Performance of the mixed LED light quality on the growth and energy efficiency of Arthrospira platensis

Mao, Ruixin

doi:10.1007/s00253-018-8923-7

Cited by 24 publications

(21 citation statements)

References 34 publications

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“…For example, as compared with the plants grown in the HPS, plants grown in the LED exhibited 20% higher capacity of photosynthesis and higher levels of soluble carbohydrates in Rosa x hybrida leaves [31]. Moreover, Mao et al [76] reported that a mixed LED (8R2B) had the highest levels of carbohydrates and lipids and largely promoted the growth of Arthrospira platensis as compared with the white LED. Similarly, combinations of R and B significantly stimulated carbohydrate accumulation in tomato ( Solanum lycopersicum ) [77], Doritaenopsis [78], Ageratum houstonianum , Tagetes erecta , and Salvia splendens [16], as compared with the white LED, monochromic LED, or fluorescent light.…”

Section: Discussionmentioning

confidence: 99%

Supplementary Light Source Affects Growth, Metabolism, and Physiology ofAdenophora triphylla(Thunb.) A.DC. Seedlings

Liu

Ren

Jeong

2019

BioMed Research International

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Adenophora triphylla(Thunb.) A.DC., a well-known herbaceous medicinal species, has been reported to protect against human obesity, cancer, and inflammation. Supplementary lighting is a practical strategy to improve crop quality, especially at a propagation stage. However, there has been no study available on the optimal supplementary light source for the commercial production ofA. triphyllaseedlings. In this study, plug seedlings were cultivated in a greenhouse for four weeks under an average daily light intensity of 490μmol·m−2·s−1PPFD coming from the sun and a supplemental lighting (16 h per day) at 120μmol·m−2·s−1PPFD provided by high pressure sodium (HPS), metal halide (MH), far-red (FR) light, white LED (red: green: blue = 2:4:3, LED-w), or mixed (red: green: blue = 4:1:4) LED (LED-mix). The results showed that LED-mix, with a higher percentage of red and blue light, substantially promoted seedling growth compared to other treatments by increasing stem diameter, biomass, specific leaf weight, and root to shoot ratio. The LED-mix also promoted accumulation of soluble sugar, starch, and chlorophyll in the tissue and increased contents of total phenols and flavonoids. Moreover, stomata density and pore area per leaf area under the LED-mix were remarkably greater than those under other treatments. Furthermore, the Western blot analysis revealed that the expression of photosynthetic protein, D1, was notably enhanced by the LED-mix as compared with other light sources. In addition, the LED-mix alleviated the oxidative damage of seedlings by improving enzymatic and nonenzymatic antioxidant systems. Collectively, these results suggest that the LED-mix was the optimal supplementary light source for the production of highest qualityA. triphyllaseedlings.

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Section: Discussionmentioning

confidence: 99%

Supplementary Light Source Affects Growth, Metabolism, and Physiology ofAdenophora triphylla(Thunb.) A.DC. Seedlings

Liu

Ren

Jeong

2019

BioMed Research International

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“…Jungandreas et al [136] reported that the transition from red to blue light in Phaeodactylum tricornutum increases the lipid content, and the reverse transition from blue to red light promotes the synthesis of carbohydrates. Blue light increases carbohydrate content, and the addition of green light can increase protein content in Arthrospira platensis (=Spirulina platensis) [137].…”

Section: Influence Of Spectral Composition Of Lightmentioning

confidence: 99%

“…Okumura et al [76] found that monochromatic blue and mixed red-green-blue LEDs contributed to the formation of the highest biomass in Botryococcus braunii (0.22 and 0.39 mg mL −1 d −1 , respectively) and the highest relative growth rate (9.20 ± 2.16 and 9.47 ± 2.67 µg mL −1 d −1 , respectively). Good results in increasing biomass are achieved with the simultaneous use of blue and red LEDs in Chlamydomonas reinhardtii [144], Arthrospira platensis [137], Auxenochlorella pyrenoidosa, =Chlorella pyrenoidosa [145]. In Arthrospira platensis, the highest biomass formation rates were observed under red lighting, and the lowest under blue lighting [91,146].…”

Section: Influence Of Spectral Composition Of Lightmentioning

confidence: 99%

Influence of Light Conditions on Microalgae Growth and Content of Lipids, Carotenoids, and Fatty Acid Composition

Maltsev

Maltseva

Kulikovskiy

et al. 2021

Biology

214

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Microalgae are a valuable natural resource for a variety of value-added products. The growth of microalgae is determined by the impact of many factors, but, from the point of view of the implementation of autotrophic growth, light is of primary importance. This work presents an overview of the influence of light conditions on the growth of microalgae, the content of lipids, carotenoids, and the composition of fatty acids in their biomass, taking into account parameters such as the intensity, duration of lighting, and use of rays of different spectral composition. The optimal light intensity for the growth of microalgae lies in the following range: 26−400 µmol photons m−2 s−1. An increase in light intensity leads to an activation of lipid synthesis. For maximum lipid productivity, various microalgae species and strains need lighting of different intensities: from 60 to 700 µmol photons m−2 s−1. Strong light preferentially increases the triacylglyceride content. The intensity of lighting has a regulating effect on the synthesis of fatty acids, carotenoids, including β-carotene, lutein and astaxanthin. In intense lighting conditions, saturated fatty acids usually accumulate, as well as monounsaturated ones, and the number of polyunsaturated fatty acids decreases. Red as well as blue LED lighting improves the biomass productivity of microalgae of various taxonomic groups. Changing the duration of the photoperiod, the use of pulsed light can stimulate microalgae growth, the production of lipids, and carotenoids. The simultaneous use of light and other stresses contributes to a stronger effect on the productivity of algae.

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“…Among the various sources of artificial light, light-emitting diodes (LEDs) are characterized by a high level of efficiency, a long lifetime, low energy consumption, and the absence of toxic materials in their composition [ 30 , 31 ]. White, blue, red, green, yellow, and orange LEDs have been reported in previous studies to affect Spirulina , biomass productivity, and quality in terms of its chemical composition or pigment content [ 32 , 33 , 34 , 35 , 36 , 37 ]. For instance, red LED light improved the growth rate of Spirulina by 29–67%, whereas blue LED light increased the production of cellular fats, carbohydrates, and phycocyanin; however, the highest protein production was reported using green and white LED light [ 11 , 32 , 33 , 38 , 39 , 40 ].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Optimizing the Effect of Light Color, Sodium Chloride and Glucose Concentration on Biomass Production and the Quality of Arthrospira platensis Using Response Surface Methodology (RSM)

Nosratimovafagh

Fereidouni

Krujatz

2022

Life

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Arthrospira platensis (Spirulina) biomass is a valuable source of sustainable proteins, and the basis for new food and feed products. State-of-the-art production of Spirulina biomass in open pond systems only allows limited control of essential process parameters, such as light color, salinity control, or mixotrophic growth, due to the high risk of contaminations. Closed photobioreactors offer a highly controllable system to optimize all process parameters affecting Spirulina biomass production (quantity) and biomass composition (quality). However, a comprehensive analysis of the impact of light color, salinity effects, and mixotrophic growth modes of Spirulina biomass production has not been performed yet. In this study, Response Surface Methodology (RSM) was employed to develop statistical models, and define optimal mixotrophic process conditions yielding maximum quantitative biomass productivity and high-quality biomass composition related to cellular protein and phycocyanin content. The individual and interaction effects of 0, 5, 15, and 30 g/L of sodium chloride (S), and 0, 1.5, 2, and 2.5 g/L of glucose (G) in three costume-made LED panels (L) where the dominant color was white (W), red (R), and yellow (Y) were investigated in a full factorial design. Spirulina was cultivated in 200 mL cell culture flasks in different treatments, and data were collected at the end of the log growth phase. The lack-of-fit test showed that the cubic model was the most suitable to predict the biomass concentration and protein content, and the two-factor interaction (2FI) was preferred to predict the cellular phycocyanin content (p > 0.05). The reduced models were produced by excluding insignificant terms (p > 0.05). The experimental validation of the RSM optimization showed that the highest biomass concentration (1.09, 1.08, and 0.85 g/L), with improved phycocyanin content of 82.27, 59.47, 107 mg/g, and protein content of 46.18, 39.76, 53.16%, was obtained under the process parameter configuration WL4.28S2.5G, RL10.63S1.33G, and YL1.00S0.88G, respectively.

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Performance of the mixed LED light quality on the growth and energy efficiency of Arthrospira platensis

Cited by 24 publications

References 34 publications

Supplementary Light Source Affects Growth, Metabolism, and Physiology ofAdenophora triphylla(Thunb.) A.DC. Seedlings

Supplementary Light Source Affects Growth, Metabolism, and Physiology ofAdenophora triphylla(Thunb.) A.DC. Seedlings

Influence of Light Conditions on Microalgae Growth and Content of Lipids, Carotenoids, and Fatty Acid Composition

Modeling and Optimizing the Effect of Light Color, Sodium Chloride and Glucose Concentration on Biomass Production and the Quality of Arthrospira platensis Using Response Surface Methodology (RSM)

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