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Chaos-Hernández D, Reynel-Ávila HE, Bonilla-Petriciolet A, Villalobos-Delgado FJ. Extraction methods of algae oils for the production of third generation biofuels - A review. CHEMOSPHERE 2023; 341:139856. [PMID: 37598949 DOI: 10.1016/j.chemosphere.2023.139856] [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: 03/27/2023] [Revised: 06/19/2023] [Accepted: 08/15/2023] [Indexed: 08/22/2023]
Abstract
Microalgae are the main source of third-generation biofuels because they have a lipid content of 20-70%, can be abundantly produced and do not compete in the food market besides other benefits. Biofuel production from microalgae is a promising option to contribute for the resolution of the eminent crisis of fossil energy and environmental pollution specially in the transporting sector. The choice of lipid extraction method is of relevance and associated to the algae morphology (i.e., rigid cells). Therefore, it is essential to develop suitable extraction technologies for economically viable and environment-friendly lipid recovery processes with the aim of achieving a commercial production of biofuels from this biomass. This review presents an exhaustive analysis and discussion of different methods and processes of lipid extraction from microalgae for the subsequent conversion to biodiesel. Physical methods based on the use of supercritical fluids, ultrasound and microwaves were reviewed. Chemical methods using solvents with different polarities, aside from mechanical techniques such as mechanical pressure and enzymatic methods, were also analyzed. The advantages, drawbacks, challenges and future prospects of lipid extraction methods from microalgae have been summarized to provide a wide panorama of this relevant topic for the production of economic and sustainable energy worldwide.
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Affiliation(s)
- D Chaos-Hernández
- Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos #1801, Aguascalientes, Ags., C.P. 20256, Mexico
| | - H E Reynel-Ávila
- Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos #1801, Aguascalientes, Ags., C.P. 20256, Mexico; CONACYT, Av. Insurgentes 1582 Sur, Ciudad de México, 03940, Aguascalientes, Ags, Mexico.
| | - A Bonilla-Petriciolet
- Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos #1801, Aguascalientes, Ags., C.P. 20256, Mexico
| | - F J Villalobos-Delgado
- Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos #1801, Aguascalientes, Ags., C.P. 20256, Mexico
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Sousa S, Carvalho AP, Pinto CA, Amaral RA, Saraiva JA, Pereira RN, Vicente AA, Freitas AC, Gomes AM. Combining high pressure and electric fields towards Nannochloropsis oculata eicosapentaenoic acid-rich extracts. Appl Microbiol Biotechnol 2023:10.1007/s00253-023-12626-w. [PMID: 37382612 PMCID: PMC10386933 DOI: 10.1007/s00253-023-12626-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 04/20/2023] [Accepted: 06/07/2023] [Indexed: 06/30/2023]
Abstract
Nannochloropsis oculata is naturally rich in eicosapentaenoic acid (EPA). To turn this microalga into an economically viable source for commercial applications, extraction efficiency must be achieved. Pursuing this goal, emerging technologies such as high hydrostatic pressure (HHP) and moderate electric fields (MEF) were tested, aiming to increase EPA accessibility and subsequent extraction yields. The innovative approach used in this study combined these technologies and associated tailored, less hazardous different solvent mixtures (SM) with distinct polarity indexes. Although the classical Folch SM with chloroform: methanol (PI 4.4) provided the highest yield concerning total lipids (166.4 mglipid/gbiomass), diethyl ether: ethanol (PI 3.6) presented statistically higher values in terms of EPA per biomass, corresponding to 1.3-fold increase. When SM were used in HHP and MEF, neither technology independently improved EPA extraction yields, although the sequential combination of technologies did result in 62% increment in EPA extraction. Overall, the SM and extraction methodologies tested (HHP-200 MPa, 21 °C, 15 min, followed by MEF processing at 40 °C, 15 min) enabled increased EPA extraction yields from wet N. oculata biomass. These findings are of high relevance for the food and pharmaceutical industries, providing viable alternatives to the "classical" extraction methodologies and solvents, with increased yields and lower environmental impact. KEY POINTS: • Et2O: EtOH is a less toxic and more efficient alternative to Folch solvent mixture • HHP or MEF per se was not able to significantly increase EPA extraction yield • Combinations of HHP and MEF technologies increased both lipids and EPA yields.
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Affiliation(s)
- Sérgio Sousa
- Universidade Católica Portuguesa, CBQF-Centro de Biotecnologia e Química Fina-Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005, Porto, Portugal
- REQUIMTE/LAQV-Instituto Superior de Engenharia, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida, 431, 4200-072, Porto, Portugal
| | - Ana P Carvalho
- Universidade Católica Portuguesa, CBQF-Centro de Biotecnologia e Química Fina-Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005, Porto, Portugal.
- REQUIMTE/LAQV-Instituto Superior de Engenharia, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida, 431, 4200-072, Porto, Portugal.
| | - Carlos A Pinto
- LAQV-REQUIMTE-Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Renata A Amaral
- LAQV-REQUIMTE-Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Jorge A Saraiva
- LAQV-REQUIMTE-Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Ricardo N Pereira
- CEB-Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - António A Vicente
- CEB-Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Ana C Freitas
- Universidade Católica Portuguesa, CBQF-Centro de Biotecnologia e Química Fina-Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005, Porto, Portugal
| | - Ana M Gomes
- Universidade Católica Portuguesa, CBQF-Centro de Biotecnologia e Química Fina-Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005, Porto, Portugal
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Sousa SC, Freitas AC, Gomes AM, Carvalho AP. Extraction of Nannochloropsis Fatty Acids Using Different Green Technologies: The Current Path. Mar Drugs 2023; 21:365. [PMID: 37367690 DOI: 10.3390/md21060365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 06/09/2023] [Accepted: 06/12/2023] [Indexed: 06/28/2023] Open
Abstract
Nannochloropsis is a genus of microalgae widely recognized as potential sources of distinct lipids, particularly polyunsaturated fatty acids (PUFA). These may be obtained through extraction, which has conventionally been performed using hazardous organic solvents. To substitute such solvents with "greener" alternatives, several technologies have been studied to increase their extraction potential. Distinct technologies utilize different principles to achieve such objective; while some aim at disrupting the cell walls of the microalgae, others target the extraction per se. While some methods have been utilized independently, several technologies have also been combined, which has proven to be an effective strategy. The current review focuses on the technologies explored in the last five years to extract or increase extraction yields of fatty acids from Nannochloropsis microalgae. Depending on the extraction efficacy of the different technologies, distinct types of lipids and/or fatty acids are obtained accordingly. Moreover, the extraction efficiency may vary depending on the Nannochloropsis species. Hence, a case-by-case assessment must be conducted in order to ascertain the most suited technology, or tailor a specific one, to be applied to recover a particular fatty acid (or fatty acid class), namely PUFA, including eicosapentaenoic acid.
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Affiliation(s)
- Sérgio Cruz Sousa
- CBQF-Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
- REQUIMTE/LAQV-Instituto Superior de Engenharia, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal
| | - Ana Cristina Freitas
- CBQF-Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
| | - Ana Maria Gomes
- CBQF-Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
| | - Ana P Carvalho
- CBQF-Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
- REQUIMTE/LAQV-Instituto Superior de Engenharia, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal
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Oh YK, Kim S, Ilhamsyah DPA, Lee SG, Kim JR. Cell disruption and lipid extraction from Chlorella species for biorefinery applications: Recent advances. BIORESOURCE TECHNOLOGY 2022; 366:128183. [PMID: 36307027 DOI: 10.1016/j.biortech.2022.128183] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/18/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
Chlorella is a promising microalga for CO2-neutral biorefinery that co-produces drop-in biofuels and multiple biochemicals. Cell disruption and selective lipid extraction steps are major technical bottlenecks in biorefinement because of the inherent robustness and complexity of algal cell walls. This review focuses on the state-of-the-art achievements in cell disruption and lipid extraction methods for Chlorella species within the last five years. Various chemical, physical, and biological approaches have been detailed theoretically, compared, and discussed in terms of the degree of cell wall disruption, lipid extractability, chemical toxicity, cost-effectiveness, energy use, scalability, customer preferences, environment friendliness, and synergistic combinations of different methods. Future challenges and prospects of environmental-friendly and efficient extraction technologies are also outlined for practical applications in sustainable Chlorella biorefineries. Given the diverse industrial applications of Chlorella, this review may provide useful information for downstream processing of the advanced biorefineries of other algae genera.
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Affiliation(s)
- You-Kwan Oh
- School of Chemical Engineering, Pusan National University (PNU), Busan 46241, Republic of Korea.
| | - Sangui Kim
- School of Chemical Engineering, Pusan National University (PNU), Busan 46241, Republic of Korea
| | | | - Sun-Gu Lee
- School of Chemical Engineering, Pusan National University (PNU), Busan 46241, Republic of Korea
| | - Jung Rae Kim
- School of Chemical Engineering, Pusan National University (PNU), Busan 46241, Republic of Korea
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Martín-Vertedor D, Schaide T, Boselli E, Martínez M, García-Parra J, Pérez-Nevado F. Effect of High Hydrostatic Pressure in the Storage of Spanish-Style Table Olive Fermented with Olive Leaf Extract and Saccharomyces cerevisiae. Molecules 2022; 27:molecules27062028. [PMID: 35335389 PMCID: PMC8950053 DOI: 10.3390/molecules27062028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/14/2022] [Accepted: 03/16/2022] [Indexed: 11/16/2022] Open
Abstract
Olives treated according to the Spanish-style are firstly treated with caustic soda and then fermented in brine to reduce phenols. Next, olives are packed and subjected to pasteurization. The effect of different high hydrostatic pressure treatments (400 MPa, 4 and 6 min) was evaluated in Spanish-style table olives fermented with olive leaf extract (OLE) and S. cerevisiae compared with thermal pasteurization (P) at 80 °C for 15 min. HHP and P led to a significant reduction in yeast and aerobic mesophiles after the conservation treatment and during storage (300 days). The physical-chemical properties changed slightly during storage, except for olive hardness; olives treated with HHP presented a higher hardness than pasteurized ones. The CIELAB parameter L* decreased until day 300 in most of the treatments, as well as phenols. The HHP treatment led to significantly higher contents of phenolics (even during storage) than olives submitted to P. Some sensory attributes (colour, aspect, hardness, and overall evaluation) decreased during storage. P treatment caused a decrease in appearance, aroma, hardness, and overall evaluation compared to olives treated with HHP. Thus, the application of HHP in table olives to increase the shelf-life can be considered a valid alternative to P.
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Affiliation(s)
- Daniel Martín-Vertedor
- Technological Institute of Food and Agriculture (CICYTEX-INTAEX), Junta of Extremadura, Avda. Adolfo Suárez s/n, 06007 Badajoz, Spain;
- Research Institute of Agricultural Resources (INURA), Avda. de la Investigación s/n, Campus Universitario, 06006 Badajoz, Spain; (T.S.); (M.M.); (F.P.-N.)
- Correspondence: ; Tel.: +34-924-012-664
| | - Thais Schaide
- Research Institute of Agricultural Resources (INURA), Avda. de la Investigación s/n, Campus Universitario, 06006 Badajoz, Spain; (T.S.); (M.M.); (F.P.-N.)
- Área de Nutrición y Bromatología, Departamento de Producción Animal y Ciencia de los Alimentos, Escuela de Ingenierías Agrarias, Universidad de Extremadura, 06007 Badajoz, Spain
| | - Emanuele Boselli
- Faculty of Science and Technology, Free University of Bozen-Bolzano, Piazza Università 1, 39100 Bolzano, Italy;
| | - Manuel Martínez
- Research Institute of Agricultural Resources (INURA), Avda. de la Investigación s/n, Campus Universitario, 06006 Badajoz, Spain; (T.S.); (M.M.); (F.P.-N.)
- Área de Producción Vegetal, Departamento de Ingeniería del Medio Agronómico y Forestal, Escuela de Ingenierías Agrarias, Universidad de Extremadura, 06007 Badajoz, Spain
| | - Jesús García-Parra
- Technological Institute of Food and Agriculture (CICYTEX-INTAEX), Junta of Extremadura, Avda. Adolfo Suárez s/n, 06007 Badajoz, Spain;
| | - Francisco Pérez-Nevado
- Research Institute of Agricultural Resources (INURA), Avda. de la Investigación s/n, Campus Universitario, 06006 Badajoz, Spain; (T.S.); (M.M.); (F.P.-N.)
- Área de Nutrición y Bromatología, Departamento de Producción Animal y Ciencia de los Alimentos, Escuela de Ingenierías Agrarias, Universidad de Extremadura, 06007 Badajoz, Spain
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Zarrinmehr MJ, Daneshvar E, Nigam S, Gopinath KP, Biswas JK, Kwon EE, Wang H, Farhadian O, Bhatnagar A. The effect of solvents polarity and extraction conditions on the microalgal lipids yield, fatty acids profile, and biodiesel properties. BIORESOURCE TECHNOLOGY 2022; 344:126303. [PMID: 34752885 DOI: 10.1016/j.biortech.2021.126303] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/01/2021] [Accepted: 11/03/2021] [Indexed: 05/28/2023]
Abstract
This study reports the effects of polar (acetone/methanol) and non-polar (chloroform/hexane) solvents on lipid yield, fatty acids methyl esters (FAMEs) composition, and biodiesel properties of microalgae. The lipids yield extracted by hexane and chloroform (100.01 and 94.33 mg/g) were higher than by methanol and acetone (40.12 and 86.91 mg/g). The polarity of solvents also affected FAMEs composition of microalgal lipids. Total saturated fatty acids and unsaturated fatty acids of extracted lipids were 61.53% and 38.47% by chloroform and 38.85% and 61.15% by methanol. Moreover, polar and non-polar solvents affected the biodiesel properties such as cetane number and oxidative stability. In addition, higher ratio of chloroform to methanol and higher temperature increased the lipid yield and saturation degree of lipids, through ultrasound-assisted lipid extraction method. Overall, the results revealed that the lipids yield, FAMEs composition, and biodiesel quality of microalgal biomass can be significantly affected by solvents polarity and extraction conditions.
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Affiliation(s)
- Mohammad Javad Zarrinmehr
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland; Department of Natural Resources, Isfahan University of Technology, Isfahan 8415683111, Iran
| | - Ehsan Daneshvar
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland; Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130 Mikkeli, Finland.
| | - Subhasha Nigam
- Amity Institute of Biotechnology, Amity University, Noida Uttar Pradesh 201313, India
| | - Kannappan Panchamoorthy Gopinath
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110 Chennai, Tamil Nadu, India
| | - Jayanta Kumar Biswas
- Department of Ecological Studies, University of Kalyani, Nadia, West Bengal, India; International Centre for Ecological Engineering, University of Kalyani, Kalyani, West Bengal, India
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, Seoul 05005, Republic of Korea
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, PR China; Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental and Resource Sciences, Zhejiang A&F University, Hangzhou, Zhejiang 311300, PR China
| | - Omidvar Farhadian
- Department of Natural Resources, Isfahan University of Technology, Isfahan 8415683111, Iran
| | - Amit Bhatnagar
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland; Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130 Mikkeli, Finland
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