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Monte J, Sá M, Parreira C, Galante J, Serra AR, Galinha CF, Costa L, Pereira VJ, Brazinha C, Crespo JG. Recycling of Dunaliella salina cultivation medium by integrated membrane filtration and advanced oxidation. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101460] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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52
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Das P, Thaher M, AbdulQuadir M, Khan S, Chaudhary A, Al-Jabri H. Long-term semi-continuous cultivation of a halo-tolerant Tetraselmis sp. using recycled growth media. BIORESOURCE TECHNOLOGY 2019; 276:35-41. [PMID: 30611084 DOI: 10.1016/j.biortech.2018.12.108] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/27/2018] [Accepted: 12/28/2018] [Indexed: 06/09/2023]
Abstract
In this study, a halotolerant Tetraselmis sp. was selected for 11-month outdoor semi-continuous cultivation in one sq. m raceway tank in the Qatari desert. A fraction of the culture was harvested using ferric chloride, and the growth media was returned to the tank. The recycling of culture media continued till the culture salinity reached 8% NaCl; 90% culture was then harvested, and the remaining culture fraction was used as inoculum for a new cultivation cycle. The growth of Tetraselmis sp. was not affected by incremental salinity although the intracellular metabolites varied; the average biomass productivity was 17.8 g/m2/d. Harvesting efficiency was slightly affected by the increase in salinity. Iron content in the harvested biomass was in the range of 1.5-3.3%, and acidic solution (pH = 1.48) was able to recover 91.3% iron from the harvested biomass. Nonetheless, Tetraselmis sp. could be grown continuously throughout the year in Qatar's climate condition.
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Affiliation(s)
- Probir Das
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha 2713, Qatar.
| | - Mahmoud Thaher
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha 2713, Qatar
| | - Mohammed AbdulQuadir
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha 2713, Qatar
| | - Shoyeb Khan
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha 2713, Qatar
| | - Afeefa Chaudhary
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha 2713, Qatar
| | - Hareb Al-Jabri
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha 2713, Qatar
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53
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Devasya R, Bassi A. Investigation of phyco-remediation of road salt run-off with marine microalgae Nannochloropsis gaditana. ENVIRONMENTAL TECHNOLOGY 2019; 40:553-563. [PMID: 29072117 DOI: 10.1080/09593330.2017.1397768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Accepted: 10/13/2017] [Indexed: 06/07/2023]
Abstract
Phyco-remediation is an environmental-friendly method, which involves the application of beneficial microalgae to treat wastewater-containing pollutants for a diverse range of conditions. Several industrial processes generate hyper saline wastewater, which is a significant challenge for conventional wastewater treatment, and the disposal of saline waters also has a negative impact on the environment. Road salt run-off is one such saline wastewater stream not currently treated and one that contributes significantly to negatively impacting receiving bodies of water. In this study, Nannochloropsis microalgae were able to assimilate >95% of the nitrates within 8 days in road salt concentrations ranging from 2.6% to 4.4% under phototrophic cultivation mode. Biomass yields of 1-2 g/l of culture were obtained with the maximum lipid of 22% (g/g) biomass in the road salt media. The crude road salt media provided all the essential micronutrients needed for algal cultivation. The fatty acid composition analysis of the obtained lipid composed of C16 and C18 over 45% of FAME are suitable for biofuel. This study has established that the use of road salt containing nitrate and phosphate nutrients will support the growth of marine micro algae for remediation of a waste water system that are the concern at winter-prevalent regions.
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Affiliation(s)
- Roopa Devasya
- a Department of Chemical and Biochemical Engineering , Western University , London , Ontario , Canada
| | - Amarjeet Bassi
- a Department of Chemical and Biochemical Engineering , Western University , London , Ontario , Canada
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54
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Biomass and lipid production of a novel freshwater thermo-tolerant mutant strain of Chlorella pyrenoidosa NCIM 2738 in seawater salinity recycled medium. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.10.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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55
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MAPK/ERK and JNK pathways regulate lipid synthesis and cell growth of Chlamydomonas reinhardtii under osmotic stress, respectively. Sci Rep 2018; 8:13857. [PMID: 30218070 PMCID: PMC6138697 DOI: 10.1038/s41598-018-32216-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 09/03/2018] [Indexed: 12/15/2022] Open
Abstract
Microalgae have great potential for the production of biofuels due to the ability of the organism to accumulate large quantities of storage lipids under stress conditions. Mitogen activated protein kinase (MAPK) signaling cascades are widely recognized for their role in stress response signal transduction in eukaryotes. To assess the correlation between MAPK activation and lipid productivity, Chlamydomonas reinhardtii was studied under various concentrations of NaCl. The results demonstrated that C. reinhardtii exhibits elevated levels of extracellular-signal regulated kinase (ERK) and c-Jun N-terminal kinase (JNK) activities after undergoing osmotic stress, as well as an increase in cellular lipid content. To establish a more direct causal link between both kinases and lipid productivity, C. reinhardtii was subjected to biochemically induced regulation of ERK and JNK pathways. Activating the MEK-ERK pathway via C6 ceramide treatment increased ERK activation and lipid production simultaneously, while PD98059 mediated inhibition of the pathway yielded opposite results. Interestingly, suppression of the JNK pathway with SP600125 resulted in a substantial decrease in cell viability under osmotic stress. These results suggest that ERK and JNK MAP kinases have important roles in microalgal lipid accumulation and cell growth under osmotic stress, respectively.
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57
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Pilot-scale production of antibacterial substances by the marine diatom Phaeodactylum tricornutum Bohlin. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.03.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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58
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Chen CY, Nagarajan D, Cheah WY. Eicosapentaenoic acid production from Nannochloropsis oceanica CY2 using deep sea water in outdoor plastic-bag type photobioreactors. BIORESOURCE TECHNOLOGY 2018; 253:1-7. [PMID: 29328929 DOI: 10.1016/j.biortech.2017.12.102] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 12/28/2017] [Accepted: 12/29/2017] [Indexed: 06/07/2023]
Abstract
In this study, Nannochloropsis oceanica CY2 was grown in deep-sea water (DSW)-based medium in 5-L plastic bag-type photobioreactors (PBRs) for the autotrophic production of Eicosapentaenoic acid (EPA, 20:5n-3). EPA production of N. oceanica CY2 was stimulated when it was grown in 100% DSW amended with 1.5 g L-1 NaNO3, achieving a EPA content of 3.1% and a biomass concentration of 3.3 g L-1. An outdoor-simulated microalgae cultivation system was also conducted to validate the feasibility of outdoor cultivation of the CY2 strain in plastic bag-type PBRs. Using an inoculum size of 0.6 g/L, the biomass concentration in the PBR culture was 3.5 g L-1, while the EPA content and productivity reached a maximal level of 4.12% and 7.49 mg L-1 d-1, respectively. When the PBRs were operated on semi-batch mode, the EPA productivity could further increase to 9.9 mg L-1 d-1 with a stable EPA content of 4.1%.
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Affiliation(s)
- Chun-Yen Chen
- University Center for Bioscience and Biotechnology, National Cheng Kung University, Tainan 701, Taiwan.
| | - Dillirani Nagarajan
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Wai Yan Cheah
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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59
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Maeda Y, Yoshino T, Matsunaga T, Matsumoto M, Tanaka T. Marine microalgae for production of biofuels and chemicals. Curr Opin Biotechnol 2018; 50:111-120. [DOI: 10.1016/j.copbio.2017.11.018] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 11/27/2017] [Accepted: 11/28/2017] [Indexed: 01/17/2023]
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60
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Chen Z, Yu T, Ngo HH, Lu Y, Li G, Wu Q, Li K, Bai Y, Liu S, Hu HY. Assimilable organic carbon (AOC) variation in reclaimed water: Insight on biological stability evaluation and control for sustainable water reuse. BIORESOURCE TECHNOLOGY 2018; 254:290-299. [PMID: 29398290 DOI: 10.1016/j.biortech.2018.01.111] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 01/20/2018] [Accepted: 01/22/2018] [Indexed: 05/05/2023]
Abstract
This review highlights the importance of conducting biological stability evaluation due to water reuse progression. Specifically, assimilable organic carbon (AOC) has been identified as a practical indicator for microbial occurrence and regrowth which ultimately influence biological stability. Newly modified AOC bioassays aimed for reclaimed water are introduced. Since elevated AOC levels are often detected after tertiary treatment, the review emphasizes that actions can be taken to either limit AOC levels prior to disinfection or conduct post-treatment (e.g. biological filtration) as a supplement to chemical oxidation based approaches (e.g. ozonation and chlorine disinfection). During subsequent distribution and storage, microbial community and possible microbial regrowth caused by complex interactions are discussed. It is suggested that microbial surveillance, AOC threshold values, real-time field applications and surrogate parameters could provide additional information. This review can be used to formulate regulatory plans and strategies, and to aid in deriving relevant control, management and operational guidance.
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Affiliation(s)
- Zhuo Chen
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China; Key Laboratory of Microorganism Application and Risk Control of Shenzhen, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China
| | - Tong Yu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Huu Hao Ngo
- School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia
| | - Yun Lu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Guoqiang Li
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Qianyuan Wu
- Key Laboratory of Microorganism Application and Risk Control of Shenzhen, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China; Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute, Shenzhen 518055, PR China
| | - Kuixiao Li
- Research and Development Center, Beijing Drainage Group Co., Ltd, Beijing 100124, PR China
| | - Yu Bai
- Research and Development Center, Beijing Drainage Group Co., Ltd, Beijing 100124, PR China
| | - Shuming Liu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Hong-Ying Hu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China; Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute, Shenzhen 518055, PR China.
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61
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Johnson TJ, Katuwal S, Anderson GA, Gu L, Zhou R, Gibbons WR. Photobioreactor cultivation strategies for microalgae and cyanobacteria. Biotechnol Prog 2018. [DOI: 10.1002/btpr.2628] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tylor J. Johnson
- Dept. of Biology and MicrobiologySouth Dakota State UniversityBrookings SD57007
- Dept. of MicrobiologyThe University of TennesseeKnoxville TN37996
| | - Sarmila Katuwal
- Agricultural and Biosystems Engineering Dept.South Dakota State UniversityBrookings SD57007
| | - Gary A. Anderson
- Agricultural and Biosystems Engineering Dept.South Dakota State UniversityBrookings SD57007
| | - Liping Gu
- Dept. of Biology and MicrobiologySouth Dakota State UniversityBrookings SD57007
| | - Ruanbao Zhou
- Dept. of Biology and MicrobiologySouth Dakota State UniversityBrookings SD57007
- BioSNTR, South Dakota State UniversityBrookings SD57007
| | - William R. Gibbons
- Dept. of Biology and MicrobiologySouth Dakota State UniversityBrookings SD57007
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62
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Das P, Quadir MA, Chaudhary AK, Thaher MI, Khan S, Alghazal G, Al-Jabri H. Outdoor Continuous Cultivation of Self-Settling Marine CyanobacteriumChroococcidiopsissp. Ind Biotechnol (New Rochelle N Y) 2018. [DOI: 10.1089/ind.2017.0019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Probir Das
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha, Qatar
| | - Mohammed Abdul Quadir
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha, Qatar
| | - Afeefa Kiran Chaudhary
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha, Qatar
| | - Mahmoud Ibrahim Thaher
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha, Qatar
| | - Shoyeb Khan
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha, Qatar
| | - Ghamza Alghazal
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha, Qatar
| | - Hareb Al-Jabri
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha, Qatar
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63
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Ho SH, Chiu SY, Kao CY, Chen TY, Chang YB, Chang JS, Lin CS. Ferrofluid-assisted rapid and directional harvesting of marine microalgal Chlorella sp. used for biodiesel production. BIORESOURCE TECHNOLOGY 2017; 244:1337-1340. [PMID: 28576481 DOI: 10.1016/j.biortech.2017.05.110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 05/17/2017] [Accepted: 05/18/2017] [Indexed: 06/07/2023]
Abstract
In this work, a novel harvesting strategy using ferrofluids coupled with flocculation as a magnetic directional harvesting system was developed, providing a fast and easy way to effectively collect microalgae with no further modifications made to the ferrofluids. With a ferrofluid dosage of 25mgL-1, a high harvesting efficiency of 95-100% was achieved within 1min. In addition, we successfully performed a wastewater recycling strategy coupled with a microalgal ferrofluid-harvesting dynamic flow-through system to harvest biomass of Chlorella sp. MTF-7 which could achieve over 80% of the maximum level after three repeated recycling cultivations. This work demonstrated the use of an integrated microalgal ferrofluid-harvesting dynamic flow-through system to develop a simple and effective strategy to enhance microalgal harvesting efficiency, along with wastewater recycling, in a marine microalgal Chlorella sp. MTF-7.
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Affiliation(s)
- Shih-Hsin Ho
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute Technology, Harbin, PR China.
| | - Sheng-Yi Chiu
- Water Technology Division, Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - Chien-Ya Kao
- Agricultural Technology Research Institute, Hsinchu, Taiwan
| | - Tsai-Yu Chen
- Department of Biological Science and Technology, National Chiao Tung University, Taiwan
| | - Yu-Bin Chang
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Taiwan
| | - Jo-Shu Chang
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute Technology, Harbin, PR China; Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan
| | - Chih-Sheng Lin
- Department of Biological Science and Technology, National Chiao Tung University, Taiwan
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64
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65
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Hwang JH, Rittmann BE. Effect of permeate recycling and light intensity on growth kinetics of Synechocystis sp. PCC 6803. ALGAL RES 2017. [DOI: 10.1016/j.algal.2017.09.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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66
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Su HY, Chou HH, Chow TJ, Lee TM, Chang JS, Huang WL, Chen HJ. Improvement of outdoor culture efficiency of cyanobacteria by over-expression of stress tolerance genes and its implication as bio-refinery feedstock. BIORESOURCE TECHNOLOGY 2017; 244:1294-1303. [PMID: 28457721 DOI: 10.1016/j.biortech.2017.04.074] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 04/02/2017] [Accepted: 04/18/2017] [Indexed: 06/07/2023]
Abstract
This study was undertaken to increase the biomass and carbohydrate productivities of a freshwater cyanobacterium Synechococcus elongatus under hot outdoor conditions through genetic manipulation to facilitate the application of using the cyanobacterial biomass as bio-refinery feedstocks. The stress tolerance genes (hspA, osmotin) were expressed in S. elongatus to improve their growth under various environment stresses of outdoor cultivation. The results revealed that over-expression of hspA and osmotin significantly improved temperature (45°C), high light intensity, and salt tolerances of S. elongatus cells, making it capable of efficiently growing in seawater under outdoor cultivation. The carbohydrate productivity of these stress tolerant strains was also 15-30-fold higher than that of the control strain, although the carbohydrate contents of the recombinant and control strains were similar. Our findings demonstrate that the genetic engineering for improved stresses tolerance in S. elongatus could facilitate the feasibility of using cyanobacteria as feedstock for bio-refinery industry.
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Affiliation(s)
- Hsiang-Yen Su
- Department of Biotechnology, Fooyin University, Kaohsiung 831, Taiwan; Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan; Doctoral Degree Program in Marine Biotechnology, Academia Sinica, Taipei 115, Taiwan
| | - Hsiang-Hui Chou
- Department of Biotechnology, Fooyin University, Kaohsiung 831, Taiwan; Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Te-Jin Chow
- Department of Biotechnology, Fooyin University, Kaohsiung 831, Taiwan
| | - Tse-Min Lee
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan; Doctoral Degree Program in Marine Biotechnology, Academia Sinica, Taipei 115, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Jo-Shu Chang
- Department of Chemical Engineering, National Cheng-Kung University, Tainan 701, Taiwan; Reserach Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan
| | - Wen-Lii Huang
- Department of Agronomy, National Chiayi University, Chiayi 600, Taiwan
| | - Hsien-Jung Chen
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan; Doctoral Degree Program in Marine Biotechnology, Academia Sinica, Taipei 115, Taiwan; Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
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67
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Cross-study analysis of factors affecting algae cultivation in recycled medium for biofuel production. ALGAL RES 2017. [DOI: 10.1016/j.algal.2017.03.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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68
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The use of desalination concentrate as a potential substrate for microalgae cultivation in Brazil. ALGAL RES 2017. [DOI: 10.1016/j.algal.2016.08.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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69
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Tenno T, Uiga K, Mashirin A, Zekker I, Rikmann E. Modeling Closed Equilibrium Systems of H2O–Dissolved CO2–Solid CaCO3. J Phys Chem A 2017; 121:3094-3100. [DOI: 10.1021/acs.jpca.7b00237] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Toomas Tenno
- Institute of Chemistry, University of Tartu, 14a Ravila St., Tartu 50411, Estonia
| | - Kalev Uiga
- Institute of Chemistry, University of Tartu, 14a Ravila St., Tartu 50411, Estonia
| | - Alexsey Mashirin
- Institute of Chemistry, University of Tartu, 14a Ravila St., Tartu 50411, Estonia
| | - Ivar Zekker
- Institute of Chemistry, University of Tartu, 14a Ravila St., Tartu 50411, Estonia
| | - Ergo Rikmann
- Institute of Chemistry, University of Tartu, 14a Ravila St., Tartu 50411, Estonia
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70
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Choi JA, Kim DY, Seo YH, Han JI. Application of Fe(NO 3) 3-based as nitrogen source and coagulant for cultivation and harvesting of Chlorella sorokiniana. BIORESOURCE TECHNOLOGY 2016; 222:374-379. [PMID: 27744162 DOI: 10.1016/j.biortech.2016.09.091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 09/20/2016] [Accepted: 09/21/2016] [Indexed: 06/06/2023]
Abstract
In this study, Chlorella sorokiniana was successfully cultivated in the recycled medium whose nitrogen was supplied directly from the coagulant, Fe(NO3)3. With a dosage of 0.80g/L, harvesting efficiency of 95% could be achieved. What is more, this amount of nitrate in the coagulant was enough to fully support the growth of C. sorokiniana during the 8day cultivation period, almost as much as the initial nitrogen content in the BG11 culture medium. Other nutrients had to be supplemented, however, with at least 50% amount as in the BG11 recipe. C. sorokiniana culture grown in recycled medium replenished with 50% of nutrients showed much higher Fatty acid methyl esters (FAME) productivity than the control, with 88.3mg/L/day. The recycle of the medium is certainly a way of reducing the water footprint for the purpose of microalgae-derived biodiesel production; better still, it may serve to lower the nutrient footprint.
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Affiliation(s)
- Jung Ah Choi
- Department of Civil and Environmental Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Dong-Yeon Kim
- Department of Civil and Environmental Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Yeong Hwan Seo
- Department of Civil and Environmental Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Jong-In Han
- Department of Civil and Environmental Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea.
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71
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Amini H, Wang L, Shahbazi A. Effects of harvesting cell density, medium depth and environmental factors on biomass and lipid productivities of Chlorella vulgaris grown in swine wastewater. Chem Eng Sci 2016. [DOI: 10.1016/j.ces.2016.06.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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72
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Panis G, Carreon JR. Commercial astaxanthin production derived by green alga Haematococcus pluvialis : A microalgae process model and a techno-economic assessment all through production line. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.06.007] [Citation(s) in RCA: 254] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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73
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Goncalves EC, Wilkie AC, Kirst M, Rathinasabapathi B. Metabolic regulation of triacylglycerol accumulation in the green algae: identification of potential targets for engineering to improve oil yield. PLANT BIOTECHNOLOGY JOURNAL 2016; 14:1649-60. [PMID: 26801206 PMCID: PMC5066758 DOI: 10.1111/pbi.12523] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Revised: 11/13/2015] [Accepted: 11/25/2015] [Indexed: 05/03/2023]
Abstract
The great need for more sustainable alternatives to fossil fuels has increased our research interests in algal biofuels. Microalgal cells, characterized by high photosynthetic efficiency and rapid cell division, are an excellent source of neutral lipids as potential fuel stocks. Various stress factors, especially nutrient-starvation conditions, induce an increased formation of lipid bodies filled with triacylglycerol in these cells. Here we review our knowledge base on glycerolipid synthesis in the green algae with an emphasis on recent studies on carbon flux, redistribution of lipids under nutrient-limiting conditions and its regulation. We discuss the contributions and limitations of classical and novel approaches used to elucidate the algal triacylglycerol biosynthetic pathway and its regulatory network in green algae. Also discussed are gaps in knowledge and suggestions for much needed research both on the biology of triacylglycerol accumulation and possible avenues to engineer improved algal strains.
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Affiliation(s)
- Elton C Goncalves
- Plant Molecular and Cellular Biology Program, Horticultural Sciences Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA
| | - Ann C Wilkie
- Soil and Water Science Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA
| | - Matias Kirst
- School of Forestry, University of Florida, Gainesville, FL, USA
| | - Bala Rathinasabapathi
- Plant Molecular and Cellular Biology Program, Horticultural Sciences Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA
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Farooq W, Lee HU, Huh YS, Lee YC. Chlorella vulgaris cultivation with an additive of magnesium-aminoclay. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.05.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Patel B, Guo M, Izadpanah A, Shah N, Hellgardt K. A review on hydrothermal pre-treatment technologies and environmental profiles of algal biomass processing. BIORESOURCE TECHNOLOGY 2016; 199:288-299. [PMID: 26514623 DOI: 10.1016/j.biortech.2015.09.064] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 09/15/2015] [Accepted: 09/20/2015] [Indexed: 05/09/2023]
Abstract
The need for efficient and clean biomass conversion technologies has propelled Hydrothermal (HT) processing as a promising treatment option for biofuel production. This manuscript discussed its application for pre-treatment of microalgae biomass to solid (biochar), liquid (biocrude and biodiesel) and gaseous (hydrogen and methane) products via Hydrothermal Carbonisation (HTC), Hydrothermal Liquefaction (HTL) and Supercritical Water Gasification (SCWG) as well as the utility of HT water as an extraction medium and HT Hydrotreatment (HDT) of algal biocrude. In addition, the Solar Energy Retained in Fuel (SERF) using HT technologies is calculated and compared with benchmark biofuel. Lastly, the Life Cycle Assessment (LCA) discusses the limitation of the current state of art as well as introduction to new potential input categories to obtain a detailed environmental profile.
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Affiliation(s)
- Bhavish Patel
- Imperial College London, Dept. of Chemical Engineering, Exhibition Road, South Kensington, London SW7 2AZ, UK
| | - Miao Guo
- Imperial College London, Dept. of Chemical Engineering, Exhibition Road, South Kensington, London SW7 2AZ, UK
| | - Arash Izadpanah
- Imperial College London, Dept. of Chemical Engineering, Exhibition Road, South Kensington, London SW7 2AZ, UK
| | - Nilay Shah
- Imperial College London, Dept. of Chemical Engineering, Exhibition Road, South Kensington, London SW7 2AZ, UK
| | - Klaus Hellgardt
- Imperial College London, Dept. of Chemical Engineering, Exhibition Road, South Kensington, London SW7 2AZ, UK.
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