251
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Postma PR, Suarez-Garcia E, Safi C, Yonathan K, Olivieri G, Barbosa MJ, Wijffels RH, Eppink MHM. Energy efficient bead milling of microalgae: Effect of bead size on disintegration and release of proteins and carbohydrates. BIORESOURCE TECHNOLOGY 2017; 224:670-679. [PMID: 27914784 DOI: 10.1016/j.biortech.2016.11.071] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 11/16/2016] [Accepted: 11/17/2016] [Indexed: 05/07/2023]
Abstract
The disintegration of three industry relevant algae (Chlorella vulgaris, Neochloris oleoabundans and Tetraselmis suecica) was studied in a lab scale bead mill at different bead sizes (0.3-1mm). Cell disintegration, proteins and carbohydrates released into the water phase followed a first order kinetics. The process is selective towards proteins over carbohydrates during early stages of milling. In general, smaller beads led to higher kinetic rates, with a minimum specific energy consumption of ⩽0.47kWhkgDW-1 for 0.3mm beads. After analysis of the stress parameters (stress number and stress intensity), it appears that optimal disintegration and energy usage for all strains occurs in the 0.3-0.4mm range. During the course of bead milling, the native structure of the marker protein Rubisco was retained, confirming the mildness of the disruption process.
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Affiliation(s)
- P R Postma
- Bioprocess Engineering, AlgaePARC, Wageningen University & Research, PO Box 16, 6700 AA Wageningen, The Netherlands.
| | - E Suarez-Garcia
- Bioprocess Engineering, AlgaePARC, Wageningen University & Research, PO Box 16, 6700 AA Wageningen, The Netherlands
| | - C Safi
- Wageningen Food & Biobased Research, AlgaePARC, PO Box 17, 6700 AA Wageningen, The Netherlands
| | - K Yonathan
- Bioprocess Engineering, AlgaePARC, Wageningen University & Research, PO Box 16, 6700 AA Wageningen, The Netherlands
| | - G Olivieri
- Bioprocess Engineering, AlgaePARC, Wageningen University & Research, PO Box 16, 6700 AA Wageningen, The Netherlands; Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Piazzale V. Tecchio 80, 80125 Napoli, Italy
| | - M J Barbosa
- Bioprocess Engineering, AlgaePARC, Wageningen University & Research, PO Box 16, 6700 AA Wageningen, The Netherlands
| | - R H Wijffels
- Bioprocess Engineering, AlgaePARC, Wageningen University & Research, PO Box 16, 6700 AA Wageningen, The Netherlands; Nord University, Faculty of Biosciences and Aquaculture, N-8049 Bodø, Norway
| | - M H M Eppink
- Bioprocess Engineering, AlgaePARC, Wageningen University & Research, PO Box 16, 6700 AA Wageningen, The Netherlands
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252
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Carrillo-Reyes J, Buitrón G. Biohydrogen and methane production via a two-step process using an acid pretreated native microalgae consortium. BIORESOURCE TECHNOLOGY 2016; 221:324-330. [PMID: 27648852 DOI: 10.1016/j.biortech.2016.09.050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/07/2016] [Accepted: 09/11/2016] [Indexed: 06/06/2023]
Abstract
A native microalgae consortium treated under thermal-acidic hydrolysis was used to produce hydrogen and methane in a two-step sequential process. Different acid concentrations were tested, generating hydrogen and methane yields of up to 45mLH2gVS-1 and 432mLCH4gVS-1, respectively. The hydrogen production step solubilized the particulate COD (chemical oxygen demand) up to 30%, creating considerable amounts of volatile fatty acids (up to 10gCODL-1). It was observed that lower acid concentration presented higher hydrogen and methane production potential. The results revealed that thermal acid hydrolysis of a native microalgae consortium is a simple but effective strategy for producing hydrogen and methane in the sequential process. In addition to COD removal (50-70%), this method resulted in an energy recovery of up to 15.9kJ per g of volatile solids of microalgae biomass, one of the highest reported.
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Affiliation(s)
- Julian Carrillo-Reyes
- Laboratory for Research on Advanced Processes for Water Treatment, Unidad Académica Juriquilla, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro 76230, Mexico
| | - Germán Buitrón
- Laboratory for Research on Advanced Processes for Water Treatment, Unidad Académica Juriquilla, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro 76230, Mexico.
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253
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Phong WN, Le CF, Show PL, Chang JS, Ling TC. Extractive disruption process integration using ultrasonication and an aqueous two-phase system for protein recovery from Chlorella sorokiniana. Eng Life Sci 2016; 17:357-369. [PMID: 32624781 DOI: 10.1002/elsc.201600133] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 08/27/2016] [Accepted: 09/08/2016] [Indexed: 01/07/2023] Open
Abstract
Microalgae emerge as the most promising protein sources for aquaculture industry. However, the commercial proteins production at low cost remains a challenge. The process of harnessing microalgal proteins involves several steps such as cell disruption, isolation and extraction. The discrete processes are generally complicated, time-consuming and costly. To date, the notion of integrating microalgal cell disruption and proteins recovery process into one step is yet to explore. Hence, this study aimed to investigate the feasibility of applying methanol/potassium ATPS in the integrated process for proteins recovery from Chlorella sorokiniana. Parameters such as salt types, salt concentrations, methanol concentrations, NaCl addition were optimized. The possibility of upscaling and the effectiveness of recycling the phase components were also studied. The results showed that ATPS formed by 30% (w/w) K3PO4 and 20% (w/w) methanol with 3% (w/w) NaCl addition was optimum for proteins recovery. In this system, the partition coefficient and yield were 7.28 and 84.23%, respectively. There were no significant differences in the partition coefficient and yield when the integrated process was upscaled to 100-fold. The recovered phase components can still be recycled effectively at fifth cycle. In conclusions, this method is simple, rapid, environmental friendly and could be implemented at large scale.
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Affiliation(s)
- Win Nee Phong
- Institute of Biological Sciences, Faculty of Science University of Malaya Kuala Lumpur Malaysia
| | - Cheng Foh Le
- School of Pharmacy, Faculty of Science University of Nottingham Malaysia Campus Semenyih Malaysia
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Engineering University of Nottingham Malaysia Campus Semenyih Malaysia.,Food and Pharmaceutical Engineering Research Group, Molecular Pharming and Bioproduction Research Group University of Nottingham Malaysia Campus Semenyih Malaysia
| | - Jo-Shu Chang
- Department of Chemical Engineering National Cheng Kung University Tainan Taiwan.,Research Center for Energy Technology and Strategy National Cheng Kung University Tainan Taiwan
| | - Tau Chuan Ling
- Institute of Biological Sciences, Faculty of Science University of Malaya Kuala Lumpur Malaysia
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254
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Microalgae Potential and Multiple Roles—Current Progress and Future Prospects—An Overview. SUSTAINABILITY 2016. [DOI: 10.3390/su8121215] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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255
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256
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Yenkie KM, Wu W, Clark RL, Pfleger BF, Root TW, Maravelias CT. A roadmap for the synthesis of separation networks for the recovery of bio-based chemicals: Matching biological and process feasibility. Biotechnol Adv 2016; 34:1362-1383. [PMID: 27756578 DOI: 10.1016/j.biotechadv.2016.10.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 09/20/2016] [Accepted: 10/14/2016] [Indexed: 12/20/2022]
Abstract
Microbial conversion of renewable feedstocks to high-value chemicals is an attractive alternative to current petrochemical processes because it offers the potential to reduce net CO2 emissions and integrate with bioremediation objectives. Microbes have been genetically engineered to produce a growing number of high-value chemicals in sufficient titer, rate, and yield from renewable feedstocks. However, high-yield bioconversion is only one aspect of an economically viable process. Separation of biologically synthesized chemicals from process streams is a major challenge that can contribute to >70% of the total production costs. Thus, process feasibility is dependent upon the efficient selection of separation technologies. This selection is dependent on upstream processing or biological parameters, such as microbial species, product titer and yield, and localization. Our goal is to present a roadmap for selection of appropriate technologies and generation of separation schemes for efficient recovery of bio-based chemicals by utilizing information from upstream processing, separation science and commercial requirements. To achieve this, we use a separation system comprising of three stages: (I) cell and product isolation, (II) product concentration, and (III) product purification and refinement. In each stage, we review the technology alternatives available for different tasks in terms of separation principles, important operating conditions, performance parameters, advantages and disadvantages. We generate separation schemes based on product localization and its solubility in water, the two most distinguishing properties. Subsequently, we present ideas for simplification of these schemes based on additional properties, such as physical state, density, volatility, and intended use. This simplification selectively narrows down the technology options and can be used for systematic process synthesis and optimal recovery of bio-based chemicals.
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Affiliation(s)
- Kirti M Yenkie
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - WenZhao Wu
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Ryan L Clark
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Brian F Pfleger
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Thatcher W Root
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Christos T Maravelias
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI 53706, United States.
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257
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Ochsenreither K, Glück C, Stressler T, Fischer L, Syldatk C. Production Strategies and Applications of Microbial Single Cell Oils. Front Microbiol 2016; 7:1539. [PMID: 27761130 PMCID: PMC5050229 DOI: 10.3389/fmicb.2016.01539] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 09/14/2016] [Indexed: 11/16/2022] Open
Abstract
Polyunsaturated fatty acids (PUFAs) of the ω-3 and ω-6 class (e.g., α-linolenic acid, linoleic acid) are essential for maintaining biofunctions in mammalians like humans. Due to the fact that humans cannot synthesize these essential fatty acids, they must be taken up from different food sources. Classical sources for these fatty acids are porcine liver and fish oil. However, microbial lipids or single cell oils, produced by oleaginous microorganisms such as algae, fungi and bacteria, are a promising source as well. These single cell oils can be used for many valuable chemicals with applications not only for nutrition but also for fuels and are therefore an ideal basis for a bio-based economy. A crucial point for the establishment of microbial lipids utilization is the cost-effective production and purification of fuels or products of higher value. The fermentative production can be realized by submerged (SmF) or solid state fermentation (SSF). The yield and the composition of the obtained microbial lipids depend on the type of fermentation and the particular conditions (e.g., medium, pH-value, temperature, aeration, nitrogen source). From an economical point of view, waste or by-product streams can be used as cheap and renewable carbon and nitrogen sources. In general, downstream processing costs are one of the major obstacles to be solved for full economic efficiency of microbial lipids. For the extraction of lipids from microbial biomass cell disruption is most important, because efficiency of cell disruption directly influences subsequent downstream operations and overall extraction efficiencies. A multitude of cell disruption and lipid extraction methods are available, conventional as well as newly emerging methods, which will be described and discussed in terms of large scale applicability, their potential in a modern biorefinery and their influence on product quality. Furthermore, an overview is given about applications of microbial lipids or derived fatty acids with emphasis on food applications.
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Affiliation(s)
- Katrin Ochsenreither
- Technical Biology, Institute of Process Engineering in Life Sciences, Karlsruhe Institute of TechnologyKarlsruhe, Germany
| | - Claudia Glück
- Biotechnology and Enzyme Science, Institute of Food Science and Biotechnology, University of HohenheimStuttgart, Germany
| | - Timo Stressler
- Biotechnology and Enzyme Science, Institute of Food Science and Biotechnology, University of HohenheimStuttgart, Germany
| | - Lutz Fischer
- Biotechnology and Enzyme Science, Institute of Food Science and Biotechnology, University of HohenheimStuttgart, Germany
| | - Christoph Syldatk
- Technical Biology, Institute of Process Engineering in Life Sciences, Karlsruhe Institute of TechnologyKarlsruhe, Germany
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258
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Straessner R, Silve A, Eing C, Rocke S, Wuestner R, Leber K, Mueller G, Frey W. Microalgae precipitation in treatment chambers during pulsed electric field (PEF) processing. INNOV FOOD SCI EMERG 2016. [DOI: 10.1016/j.ifset.2016.07.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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259
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Zuorro A, Maffei G, Lavecchia R. Optimization of enzyme-assisted lipid extraction from Nannochloropsis microalgae. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.08.016] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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260
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Lu W, Alam MA, Pan Y, Wu J, Wang Z, Yuan Z. A new approach of microalgal biomass pretreatment using deep eutectic solvents for enhanced lipid recovery for biodiesel production. BIORESOURCE TECHNOLOGY 2016; 218:123-128. [PMID: 27359060 DOI: 10.1016/j.biortech.2016.05.120] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 05/28/2016] [Accepted: 05/30/2016] [Indexed: 06/06/2023]
Abstract
The biomass of Chlorella sp. was pretreated with three different aqueous deep eutectic solvents (aDESs), i.e. aqueous choline chloride-oxalic acid (aCh-O), aqueous choline chloride-ethylene glycol (aCh-EG) and aqueous urea-acetamide (aU-A). The effect of aDESs pretreatment of microalgae biomass was evaluated in terms of lipid recovery rate, total carbohydrate content, fatty acid composition, and thermal chemical behavior of biomass. Results indicated that, lipid recovery rate was increased from 52.03% of untreated biomass to 80.90%, 66.92%, and 75.26% of the biomass treated by aCh-O, aCh-EG and aU-A, respectively. However, there were no major changes observed in fatty acid profiles of both untreated and treated biomass, specifically palmitic acid, palmitoleic acid and stearic acid under various pretreatments. Furthermore, characterizations of untreated and treated biomass were carried out using Fourier transform infrared (FTIR), thermogravimetry analysis (TGA) and scanning electron microscope (SEM) to understand the enhanced lipids recovery.
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Affiliation(s)
- Weidong Lu
- School of Chemistry and Environmental Engineering, Shaoguan University, Shaoguan 512005, China; Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Md Asraful Alam
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Ying Pan
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Nano Science and Technology Institute, University of Science and Technology China, Suzhou 215123, China
| | - Jingcheng Wu
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhongming Wang
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
| | - Zhenhong Yuan
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
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261
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Carrillo-Reyes J, Barragán-Trinidad M, Buitrón G. Biological pretreatments of microalgal biomass for gaseous biofuel production and the potential use of rumen microorganisms: A review. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.07.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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262
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Impact of biochemical composition on susceptibility of algal biomass to acid-catalyzed pretreatment for sugar and lipid recovery. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.06.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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263
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Liu D, Ding L, Sun J, Boussetta N, Vorobiev E. Yeast cell disruption strategies for recovery of intracellular bio-active compounds — A review. INNOV FOOD SCI EMERG 2016. [DOI: 10.1016/j.ifset.2016.06.017] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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264
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Günerken E, D'Hondt E, Eppink M, Elst K, Wijffels R. Influence of nitrogen depletion in the growth of N. oleoabundans on the release of cellular components after beadmilling. BIORESOURCE TECHNOLOGY 2016; 214:89-95. [PMID: 27128193 DOI: 10.1016/j.biortech.2016.04.072] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 04/13/2016] [Accepted: 04/15/2016] [Indexed: 06/05/2023]
Abstract
Cell disruption by bead milling of Neochloris oleoabundans grown under nitrogen repleted (NR) and nitrogen depleted (ND) conditions was evaluated based on the release of biochemicals and biomass to the supernatant. Additionally, energy consumption for cell disruption was calculated per kg of released component. Bead milling of NR cells resulted on average in 34% (w/w) release of biochemicals into the supernatant, with a similar composition as the untreated microalgal biomass. With ND cells, the release was higher and more selective, i.e. 57%, 59%, 68% and 56% (w/w) of respectively biomass, proteins, carbohydrates and lipids whereof 92%, 57% and 46% (w/w) respectively of phospho-, glyco- and neutral lipids.
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Affiliation(s)
- Emre Günerken
- Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium; Wageningen University, Bioprocess Engineering, AlgaePARC, P.O. Box 8129, 6700 EV Wageningen, Netherlands
| | - Els D'Hondt
- Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium.
| | - Michel Eppink
- Wageningen University, Bioprocess Engineering, AlgaePARC, P.O. Box 8129, 6700 EV Wageningen, Netherlands
| | - Kathy Elst
- Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium
| | - Rene Wijffels
- Wageningen University, Bioprocess Engineering, AlgaePARC, P.O. Box 8129, 6700 EV Wageningen, Netherlands
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265
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Chen L, Liu X, Li D, Chen W, Zhang K, Chen S. Preparation of stable microcapsules from disrupted cell ofHaematococcus pluvialisby spray drying. Int J Food Sci Technol 2016. [DOI: 10.1111/ijfs.13155] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Limei Chen
- Tianjin Key Laboratory for Industrial BioSystems and Bioprocessing Engineering; Tianjin Institute of Industrial Biotechnology; Chinese Academy of Sciences; Tianjin 300308 China
| | - Xiumin Liu
- Hebei Jiaotong Vocational & Technical College; Shijiazhuang 050035 China
| | - Demao Li
- Tianjin Key Laboratory for Industrial BioSystems and Bioprocessing Engineering; Tianjin Institute of Industrial Biotechnology; Chinese Academy of Sciences; Tianjin 300308 China
| | - Wuxi Chen
- Tianjin Key Laboratory for Industrial BioSystems and Bioprocessing Engineering; Tianjin Institute of Industrial Biotechnology; Chinese Academy of Sciences; Tianjin 300308 China
| | - Ke Zhang
- Tianjin Key Laboratory for Industrial BioSystems and Bioprocessing Engineering; Tianjin Institute of Industrial Biotechnology; Chinese Academy of Sciences; Tianjin 300308 China
| | - Shulin Chen
- Tianjin Key Laboratory for Industrial BioSystems and Bioprocessing Engineering; Tianjin Institute of Industrial Biotechnology; Chinese Academy of Sciences; Tianjin 300308 China
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266
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Lemahieu C, Bruneel C, Dejonghe C, Buyse J, Foubert I. The cell wall of autotrophic microalgae influences the enrichment of long chain omega-3 fatty acids in the egg. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.03.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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267
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268
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Golberg A, Sack M, Teissie J, Pataro G, Pliquett U, Saulis G, Stefan T, Miklavcic D, Vorobiev E, Frey W. Energy-efficient biomass processing with pulsed electric fields for bioeconomy and sustainable development. BIOTECHNOLOGY FOR BIOFUELS 2016; 9:94. [PMID: 27127539 PMCID: PMC4848877 DOI: 10.1186/s13068-016-0508-z] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 04/13/2016] [Indexed: 05/24/2023]
Abstract
Fossil resources-free sustainable development can be achieved through a transition to bioeconomy, an economy based on sustainable biomass-derived food, feed, chemicals, materials, and fuels. However, the transition to bioeconomy requires development of new energy-efficient technologies and processes to manipulate biomass feed stocks and their conversion into useful products, a collective term for which is biorefinery. One of the technological platforms that will enable various pathways of biomass conversion is based on pulsed electric fields applications (PEF). Energy efficiency of PEF treatment is achieved by specific increase of cell membrane permeability, a phenomenon known as membrane electroporation. Here, we review the opportunities that PEF and electroporation provide for the development of sustainable biorefineries. We describe the use of PEF treatment in biomass engineering, drying, deconstruction, extraction of phytochemicals, improvement of fermentations, and biogas production. These applications show the potential of PEF and consequent membrane electroporation to enable the bioeconomy and sustainable development.
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Affiliation(s)
- Alexander Golberg
- />Porter School of Environmental Studies, Tel Aviv University, Tel Aviv, Israel
| | - Martin Sack
- />Institute for Pulsed Power and Microwave Technology, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Justin Teissie
- />CNRS, Institut de Pharmacologie et de Biologie Structurale Université de Toulouse, Toulouse, France
| | - Gianpiero Pataro
- />Department of Industrial Engineering, University of Salerno, via Giovanni Paolo II 132, 84084 Fisciano, SA Italy
| | - Uwe Pliquett
- />Institut für Bioprozeβ- und Analysenmeβtechnik e.V., Heilbad Heiligenstadt, Germany
| | - Gintautas Saulis
- />Department of Biology, Faculty of Natural Sciences, Vytautas Magnus University, Kaunas, Lithuania
| | - Töpfl Stefan
- />German Institute of Food Technologies, Quakenbrück, Germany
| | - Damijan Miklavcic
- />Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia
| | - Eugene Vorobiev
- />Departement de Genie Chimique, Centre de Recherche de Royallieu, Universite de Technologie de Compiegne, Compiegne, France
| | - Wolfgang Frey
- />Institute for Pulsed Power and Microwave Technology, Karlsruhe Institute of Technology, Karlsruhe, Germany
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269
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Kokkinos D, Dakhil H, Wierschem A, Briesen H, Braun A. Deformation and rupture of Dunaliella salina at high shear rates without the use of thickeners. Biorheology 2016; 53:1-11. [PMID: 26967951 DOI: 10.3233/bir-15057] [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] [Indexed: 11/15/2022]
Abstract
BACKGROUND High-density cultures require operating below the critical threshold of shear stress, in order to avoid reducing the specific growth rate of the cells. When determining this threshold, direct inspection of the cells in flow provides insight into the conditions of shearing. OBJECTIVE Aim of this study was using a novel rheo-optical setup for the observation of cells in laminar shear flow and the determination of the critical shear stress required to damage them in their natural environment. METHODS Dunaliella salina cells were sheared and observed in flow for shear stresses of up to 90 Pa, at ambient temperature, without adding thickeners. The critical shear stress was determined by fitting a hydrodynamics-based criterion to the experimental data on the percentage of deformed cells after shearing. RESULTS Single cells, clusters and strings of cells were visible in shear flow. The strings formed at maximum shear stresses of 10 Pa or higher. Cells lost motility for maximum shear stresses higher than 15 Pa, and more than 80% of the cells were deformed at maximum shear stresses higher than 60 Pa. The estimated critical shear stress was 18 Pa. CONCLUSIONS Shear stresses higher than 18 Pa should be avoided when cultivating D. salina.
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Affiliation(s)
- Dimitrios Kokkinos
- Wissenschaftszentrum Weihenstephan für Ernährung und Landnutzung, Lehrstuhl für Systemverfahrenstechnik, Technical University of Munich (TUM), Freising, Germany
| | - Haider Dakhil
- Institute of Fluid Mechanics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.,Faculty of Engineering, University of Kufa, Kufa, Najaf, Iraq
| | - Andreas Wierschem
- Institute of Fluid Mechanics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Heiko Briesen
- Wissenschaftszentrum Weihenstephan für Ernährung und Landnutzung, Lehrstuhl für Systemverfahrenstechnik, Technical University of Munich (TUM), Freising, Germany
| | - André Braun
- Wissenschaftszentrum Weihenstephan für Ernährung und Landnutzung, Lehrstuhl für Systemverfahrenstechnik, Technical University of Munich (TUM), Freising, Germany
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270
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Evaluation of Cell Disruption of Chlorella Vulgaris by Pressure-Assisted Ozonation and Ultrasonication. ENERGIES 2016. [DOI: 10.3390/en9030173] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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271
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Postma PR, Pataro G, Capitoli M, Barbosa MJ, Wijffels RH, Eppink MHM, Olivieri G, Ferrari G. Selective extraction of intracellular components from the microalga Chlorella vulgaris by combined pulsed electric field-temperature treatment. BIORESOURCE TECHNOLOGY 2016; 203:80-8. [PMID: 26722806 DOI: 10.1016/j.biortech.2015.12.012] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 11/30/2015] [Accepted: 12/08/2015] [Indexed: 05/04/2023]
Abstract
The synergistic effect of temperature (25-65 °C) and total specific energy input (0.55-1.11 kWh kgDW(-1)) by pulsed electric field (PEF) on the release of intracellular components from the microalgae Chlorella vulgaris was studied. The combination of PEF with temperatures from 25 to 55 °C resulted in a conductivity increase of 75% as a result of cell membrane permeabilization. In this range of temperatures, 25-39% carbohydrates and 3-5% proteins release occurred and only for carbohydrate release a synergistic effect was observed at 55 °C. Above 55 °C spontaneous cell lysis occurred without PEF. Combined PEF-temperature treatment does not sufficiently disintegrate the algal cells to release both carbohydrates and proteins at yields comparable to the benchmark bead milling (40-45% protein, 48-58% carbohydrates).
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Affiliation(s)
- P R Postma
- Bioprocess Engineering, AlgaePARC, Wageningen University, PO Box 16, 6700 AA Wageningen, The Netherlands.
| | - G Pataro
- Department of Industrial Engineering, University of Salerno, via Giovanni Paolo II 132, Fisciano, SA, Italy.
| | - M Capitoli
- ProdAl Scarl - University of Salerno, via Ponte don Melillo, 84084 Fisciano, SA, Italy
| | - M J Barbosa
- Food & Biobased Reseach, AlgaePARC, Wageningen University and Research Centre, PO Box 17, 6700 AA Wageningen, The Netherlands
| | - R H Wijffels
- Bioprocess Engineering, AlgaePARC, Wageningen University, PO Box 16, 6700 AA Wageningen, The Netherlands; University of Nordland, Faculty of Biosciences and Aquaculture, N-8049 Bodø, Norway
| | - M H M Eppink
- Bioprocess Engineering, AlgaePARC, Wageningen University, PO Box 16, 6700 AA Wageningen, The Netherlands
| | - G Olivieri
- Bioprocess Engineering, AlgaePARC, Wageningen University, PO Box 16, 6700 AA Wageningen, The Netherlands
| | - G Ferrari
- Department of Industrial Engineering, University of Salerno, via Giovanni Paolo II 132, Fisciano, SA, Italy; ProdAl Scarl - University of Salerno, via Ponte don Melillo, 84084 Fisciano, SA, Italy
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272
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Hua L, Guo L, Thakkar M, Wei D, Agbakpe M, Kuang L, Magpile M, Chaplin BP, Tao Y, Shuai D, Zhang X, Mitra S, Zhang W. Effects of anodic oxidation of a substoichiometric titanium dioxide reactive electrochemical membrane on algal cell destabilization and lipid extraction. BIORESOURCE TECHNOLOGY 2016; 203:112-117. [PMID: 26722810 DOI: 10.1016/j.biortech.2015.12.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 12/14/2015] [Accepted: 12/15/2015] [Indexed: 06/05/2023]
Abstract
Efficient algal harvesting, cell pretreatment and lipid extraction are the major steps challenging the algal biofuel industrialization. To develop sustainable solutions for economically viable algal biofuels, our research aims at devising innovative reactive electrochemical membrane (REM) filtration systems for simultaneous algal harvesting and pretreatment for lipid extraction. The results in this work particularly demonstrated the use of the Ti4O7-based REM in algal pretreatment and the positive impacts on lipid extraction. After REM treatment, algal cells exhibited significant disruption in morphology and photosynthetic activity due to the anodic oxidation. Cell lysis was evidenced by the changes of fluorescent patterns of dissolved organic matter (DOM) in the treated algal suspension. The lipid extraction efficiency increased from 15.2 ± 0.6 g-lipidg-algae(-1) for untreated algae to 23.4 ± 0.7 g-lipidg-algae(-1) for treated algae (p<0.05), which highlights the potential to couple algal harvesting with cell pretreatment in an integrated REM filtration process.
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Affiliation(s)
- Likun Hua
- John A. Reif, Jr. Department of Civil & Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States
| | - Lun Guo
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, IL 60607, United States
| | - Megha Thakkar
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, United States
| | - Dequan Wei
- Research Center of Environmental Engineering & Management, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China
| | - Michael Agbakpe
- John A. Reif, Jr. Department of Civil & Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States
| | - Liyuan Kuang
- John A. Reif, Jr. Department of Civil & Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States
| | - Maraha Magpile
- John A. Reif, Jr. Department of Civil & Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States
| | - Brian P Chaplin
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, IL 60607, United States
| | - Yi Tao
- Research Center of Environmental Engineering & Management, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China
| | - Danmeng Shuai
- Department of Civil and Environmental Engineering, The George Washington University, Washington, DC 20052, United States
| | - Xihui Zhang
- Research Center of Environmental Engineering & Management, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China
| | - Somenath Mitra
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, United States
| | - Wen Zhang
- John A. Reif, Jr. Department of Civil & Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, United States.
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273
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Repeated cultivation: non-cell disruption extraction of astaxanthin for Haematococcus pluvialis. Sci Rep 2016; 6:20578. [PMID: 26838183 PMCID: PMC4738327 DOI: 10.1038/srep20578] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 01/06/2016] [Indexed: 11/19/2022] Open
Abstract
The operation of cell disruption is indispensable but cost much in microalgae industry. To be simplified, two different reaction mechanisms await in the cell to respond to moderated or stressed environment. The physical and chemical changes of enzyme and turgor pressure of cell in this conversion play an important role in the enhancement of biomass and metabolites. Repeated turgor pressure (based on the structure and mechanics of cell wall) and converted enzyme system (based on photosynthesis) were used to loosen cell wall and then repeated cultivation of Haematococcus pluvialis for astaxanthin extraction was proposed. There was no significant difference of extraction yield between the broken cell (94.75 ± 3.13%) and non-broken cell (92.32 ± 3.24%) treated by the repeated cultivation. Meanwhile, fed-batch culture according to the relationship among pH and nutrient concentration was used to enhance the biomass of Haematococcus pluvialis with the dry cell weight of 1.63 ± 0.07 g/L.
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274
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Juang YJ, Chang JS. Applications of microfluidics in microalgae biotechnology: A review. Biotechnol J 2016; 11:327-35. [DOI: 10.1002/biot.201500278] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 10/29/2015] [Accepted: 12/25/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Yi-Je Juang
- Department of Chemical Engineering; National Cheng Kung University; Tainan Taiwan
| | - Jo-Shu Chang
- Department of Chemical Engineering; National Cheng Kung University; Tainan Taiwan
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275
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Affiliation(s)
- Sanjin Hosic
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
| | - Shashi K. Murthy
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
- Barnett Institute of Chemical and Biological Analysis, Northeastern University, Boston, MA, USA
| | - Abigail N. Koppes
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
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276
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Passos F, Hom-Diaz A, Blanquez P, Vicent T, Ferrer I. Improving biogas production from microalgae by enzymatic pretreatment. BIORESOURCE TECHNOLOGY 2016; 199:347-351. [PMID: 26343574 DOI: 10.1016/j.biortech.2015.08.084] [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: 06/11/2015] [Revised: 08/21/2015] [Accepted: 08/22/2015] [Indexed: 05/16/2023]
Abstract
In this study, enzymatic pretreatment of microalgal biomass was investigated under different conditions and evaluated using biochemical methane potential (BMP) tests. Cellulase, glucohydrolase and an enzyme mix composed of cellulase, glucohydrolase and xylanase were selected based on the microalgae cell wall composition (cellulose, hemicellulose, pectin and glycoprotein). All of them increased organic matter solubilisation, obtaining high values already after 6h of pretreatment with an enzyme dose of 1% for cellulase and the enzyme mix. BMP tests with pretreated microalgae showed a methane yield increase of 8 and 15% for cellulase and the enzyme mix, respectively. Prospective research should evaluate enzymatic pretreatments in continuous anaerobic reactors so as to estimate the energy balance and economic cost of the process.
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Affiliation(s)
- Fabiana Passos
- GEMMA - Environmental Engineering and Microbiology Research Group, Department of Hydraulic, Maritime and Environmental Engineering, Universitat Politècnica de Catalunya·BarcelonaTech, c/ Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain; Environmental and Chemical Technology Group, Department of Chemistry, Universidade Federal de Ouro Preto, 35400-000 Ouro Preto, Minas Gerais, Brazil
| | - Andrea Hom-Diaz
- Department of Chemical Engineering, Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola, Barcelona, Spain
| | - Paqui Blanquez
- Department of Chemical Engineering, Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola, Barcelona, Spain
| | - Teresa Vicent
- Department of Chemical Engineering, Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola, Barcelona, Spain
| | - Ivet Ferrer
- GEMMA - Environmental Engineering and Microbiology Research Group, Department of Hydraulic, Maritime and Environmental Engineering, Universitat Politècnica de Catalunya·BarcelonaTech, c/ Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain.
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277
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Karemore A, Sen R. Downstream processing of microalgal feedstock for lipid and carbohydrate in a biorefinery concept: a holistic approach for biofuel applications. RSC Adv 2016. [DOI: 10.1039/c6ra01477a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Downstream processing of algal biomass for conversion into biofuel products biodiesel and bioethanol in an integrated mode to develop a microalgae based biorefinery.
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Affiliation(s)
- Ankush Karemore
- Department of Biotechnology
- Indian Institute of Technology Kharagpur
- India
| | - Ramkrishna Sen
- Department of Biotechnology
- Indian Institute of Technology Kharagpur
- India
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278
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Kim DY, Vijayan D, Praveenkumar R, Han JI, Lee K, Park JY, Chang WS, Lee JS, Oh YK. Cell-wall disruption and lipid/astaxanthin extraction from microalgae: Chlorella and Haematococcus. BIORESOURCE TECHNOLOGY 2016; 199:300-310. [PMID: 26342788 DOI: 10.1016/j.biortech.2015.08.107] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 08/18/2015] [Accepted: 08/19/2015] [Indexed: 06/05/2023]
Abstract
Recently, biofuels and nutraceuticals produced from microalgae have emerged as major interests, resulting in intensive research of the microalgal biorefinery process. In this paper, recent developments in cell-wall disruption and extraction methods are reviewed, focusing on lipid and astaxanthin production from the biotechnologically important microalgae Chlorella and Haematococcus, respectively. As a common, critical bottleneck for recovery of intracellular components such as lipid and astaxanthin from these microalgae, the composition and structure of rigid, thick cell-walls were analyzed. Various chemical, physical, physico-chemical, and biological methods applied for cell-wall breakage and lipid/astaxanthin extraction from Chlorella and Haematococcus are discussed in detail and compared based on efficiency, energy consumption, type and dosage of solvent, biomass concentration and status (wet/dried), toxicity, scalability, and synergistic combinations. This report could serve as a useful guide to the implementation of practical downstream processes for recovery of valuable products from microalgae including Chlorella and Haematococcus.
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Affiliation(s)
- Dong-Yeon Kim
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Durairaj Vijayan
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Ramasamy Praveenkumar
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Jong-In Han
- Department of Civil and Environmental Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Kyubock Lee
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Ji-Yeon Park
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Won-Seok Chang
- Korea District Heating Corp., Bungdang-dong, Seongnam-si, Gyoenggi-do 463-908, Republic of Korea
| | - Jin-Suk Lee
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - You-Kwan Oh
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea.
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279
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Wang W, Lee DJ, Lai JY. Aggregate formation affects ultrasonic disruption of microalgal cells. BIORESOURCE TECHNOLOGY 2015; 198:907-912. [PMID: 26452711 DOI: 10.1016/j.biortech.2015.09.099] [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: 08/13/2015] [Revised: 09/20/2015] [Accepted: 09/22/2015] [Indexed: 06/05/2023]
Abstract
Ultrasonication is a cell disruption process of low energy efficiency. This study dosed K(+), Ca(2+) and Al(3+) to Chlorella vulgaris cultured in Bold's Basal Medium at 25°C and measured the degree of cell disruption under ultrasonication. Adding these metal ions yielded less negatively charged surfaces of cells, while with the latter two ions large and compact cell aggregates were formed. The degree of cell disruption followed: control=K(+)>Ca(2+)>Al(3+) samples. Surface charges of cells and microbubbles have minimal effects on the microbubble number in the proximity of the microalgal cells. Conversely, cell aggregates with large size and compact interior resist cell disruption under ultrasonication. Staining tests revealed high diffusional resistance of stains over the aggregate interior. Microbubbles may not be effective generated and collapsed inside the compact aggregates, hence leading to low cell disruption efficiencies. Effective coagulation/flocculation in cell harvesting may lead to adverse effect on subsequent cell disruption efficiency.
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Affiliation(s)
- Wei Wang
- Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Duu-Jong Lee
- Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10617, Taiwan.
| | - Juin-Yih Lai
- R&D Center for Membrane Technology, Department of Chemical Engineering, Chung Yuan Christian University, Chungli, Taiwan
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280
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Choi YY, Hong ME, Sim SJ. Enhanced astaxanthin extraction efficiency from Haematococcus pluvialis via the cyst germination in outdoor culture systems. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.09.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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281
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Van Den Hende S, Laurent C, Bégué M. Anaerobic digestion of microalgal bacterial flocs from a raceway pond treating aquaculture wastewater: need for a biorefinery. BIORESOURCE TECHNOLOGY 2015; 196:184-93. [PMID: 26241837 DOI: 10.1016/j.biortech.2015.07.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 07/15/2015] [Accepted: 07/17/2015] [Indexed: 05/12/2023]
Abstract
An outdoor raceway pond with microalgal bacterial flocs (MaB-flocs) is a novel sunlight-based system to treat pikeperch aquaculture wastewater while producing biomass. The harvested MaB-floc biomass (33tonTSha(-1)y(-1)) needs further valorization. Therefore, the biochemical methane yield (BMY) of MaB-floc biomass was determined in batch experiments. The results show significant differences between the BMY of MaB-flocs amongst their harvest dates (128-226NLCH4kg(-1)VS), a low anaerobic digestion conversion efficiency (25.0-36.2%), a moderate chlorophyll a removal (51.5-86.9%) and a low biogas profit (<0.01€m(-3)wastewater). None of the pretreatment methods screened (freezing, thermal, microwave, ultrasonic and chlorination, flue gas sparging, and acid) can be recommended due to a low BMY improvement and/or unfavorable energy balance. Therefore, anaerobic digestion of this MaB-floc biomass should only be granted a supporting role within a biorefinery concept.
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Affiliation(s)
- Sofie Van Den Hende
- Laboratory of Industrial Water and Ecotechnology (LIWET), Department of Industrial Biological Sciences, Ghent University, Graaf Karel de Goedelaan 5, B-8500 Kortrijk, Belgium.
| | - Cedric Laurent
- Laboratory of Industrial Water and Ecotechnology (LIWET), Department of Industrial Biological Sciences, Ghent University, Graaf Karel de Goedelaan 5, B-8500 Kortrijk, Belgium
| | - Marine Bégué
- Laboratory of Industrial Water and Ecotechnology (LIWET), Department of Industrial Biological Sciences, Ghent University, Graaf Karel de Goedelaan 5, B-8500 Kortrijk, Belgium; Ecole des Métiers de l'Environnement (EME), Avenue Robert Schuman, F-35170 Bruz, France
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282
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Montalescot V, Rinaldi T, Touchard R, Jubeau S, Frappart M, Jaouen P, Bourseau P, Marchal L. Optimization of bead milling parameters for the cell disruption of microalgae: process modeling and application to Porphyridium cruentum and Nannochloropsis oculata. BIORESOURCE TECHNOLOGY 2015; 196:339-346. [PMID: 26253918 DOI: 10.1016/j.biortech.2015.07.075] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 07/20/2015] [Accepted: 07/21/2015] [Indexed: 06/04/2023]
Abstract
A study of cell disruption by bead milling for two microalgae, Nannochloropsis oculata and Porphyridium cruentum, was performed. Strains robustness was quantified by high-pressure disruption assays. The hydrodynamics in the bead mill grinding chamber was studied by Residence Time Distribution modeling. Operating parameters effects were analyzed and modeled in terms of stress intensities and stress number. RTD corresponded to a 2 CSTR in series model. First order kinetics cell disruption was modeled in consequence. Continuous bead milling was efficient for both strains disruption. SI-SN modeling was successfully adapted to microalgae. As predicted by high pressure assays, N. oculata was more resistant than P. cruentum. The critical stress intensity was twice more important for N. oculata than for P. cruentum. SI-SN modeling allows the determination of operating parameters minimizing energy consumption and gives a scalable approach to develop and optimize microalgal disruption by bead milling.
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Affiliation(s)
- V Montalescot
- Université de Nantes, CNRS, GEPEA, UMR-CNRS 6144, bd de l'Université, CRTT-BP 406, 44602 Saint-Nazaire Cedex, France
| | - T Rinaldi
- AlgoSource Technologies, 37 Bd de l'Université, 44600 Saint-Nazaire, France
| | - R Touchard
- Université de Nantes, CNRS, GEPEA, UMR-CNRS 6144, bd de l'Université, CRTT-BP 406, 44602 Saint-Nazaire Cedex, France
| | - S Jubeau
- AlgoSource Technologies, 37 Bd de l'Université, 44600 Saint-Nazaire, France
| | - M Frappart
- Université de Nantes, CNRS, GEPEA, UMR-CNRS 6144, bd de l'Université, CRTT-BP 406, 44602 Saint-Nazaire Cedex, France
| | - P Jaouen
- Université de Nantes, CNRS, GEPEA, UMR-CNRS 6144, bd de l'Université, CRTT-BP 406, 44602 Saint-Nazaire Cedex, France
| | - P Bourseau
- Université de Nantes, CNRS, GEPEA, UMR-CNRS 6144, bd de l'Université, CRTT-BP 406, 44602 Saint-Nazaire Cedex, France; UBS Université de Bretagne Sud, LIMATB, rue de Saint-Maudé, BP 92116, 56321 Lorient, France
| | - L Marchal
- Université de Nantes, CNRS, GEPEA, UMR-CNRS 6144, bd de l'Université, CRTT-BP 406, 44602 Saint-Nazaire Cedex, France
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283
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Demuez M, Mahdy A, Tomás-Pejó E, González-Fernández C, Ballesteros M. Enzymatic cell disruption of microalgae biomass in biorefinery processes. Biotechnol Bioeng 2015; 112:1955-66. [DOI: 10.1002/bit.25644] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 05/05/2015] [Accepted: 05/06/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Marie Demuez
- IMDEA Energy Institute; Biotechnological Processes for Energy Production Unit; Av. Ramón de la Sagra 3 28935 Móstoles Spain
| | - Ahmed Mahdy
- IMDEA Energy Institute; Biotechnological Processes for Energy Production Unit; Av. Ramón de la Sagra 3 28935 Móstoles Spain
- Department of Agricultural Microbiology; Faculty of Agriculture; Zagazig University; 44511 Zagazig Egypt
| | - Elia Tomás-Pejó
- IMDEA Energy Institute; Biotechnological Processes for Energy Production Unit; Av. Ramón de la Sagra 3 28935 Móstoles Spain
| | - Cristina González-Fernández
- IMDEA Energy Institute; Biotechnological Processes for Energy Production Unit; Av. Ramón de la Sagra 3 28935 Móstoles Spain
| | - Mercedes Ballesteros
- IMDEA Energy Institute; Biotechnological Processes for Energy Production Unit; Av. Ramón de la Sagra 3 28935 Móstoles Spain
- CIEMAT; Renewable Energy Division; Biofuels Unit; Av. Complutense 40 28040 Madrid Spain
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284
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Combined enzymatic and mechanical cell disruption and lipid extraction of green alga Neochloris oleoabundans. Int J Mol Sci 2015; 16:7707-22. [PMID: 25853267 PMCID: PMC4425044 DOI: 10.3390/ijms16047707] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 03/17/2015] [Accepted: 03/27/2015] [Indexed: 11/28/2022] Open
Abstract
Microalgal biodiesel is one of the most promising renewable fuels. The wet technique for lipids extraction has advantages over the dry method, such as energy-saving and shorter procedure. The cell disruption is a key factor in wet oil extraction to facilitate the intracellular oil release. Ultrasonication, high-pressure homogenization, enzymatic hydrolysis and the combination of enzymatic hydrolysis with high-pressure homogenization and ultrasonication were employed in this study to disrupt the cells of the microalga Neochloris oleoabundans. The cell disruption degree was investigated. The cell morphology before and after disruption was assessed with scanning and transmission electron microscopy. The energy requirements and the operation cost for wet cell disruption were also estimated. The highest disruption degree, up to 95.41%, assessed by accounting method was achieved by the combination of enzymatic hydrolysis and high-pressure homogenization. A lipid recovery of 92.6% was also obtained by the combined process. The combined process was found to be more efficient and economical compared with the individual process.
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