Application of power plant flue gas in a photobioreactor to grow Spirulina algae, and a bioactivity analysis of the algal water-soluble polysaccharides

Chen, Hsiao‐Wei; Yang, Ta‐Hui; Chen, Mao-Jing; Chang, Yu‐Ching; Lin, Chia-Yang; Wang, Eugene I-Chen; Ho, Chyi-Chen; Huang, Kue-Ming; Yu, Chi-Cheng; Fu, Yang; Wu, Shih‐Hsiung; Lu, Ying‐Chen; Chao, Louis Kuop‐Ping

doi:10.1016/j.biortech.2012.04.106

Cited by 51 publications

(12 citation statements)

References 28 publications

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“…However, considerable amounts of other studies revealed that instead of Glc, Rha accounted for the main sugar moiety of the polysaccharides from A. platensis (Table 4), with the proportion of which reaching up to approximately 50% [24, 45–47]. Additionally, Chen et al [20] found that A. platensis water-soluble polysaccharides were composed of 57.5% Man and 42.5% Glc, which was quite different from the results discussed above.…”

Section: Resultsmentioning

confidence: 99%

“…For structural characterization and downstream applications, it is essential to extract and purify the polysaccharides from algae. Several methods have been used to extract the water-soluble polysaccharides in A. platensis , such as hot water [19] or hot base [17] extraction, organic solvents extraction [20], and ultrasound [21] or microwave [22] assisted hot water extraction. For polysaccharide purification, Sevage refining, trichloroacetic acid (TCA) precipitation, enzymolysis, or the combination of these methods can be applied to remove the protein and other impurities [23, 24].…”

Section: Introductionmentioning

confidence: 99%

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Production and structural characterization of a new type of polysaccharide from nitrogen-limited Arthrospira platensis cultivated in outdoor industrial-scale open raceway ponds

Liu

Yao

Sun

et al. 2019

Biotechnol Biofuels

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Background Carbohydrates are major biomass source in fuel-targeted biorefinery. Arthrospira platensis is the largest commercialized microalgae with good environmental tolerance and high biomass production. However, the traditional target of A. platensis cultivation is the protein, which is the downstream product of carbohydrates. Aiming to provide the alternative non-food carbohydrates source, the feasible manipulation technology on the cultivation is needed, as well as new separation methodology to achieve maximum utilization of overall biomass. Results The present study aimed to demonstrate the feasibility of industrially producing carbohydrate-enriched A. platensis and characterize the structure of the polysaccharide involved. Cultivated in industrial-scale outdoor open raceway ponds under nitrogen limitation, A. platensis accumulated maximally 64.3%DW of carbohydrate. The maximum biomass and carbohydrate productivity reached 27.5 g m −2 day −1 and 26.2 g m −2 day −1 , respectively. The efficient extraction and purification of the polysaccharides include a high-pressure homogenization-assisted hot water extraction followed by flocculation with a non-toxic flocculant ZTC1 + 1, with the polysaccharide purity and total recovery reaching 81% and 75%, respectively. The purified polysaccharide was mainly composed of (1→3)(1→4)- or (1→3)(1→2)-α-glucan with a molecular weight of 300–700 kDa, which differed from the commonly acknowledged glycogen. Conclusions By the way of controlled nitrogen limitation, the high carbohydrate production of A. platensis in the industrial scale was achieved. The α-glucan from A. platensis could be a potential glucose source for industrial applications. A non-toxic separation method of carbohydrate was applied to maintain the possibility of utilization of residue in high-value field. Electronic supplementary material The online version of this article (10.1186/s13068-019-1470-3) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Production and structural characterization of a new type of polysaccharide from nitrogen-limited Arthrospira platensis cultivated in outdoor industrial-scale open raceway ponds

Liu

Yao

Sun

et al. 2019

Biotechnol Biofuels

View full text Add to dashboard Cite

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“…Applying outdoor cultivation systems can potentially reduce production costs by reducing light and temperature control [62,[90][91][92]. Relevance was found in an outdoor pilot scale cultivation of Spirulina sp.…”

Section: Process Conditionsmentioning

confidence: 99%

“…Temperature levels ranged from 30-34 • C during 15 days of experiment. The system was able to produce 2.36 g L −1 and produce a CPS with immunogenic activity [92].…”

Section: Modes Of Cultivation and Pbr Designmentioning

confidence: 99%

Exopolysaccharides from Cyanobacteria: Strategies for Bioprocess Development

et al. 2020

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Cyanobacteria have the potential to become an industrially sustainable source of functional biopolymers. Their exopolysaccharides (EPS) harbor chemical complexity, which predicts bioactive potential. Although some are reported to excrete conspicuous amounts of polysaccharides, others are still to be discovered. The production of this strain-specific trait can promote carbon neutrality while its intrinsic location can potentially reduce downstream processing costs. To develop an EPS cyanobacterial bioprocess (Cyano-EPS) three steps were explored: the selection of the cyanobacterial host; optimization of production parameters; downstream processing. Studying the production parameters allow us to understand and optimize their response in terms of growth and EPS production though many times it was found divergent. Although the extraction of EPS can be achieved with a certain degree of simplicity, the purification and isolation steps demand experience. In this review, we gathered relevant research on EPS with a focus on bioprocess development. Challenges and strategies to overcome possible drawbacks are highlighted.

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“…Although optimal autotrophic conditions for microalgal cultivation using the simulated gas containing CO 2 have been thoroughly studied, articles about the actual application of industrial flue gas to microalgal cultivation are still scarce, paticularly about photobiroeactor for maximizing the mass transfer of CO 2 to cells in an aqueous environment, as shown in Table 4. Various types of photobireactors, such as airlift, column, and the thin-film column, have been proposed to mitigate CO 2 from flue gas [4][5][6]8,[22][23][24][25][26][27][28]51]. The variation in the unit working volume of each PBR was 1.5 to 1000 L for airlift PBR, 0.18 to 50 L for column PBR, and 5 L to 100 L thin-film column PBR.…”

Section: Discussionmentioning

confidence: 99%

Microalgal-Based Carbon Sequestration by Converting LNG-Fired Waste CO2 into Red Gold Astaxanthin: The Potential Applicability

et al. 2019

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The combinatorial approach of anthropogenic activities and CO2 sequestration is becoming a global research trend to alleviate the average global temperature. Although microalgae have been widely used to capture CO2 from industrial flue gas, the application of bioproducts was limited to bioenergy due to the controversy over the quality and safety of the products in the food and feed industry. Herein, the waste CO2 emitted from large point sources was directly captured using astaxanthin-hyperproducing microalgae Haematococcus pluvialis. Astaxanthin production was successfully carried out using the hypochlorous acid water-based axenic culture process under highly contamination-prone outdoor conditions. Consequently, after 36 days of autotrophic induction, the productivity of biomass and astaxanthin of H. pluvialis (the mutant) reached 0.127 g L−1 day−1 and 5.47 mg L−1 day−1 under high summer temperatures, respectively, which was 38% and 48% higher than that of wild type cell. After grinding the wet astaxanthin-enriched biomass, the extract was successfully approved by compliance validation testing from Korea Food and Drug Administration. The assorted feed improved an immune system of the poultry without causing any side effects. The flue gas-based bioproducts could certainly be used for health functional food for animals in the future.

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Application of power plant flue gas in a photobioreactor to grow Spirulina algae, and a bioactivity analysis of the algal water-soluble polysaccharides

Cited by 51 publications

References 28 publications

Production and structural characterization of a new type of polysaccharide from nitrogen-limited Arthrospira platensis cultivated in outdoor industrial-scale open raceway ponds

Production and structural characterization of a new type of polysaccharide from nitrogen-limited Arthrospira platensis cultivated in outdoor industrial-scale open raceway ponds

Exopolysaccharides from Cyanobacteria: Strategies for Bioprocess Development

Microalgal-Based Carbon Sequestration by Converting LNG-Fired Waste CO2 into Red Gold Astaxanthin: The Potential Applicability

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