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Cretton M, Malanga G, Mazzuca Sobczuk T, Mazzuca M. Marine lipids as a source of high-quality fatty acids and antioxidants. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2022.2042555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Martina Cretton
- Facultad de Ciencias Naturales y Ciencias de la Salud, Departamento de Química, Universidad Nacional de la Patagonia San Juan Bosco, Chubut, Argentina
- CONICET - Centro de Investigación yTransferencia Golfo San Jorge (CIT-GSJ), Comodoro Rivadavia,Chubut, Argentina
| | - Gabriela Malanga
- Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires. Instituto de Bioquímica y Medicina Molecular (IBIMOL), Buenos Aires, Argentina
| | - Tania Mazzuca Sobczuk
- Departamento de Ingeniería Química, Campus de Excelencia Internacional Agroalimentario (CeiA3), Universidad de Almería, Spain
| | - Marcia Mazzuca
- Facultad de Ciencias Naturales y Ciencias de la Salud, Departamento de Química, Universidad Nacional de la Patagonia San Juan Bosco, Chubut, Argentina
- CONICET - Centro de Investigación yTransferencia Golfo San Jorge (CIT-GSJ), Comodoro Rivadavia,Chubut, Argentina
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Effects of Acid-fermented Food Wastewater in Microwave-based Direct Lipid Extraction from Wet Microalgae. BIOTECHNOL BIOPROC E 2021. [DOI: 10.1007/s12257-020-0312-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ha GS, Saha S, Basak B, Kurade MB, Kim GU, Ji MK, Ahn Y, Salama ES, Woong Chang S, Jeon BH. High-throughput integrated pretreatment strategies to convert high-solid loading microalgae into high-concentration biofuels. BIORESOURCE TECHNOLOGY 2021; 340:125651. [PMID: 34333346 DOI: 10.1016/j.biortech.2021.125651] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/19/2021] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
The commercial feasibility of energy-efficient conversion of highly concentrated microalgal suspensions to produce high-titer biofuels is a major bottleneck due to high energy consumption. Herein, high-titer biofuels (bioethanol, higher-alcohols, and biodiesel) were generated from carbohydrate-rich Chlamydomonas mexicana and lipid-rich Chlamydomonas pitschmannii biomass through energy-saving microwave pretreatment, successive fermentation, and transesterification. Microwave pretreatment needed low specific energy (4.2 MJ/kg) for 100 g/L of microalgal suspension. Proposed sustainable integrated pretreatments method achieved unprecedented total conversion efficiency (67%) and highest biomass utilization (87%) of C. pitschmannii (100 g/L) with high yields of bioethanol (0.48 g-ethanol/g-carbohydrates), higher-alcohols (0.44 g-higher-alcohols/g-proteins), and biodiesel (0.90 g-biodiesel/g-lipids). Transmission electron microscopy showed the changes in the microalgal cellular integrity before and after sequential fermentations. Energy-efficient integrated pretreatments enhanced the extraction efficiency and whole utilization of high-concentration microalgae to generate high-titer biofuels with minimum waste production.
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Affiliation(s)
- Geon-Soo Ha
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, South Korea
| | - Shouvik Saha
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, South Korea
| | - Bikram Basak
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, South Korea
| | - Mayur B Kurade
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, South Korea
| | - Gyeong-Uk Kim
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, South Korea
| | - Min-Kyu Ji
- Environmental Assessment Group, Korea Environment Institute, Yeongi-gun 30147, South Korea
| | - Yongtae Ahn
- Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology, South Korea
| | - El-Sayed Salama
- Department of Occupational and Environmental Health, School of Public Health, Lanzhou University, Lanzhou 730000, Gansu Province, PR China
| | - Soon Woong Chang
- Department of Environmental Engineering, Kyonggi University, Suwon 16627, South Korea
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, South Korea.
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Yatipanthalawa B, Li W, Hill DRA, Trifunovic Z, Ashokkumar M, Scales PJ, Martin GJO. Interplay between interfacial behaviour, cell structure and shear enables biphasic lipid extraction from whole diatom cells (Navicula sp.). J Colloid Interface Sci 2021; 589:65-76. [PMID: 33450461 DOI: 10.1016/j.jcis.2020.12.056] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/25/2020] [Accepted: 12/17/2020] [Indexed: 10/22/2022]
Abstract
HYPOTHESIS Bacillariophyceae (i.e., diatoms) are an important class of algae with potential use in the production of proteins and lipids including long-chain ω-3 polyunsaturated fatty acids. Biphasic extraction of microalgae lipids using water-immiscible solvents such as hexane, can avoid the excessive energy required to distil solvents from water, but generally requires energy-intensive rupture of the cells. The unique cell structure and surface chemistry of diatoms compared to other microalgae species might allow biphasic lipid extraction without prior cell rupture. EXPERIMENTS The kinetics of biphasic lipid extraction from intact Navicula sp. cells was investigated during low-shear and high-shear mixing, and with prior or simultaneous application of ultrasound (20 kHz at 0.57 W/mL). Dynamic interfacial tension measurements and electron microscopic analysis were used to investigate lipid extraction in relation to interfacial behaviour and cell structure. RESULTS High yields (>80%) of intracellular lipids were extracted from intact cells over the course of hours upon low-shear contacting with hexane. The cells associated with and stabilised the hexane-water interface, allowing hexane to infiltrate pores in the frustule component of the cell walls and access the intracellular lipids. It was shown that mucilaginous extracellular polymeric substances (EPS) bound to the cell walls acted as a barrier to solvent penetration into the cells. This EPS could be removed by prior ultrasonication. Biphasic extraction was greatly accelerated by shear applied by rotor-stator mixing or ultrasound. High-shear could remove mucilaginous EPS from the cell surfaces to facilitate direct contact of the cell surface with hexane and produced smaller emulsion droplets with increased surface area. The combination of high-shear in the presence of hexane resulted in the in-situ rupture of the cells, which greatly accelerated lipid extraction and allowed high yields of neutral lipid (>95%) to be recovered from freshly harvested cells within less than 5 min. The study demonstrated the ability of shear to enable simultaneous cell rupture and lipid extraction from a diatom alga based on its cell structure and interfacial behaviour.
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Affiliation(s)
- Bhagya Yatipanthalawa
- Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
| | - Wu Li
- Sonochemistry Group, School of Chemistry, The University of Melbourne, Parkville, Melbourne, Victoria 3010, Australia.
| | - David R A Hill
- Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
| | - Zlatan Trifunovic
- Advanced Microscopy Facility, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Victoria 3010, Australia.
| | - Muthupandian Ashokkumar
- Sonochemistry Group, School of Chemistry, The University of Melbourne, Parkville, Melbourne, Victoria 3010, Australia.
| | - Peter J Scales
- Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
| | - Gregory J O Martin
- Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
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Amorim ML, Soares J, Vieira BB, Batista-Silva W, Martins MA. Extraction of proteins from the microalga Scenedesmus obliquus BR003 followed by lipid extraction of the wet deproteinized biomass using hexane and ethyl acetate. BIORESOURCE TECHNOLOGY 2020; 307:123190. [PMID: 32213445 DOI: 10.1016/j.biortech.2020.123190] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 03/12/2020] [Accepted: 03/13/2020] [Indexed: 06/10/2023]
Abstract
A current problem of the lipid extraction from wet biomass is the formation of emulsions during the mixing of the microalgal biomass and organic solvents. It has been suggested that microalgal proteins play an important role in the formation and stability of such emulsions. Herein, the extraction of proteins of the freshwater microalga Scenedesmus obliquus BR003 was optimized for further extraction of lipids from the wet deproteinized biomass. The optimal (pH 12 at 60 °C for 3 h) and moderate (pH 10.5 at 50 °C for 2 h) conditions of protein extraction resulted in protein yields of 20.6% and 15.4%, respectively. Wet lipid extraction of deproteinized biomass resulted in a less stable emulsion that released twice the solvent than the control biomass. However, the faster separation of phases that occurred during the wet lipid extraction of the deproteinized biomass resulted in a lipid yield twice lower than the control biomass.
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Affiliation(s)
- Matheus Lopes Amorim
- Department of Agricultural Engineering, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | - Jimmy Soares
- Department of Agricultural Engineering, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | - Bruno Bezerra Vieira
- Department of Chemical Engineering, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | - Willian Batista-Silva
- Department of Plant Biology, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | - Marcio Arêdes Martins
- Department of Agricultural Engineering, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil.
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Mettu S, Yao S, Sun Q, Lawson SR, Scales PJ, Martin GJO, Ashokkumar M. Effect of Bulk Viscosity and Emulsion Droplet Size on the Separation Efficiency of Model Mineral Oil-in-Water (O/W) Emulsions under Ultrasonic Standing Wave Fields: A Theoretical and Experimental Investigation. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00616] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Srinivas Mettu
- Sonochemistry Group, School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
- Chemical and Environmental Engineering Department, RMIT University, Melbourne 3000, Australia
| | - Shunyu Yao
- Sonochemistry Group, School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Qiang Sun
- Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Samuel Ronald Lawson
- Sonochemistry Group, School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Peter J. Scales
- Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Gregory J. O. Martin
- Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Muthupandian Ashokkumar
- Sonochemistry Group, School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
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Lee D, Kim H, Jeon M, Chang YK, Im SG. Surface-Modified Filter-Based Continuous Recovery of Microalgal Lipid-in-Solvent with High Recovery Efficiency, Long-Term Stability, and Cost Competitiveness. ACS APPLIED BIO MATERIALS 2019; 3:263-272. [DOI: 10.1021/acsabm.9b00790] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Donghyo Lee
- Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Hogi Kim
- Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Mingyu Jeon
- Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Yong Keun Chang
- Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- Advanced Biomass R&D Center, KAIST, #2502 Building W1-3, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Sung Gap Im
- Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
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High shear-assisted solvent extraction of lipid from wet biomass of Aurantiochytrium sp. KRS101. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.06.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Rheological properties of concentrated slurries of harvested, incubated and ruptured Nannochloropsis sp. cells. ACTA ACUST UNITED AC 2019. [DOI: 10.1186/s42480-019-0011-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Simultaneous extraction and fractionation of omega-3 acylglycerols and glycolipids from wet microalgal biomass of Nannochloropsis gaditana using pressurized liquids. ALGAL RES 2019. [DOI: 10.1016/j.algal.2018.11.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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The effect of high-intensity ultrasound on cell disruption and lipid extraction from high-solids viscous slurries of Nannochloropsis sp. biomass. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.09.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Law SQK, Halim R, Scales PJ, Martin GJO. Conversion and recovery of saponifiable lipids from microalgae using a nonpolar solvent via lipase-assisted extraction. BIORESOURCE TECHNOLOGY 2018; 260:338-347. [PMID: 29649726 DOI: 10.1016/j.biortech.2018.03.129] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 03/26/2018] [Accepted: 03/29/2018] [Indexed: 05/13/2023]
Abstract
A single-step method for transesterifying and recovering lipids in concentrated slurries (ca 20% w/w solids) of ruptured microalgae is presented. A soluble Rhizomucor miehei lipase (RML) was used to directly transesterify the lipids in the marine microalgae Nannochloropsis salina. This allowed both triglycerides (TAG) and polar saponifiable lipids to be recovered as fatty acid methyl esters (FAME) using a nonpolar solvent (hexane). Up to 90 wt% of the total saponifiable lipids (SL) were converted to FAME within 24 h, approximately 75% of which was recovered in the hexane by centrifugation. Two pathways for the conversion and recovery of polar lipids were identified. The water in the slurry buffered against potential lipase inhibition by methanol, but necessitated a high methanol dose for maximal FAME conversion. Nonetheless the method enables the recovery of polar lipids as FAME while avoiding the need for both drying of the biomass and a downstream transesterification step.
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Affiliation(s)
- Sam Q K Law
- Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Ronald Halim
- Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Peter J Scales
- Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Gregory J O Martin
- Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
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Emulsifying properties of ruptured microalgae cells: Barriers to lipid extraction or promising biosurfactants? Colloids Surf B Biointerfaces 2018; 170:438-446. [PMID: 29957533 DOI: 10.1016/j.colsurfb.2018.06.047] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 06/20/2018] [Accepted: 06/20/2018] [Indexed: 12/16/2022]
Abstract
A systematic investigation of the emulsifying properties of ruptured algae cells was performed for the first time. The slurry of ruptured algae cells was separated into different biomass fractions, namely the cell debris, the delipidated debris, the serum, and the lipid. The interfacial interactions of these biomass fractions with a nonpolar solvent (e.g. hexane or hexadecane) were characterized using pendant drop tensiometry and interfacial shear rheology. The stability of the different emulsions (formed by the different biomass fractions) was tested using analytical centrifugation. The extracted lipid was an excellent surfactant that reduced the interfacial tension, however, it was not effective at stabilizing the emulsions. The protein-rich serum produced a strong interfacial film that stabilized the emulsions against coalescence during centrifugation. The cell debris stabilized the emulsions to a lesser extent by adsorbing to the droplet surface, presumably via interactions with hydrophobic extracellular polymeric substances (EPS). However, neither the serum nor the cell debris were very effective surfactants, and required the presence of the lipid fraction to produce small emulsion droplets. When present together, the components exhibited competitive interfacial adsorption, which influenced emulsion stability. In particular, the interruption of the protein film by the presence of lipid or cell debris reduced the stability of the emulsions. This study provides a new mechanistic understanding of emulsification during wet lipid extraction from microalgae that will be useful for determining strategies to improve solvent recovery. The results also suggest potential for developing effective bioemulsifiers or biosurfactants from fractionated microalgae biomass for commercial application.
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