101
|
Viruela A, Murgui M, Gómez-Gil T, Durán F, Robles Á, Ruano MV, Ferrer J, Seco A. Water resource recovery by means of microalgae cultivation in outdoor photobioreactors using the effluent from an anaerobic membrane bioreactor fed with pre-treated sewage. BIORESOURCE TECHNOLOGY 2016; 218:447-454. [PMID: 27394990 DOI: 10.1016/j.biortech.2016.06.116] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/27/2016] [Accepted: 06/28/2016] [Indexed: 06/06/2023]
Abstract
With the aim of assessing the potential of microalgae cultivation for water resource recovery (WRR), the performance of three 0.55m(3) flat-plate photobioreactors (PBRs) was evaluated in terms of nutrient removal rate (NRR) and biomass production. The PBRs were operated outdoor (at ambient temperature and light intensity) using as growth media the nutrient-rich effluent from an AnMBR fed with pre-treated sewage. Solar irradiance was the most determining factor affecting NRR. Biomass productivity was significantly affected by temperatures below 20°C. The maximum biomass productivity (52.3mgVSS·L(-1)·d(-1)) and NRR (5.84mgNH4-N·L(-1)·d(-1) and 0.85mgPO4-P·L(-1)·d(-1)) were achieved at solar irradiance of 395μE·m(-2)·s(-1), temperature of 25.5°C, and HRT of 8days. Under these conditions, it was possible to comply with effluent nutrient standards (European Directive 91/271/CEE) when the nutrient content in the influent was in the range of 40-50mgN·L(-1) and 6-7mg P·L(-1).
Collapse
Affiliation(s)
- Alexandre Viruela
- Instituto de Ingeniería del Agua y Medio Ambiente, IIAMA, Universitat Politècnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain.
| | - Mónica Murgui
- Departament d'Enginyeria Química, Escola Tècnica Superior d'Enginyeria, Universitat de València, Avinguda de la Universitat s/n, 46100 Burjassot, Valencia, Spain.
| | - Tao Gómez-Gil
- Instituto de Ingeniería del Agua y Medio Ambiente, IIAMA, Universitat Politècnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain.
| | - Freddy Durán
- Instituto de Ingeniería del Agua y Medio Ambiente, IIAMA, Universitat Politècnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain.
| | - Ángel Robles
- Instituto de Ingeniería del Agua y Medio Ambiente, IIAMA, Universitat Politècnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain.
| | - María Victoria Ruano
- Departament d'Enginyeria Química, Escola Tècnica Superior d'Enginyeria, Universitat de València, Avinguda de la Universitat s/n, 46100 Burjassot, Valencia, Spain.
| | - José Ferrer
- Instituto de Ingeniería del Agua y Medio Ambiente, IIAMA, Universitat Politècnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain.
| | - Aurora Seco
- Departament d'Enginyeria Química, Escola Tècnica Superior d'Enginyeria, Universitat de València, Avinguda de la Universitat s/n, 46100 Burjassot, Valencia, Spain.
| |
Collapse
|
102
|
Ruiz-Martínez A, Serralta J, Seco A, Ferrer J. Modeling light and temperature influence on ammonium removal by Scenedesmus sp. under outdoor conditions. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 74:1964-1970. [PMID: 27789897 DOI: 10.2166/wst.2016.383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The ammonium removal rate of the microalga Scenedesmus sp. was studied under outdoor conditions. Microalgae were grown in a 500 L flat-plate photobioreactor and fed with the effluent of a submerged anaerobic membrane bioreactor. Temperature ranged between 9.5 °C and 32.5 °C and maximum light intensity was 1,860 μmol·m-2·s-1. A maximum specific ammonium removal rate of 3.71 mg NH4+-N·g TSS-1·h-1 was measured (at 22.6 °C and with a light intensity of 1,734 μmol·m-2·s-1). A mathematical model considering the influence of ammonium concentration, light and temperature was validated. The model successfully reproduced the observed values of ammonium removal rate obtained and it is thus presented as a useful tool for plant operation.
Collapse
Affiliation(s)
- Ana Ruiz-Martínez
- Universitat Politècnica de Valencia, Instituto de Ingeniería del Agua y Medio Ambiente (IIAMA), Camino de Vera s/n, 46022 Valencia, Spain E-mail:
| | - Joaquin Serralta
- Universitat Politècnica de Valencia, Instituto de Ingeniería del Agua y Medio Ambiente (IIAMA), Camino de Vera s/n, 46022 Valencia, Spain E-mail:
| | - Aurora Seco
- Universitat de València, Escola Tècnica Superior d'Enginyeria, Departament d'Enginyeria Química, Avinguda de la Universitat s/n., 46100 Burjassot, Valencia, Spain
| | - Jose Ferrer
- Universitat Politècnica de Valencia, Instituto de Ingeniería del Agua y Medio Ambiente (IIAMA), Camino de Vera s/n, 46022 Valencia, Spain E-mail:
| |
Collapse
|
103
|
Low temperature and Daphnia-associated infochemicals promote colony formation of Scenedesmus obliquus and its harvesting. Biotechnol Lett 2016; 39:85-90. [PMID: 27654822 DOI: 10.1007/s10529-016-2223-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Accepted: 09/13/2016] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To explore the combined effects of temperature and Daphnia-associated infochemicals on colony formation of Scenedesmus obliquus to faciliate harvesting the algal biomass. RESULTS A three-parameter modified Gaussian model fitted the changes of the number of cells per particle in S. obliquus induced by Daphnia culture filtrate well under any temperature. Decreases in temperature enhanced the induced-colony formation of Scenedesmus. The maximum colony size at 15-25 °C was significantly larger than those at 30-35 °C. An additional 1 or 2 days at low temperature was needed to reach the maximum colony size, which indicates the best harvest time for algal biomass. CONCLUSION Induced-colony formation of Scenedesmus by Daphnia culture filtrate at 15-25 °C is recommended to settle algal cells. This condition facilitates harvesting the biomass.
Collapse
|
104
|
Strategies for Lipid Production Improvement in Microalgae as a Biodiesel Feedstock. BIOMED RESEARCH INTERNATIONAL 2016; 2016:8792548. [PMID: 27725942 PMCID: PMC5048031 DOI: 10.1155/2016/8792548] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 07/20/2016] [Accepted: 07/25/2016] [Indexed: 01/04/2023]
Abstract
In response to the energy crisis, global warming, and climate changes, microalgae have received a great deal of attention as a biofuel feedstock. Due to a high lipid content in microalgal cells, microalgae present as a promising alternative source for the production of biodiesel. Environmental and culturing condition variations can alter lipid production as well as chemical compositions of microalgae. Therefore, application of the strategies to activate lipid accumulation opens the door for lipid overproduction in microalgae. Until now, many original studies regarding the approaches for enhanced microalgal lipid production have been reported in an effort to push forward the production of microalgal biodiesel. However, the current literature demonstrates fragmented information available regarding the strategies for lipid production improvement. From the systematic point of view, the review highlights the main approaches for microalgal lipid accumulation induction to expedite the application of microalgal biodiesel as an alternative to fossil diesel for sustainable environment. Of the several strategies discussed, the one that is most commonly applied is the design of nutrient (e.g., nitrogen, phosphorus, and sulfur) starvation or limitation. Other viable approaches such as light intensity, temperature, carbon dioxide, salinity stress, and metal influence can also achieve enhanced microalgal lipid production.
Collapse
|
105
|
Feng J, Guo Y, Zhang X, Wang G, Lv J, Liu Q, Xie S. Identification and characterization of a symbiotic alga from soil bryophyte for lipid profiles. Biol Open 2016; 5:1317-23. [PMID: 27543061 PMCID: PMC5051653 DOI: 10.1242/bio.019992] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A symbiotic alga was successfully isolated from the soil moss Entodon obtusatus found in the Guandi Mountains, Shanxi Province, China, and cultivated under axenic conditions. Morphological observations showed that the symbiotic alga was similar to Chlorococcum Based on phylogenetic analysis of 18S rRNA and rbcL genes and internal transcribed spacer (ITS) regions, Chlorococcum sp. GD was identified as Chlorococcum sphacosum The three data sets were congruent for those aspects of the topologies that were relatively robust, and differed for those parts of the topologies that were not. This strain was cultured in BG11 medium to test its growth and biodiesel properties. It produced a lipid content of nearly 40%, and achieved biomass concentration of 410 mg l(-1) and lipid productivity of 6.76 mg l(-1) day(-1), with favorable C16:0 (23.10%) and C18:1 (21.62%) fatty acid content. This alga appears to have potential for use in biodiesel production.
Collapse
Affiliation(s)
- Jia Feng
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Yuning Guo
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Xiujuan Zhang
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Guihua Wang
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Junping Lv
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Qi Liu
- School of Life Science, Shanxi University, Taiyuan 030006, China
| | - Shulian Xie
- School of Life Science, Shanxi University, Taiyuan 030006, China
| |
Collapse
|
106
|
Low-Décarie E, Fussmann GF, Dumbrell AJ, Bell G. Communities that thrive in extreme conditions captured from a freshwater lake. Biol Lett 2016; 12:20160562. [PMID: 27601726 PMCID: PMC5046937 DOI: 10.1098/rsbl.2016.0562] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 08/10/2016] [Indexed: 11/12/2022] Open
Abstract
Organisms that can grow in extreme conditions would be expected to be confined to extreme environments. However, we were able to capture highly productive communities of algae and bacteria capable of growing in acidic (pH 2), basic (pH 12) and saline (40 ppt) conditions from an ordinary freshwater lake. Microbial communities may thus include taxa that are highly productive in conditions that are far outside the range of conditions experienced in their host ecosystem. The organisms we captured were not obligate extremophiles, but were capable of growing in both extreme and benign conditions. The ability to grow in extreme conditions may thus be a common functional attribute in microbial communities.
Collapse
Affiliation(s)
| | - Gregor F Fussmann
- Department of Biology, McGill University, Montreal, Quebec, Canada H3A 1B1
| | - Alex J Dumbrell
- School of Biological Sciences, University of Essex, Colchester CO4 3SQ, UK
| | - Graham Bell
- Department of Biology, McGill University, Montreal, Quebec, Canada H3A 1B1
| |
Collapse
|
107
|
Chakraborty S, Mohanty D, Ghosh S, Das D. Improvement of lipid content of Chlorella minutissima MCC 5 for biodiesel production. J Biosci Bioeng 2016; 122:294-300. [DOI: 10.1016/j.jbiosc.2016.01.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Revised: 01/20/2016] [Accepted: 01/28/2016] [Indexed: 10/22/2022]
|
108
|
González-Garcinuño Á, Sánchez-Álvarez JM, Galán MA, Martin del Valle EM. Understanding and optimizing the addition of phytohormones in the culture of microalgae for lipid production. Biotechnol Prog 2016; 32:1203-1211. [DOI: 10.1002/btpr.2312] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 04/25/2016] [Indexed: 11/11/2022]
Affiliation(s)
| | - José M. Sánchez-Álvarez
- Dept. of Chemical Engineering; University of Salamanca. P/Los Caídos S/N; Salamanca 37008 Spain
| | - Miguel A. Galán
- Dept. of Chemical Engineering; University of Salamanca. P/Los Caídos S/N; Salamanca 37008 Spain
| | - Eva M. Martin del Valle
- Dept. of Chemical Engineering; University of Salamanca. P/Los Caídos S/N; Salamanca 37008 Spain
| |
Collapse
|
109
|
Effects of cultivation conditions on the production of soluble algal products (SAPs) of Scenedesmus sp. LX1. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.04.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
110
|
Wang YZ, Hallenbeck PC, Leite GB, Paranjape K, Huo DQ. Growth and lipid accumulation of indigenous algal strains under photoautotrophic and mixotrophic modes at low temperature. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.03.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
111
|
Zhao Z, Ma S, Li A, Liu P, Wang M. Effects of Trophic Modes, Carbon Sources, and Salinity on the Cell Growth and Lipid Accumulation of Tropic Ocean Oilgae Strain Desmodesmus sp. WC08. Appl Biochem Biotechnol 2016; 180:452-463. [DOI: 10.1007/s12010-016-2109-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 04/28/2016] [Indexed: 11/27/2022]
|
112
|
Minhas AK, Hodgson P, Barrow CJ, Adholeya A. A Review on the Assessment of Stress Conditions for Simultaneous Production of Microalgal Lipids and Carotenoids. Front Microbiol 2016; 7:546. [PMID: 27199903 PMCID: PMC4853371 DOI: 10.3389/fmicb.2016.00546] [Citation(s) in RCA: 189] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 04/04/2016] [Indexed: 11/22/2022] Open
Abstract
Microalgal species are potential resource of both biofuels and high-value metabolites, and their production is growth dependent. Growth parameters can be screened for the selection of novel microalgal species that produce molecules of interest. In this context our review confirms that, autotrophic and heterotrophic organisms have demonstrated a dual potential, namely the ability to produce lipids as well as value-added products (particularly carotenoids) under influence of various physico-chemical stresses on microalgae. Some species of microalgae can synthesize, besides some pigments, very-long-chain polyunsaturated fatty acids (VL-PUFA,>20C) such as docosahexaenoic acid and eicosapentaenoic acid, those have significant applications in food and health. Producing value-added by-products in addition to biofuels, fatty acid methyl esters (FAME), and lipids has the potential to improve microalgae-based biorefineries by employing either the autotrophic or the heterotrophic mode, which could be an offshoot of biotechnology. The review considers the potential of microalgae to produce a range of products and indicates future directions for developing suitable criteria for choosing novel isolates through bioprospecting large gene pool of microalga obtained from various habitats and climatic conditions.
Collapse
Affiliation(s)
- Amritpreet K. Minhas
- Biotechnology and Bioresources Division, TERI-Deakin Nanobiotechnology Centre, The Energy and Resources Institute, India Habitat CentreNew Delhi, India
| | - Peter Hodgson
- Institute for Frontier Materials, Deakin UniversityVictoria, VIC, Australia
| | - Colin J. Barrow
- School of Life and Environmental Sciences, Deakin UniversityVictoria, VIC, Australia
| | - Alok Adholeya
- Biotechnology and Bioresources Division, TERI-Deakin Nanobiotechnology Centre, The Energy and Resources Institute, India Habitat CentreNew Delhi, India
| |
Collapse
|
113
|
Characterization and classification of highly productive microalgae strains discovered for biofuel and bioproduct generation. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.01.007] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
114
|
Tan XB, Zhang YL, Yang LB, Chu HQ, Guo J. Outdoor cultures of Chlorella pyrenoidosa in the effluent of anaerobically digested activated sludge: The effects of pH and free ammonia. BIORESOURCE TECHNOLOGY 2016; 200:606-615. [PMID: 26547810 DOI: 10.1016/j.biortech.2015.10.095] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 10/27/2015] [Accepted: 10/29/2015] [Indexed: 06/05/2023]
Abstract
A freshwater algae Chlorella pyrenoidosa was cultured outdoors using anaerobically digested activated sludge effluent. The effects of pH variations were evaluated. The coupled pH variations and free ammonia toxicity significantly affected the algal growth, lipids accumulation and contamination control during every season. The free ammonia toxicity at high pH levels actually inhibited the algal growth. Compared to an optimal algal growth at a pH of 5.7-6.5, biomass productivity at a high pH of 8.3-8.8 was reduced by 67.15±6.98%, 54.39±6.42% and 83.63±5.71% in the spring, fall and summer, respectively. When the pH rose above 9.1-9.6, algae were unable to grow in the wastewater. However, high pH levels reduced contamination (e.g., bacteria and microalgae grazers) and triggered lipids accumulation in algal cells. These findings suggest that pH control strategies are essential for this type of algal wastewater system, where ammonia is the dominant nitrogen source.
Collapse
Affiliation(s)
- Xiao-Bo Tan
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Ya-Lei Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China.
| | - Li-Bin Yang
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Hua-Qiang Chu
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Jun Guo
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| |
Collapse
|
115
|
Vadiveloo A, Moheimani NR, Alghamedi R, Cosgrove JJ, Alameh K, Parlevliet D. Sustainable cultivation of microalgae by an insulated glazed glass plate photobioreactor. Biotechnol J 2015; 11:363-74. [DOI: 10.1002/biot.201500358] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Revised: 09/15/2015] [Accepted: 11/20/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Ashiwin Vadiveloo
- Algae R&D Centre, School of Veterinary and Life Sciences, Murdoch University; Murdoch Western Australia Australia
| | - Navid. R. Moheimani
- Algae R&D Centre, School of Veterinary and Life Sciences, Murdoch University; Murdoch Western Australia Australia
| | - Ramzy Alghamedi
- Electron Science Research Institute, Edith Cowan University; Joondalup Western Australia Australia
| | - Jeffrey J. Cosgrove
- Algae R&D Centre, School of Veterinary and Life Sciences, Murdoch University; Murdoch Western Australia Australia
| | - Kamal Alameh
- Electron Science Research Institute, Edith Cowan University; Joondalup Western Australia Australia
| | - David Parlevliet
- School of Engineering and Information Technology, Physics and Energy, Murdoch University; Murdoch Western Australia Australia
| |
Collapse
|
116
|
Fakhry EM, El Maghraby DM. Lipid accumulation in response to nitrogen limitation and variation of temperature in Nannochloropsis salina. BOTANICAL STUDIES 2015; 56:6. [PMID: 28510815 PMCID: PMC5432932 DOI: 10.1186/s40529-015-0085-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 03/05/2015] [Indexed: 05/18/2023]
Abstract
BACKGROUND This batch study deals with the relation between lipid as well as triglyceride contents in Nannochloropsis salina and variation in culture conditions such as nitrogen concentration and temperature. RESULTS The tested parameters caused reduction in growth expressed as cell count, optical density and dry weight, as well strongly involved in lipids and triglycerides accumulation and significantly affected the lipid productivity. At the beginning of the work, the concentration of nitrogen in the medium was reduced to three quarter, half and quarter of the original f2 medium while the temperature kept constant. After that, the optimal nitrogen concentration (quarter of the original media) giving high lipid yield was tested with different temperature degrees from 15 to 35°C with five degree intervals. Although the growth was insignificantly influenced, a considerable increase in lipid and triglyceride (56.1 and 15.1% of dry weight respectively) was observed when the concentration of nitrogen in the medium was reduced to the quarter. Moreover, 59.3% lipid and 17.1% triglyceride on the basis of dry weight were obtained by the combination of 25% nitrogen concentration and 30°C. Simple regressions recommended that the interaction effect of nitrogen limitation and temperature on lipid and triglyceride accumulation was not as fundamental as for nitrogen limitation stress. CONCLUSION The degree of nitrogen availability in the combination of temperature effect has been identified as the critical determinant for the maximal production of lipid in N. salina. Nevertheless, major advances in this field can be considered by studying more stresses techniques and genetic strategies.
Collapse
Affiliation(s)
- Eman M Fakhry
- Department of Botany and Microbiology, Faculty of Science, Alexandria University, Alexandria, 21511 Egypt
| | - Dahlia M El Maghraby
- Department of Botany and Microbiology, Faculty of Science, Alexandria University, Alexandria, 21511 Egypt
| |
Collapse
|
117
|
Tan L, Li S, Zhang X, Ma F. Cloning and functional analysis of Δ6-desaturase gene and its upstream region from Mortierella sp. AGED. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2015; 95:3077-3083. [PMID: 25504265 DOI: 10.1002/jsfa.7043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2014] [Revised: 12/04/2014] [Accepted: 12/07/2014] [Indexed: 06/04/2023]
Abstract
BACKGROUND Δ6-desaturase belonging to membrane-bound enzyme is a key enzyme involved in the synthesis of polyunsaturated fatty acids (PUFAs). This study aimed to clone and characterise Δ6-desaturase gene and its upstream regulatory region of Mortierella sp. AGED. RESULTS Glucose and soybean meal are best for lipid and arachidonic acid accumulation of Mortierella sp. AGED. A 1375-bp Δ6-desaturase gene AGfad6 which contains a 1275-bp open reading frame encoding 424 amino acids without signal peptide was cloned. The putative protein contained three conserved histidine-rich motifs and a conserved cytochrome b5 HPGG (H: Histine, P: Proline, G: Glycine, G: Glycine) motif, with a mass of 48.3 kDa and an isoelectric point of 5.96. AGfad6 was successfully expressed in Pichia pastoris GS115, which exerted the effect on converting linoleic acid to γ-linolenic acid. The 1712-bp upstream region contained basic transcriptional elements including TATA, GC and GATA box, putative target-binding sites for transcription factors such as TATA binding protein, transcription activator, CCAAT-enhancer-binding protein, activator protein 1, alcohol dehydrogenase gene regulator 1 and metabolic regulators p40x in fungi, stress-related elements including GT-1 (light-responsive, salicylic acid-inducible), stress response element, heat stress-responsive element, which might participate in regulation of PUFAs synthesis. CONCLUSION The present finding could enable us to understand the evolution and regulatory mechanism of Δ6-desaturase gene.
Collapse
Affiliation(s)
- Li Tan
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P.R. China
| | - Shue Li
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P.R. China
| | - Xiaoyu Zhang
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P.R. China
| | - Fuying Ma
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, P.R. China
| |
Collapse
|
118
|
Park S, Kim J, Yoon Y, Park Y, Lee T. Blending water- and nutrient-source wastewaters for cost-effective cultivation of high lipid content microalgal species Micractinium inermum NLP-F014. BIORESOURCE TECHNOLOGY 2015; 198:388-394. [PMID: 26409109 DOI: 10.1016/j.biortech.2015.09.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Revised: 09/04/2015] [Accepted: 09/05/2015] [Indexed: 06/05/2023]
Abstract
The possibility of utilizing blended wastewaters from different streams was investigated for cost-efficient microalgal cultivation. The influent of a domestic wastewater treatment plant and the liquid fertilizer from a swine wastewater treatment plant were selected as water- and nutrient-source wastewaters, respectively. The growth of Micractinium inermum NLP-F014 in the blended wastewater medium without any pretreatment was comparable to that in Bold's Basal Medium. The optimum blending ratio of 5-15% (vv(-1)) facilitated biomass production up to 5.7 g-dry cell weight (DCW) L(-1), and the maximum biomass productivity (1.03 g-DCWL(-1)d(-1)) was achieved after three days of cultivation. Nutrient depletion induced lipid accumulation in the cell up to 39.1% (ww(-1)) and the maximum lipid productivity was 0.19 g-FAMEL(-1)d(-1). These results suggest that blending water- and nutrient-source wastewaters at a proper ratio without pretreatment can significantly cut costs in microalgae cultivation for biodiesel production.
Collapse
Affiliation(s)
- Seonghwan Park
- Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil Geumjeong-gu, Busan 609-735, Republic of Korea
| | - Jeongmi Kim
- Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil Geumjeong-gu, Busan 609-735, Republic of Korea
| | - Youngjin Yoon
- Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil Geumjeong-gu, Busan 609-735, Republic of Korea
| | - Younghyun Park
- Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil Geumjeong-gu, Busan 609-735, Republic of Korea
| | - Taeho Lee
- Department of Civil and Environmental Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil Geumjeong-gu, Busan 609-735, Republic of Korea.
| |
Collapse
|
119
|
Tan XB, Yang LB, Zhang YL, Zhao FC, Chu HQ, Guo J. Chlorella pyrenoidosa cultivation in outdoors using the diluted anaerobically digested activated sludge. BIORESOURCE TECHNOLOGY 2015; 198:340-350. [PMID: 26407348 DOI: 10.1016/j.biortech.2015.09.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 09/11/2015] [Accepted: 09/13/2015] [Indexed: 06/05/2023]
Abstract
A freshwater green algae Chlorella pyrenoidosa (C. pyrenoidosa) was cultured in outdoors using the diluted anaerobically digested activated sludge (ADAS). The outdoors batch culture in every season showed that C. pyrenoidosa can grow normally under natural conditions in the diluted ADAS (STE/ADAS=1.5/1, 3/1 and 5/1, v/v). Seasonal changes of environmental conditions significantly affected biomass growth and nutrient removal. Optimal biomass growth and nutrient removal was achieved at STE/ADAS=1.5/1 during summer culture, harvesting a maximum biomass concentration of 1.97 ± 0.21 g/L, average biomass productivity of 291.52 ± 33.74 g/m(3)/day (maximum value of 573.10 ± 41.82) and average lipids productivity of 37.49 ± 5.26 g/m(3)/day (maximum value of 73.70 ± 9.75); simultaneously, the microalgae growth effectively removed nutrients from the wastewater, including 105.6 ± 17.1 mg CODCr/L/day, 36.8 ± 6.1mg N/L/day and 6.1 ± 1.1 mg P/L/day.
Collapse
Affiliation(s)
- Xiao-Bo Tan
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Li-Bin Yang
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Ya-Lei Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Fang-Chao Zhao
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Hua-Qiang Chu
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China.
| | - Jun Guo
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| |
Collapse
|
120
|
Vitova M, Bisova K, Kawano S, Zachleder V. Accumulation of energy reserves in algae: From cell cycles to biotechnological applications. Biotechnol Adv 2015; 33:1204-18. [DOI: 10.1016/j.biotechadv.2015.04.012] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 04/27/2015] [Accepted: 04/28/2015] [Indexed: 01/28/2023]
|
121
|
Sukkrom K, Bunnag B, Powtongsook S, Siangdung W, Pavasant P. Biomass and lipid enhancement inAnkistrodesmussp. cultured with reused and minimal nutrients media. Prep Biochem Biotechnol 2015; 46:467-73. [DOI: 10.1080/10826068.2015.1068805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
122
|
Surendhiran D, Vijay M, Sivaprakash B, Sirajunnisa A. Kinetic modeling of microalgal growth and lipid synthesis for biodiesel production. 3 Biotech 2015; 5:663-669. [PMID: 28324516 PMCID: PMC4569628 DOI: 10.1007/s13205-014-0264-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 10/21/2014] [Indexed: 11/21/2022] Open
Abstract
A mathematical modeling of microalgae biomass is an essential step to optimize the biomass and lipid production rate and to reduce the cost of microalgal biodiesel production system. In the present study, kinetic studies were carried out to describe the growth and neutral lipid production of two marine microalgae Chlorella salina and Nannochloropsis oculata under the nitrogen-repleted and -depleted conditions using logistic and Luedeking-Piret equations. This research paper provides the information on mathematically efficient procedure to predict suitable environment condition for biomass and lipid production. The predicted results were compared with experimental data, which showed that this model closely agreed with simulated results. From this investigation, it was found that nitrogen was an essential nutrient for algal growth, which increased under nitrogen-rich condition, whereas during nitrogen-limited condition some loss in growth was observed but with increased lipid content. Since metabolic changes occurred under nitrogen- depleted state, the protein and carbohydrate pathways were shifted to lipid biosynthesis.
Collapse
Affiliation(s)
- D Surendhiran
- Bioelectrochemical Laboratory, Department of Chemical Engineering, Annamalai University, Annamalai Nagar, 608002, Tamilnadu, India.
| | - M Vijay
- Bioelectrochemical Laboratory, Department of Chemical Engineering, Annamalai University, Annamalai Nagar, 608002, Tamilnadu, India
| | - B Sivaprakash
- Bioelectrochemical Laboratory, Department of Chemical Engineering, Annamalai University, Annamalai Nagar, 608002, Tamilnadu, India
| | - A Sirajunnisa
- Bioelectrochemical Laboratory, Department of Chemical Engineering, Annamalai University, Annamalai Nagar, 608002, Tamilnadu, India
| |
Collapse
|
123
|
Chu HQ, Tan XB, Zhang YL, Yang LB, Zhao FC, Guo J. Continuous cultivation of Chlorella pyrenoidosa using anaerobic digested starch processing wastewater in the outdoors. BIORESOURCE TECHNOLOGY 2015; 185:40-8. [PMID: 25746477 DOI: 10.1016/j.biortech.2015.02.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Revised: 02/03/2015] [Accepted: 02/07/2015] [Indexed: 05/05/2023]
Abstract
Microalgae cultivation using wastewater might be a suitable approach to support sustainable large-scale biomass production. Its compelling characteristics included the recycling of nutrients and water resources, reducing carbon emissions and harvesting available biomass. In outdoor batch and continuous cultures, Chlorella pyrenoidosa completely adapted to anaerobic digested starch processing wastewater and was the dominant microorganism in the photobioreactor. However, seasonal changes of environmental conditions significantly influenced biomass growth and lipid production. The long-term outdoor operation demonstrated that the biomass concentration and productivity in continuous operations at different hydraulic retention times (HRTs) can be successfully predicted using the kinetic growth parameters obtained from the batch culture. A moderate HRT (4days) in the summer provided the best microalgae and lipid production and achieved relatively high biomass concentrations of 1.29-1.62g/L, biomass productivities of 342.6±12.8mg/L/d and lipids productivities of 43.37±7.43mg/L/d.
Collapse
Affiliation(s)
- Hua-Qiang Chu
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Xiao-Bo Tan
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Ya-Lei Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China.
| | - Li-Bin Yang
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Fang-Chao Zhao
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Jun Guo
- State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze Water Environment for Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| |
Collapse
|
124
|
Temperature Effects on the Growth Rates and Photosynthetic Activities of Symbiodinium Cells. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2015. [DOI: 10.3390/jmse3020368] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
125
|
Krzemińska I, Nawrocka A, Piasecka A, Jagielski P, Tys J. Cultivation ofChlorella protothecoidesin photobioreactors: The combined impact of photoperiod and CO2concentration. Eng Life Sci 2015. [DOI: 10.1002/elsc.201400174] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Izabela Krzemińska
- Department of Physical Properties of Plant Materials; Institute of Agrophysics of Polish Academy of Sciences; Lublin Poland
| | - Agnieszka Nawrocka
- Department of Physical Properties of Plant Materials; Institute of Agrophysics of Polish Academy of Sciences; Lublin Poland
| | - Agata Piasecka
- Department of Physical Properties of Plant Materials; Institute of Agrophysics of Polish Academy of Sciences; Lublin Poland
| | - Paweł Jagielski
- Department of Clinical Biochemistry; Jagiellonian University Medical College; Kraków Poland
| | - Jerzy Tys
- Department of Physical Properties of Plant Materials; Institute of Agrophysics of Polish Academy of Sciences; Lublin Poland
| |
Collapse
|
126
|
Cabello J, Toledo-Cervantes A, Sánchez L, Revah S, Morales M. Effect of the temperature, pH and irradiance on the photosynthetic activity by Scenedesmus obtusiusculus under nitrogen replete and deplete conditions. BIORESOURCE TECHNOLOGY 2015; 181:128-35. [PMID: 25647022 DOI: 10.1016/j.biortech.2015.01.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 01/05/2015] [Accepted: 01/09/2015] [Indexed: 05/18/2023]
Abstract
This paper evaluates the effect of the irradiance, pH and temperature on the photosynthetic activity (PA) of Scenedesmus obtusiusculus under N-replete and N-deplete conditions through oxygen measurements. The highest PA values were 160 mgO2 gb(-1) h(-1) at 620 μmol m(-2) s(-1), 35 °C and pH of 8 under N-replete conditions and 3.3 mgO2 gb(-1) h(-1) at 100 μmol m(-2) s(-1), 28.5 °C and pH of 5.5 for N-deplete conditions. Those operation conditions were tested in a flat-panel photobioreactor. The biomass productivity was 0.97 gb L(-1) d(-1) under N-replete conditions with a photosynthetic efficiency (PE) of 4.4% yielding 0.85 gb mol photon(-1). Similar biomass productivity was obtained under N-deplete condition; and the lipid productivity was 0.34 gL L(-1) d(-1) with a PE of 7.8% yielding 0.39 gL mol photon(-1). The apparent activation and deactivation energies were 16.1 and 30 kcal mol(-1), and 11.9 and 15.3 kcal mol(-1), for N-replete and N-deplete conditions, respectively.
Collapse
Affiliation(s)
- Juan Cabello
- Doctorado en Biotecnología, Universidad Autónoma Metropolitana-Iztapalapa, Mexico
| | - Alma Toledo-Cervantes
- Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Mexico
| | - León Sánchez
- Doctorado en Biotecnología, Universidad Autónoma Metropolitana-Iztapalapa, Mexico
| | - Sergio Revah
- Departamento de Procesos y Tecnología, Universidad Autónoma Metropolitana-Cuajimalpa, Mexico
| | - Marcia Morales
- Departamento de Procesos y Tecnología, Universidad Autónoma Metropolitana-Cuajimalpa, Mexico.
| |
Collapse
|
127
|
Krujatz F, Lode A, Brüggemeier S, Schütz K, Kramer J, Bley T, Gelinsky M, Weber J. Green bioprinting: Viability and growth analysis of microalgae immobilized in 3D-plotted hydrogels versus suspension cultures. Eng Life Sci 2015. [DOI: 10.1002/elsc.201400131] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
- Felix Krujatz
- Institute of Food Technology and Bioprocess Engineering; TU Dresden; Dresden Germany
| | - Anja Lode
- Centre for Translational Bone, Joint and Soft Tissue Research; University Hospital and Faculty of Medicine Carl Gustav Carus, TU Dresden; Dresden Germany
| | - Sophie Brüggemeier
- Centre for Translational Bone, Joint and Soft Tissue Research; University Hospital and Faculty of Medicine Carl Gustav Carus, TU Dresden; Dresden Germany
| | - Kathleen Schütz
- Centre for Translational Bone, Joint and Soft Tissue Research; University Hospital and Faculty of Medicine Carl Gustav Carus, TU Dresden; Dresden Germany
| | - Julius Kramer
- Institute of Food Technology and Bioprocess Engineering; TU Dresden; Dresden Germany
| | - Thomas Bley
- Institute of Food Technology and Bioprocess Engineering; TU Dresden; Dresden Germany
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research; University Hospital and Faculty of Medicine Carl Gustav Carus, TU Dresden; Dresden Germany
| | - Jost Weber
- Institute of Food Technology and Bioprocess Engineering; TU Dresden; Dresden Germany
| |
Collapse
|
128
|
Subcritical Water Extraction of Bioactive Compounds from Plants and Algae: Applications in Pharmaceutical and Food Ingredients. FOOD ENGINEERING REVIEWS 2015. [DOI: 10.1007/s12393-015-9119-x] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
129
|
Biomass, lipid productivity and fatty acid composition of fresh water microalga Rhopalosolen saccatus cultivated under phosphorous limited conditions. ALGAL RES 2015. [DOI: 10.1016/j.algal.2015.01.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
130
|
Chokshi K, Pancha I, Trivedi K, George B, Maurya R, Ghosh A, Mishra S. Biofuel potential of the newly isolated microalgae Acutodesmus dimorphus under temperature induced oxidative stress conditions. BIORESOURCE TECHNOLOGY 2015; 180:162-71. [PMID: 25600013 DOI: 10.1016/j.biortech.2014.12.102] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 12/29/2014] [Accepted: 12/30/2014] [Indexed: 05/08/2023]
Abstract
Lack of control over temperature is one of the major issues in large scale cultivation of microalgae. Therefore, it is important to evaluate the effects of cultivation temperature on the growth and physiology of microalgae. In the present study, freshwater microalgae Acutodesmus dimorphus was grown at different temperature in continuous and two stage cultivation. Results revealed that during continuous cultivation A. dimorphus grows better at 35°C than at 25°C and 38°C. At 35°C, A. dimorphus produced 22.7% lipid (containing 59% neutral lipid) and 33.7% carbohydrate along with 68% increase in biomass productivity (23.53mg/L/day) compared to 25°C grown culture. Stress biomarkers like reactive oxygen species, antioxidant enzymes like catalase and ascorbate peroxidase and lipid peroxidation were also lowest in 35°C grown culture which reveals that A. dimorphus is well acclimatized at 35°C.
Collapse
Affiliation(s)
- Kaumeel Chokshi
- Discipline of Salt & Marine Chemicals, CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India; Academy of Scientific & Innovative Research (AcSIR), CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
| | - Imran Pancha
- Discipline of Salt & Marine Chemicals, CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India; Academy of Scientific & Innovative Research (AcSIR), CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
| | - Khanjan Trivedi
- Academy of Scientific & Innovative Research (AcSIR), CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India; Discipline of Wasteland Research, CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
| | - Basil George
- Discipline of Salt & Marine Chemicals, CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
| | - Rahulkumar Maurya
- Discipline of Salt & Marine Chemicals, CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India; Academy of Scientific & Innovative Research (AcSIR), CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
| | - Arup Ghosh
- Academy of Scientific & Innovative Research (AcSIR), CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India; Discipline of Wasteland Research, CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
| | - Sandhya Mishra
- Discipline of Salt & Marine Chemicals, CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India; Academy of Scientific & Innovative Research (AcSIR), CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India.
| |
Collapse
|
131
|
Anthony J, Rangamaran VR, Gopal D, Shivasankarasubbiah KT, Thilagam MLJ, Peter Dhassiah M, Padinjattayil DSM, Valsalan VN, Manambrakat V, Dakshinamurthy S, Thirunavukkarasu S, Ramalingam K. Ultraviolet and 5'fluorodeoxyuridine induced random mutagenesis in Chlorella vulgaris and its impact on fatty acid profile: a new insight on lipid-metabolizing genes and structural characterization of related proteins. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2015; 17:66-80. [PMID: 25189135 DOI: 10.1007/s10126-014-9597-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 07/19/2014] [Indexed: 06/03/2023]
Abstract
The present study was aimed at randomly mutating the microalga, Chlorella vulgaris, in order to alter its cellular behaviour towards increased lipid production for efficient biodiesel production from algal biomass. Individual mutants from ultraviolet light (UV-1 (30 s exposure), UV-2 (60 s exposure) and UV-3 (90 s exposure)) and 5'fluorodeoxyuridine (5'FDU-1 (0.25 mM) and 5'FDU-2 (0.50 mM)) exposed cells were identified to explore an alternative method for lipid enhancement. A marginally significant decrease in biomass in the UV mutants; marked increase in the lipid content in UV-2 and 5'FDU-1 mutants; significant increase in saturated fatty acids level, especially in UV-2 mutant; insignificant increase in lipid production when these mutants were subjected to an additional stress of nitrogen starvation and predominantly enhanced level of unsaturated fatty acids in all the strains except UV-2 were noted. Chloroplast ultrastructural alterations and defective biosynthesis of chloroplast specific lipid constituents were observed in the mutants. Modelling of three-dimensional structures of acetyl coA carboxylase (ACCase), omega-6, plastid delta-12 and microsomal delta-12 fatty acid desaturases for the first time and ligand-interaction studies greatly substantiated our findings. A replacement of leucine by a serine residue in the acetyl coA carboxylase gene of UV-2 mutant suggests the reason behind lipid enhancement in UV-2 mutant. Higher activity of ACCase in UV-2 and 5'FDU-1 strongly proves the functional consequences of gene mutation to lipid production. In conclusion, algal mutants exhibited significant impact on biodiesel production through structural alterations in the lipid-metabolizing genes, thereby enhancing lipid production and saturated fatty acid levels.
Collapse
Affiliation(s)
- Josephine Anthony
- Marine Biotechnology Division, ESSO-National Institute of Ocean Technology, Ministry of Earth Sciences, Government of India, Pallikaranai, Chennai, 600 100, India,
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
132
|
González-Garcinuño Á, Tabernero A, Sánchez-Álvarez JM, Martin Del Valle EM, Galán MA. Effect of nitrogen source on growth and lipid accumulation in Scenedesmus abundans and Chlorella ellipsoidea. BIORESOURCE TECHNOLOGY 2014; 173:334-341. [PMID: 25310870 DOI: 10.1016/j.biortech.2014.09.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 09/03/2014] [Accepted: 09/06/2014] [Indexed: 06/04/2023]
Abstract
Discovering microalgae strains containing a high lipid yield and adequate fatty acid composition is becoming a crucial fact in algae-oil factories. In this study, two unknown strains, named Scenedesmus abundans and Chlorella ellipsoidea, have been tested for their response to different nitrogen sources, in order to determine its influence in the production of lipids. For S. abundans, autotrophic culture with ammonium nitrate offers the maximum lipid yield, obtaining up to 3.55 mg L(-1) d(-1). For C. ellipsoidea, heterotrophic culture with ammonium nitrate has been shown to be the best condition, reaching a lipid production of 9.27 mg L(-1) d(-1). Moreover, fatty acid composition obtained from these cultures meets international biodiesel standards with an important amount of C18:1, achieving 70% of total fatty acids and thus representing a potential use of these two strains at an industrial scale.
Collapse
Affiliation(s)
- Álvaro González-Garcinuño
- Department of Chemical Engineering, University of Salamanca, P/Los Caídos s/n, Salamanca 37008, Spain
| | - Antonio Tabernero
- Department of Chemical Engineering, University of Salamanca, P/Los Caídos s/n, Salamanca 37008, Spain
| | - José Ma Sánchez-Álvarez
- Department of Chemical Engineering, University of Salamanca, P/Los Caídos s/n, Salamanca 37008, Spain
| | - Eva M Martin Del Valle
- Department of Chemical Engineering, University of Salamanca, P/Los Caídos s/n, Salamanca 37008, Spain.
| | - Miguel A Galán
- Department of Chemical Engineering, University of Salamanca, P/Los Caídos s/n, Salamanca 37008, Spain
| |
Collapse
|
133
|
Isolation and Characterization of New Temperature Tolerant Microalgal Strains for Biomass Production. ENERGIES 2014. [DOI: 10.3390/en7127847] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
134
|
Zhang C, Zhang Y, Zhuang B, Zhou X. Strategic enhancement of algal biomass, nutrient uptake and lipid through statistical optimization of nutrient supplementation in coupling Scenedesmus obliquus-like microalgae cultivation and municipal wastewater treatment. BIORESOURCE TECHNOLOGY 2014; 171:71-79. [PMID: 25189511 DOI: 10.1016/j.biortech.2014.07.060] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 07/14/2014] [Accepted: 07/16/2014] [Indexed: 06/03/2023]
Abstract
Supplementing proper nutrients could be a strategy for enhancing algal biomass, nutrients uptake and lipid accumulation in the coupling system of biodiesel production and municipal wastewater treatment. However, there is scant information reporting systematic studies on screening and optimization of key supplemented components in the coupling system. The main factors were scientifically screened and optimized using statistical methods. Plackett-Burman design (PBD) was used to explore the roles of added nutrient factors, whereas response surface methodology (RSM) was employed for optimization. Based on the statistic analysis, the optimum added TP and FeCl3·6H2O concentrations for Scenedesmus obliquus-like microalgae growth, nutrients uptake and lipid accumulation were 4.41 mg L(-1) and 6.48 mg L(-1), respectively. The corresponding biomass, lipid content and TN/TP removal efficiency were 1.46 g L(-1), 36.26% and >99%. The predicted value agreed well with the experimental value, as determined by validation experiments, which confirmed the availability and accuracy of the model.
Collapse
Affiliation(s)
- Chunmin Zhang
- Key Laboratory of Yangtze Water Environment of Ministry of Education, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
| | - Yalei Zhang
- Key Laboratory of Yangtze Water Environment of Ministry of Education, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China.
| | - Baolu Zhuang
- Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, China
| | - Xuefei Zhou
- Key Laboratory of Yangtze Water Environment of Ministry of Education, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
| |
Collapse
|
135
|
Ho SH, Ye X, Hasunuma T, Chang JS, Kondo A. Perspectives on engineering strategies for improving biofuel production from microalgae--a critical review. Biotechnol Adv 2014; 32:1448-59. [PMID: 25285758 DOI: 10.1016/j.biotechadv.2014.09.002] [Citation(s) in RCA: 145] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 09/18/2014] [Accepted: 09/19/2014] [Indexed: 10/24/2022]
Abstract
Although the potential for biofuel production from microalgae via photosynthesis has been intensively investigated, information on the selection of a suitable operation strategy for microalgae-based biofuel production is lacking. Many published reports describe competitive strains and optimal culture conditions for use in biofuel production; however, the major impediment to further improvements is the absence of effective engineering strategies for microalgae cultivation and biofuel production. This comprehensive review discusses recent advances in understanding the effects of major environmental stresses and the characteristics of various engineering operation strategies on the production of biofuels (mainly biodiesel and bioethanol) using microalgae. The performances of microalgae-based biofuel-producing systems under various environmental stresses (i.e., irradiance, temperature, pH, nitrogen depletion, and salinity) and cultivation strategies (i.e., fed-batch, semi-continuous, continuous, two-stage, and salinity-gradient) are compared. The reasons for variations in performance and the underlying theories of the various production strategies are also critically discussed. The aim of this review is to provide useful information to facilitate development of innovative and feasible operation technologies for effectively increasing the commercial viability of microalgae-based biofuel production.
Collapse
Affiliation(s)
- Shih-Hsin Ho
- Organization of Advanced Science and Technology, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan
| | - Xiaoting Ye
- Organization of Advanced Science and Technology, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan
| | - Tomohisa Hasunuma
- Organization of Advanced Science and Technology, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan
| | - Jo-Shu Chang
- 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; Center for Bioscience and Biotechnology, National Cheng Kung University, Tainan 701, Taiwan.
| | - Akihiko Kondo
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan; Biomass Engineering Program, RIKEN, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan.
| |
Collapse
|
136
|
Kumar K, Dasgupta CN, Das D. Cell growth kinetics of Chlorella sorokiniana and nutritional values of its biomass. BIORESOURCE TECHNOLOGY 2014; 167:358-366. [PMID: 24997380 DOI: 10.1016/j.biortech.2014.05.118] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Revised: 05/29/2014] [Accepted: 05/31/2014] [Indexed: 06/03/2023]
Abstract
The present study investigates the effects of different physico-chemical parameters for the growth of Chlorella sorokiniana and subsequently determination of nutritional values of its biomass. Most suitable temperature, light intensity, pH, and acetic acid concentration were 30°C, 100 μmol m(-2)s(-1), pH 7.5, and 34.8mM, respectively for the growth of this microorganism. Arrhenius growth activation energy, Ea was calculated as 7.08 kJ mol(-1). Monod kinetics constants: maximum specific growth rate (μ max) and substrate (acetic acid) affinity coefficient (Ks) were determined as 0.1 ± 0.01 h(-1) and 76 ± 8 mg L(-1), respectively. Stoichiometric analysis revealed the capture of 1.83 g CO2 and release of 1.9 g O2 for 1g algal biomass synthesis. Algal biomass of C. sorokiniana was found rich in protein and several important minerals such as Mg, Ca, and Fe. Astaxanthin and β-carotene were extracted and quantified using high performance liquid chromatography.
Collapse
Affiliation(s)
- Kanhaiya Kumar
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Chitralekha Nag Dasgupta
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Debabrata Das
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India.
| |
Collapse
|
137
|
Wang HY, Bluck D, Van Wie BJ. Conversion of microalgae to jet fuel: process design and simulation. BIORESOURCE TECHNOLOGY 2014; 167:349-357. [PMID: 24997379 DOI: 10.1016/j.biortech.2014.05.092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 05/23/2014] [Accepted: 05/24/2014] [Indexed: 06/03/2023]
Abstract
Microalgae's aquatic, non-edible, highly genetically modifiable nature and fast growth rate are considered ideal for biomass conversion to liquid fuels providing promise for future shortages in fossil fuels and for reducing greenhouse gas and pollutant emissions from combustion. We demonstrate adaptability of PRO/II software by simulating a microalgae photo-bio-reactor and thermolysis with fixed conversion isothermal reactors adding a heat exchanger for thermolysis. We model a cooling tower and gas floatation with zero-duty flash drums adding solids removal for floatation. Properties data are from PRO/II's thermodynamic data manager. Hydrotreating is analyzed within PRO/II's case study option, made subject to Jet B fuel constraints, and we determine an optimal 6.8% bioleum bypass ratio, 230°C hydrotreater temperature, and 20:1 bottoms to overhead distillation ratio. Process economic feasibility occurs if cheap CO2, H2O and nutrient resources are available, along with solar energy and energy from byproduct combustion, and hydrotreater H2 from product reforming.
Collapse
Affiliation(s)
- Hui-Yuan Wang
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA 99164, United States
| | - David Bluck
- Schneider Electric S.A., Lake Forest, CA 92630, United States
| | - Bernard J Van Wie
- The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA 99164, United States.
| |
Collapse
|
138
|
Ma X, Zheng H, Huang H, Liu Y, Ruan R. Effects of temperature and substrate concentration on lipid production by Chlorella vulgaris from enzymatic hydrolysates of lipid-extracted microalgal biomass residues (LMBRs). Appl Biochem Biotechnol 2014; 174:1631-1650. [PMID: 25138600 DOI: 10.1007/s12010-014-1134-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Accepted: 08/01/2014] [Indexed: 11/29/2022]
Abstract
The enzymatic hydrolysates of the lipid-extracted microalgal biomass residues (LMBRs) from biodiesel production were evaluated as nutritional sources for the mixotrophic growth of Chlorella vulgaris and lipid production at different temperature levels and substrate concentrations. Both parameters had a significant effect on cell growth and lipid production. It was observed that C. vulgaris could grow mixotrophically in a wide range of temperatures (20∼35 °C). The optimal temperature for cell growth and lipid accumulation of the mixotrophic growth of C. vulgaris was between 25 and 30 °C. The neutral lipids of the culture at 25 °C accounted for as much as 82 % of the total lipid content in the microalga at culture day 8. Fatty acid composition analysis showed that the increase of saturated fatty acids was proportional to the increase in temperature. The maximum biomass concentration of 4.83 g/L and the maximum lipid productivity of 164 mg/L/day were obtained at an initial total sugar concentration of 10 g/L and an initial total concentration of amino acids of 1.0 g/L but decreased at lower and higher substrate concentrations. The present results show that LMBRS could be utilized by the mixotrophic growth of C. vulgaris for microalgal lipid production under the optimum temperature and substrate concentration.
Collapse
Affiliation(s)
- Xiaochen Ma
- Center for Biorefining, Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave, St. Paul, MN, 55108, USA
| | - Hongli Zheng
- MOE Biomass Energy Research Center and State Key Laboratory of Food Science, Nanchang University, Nanchang, 330047, Jiangxi, People's Republic of China
| | - He Huang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, No. 5 Xinmofan Road, Nanjing, 210009, People's Republic of China
| | - Yuhuan Liu
- MOE Biomass Energy Research Center and State Key Laboratory of Food Science, Nanchang University, Nanchang, 330047, Jiangxi, People's Republic of China
| | - Roger Ruan
- Center for Biorefining, Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave, St. Paul, MN, 55108, USA. .,MOE Biomass Energy Research Center and State Key Laboratory of Food Science, Nanchang University, Nanchang, 330047, Jiangxi, People's Republic of China.
| |
Collapse
|
139
|
Dempo Y, Ohta E, Nakayama Y, Bamba T, Fukusaki E. Molar-based targeted metabolic profiling of cyanobacterial strains with potential for biological production. Metabolites 2014; 4:499-516. [PMID: 24957038 PMCID: PMC4101518 DOI: 10.3390/metabo4020499] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 06/05/2014] [Accepted: 06/12/2014] [Indexed: 11/28/2022] Open
Abstract
Recently, cyanobacteria have become one of the most attractive hosts for biochemical production due to its high proliferative ability and ease of genetic manipulation. Several researches aimed at biological production using modified cyanobacteria have been reported previously. However, to improve the yield of bioproducts, a thorough understanding of the intercellular metabolism of cyanobacteria is necessary. Metabolic profiling techniques have proven to be powerful tools for monitoring cellular metabolism of various organisms and can be applied to elucidate the details of cyanobacterial metabolism. In this study, we constructed a metabolic profiling method for cyanobacteria using 13C-labeled cell extracts as internal standards. Using this method, absolute concentrations of 84 metabolites were successfully determined in three cyanobacterial strains which are commonly used as background strains for metabolic engineering. By comparing the differences in basic metabolic potentials of the three cyanobacterial strains, we found a well-correlated relationship between intracellular energy state and growth in cyanobacteria. By integrating our results with the previously reported biological production pathways in cyanobacteria, we found putative limiting step of carbon flux. The information obtained from this study will not only help gain insights in cyanobacterial physiology but also serve as a foundation for future metabolic engineering studies using cyanobacteria.
Collapse
Affiliation(s)
- Yudai Dempo
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
| | - Erika Ohta
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
| | - Yasumune Nakayama
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
| | - Takeshi Bamba
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
| | - Eiichiro Fukusaki
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
| |
Collapse
|
140
|
Feng P, Deng Z, Hu Z, Wang Z, Fan L. Characterization of Chlorococcum pamirum as a potential biodiesel feedstock. BIORESOURCE TECHNOLOGY 2014; 162:115-122. [PMID: 24747389 DOI: 10.1016/j.biortech.2014.03.076] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 03/11/2014] [Accepted: 03/15/2014] [Indexed: 06/03/2023]
Abstract
To evaluate the potential of Chlorococcum pamirum for producing biodiesel, the effects of nitrogen, phosphate, initial cell concentrations and NaCl on lipid accumulation and growth were studied. The highest specific growth rate (μ(max)), biomass productivity and lipid content achieved was 1.888 d(-1), 350.1 mg L(-1) day(-1), and 64.9%, respectively. Under nitrogen-deficient condition, the cells accumulated lipids faster at low initial cell concentration. Additional NaCl to nitrogen-deficient media accelerated the lipid accumulation. When adding 10 g L(-1) NaCl to nitrogen-deficient media, the lipid content and productivity of cells cultured outdoors with high initial cell concentration increased from 38.2% and 153 mg L(-1) day(-1) to 54.3% and 192 mg L(-1) day(-1) respectively. Moreover, NaCl enhanced the saturated fatty acids content from 56.40% to 73.41% of total fatty acids. The results show that C. pamirum is a promising organism for biofuel production.
Collapse
Affiliation(s)
- Pingzhong Feng
- Microalgae Laboratory, School of Resource & Environmental Engineering, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei University of Technology, Wuhan 430068, China; Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Algaen Corporation, 925 West Northwest Blvd., Winston-Salem, NC 27101, USA
| | - Zhongyang Deng
- Microalgae Laboratory, School of Resource & Environmental Engineering, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei University of Technology, Wuhan 430068, China
| | - Zhengyu Hu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, China
| | - Zhongming Wang
- Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Lu Fan
- Microalgae Laboratory, School of Resource & Environmental Engineering, Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, Hubei University of Technology, Wuhan 430068, China; Algaen Corporation, 925 West Northwest Blvd., Winston-Salem, NC 27101, USA.
| |
Collapse
|
141
|
Song M, Pei H, Hu W, Zhang S, Ma G, Han L, Ji Y. Identification and characterization of a freshwater microalga Scenedesmus SDEC-8 for nutrient removal and biodiesel production. BIORESOURCE TECHNOLOGY 2014; 162:129-135. [PMID: 24747391 DOI: 10.1016/j.biortech.2014.03.135] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Revised: 03/21/2014] [Accepted: 03/24/2014] [Indexed: 06/03/2023]
Abstract
The selection of the right strains is of fundamental important to the success of the algae-based oil industry. From the six newly isolated microalgae strains tested for growth, fatty acid methyl ester (FAME) profiles and biodiesel properties, Scenedesmus SDEC-8, with favorable C16:0 fatty acids (73.43%), showed the best combined results. Then, morphological and molecular identification were examined. From the three wastewaters samples, Scenedesmus SDEC-8 showed good ability to yield oil and remove nutrients, which were comparable with other reports. In b artificial wastewater (TN 40 mg L(-1), TP 8 mg L(-1)), Scenedesmus SDEC-8 achieved the highest value of lipid productivity (53.84 mg L(-1) d(-1)), MUFA content (35.35%) and total FAME content (59.57±0.02 mg g(-1) DW), besides higher removal efficiencies of TN (99.18%) and TP (98.86%) helped effluent directly discharge and smaller dilution factor of N, P (3.3 and 9) which was good for lessening water utilization.
Collapse
Affiliation(s)
- Mingming Song
- School of Environmental Science and Engineering, Shandong University, 27 Shanda Nan Road, Jinan 250100, China
| | - Haiyan Pei
- School of Environmental Science and Engineering, Shandong University, 27 Shanda Nan Road, Jinan 250100, China; Shandong Provincial Engineering Centre on Environmental Science and Technology, 17923 Jingshi Road, Jinan 250061, China.
| | - Wenrong Hu
- School of Environmental Science and Engineering, Shandong University, 27 Shanda Nan Road, Jinan 250100, China; Shandong Provincial Engineering Centre on Environmental Science and Technology, 17923 Jingshi Road, Jinan 250061, China
| | - Shuo Zhang
- School of Environmental Science and Engineering, Shandong University, 27 Shanda Nan Road, Jinan 250100, China
| | - Guixia Ma
- School of Environmental Science and Engineering, Shandong University, 27 Shanda Nan Road, Jinan 250100, China
| | - Lin Han
- School of Environmental Science and Engineering, Shandong University, 27 Shanda Nan Road, Jinan 250100, China
| | - Yan Ji
- School of Environmental Science and Engineering, Shandong University, 27 Shanda Nan Road, Jinan 250100, China
| |
Collapse
|
142
|
Balan R, Suraishkumar GK. UVA-induced reset of hydroxyl radical ultradian rhythm improves temporal lipid production in Chlorella vulgaris. Biotechnol Prog 2014; 30:673-80. [PMID: 24692289 DOI: 10.1002/btpr.1909] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 03/12/2014] [Indexed: 11/11/2022]
Abstract
We report for the first time that the endogenous, pseudo-steady-state, specific intracellular levels of the hydroxyl radical (si-OH) oscillate in an ultradian fashion (model system: the microalga, Chlorella vulgaris), and also characterize the various rhythm parameters. The ultradian rhythm in the endogenous levels of the si-OH occurred with an approximately 6 h period in the daily cycle of light and darkness. Further, we expected that the rhythm reset to a shorter period could rapidly switch the cellular redox states that could favor lipid accumulation. We reset the endogenous rhythm through entrainment with UVA radiation, and generated two new ultradian rhythms with periods of approximately 2.97 h and 3.8 h in the light phase and dark phase, respectively. The reset increased the window of maximum lipid accumulation from 6 h to 12 h concomitant with the onset of the ultradian rhythms. Further, the saturated fatty acid content increased approximately to 80% of total lipid content, corresponding to the peak maxima of the hydroxyl radical levels in the reset rhythm.
Collapse
Affiliation(s)
- Ranjini Balan
- Dept. of Biotechnology, Indian Inst. of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | | |
Collapse
|
143
|
Yilancioglu K, Cokol M, Pastirmaci I, Erman B, Cetiner S. Oxidative stress is a mediator for increased lipid accumulation in a newly isolated Dunaliella salina strain. PLoS One 2014; 9:e91957. [PMID: 24651514 PMCID: PMC3961284 DOI: 10.1371/journal.pone.0091957] [Citation(s) in RCA: 158] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 02/17/2014] [Indexed: 01/08/2023] Open
Abstract
Green algae offer sustainable, clean and eco-friendly energy resource. However, production efficiency needs to be improved. Increasing cellular lipid levels by nitrogen depletion is one of the most studied strategies. Despite this, the underlying physiological and biochemical mechanisms of this response have not been well defined. Algae species adapted to hypersaline conditions can be cultivated in salty waters which are not useful for agriculture or consumption. Due to their inherent extreme cultivation conditions, use of hypersaline algae species is better suited for avoiding culture contamination issues. In this study, we identified a new halophilic Dunaliella salina strain by using 18S ribosomal RNA gene sequencing. We found that growth and biomass productivities of this strain were directly related to nitrogen levels, as the highest biomass concentration under 0.05 mM or 5 mM nitrogen regimes were 495 mg/l and 1409 mg/l, respectively. We also confirmed that nitrogen limitation increased cellular lipid content up to 35% under 0.05 mM nitrogen concentration. In order to gain insight into the mechanisms of this phenomenon, we applied fluorometric, flow cytometric and spectrophotometric methods to measure oxidative stress and enzymatic defence mechanisms. Under nitrogen depleted cultivation conditions, we observed increased lipid peroxidation by measuring an important oxidative stress marker, malondialdehyde and enhanced activation of catalase, ascorbate peroxidase and superoxide dismutase antioxidant enzymes. These observations indicated that oxidative stress is accompanied by increased lipid content in the green alga. In addition, we also showed that at optimum cultivation conditions, inducing oxidative stress by application of exogenous H2O2 leads to increased cellular lipid content up to 44% when compared with non-treated control groups. Our results support that oxidative stress and lipid overproduction are linked. Importantly, these results also suggest that oxidative stress mediates lipid accumulation. Understanding such relationships may provide guidance for efficient production of algal biodiesels.
Collapse
Affiliation(s)
- Kaan Yilancioglu
- Faculty of Engineering and Natural Sciences, Sabanci University, Orhanlı, Istanbul, Turkey
| | - Murat Cokol
- Faculty of Engineering and Natural Sciences, Sabanci University, Orhanlı, Istanbul, Turkey
- Sabanci University Nanotechnology Research and Application Center, Orhanlı, Istanbul, Turkey
| | - Inanc Pastirmaci
- Faculty of Engineering and Natural Sciences, Sabanci University, Orhanlı, Istanbul, Turkey
| | - Batu Erman
- Faculty of Engineering and Natural Sciences, Sabanci University, Orhanlı, Istanbul, Turkey
| | - Selim Cetiner
- Faculty of Engineering and Natural Sciences, Sabanci University, Orhanlı, Istanbul, Turkey
- * E-mail:
| |
Collapse
|
144
|
Pegallapati AK, Nirmalakhandan N, Dungan B, Holguin FO, Schaub T. Evaluation of internally illuminated photobioreactor for improving energy ratio. J Biosci Bioeng 2014; 117:92-8. [DOI: 10.1016/j.jbiosc.2013.06.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 06/18/2013] [Accepted: 06/20/2013] [Indexed: 11/27/2022]
|
145
|
Balan R, Suraishkumar GK. Simultaneous increases in specific growth rate and specific lipid content ofChlorella vulgaristhrough UV-induced reactive species. Biotechnol Prog 2013; 30:291-9. [DOI: 10.1002/btpr.1854] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 11/05/2013] [Indexed: 11/12/2022]
Affiliation(s)
- Ranjini Balan
- Dept. of Biotechnology; Indian Inst. of Technology Madras; Chennai 600036 Tamil Nadu India
| | - G. K. Suraishkumar
- Dept. of Biotechnology; Indian Inst. of Technology Madras; Chennai 600036 Tamil Nadu India
| |
Collapse
|
146
|
Kirrolia A, Bishnoi NR, Singh R. Response surface methodology as a decision-making tool for optimization of culture conditions of green microalgae Chlorella spp. for biodiesel production. ANN MICROBIOL 2013. [DOI: 10.1007/s13213-013-0752-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
|
147
|
Park YT, Lee H, Yun HS, Song KG, Yeom SH, Choi J. Removal of metal from acid mine drainage using a hybrid system including a pipes inserted microalgae reactor. BIORESOURCE TECHNOLOGY 2013; 150:242-248. [PMID: 24177157 DOI: 10.1016/j.biortech.2013.09.136] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 09/26/2013] [Accepted: 09/29/2013] [Indexed: 06/02/2023]
Abstract
In this study, the microalgae culture system to combined active treatment system and pipe inserted microalgae reactor (PIMR) was investigated. After pretreated AMD in active treatment system, the effluent load to PIMR in order to Nephroselmis sp. KGE 8 culture. In experiment, effect of iron on growth and lipid accumulation in microalgae were inspected. The 2nd pretreatment effluent was economic feasibility of microalgae culture and lipid accumulation. The growth kinetics of the microalgae are modeled using logistic growth model and the model is primarily parameterized from data obtained through an experimental study where PIMR were dosed with BBM, BBM added 10 mg L(-1) iron and 2nd pretreatment effluent. Moreover, the continuous of microalgae culture in PIMR can be available. Overall, this study indicated that the use of pretreated AMD is a viable method for culture microalgae and lipid accumulation.
Collapse
Affiliation(s)
- Young-Tae Park
- Korea Institute of Science and Technology, Gangneung Institute, 679 Saimdang-ro, Gangneung 210-340, South Korea
| | | | | | | | | | | |
Collapse
|
148
|
Bijoux A, Ribou AC. Time-resolved microfluorimetry: An alternative method for free radical and metabolic rate detection in microalgae. Biotechnol J 2013; 9:294-300. [DOI: 10.1002/biot.201300217] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 07/26/2013] [Accepted: 09/16/2013] [Indexed: 12/17/2022]
|
149
|
Gaurav K, Srivastava R, Singh R. Exploring Biodiesel: Chemistry, Biochemistry, and Microalgal Source. INTERNATIONAL JOURNAL OF GREEN ENERGY 2013; 10:775-796. [DOI: 10.1080/15435075.2012.726673] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
|
150
|
Breuer G, Lamers PP, Martens DE, Draaisma RB, Wijffels RH. Effect of light intensity, pH, and temperature on triacylglycerol (TAG) accumulation induced by nitrogen starvation in Scenedesmus obliquus. BIORESOURCE TECHNOLOGY 2013; 143:1-9. [PMID: 23774290 DOI: 10.1016/j.biortech.2013.05.105] [Citation(s) in RCA: 135] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 05/22/2013] [Accepted: 05/25/2013] [Indexed: 05/20/2023]
Abstract
Microalgae-derived lipids in the form of triacylglycerols (TAGs) are considered an alternative resource for the production of biofuels and food commodities. Large scale production of microalgal TAGs is currently uneconomical. The cost price could be reduced by improving the areal and volumetric TAG productivity. The economic value could be increased by enhancing the TAG quality. To improve these characteristics, the impact of light intensity, and the combined impact of pH and temperature on TAG accumulation were studied for Scenedesmus obliquus UTEX 393 under nitrogen starved conditions. The maximum TAG content was independent of light intensity, but varied between 18% and 40% of dry weight for different combinations of pH and temperature. The highest yield of fatty acids on light (0.263 g/mol photon) was achieved at the lowest light intensity, pH 7 and 27.5 °C.
Collapse
Affiliation(s)
- Guido Breuer
- Bioprocess Engineering & AlgaePARC, Wageningen University and Research Centre, P.O. Box 8129, 6700 EV Wageningen, The Netherlands.
| | | | | | | | | |
Collapse
|