesting, and extracting EPA-rich oil and high-value protein from the biomass of Nannochloropsis sp.

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Section: Nannochloropsis Epa and Light Wavelengthmentioning

confidence: 99%

Section: Nannochloropsis Epa and Light Wavelengthmentioning

confidence: 99%

Section: Extraction Of Proteins From Nannochloropsismentioning

confidence: 99%

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A biorefinery for Nannochloropsis: Induction, harvesting, and extraction of EPA-rich oil and high-value protein

Chua

Schenk

2017

Bioresource Technology

117

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“…Light-emitting diodes (LEDs), which emit only a narrow range of photons, are a light source well-suited for this purpose. Schulze et al found that the illumination of blue- and red-colored LEDs, the wavelengths preferred by the microalgae, led to a substantial increase in growth [10]. Okumura et al made a similar observation that Nannochloropsis appeared to be particularly responsive to these wavelengths in that lipid content as well as growth was affected [11].…”

Section: Introductionmentioning

confidence: 99%

Wavelength shift strategy to enhance lipid productivity of Nannochloropsis gaditana

Sung

Han

Lee

et al. 2018

Biotechnol Biofuels

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BackgroundMicroalgae, being a phototroph, grow in the presence of light, and utilizing photons in narrow and specific range of wavelengths. There have been numerous attempts to take advantage of this trait of wavelength-dependent growth for the purpose of increasing biomass productivity. One potential option involves wavelength conversion of sunlight. In the present study, three fluorescent dyes with blue, red, and green emission spectra were employed with the aim of improving sunlight utilization efficiency and thus enhancing biomass and lipid productivity of Nannochloropsis gaditana.ResultsWhen DPA and R101 were used to enrich blue and red spectra, biomass productivity of Nannochloropsis gaditana was increased by 35.1 and 40.3%, respectively. The maximum quantum yield values were higher than 0.6 at the early stage of growth for the cultures grown under DPA- and R101-modified solar radiation. Chlorophyll a content was also 57.0 and 32.3% higher than the control at the early growth stage under DPA- and R101-modified solar radiation, respectively. This stimulation of photosynthetic activity at the early growth stage correlated well with rapid growth under DPA- and R101-modified light during the first 4 days of cultivation. Lipid productivity consequently increased by 26.9 (DPA) and 39.4% (R101) after 10 days of cultivation. An immediate effect on lipid induction was observed in cultures under modified light, which exhibited 19.1% improvement in lipid content at the cost of some degree of impaired growth.ConclusionFluorescent dyes with the capability of enriching wavelengths of light favored by the algal photosystem could indeed be an effective means of promoting growth of Nannochloropsis gaditana. This strategy would be particularly powerful for mass cultivation where sunlight is the only economically viable option for illumination.Electronic supplementary materialThe online version of this article (10.1186/s13068-018-1067-2) contains supplementary material, which is available to authorized users.

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“…Fluorescent lamps consume more energy than LED lamps. However, fluorescent lamps have been used effectively in this study because they are closer to daylight and contain wavelengths required for photosynthesis (Schulze et al, 2016). Fluorescent lamps can provide effective penetration depth.…”

Section: Discussionmentioning

confidence: 99%

Çeşitli yetiştirme ortamlarında ek besin olarak kullanılan peynir altı suyunun biyodizel hammaddesi Chlorella vulgaris’in üretim potansiyeline etkisinin belirlenmesi

Koç¹,

Duran²

2017

Anadolu Journal of Agricultural Sciences

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Effect of light quality supplied by light emitting diodes (LEDs) on growth and biochemical profiles of Nannochloropsis oculata and Tetraselmis chuii

Cited by 83 publications

References 71 publications

A biorefinery for Nannochloropsis: Induction, harvesting, and extraction of EPA-rich oil and high-value protein

A biorefinery for Nannochloropsis: Induction, harvesting, and extraction of EPA-rich oil and high-value protein

Wavelength shift strategy to enhance lipid productivity of Nannochloropsis gaditana

Çeşitli yetiştirme ortamlarında ek besin olarak kullanılan peynir altı suyunun biyodizel hammaddesi Chlorella vulgaris’in üretim potansiyeline etkisinin belirlenmesi

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