101
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Farooq W, Mishra SK, Moon M, Suh WI, Shrivastav A, Kumar K, Kwon JH, Park MS, Yang JW. Energy efficient process for microalgae cell disruption for oil recovery using triiodide resin. ALGAL RES 2016. [DOI: 10.1016/j.algal.2015.11.007] [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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102
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Yang YH, Klinthong W, Tan CS. Optimization of continuous lipid extraction from Chlorella vulgaris by CO₂-expanded methanol for biodiesel production. BIORESOURCE TECHNOLOGY 2015; 198:550-556. [PMID: 26433151 DOI: 10.1016/j.biortech.2015.09.076] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 09/21/2015] [Indexed: 06/05/2023]
Abstract
CO2-expanded methanol (CXM) was used to extract lipids from the microalgae Chlorella vulgaris (a total lipid content of 20.7% was determined by Soxhlet extraction with methanol at 373 K for 96 h) in a continuous mode. The CXM was found to be a superior solvent to methanol, ethanol, pressurized methanol and ethanol, and CO2-expanded ethanol for lipid extraction. The effects of operation variables including temperature, pressure and CO2 flow rate on extraction performance were examined using the response surface and contour plot methodologies. The optimal operating conditions were at a pressure of 5.5 MPa, a temperature of 358 K, a methanol flow rate of 1 mL/min and a CO2 flow rate of 3.0 mL/min, providing an extracted lipid yield of 84.8 wt% over an extraction period of 30 min. Compared with propane methanol mixture, CXM was safer and more energy efficient for lipid extraction from C. vulgaris.
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Affiliation(s)
- Yi-Hung Yang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Worasaung Klinthong
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Chung-Sung Tan
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC.
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103
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Wang L, Wang Z, Yuan Y, Cai R, Niu C, Yue T. Identification of Key Factors Involved in the Biosorption of Patulin by Inactivated Lactic Acid Bacteria (LAB) Cells. PLoS One 2015; 10:e0143431. [PMID: 26581099 PMCID: PMC4651504 DOI: 10.1371/journal.pone.0143431] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Accepted: 11/04/2015] [Indexed: 11/19/2022] Open
Abstract
The purpose of this study was to identify the key factors involved in patulin adsorption by heat-inactivated lactic acid bacteria (LAB) cells. For preventing bacterial contamination, a sterilization process was involved in the adsorption process. The effects of various physical, chemical, and enzymatic pre-treatments, simultaneous treatments, and post-treatments on the patulin adsorption performances of six LAB strains were evaluated. The pre-treated cells were characterized by scanning electron microscopy (SEM). Results showed that the removal of patulin by viable cells was mainly based on adsorption or degradation, depending on the specific strain. The adsorption abilities were widely increased by NaOH and esterification pre-treatments, and reduced by trypsin, lipase, iodate, and periodate pre-treatments. Additionally, the adsorption abilities were almost maintained at pH 2.2-4.0, and enhanced significantly at pH 4.0-6.0. The effects of sodium and magnesium ions on the adsorption abilities at pH 4 were slight and strain-specific. A lower proportion of patulin was released from the strain with higher adsorption ability. Analyses revealed that the physical structure of peptidoglycan was not a principal factor. Vicinal OH and carboxyl groups were not involved in patulin adsorption, while alkaline amino acids, thiol and ester compounds were important for patulin adsorption. Additionally, besides hydrophobic interaction, electrostatic interaction also participated in patulin adsorption, which was enhanced with the increase in pH (4.0-6.0).
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Affiliation(s)
- Ling Wang
- College of Food Science and Engineering, Northwest A & F University, Yangling, Shaanxi, 712100, China
| | - Zhouli Wang
- College of Food Science and Engineering, Northwest A & F University, Yangling, Shaanxi, 712100, China
| | - Yahong Yuan
- College of Food Science and Engineering, Northwest A & F University, Yangling, Shaanxi, 712100, China
| | - Rui Cai
- College of Food Science and Engineering, Northwest A & F University, Yangling, Shaanxi, 712100, China
| | - Chen Niu
- College of Food Science and Engineering, Northwest A & F University, Yangling, Shaanxi, 712100, China
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A & F University, Yangling, Shaanxi, 712100, China
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104
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Stupak R, Makauskas N, Radzevičius K, Valančius Z. Optimization of intracellular product release from Neisseria denitrificans using microfluidizer. Prep Biochem Biotechnol 2015; 45:667-83. [PMID: 25036157 DOI: 10.1080/10826068.2014.940539] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Disruption of Neisseria denitrificans cells by microfluidizer was optimized using a factorial experiments design. The pH, pretreatment time, cell concentration, NaCl, ethylenediamine tetraacetic acid (EDTA) and Triton X-100 concentrations showed significant impact on disruption process and the process was optimized using central composite design and response surface methodology (RSM). Investigation revealed optimum conditions: 90 min pretreatment at pH 9.0 containing 110 g L(-1) cells (dry cell weight), 50 mM NaCl, 10 mM EDTA, and 0.2% Triton X-100. At optimized conditions, the disruption rate increased twofold, up to 5.62 ± 0.27 × 10(-3) MPa(-a); meanwhile, yield of intracellular content was increased by 26%, with 1 g of cells resulting in 113.2 ± 8.2 mg proteins, 12.1 ± 0.7 mg nucleic acids, 21.0 ± 1.2 mg polysaccharides, 0.99 ± 0.08 kU glucose-6-phosphate dehydrogenase (G6PD), and 10,100 ± 110 kU restriction endonuclease NdeI endonuclease. Particle size distribution analysis revealed nearly twofold larger cell lysate particles with diameter of 120 nm. For optimal release of intracellular content, 9200 J/g of energy was needed (95% confidence), yielding 6900 J/g energy savings. Model equations generated from RSM on cell disruption of N. denitrificans were found adequate to determine significant factors and its interaction. The results showed that optimized combination of known pretreatment and disruption methods could considerably improve cell disruption efficiency.
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Affiliation(s)
- Robert Stupak
- a Department of Chemical Technology , Kaunas University of Technology , Kaunas , Lithuania
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105
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Serrazanetti DI, Patrignani F, Russo A, Vannini L, Siroli L, Gardini F, Lanciotti R. Cell membrane fatty acid changes and desaturase expression of Saccharomyces bayanus exposed to high pressure homogenization in relation to the supplementation of exogenous unsaturated fatty acids. Front Microbiol 2015; 6:1105. [PMID: 26528258 PMCID: PMC4600958 DOI: 10.3389/fmicb.2015.01105] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 09/25/2015] [Indexed: 11/13/2022] Open
Abstract
Aims: The aim of this work was to study the responses of Saccharomyces bayanus cells exposed to sub-lethal high-pressure homogenization (HPH) and determine whether the plasmatic membrane can sense HPH in the presence, or absence, of exogenous unsaturated fatty acids (UFAs) in the growth medium. Methods and Results: High-pressure homogenization damaged and caused the collapse of cell walls and membranes of a portion of cells; however, HPH did not significantly affect S. bayanus cell viability (less than 0.3 Log CFU ml-1). HPH strongly affected the membrane fatty acid (FA) composition by increasing the percentage of total UFA when compared with saturated fatty acids. The gene expression showed that the transcription of OLE1, ERG3, and ERG11 increased after HPH. The presence of exogenous UFA abolished HPH-induced effects on the OLE1 and ERG3 genes, increased the percentage of membrane lipids and decreased the expression of OLE1 and ERG3 within 30 min of treatment. Conclusion: The results suggest a key role for UFA in the microbial cell response to sub-lethal stress. In addition, these data provide insight into the molecular basis of the response of S. bayanus to this innovative technology. Significance and Impact of the Study: Elucidation of the mechanism of action for sub-lethal HPH will enable the utilization of this technology to modulate the starter performance at the industrial scale.
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Affiliation(s)
- Diana I Serrazanetti
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Università degli Studi di Bologna Cesena, Italy
| | - Francesca Patrignani
- Dipartimento di Scienze e Tecnologie Agro-alimentari, Università degli Studi di Bologna Cesena, Italy
| | - Alessandra Russo
- Servizio Sanitario Regionale, Azienda Unità Sanitaria Locale di Imola Imola, Italy
| | - Lucia Vannini
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Università degli Studi di Bologna Cesena, Italy ; Dipartimento di Scienze e Tecnologie Agro-alimentari, Università degli Studi di Bologna Cesena, Italy
| | - Lorenzo Siroli
- Dipartimento di Scienze e Tecnologie Agro-alimentari, Università degli Studi di Bologna Cesena, Italy
| | - Fausto Gardini
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Università degli Studi di Bologna Cesena, Italy ; Dipartimento di Scienze e Tecnologie Agro-alimentari, Università degli Studi di Bologna Cesena, Italy
| | - Rosalba Lanciotti
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Università degli Studi di Bologna Cesena, Italy ; Dipartimento di Scienze e Tecnologie Agro-alimentari, Università degli Studi di Bologna Cesena, Italy
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106
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Naveena B, Armshaw P, Tony Pembroke J. Ultrasonic intensification as a tool for enhanced microbial biofuel yields. BIOTECHNOLOGY FOR BIOFUELS 2015; 8:140. [PMID: 26379772 PMCID: PMC4570611 DOI: 10.1186/s13068-015-0321-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 08/19/2015] [Indexed: 05/09/2023]
Abstract
Ultrasonication has recently received attention as a novel bioprocessing tool for process intensification in many areas of downstream processing. Ultrasonic intensification (periodic ultrasonic treatment during the fermentation process) can result in a more effective homogenization of biomass and faster energy and mass transfer to biomass over short time periods which can result in enhanced microbial growth. Ultrasonic intensification can allow the rapid selective extraction of specific biomass components and can enhance product yields which can be of economic benefit. This review focuses on the role of ultrasonication in the extraction and yield enhancement of compounds from various microbial sources, specifically algal and cyanobacterial biomass with a focus on the production of biofuels. The operating principles associated with the process of ultrasonication and the influence of various operating conditions including ultrasonic frequency, power intensity, ultrasonic duration, reactor designs and kinetics applied for ultrasonic intensification are also described.
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Affiliation(s)
- Balakrishnan Naveena
- Molecular Biochemistry Laboratory, Materials and Surface Science Institute, Department of Chemical and Environmental Sciences, University of Limerick, Limerick, Ireland
| | - Patricia Armshaw
- Molecular Biochemistry Laboratory, Materials and Surface Science Institute, Department of Chemical and Environmental Sciences, University of Limerick, Limerick, Ireland
| | - J. Tony Pembroke
- Molecular Biochemistry Laboratory, Materials and Surface Science Institute, Department of Chemical and Environmental Sciences, University of Limerick, Limerick, Ireland
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107
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Garcia-Ortega X, Reyes C, Montesinos JL, Valero F. Overall Key Performance Indicator to Optimizing Operation of High-Pressure Homogenizers for a Reliable Quantification of Intracellular Components in Pichia pastoris. Front Bioeng Biotechnol 2015; 3:107. [PMID: 26284241 PMCID: PMC4522904 DOI: 10.3389/fbioe.2015.00107] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 07/10/2015] [Indexed: 11/13/2022] Open
Abstract
The most commonly used cell disruption procedures may present lack of reproducibility, which introduces significant errors in the quantification of intracellular components. In this work, an approach consisting in the definition of an overall key performance indicator (KPI) was implemented for a lab scale high-pressure homogenizer (HPH) in order to determine the disruption settings that allow the reliable quantification of a wide sort of intracellular components. This innovative KPI was based on the combination of three independent reporting indicators: decrease of absorbance, release of total protein, and release of alkaline phosphatase activity. The yeast Pichia pastoris growing on methanol was selected as model microorganism due to it presents an important widening of the cell wall needing more severe methods and operating conditions than Escherichia coli and Saccharomyces cerevisiae. From the outcome of the reporting indicators, the cell disruption efficiency achieved using HPH was about fourfold higher than other lab standard cell disruption methodologies, such bead milling cell permeabilization. This approach was also applied to a pilot plant scale HPH validating the methodology in a scale-up of the disruption process. This innovative non-complex approach developed to evaluate the efficacy of a disruption procedure or equipment can be easily applied to optimize the most common disruption processes, in order to reach not only reliable quantification but also recovery of intracellular components from cell factories of interest.
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Affiliation(s)
- Xavier Garcia-Ortega
- Bioprocess Engineering and Applied Biocatalysis Group, Departament d'Enginyeria Química, Escola d'Enginyeria, Universitat Autònoma de Barcelona , Bellaterra , Spain
| | - Cecilia Reyes
- Bioprocess Engineering and Applied Biocatalysis Group, Departament d'Enginyeria Química, Escola d'Enginyeria, Universitat Autònoma de Barcelona , Bellaterra , Spain
| | - José Luis Montesinos
- Bioprocess Engineering and Applied Biocatalysis Group, Departament d'Enginyeria Química, Escola d'Enginyeria, Universitat Autònoma de Barcelona , Bellaterra , Spain
| | - Francisco Valero
- Bioprocess Engineering and Applied Biocatalysis Group, Departament d'Enginyeria Química, Escola d'Enginyeria, Universitat Autònoma de Barcelona , Bellaterra , Spain
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108
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Haberl Meglic S, Marolt T, Miklavcic D. Protein Extraction by Means of Electroporation from E. coli with Preserved Viability. J Membr Biol 2015. [PMID: 26201287 DOI: 10.1007/s00232-015-9824-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Extracting proteins by means of electroporation from different microorganisms is gaining on its importance, as electroporation is a quick, chemical-free, and cost-effective method. Since complete cell destruction (to obtain proteins) necessitates additional work, and cost of purifying the end-product is high, pulses have to be adjusted in order to prevent total disintegration. Namely, total disintegration of the cell releases bacterial membrane contaminants in the final sample. Therefore, our goal was to study different electric pulse parameters in order to extract as much proteins as possible from E. coli bacteria, while preserving bacterial viability. Our results show that by increasing electric field strength the concentration of extracted proteins increases and viability reduces. The correlation is reasonable, since high electric field destroys bacterial envelope, releasing all intracellular components into surrounding media. The strong correlation was also found with pulse duration. However, at longer pulses we obtained more proteins, while bacterial viability was not as much affected. Pulse number and/or pulse repetition frequency at our conditions have no or little effect on concentration of extracted proteins and/or bacterial viability. We can conclude that the most promising pulse protocol for protein extraction by means of electroporation based on our experience would be longer pulses with lower pulse amplitude assuring high protein yield and low effect on bacterial viability.
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Affiliation(s)
- Sasa Haberl Meglic
- Laboratory of Biocybernetics, Faculty of Electrical Engineering, University of Ljubljana, Trzaska 25, 1000, Ljubljana, Slovenia
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109
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Overton TW, Lu T, Bains N, Leeke GA. Reduction of aerobic and lactic acid bacteria in dairy desludge using an integrated compressed CO 2 and ultrasonic process. DAIRY SCIENCE & TECHNOLOGY 2015; 95:733-745. [PMID: 27034747 PMCID: PMC4768234 DOI: 10.1007/s13594-015-0241-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Revised: 06/11/2015] [Accepted: 06/15/2015] [Indexed: 11/24/2022]
Abstract
Current treatment routes are not suitable to reduce and stabilise bacterial content in some dairy process streams such as separator and bactofuge desludges which currently present a major emission problem faced by dairy producers. In this study, a novel method for the processing of desludge was developed. The new method, elevated pressure sonication (EPS), uses a combination of low frequency ultrasound (20 kHz) and elevated CO2 pressure (50 to 100 bar). Process conditions (pressure, sonicator power, processing time) were optimised for batch and continuous EPS processes to reduce viable numbers of aerobic and lactic acid bacteria in bactofuge desludge by ≥3-log fold. Coagulation of proteins present in the desludge also occurred, causing separation of solid (curd) and liquid (whey) fractions. The proposed process offers a 10-fold reduction in energy compared to high temperature short time (HTST) treatment of milk.
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Affiliation(s)
- Tim W. Overton
- />School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT UK
- />Institute of Microbiology & Infection, University of Birmingham, Edgbaston, Birmingham, B15 2TT UK
| | - Tiejun Lu
- />School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT UK
| | - Narinder Bains
- />Sere-Tech Innovation Ltd., Sutton Coldfield, Birmingham, B74 2AD UK
| | - Gary A. Leeke
- />School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT UK
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110
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Shene C, Monsalve MT, Vergara D, Lienqueo ME, Rubilar M. High pressure homogenization ofNannochloropsis oculatafor the extraction of intracellular components: Effect of process conditions and culture age. EUR J LIPID SCI TECH 2015. [DOI: 10.1002/ejlt.201500011] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Carolina Shene
- Department of Chemical Engineering, Center of Food Biotechnology and Bioseparations, BIOREN; Universidad de La Frontera; Temuco Chile
- Centre for Biotechnology and Bioengineering (CeBiB); Universidad de La Frontera; Temuco Chile
| | - María Teresa Monsalve
- Department of Chemical Engineering, Center of Food Biotechnology and Bioseparations, BIOREN; Universidad de La Frontera; Temuco Chile
| | - Daniela Vergara
- Department of Chemical Engineering, Center of Food Biotechnology and Bioseparations, BIOREN; Universidad de La Frontera; Temuco Chile
| | - María Elena Lienqueo
- Department of Chemical Engineering and Biotechnology; Centre for Biotechnology and Bioengineering (CeBiB), University of Chile; Santiago Chile
| | - Mónica Rubilar
- Department of Chemical Engineering, Center of Food Biotechnology and Bioseparations, BIOREN; Universidad de La Frontera; Temuco Chile
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111
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Cvetković M, Kompare B, Klemenčič AK. Application of hydrodynamic cavitation in ballast water treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:7422-7438. [PMID: 25810104 DOI: 10.1007/s11356-015-4360-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 03/11/2015] [Indexed: 06/04/2023]
Abstract
Ballast water is, together with hull fouling and aquaculture, considered the most important factor of the worldwide transfer of invasive non-indigenous organisms in aquatic ecosystems and the most important factor in European Union. With the aim of preventing and halting the spread of the transfer of invasive organisms in aquatic ecosystems and also in accordance with IMO's International Convention for the Control and Management of Ships Ballast Water and Sediments, the systems for ballast water treatment, whose work includes, e.g. chemical treatment, ozonation and filtration, are used. Although hydrodynamic cavitation (HC) is used in many different areas, such as science and engineering, implied acoustics, biomedicine, botany, chemistry and hydraulics, the application of HC in ballast water treatment area remains insufficiently researched. This paper presents the first literature review that studies lab- and large-scale setups for ballast water treatment together with the type-approved systems currently available on the market that use HC as a step in their operation. This paper deals with the possible advantages and disadvantages of such systems, as well as their influence on the crew and marine environment. It also analyses perspectives on the further development and application of HC in ballast water treatment.
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Affiliation(s)
- Martina Cvetković
- Institute of Sanitary Engineering, Faculty of Civil and Geodetic Engineering, University of Ljubljana, Ljubljana, Slovenia,
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112
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Show KY, Lee DJ, Tay JH, Lee TM, Chang JS. Microalgal drying and cell disruption--recent advances. BIORESOURCE TECHNOLOGY 2015; 184:258-266. [PMID: 25465783 DOI: 10.1016/j.biortech.2014.10.139] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Revised: 10/25/2014] [Accepted: 10/28/2014] [Indexed: 05/14/2023]
Abstract
Production of intracellular metabolites or biofuels from algae involves various processing steps, and extensive work on laboratory- and pilot-scale algae cultivation, harvesting and processing has been reported. As algal drying and cell disruption are integral processes of the unit operations, this review examines recent advances in algal drying and disruption for nutrition or biofuel production. Challenges and prospects of the processing are also outlined. Engineering improvements in addressing the challenges of energy efficiency and cost-effective and rigorous techno-economic analyses for a clearer prospect comparison between different processing methods are highlighted. Holistic life cycle assessments need to be conducted in assessing the energy balance and the potential environmental impacts of algal processing. The review aims to provide useful information for future development of efficient and commercially viable algal food products and biofuels production.
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Affiliation(s)
- Kuan-Yeow Show
- ZheJiang JuNeng Co., Ltd., TongXiang, Zhejiang Province, China
| | - Duu-Jong Lee
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
| | - Joo-Hwa Tay
- Department of Civil Engineering, Schulich School of Engineering, University of Calgary, Canada
| | - Tse-Min Lee
- Institute of Marin Biology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Jo-Shu Chang
- Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan
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113
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Wang HC, Klinthong W, Yang YH, Tan CS. Continuous extraction of lipids from Schizochytrium sp. by CO2-expanded ethanol. BIORESOURCE TECHNOLOGY 2015; 189:162-168. [PMID: 25879184 DOI: 10.1016/j.biortech.2015.04.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 04/01/2015] [Accepted: 04/02/2015] [Indexed: 06/04/2023]
Abstract
CO2-expanded ethanol (CXE) was used to extract DHA-containing lipids from Schizochytrium sp. with a 35.7 wt% lipid content of dry biomass in a continuous mode. The effects of operation variables such as temperature, pressure, ethanol flow rate and CO2 flow rate on extraction performance were investigated. Based on a 2(4)-central composite design and response surface methodology, the optimal operating conditions were determined to be a pressure of 6.9 MPa, a temperature of 313 K, an ethanol flow rate of 1 mL/min and a CO2 flow rate of 6.0 mL/min, providing an extracted lipid yield of 87 wt% over an extraction period of 30 min. Not only the lipid yield obtained using CXE was observed to be significantly greater than those using ethanol and pressurized ethanol as the solvents, but also a lower amount of ethanol and less time were required to achieve the same extraction yield by using CXE.
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Affiliation(s)
- Hsin-Chih Wang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Worasaung Klinthong
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Yi-Hung Yang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Chung-Sung Tan
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC.
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114
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Rakesh S, Dhar DW, Prasanna R, Saxena AK, Saha S, Shukla M, Sharma K. Cell disruption methods for improving lipid extraction efficiency in unicellular microalgae. Eng Life Sci 2015. [DOI: 10.1002/elsc.201400222] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Suchitra Rakesh
- Centre for Conservation and Utilisation of Blue Green AlgaeIndian Agricultural Research Institute (IARI) New Delhi India
| | - Dolly W. Dhar
- Centre for Conservation and Utilisation of Blue Green AlgaeIndian Agricultural Research Institute (IARI) New Delhi India
| | - Radha Prasanna
- Division of MicrobiologyIndian Agricultural Research Institute (IARI) New Delhi India
| | - Anil K. Saxena
- Division of MicrobiologyIndian Agricultural Research Institute (IARI) New Delhi India
| | - Supradip Saha
- Division of Agricultural ChemicalsIndian Agricultural Research Institute (IARI) New Delhi India
| | - Madhulika Shukla
- Centre for Conservation and Utilisation of Blue Green AlgaeIndian Agricultural Research Institute (IARI) New Delhi India
| | - Khushbu Sharma
- Division of Agricultural ChemicalsIndian Agricultural Research Institute (IARI) New Delhi India
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115
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Ranjith Kumar R, Hanumantha Rao P, Arumugam M. Lipid Extraction Methods from Microalgae: A Comprehensive Review. FRONTIERS IN ENERGY RESEARCH 2015; 2. [DOI: 10.3389/fenrg.2014.00061] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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116
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Tang SY, Sivakumar M. Ultrasound as a Green Processing Technology for Pretreatment and Conversion of Biomass into Biofuels. PRODUCTION OF BIOFUELS AND CHEMICALS WITH ULTRASOUND 2015. [DOI: 10.1007/978-94-017-9624-8_7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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117
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Cheung YC, Liu XX, Wang WQ, Wu JY. Ultrasonic disruption of fungal mycelia for efficient recovery of polysaccharide-protein complexes from viscous fermentation broth of a medicinal fungus. ULTRASONICS SONOCHEMISTRY 2015; 22:243-248. [PMID: 24889549 DOI: 10.1016/j.ultsonch.2014.05.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 05/07/2014] [Accepted: 05/08/2014] [Indexed: 06/03/2023]
Abstract
High-intensity ultrasound (US) was applied to facilitate the extraction of intracellular and extracellular polysaccharide-protein complexes (PSPs) from the viscous mycelial fermentation broth of a medicinal fungus Cordyceps sinensis Cs-HK1. The US treatment caused the disruption of fungal mycelia, a dramatic reduction of the apparent broth viscosity, and the release of intracellular products into the liquid medium. The degree of mycelium disruption and the rate of intracellular product release were dependent on US power intensity, treatment period and biomass concentration of broth. The extraction or release kinetics of total water-soluble products and PSPs (yield Y versus time t) under the effect of US was fitted closely to the Elovich model Y=Yo+Y1 lnt and parabolic model Y=Yo+Y1t(½), respectively. Another interesting effect of the US treatment was a notable increase in the antioxidant cytoprotective activity of PSP against H2O2 induced cell death.
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Affiliation(s)
- Yi-Ching Cheung
- Department of Applied Biology and Chemical Technology, State Key Laboratory of Chinese Medicine and Molecular Pharmacology in Shenzhen, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Xing-Xun Liu
- Department of Applied Biology and Chemical Technology, State Key Laboratory of Chinese Medicine and Molecular Pharmacology in Shenzhen, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Wing-Qiang Wang
- Department of Applied Biology and Chemical Technology, State Key Laboratory of Chinese Medicine and Molecular Pharmacology in Shenzhen, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Jian-Yong Wu
- Department of Applied Biology and Chemical Technology, State Key Laboratory of Chinese Medicine and Molecular Pharmacology in Shenzhen, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
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118
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Kar JR, Singhal RS. Investigations on ideal mode of cell disruption in extremely halophilic Actinopolyspora halophila (MTCC 263) for efficient release of glycine betaine and trehalose. ACTA ACUST UNITED AC 2014. [PMID: 28626687 PMCID: PMC5466200 DOI: 10.1016/j.btre.2014.12.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Actinopolyspora halophila produces glycine betaine and trehalose intracellularly in considerable quantities. These biomolecules are commercially important as they have applications in food, pharmaceuticals, and agricultural sector. Development of an efficient cell disruption technique is an important step for the release of these biomolecules. In this study, various cell disruption methods such as chemical, enzymatic, physico-mechanical and physical methods were evaluated. Cell disruption by osmotic shock was found to be the best suited method for A. halophila which also has a potential to be industrially scaled up. Cell bursting pressure that is generated during osmotic shock in A. halophila was computed using Morse equation and was found to be π = 238.37 ± 29.54 atm or 2.35 ± 0.29 kPa. In addition, it was found that osmotic shock followed a first order release rate kinetics in A. halophila. The findings can be used for commercially important biomolecules from other halophilic and/or halotolerant microbes.
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Affiliation(s)
- Jayaranjan R Kar
- Department of Food Engineering and Technology, Institute of Chemical Technology, N.P Marg, Matunga, Mumbai 400019, Maharashtra, India
| | - Rekha S Singhal
- Department of Food Engineering and Technology, Institute of Chemical Technology, N.P Marg, Matunga, Mumbai 400019, Maharashtra, India
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119
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Bzducha-Wróbel A, Błażejak S, Kawarska A, Stasiak-Różańska L, Gientka I, Majewska E. Evaluation of the efficiency of different disruption methods on yeast cell wall preparation for β-glucan isolation. Molecules 2014; 19:20941-61. [PMID: 25517337 PMCID: PMC6271764 DOI: 10.3390/molecules191220941] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 12/01/2014] [Accepted: 12/02/2014] [Indexed: 11/30/2022] Open
Abstract
Selected methods for yeast cell disruption were evaluated to establish their suitability for cell wall preparation in the process of β-glucan isolation. The effect of different disruption methods on contents of total saccharides, β-glucans and proteins in the produced cell walls preparations was analyzed. The degree of cell wall purification from intracellular components was established on the basis of the ratio of solubilised material. The investigated methods included: cell exposure to hot water (autoclaving), thermally-induced autolysis, homogenization in a bead mill, sonication and their combinations. Experimental systems were prepared in water (pH 5.0 and pH 7.0) and Tris-HCl buffer (pH 8.0). The Saccharomyces cerevisiae yeast cell wall preparations with the highest degree of cytosol component release and purification of β-glucans were produced by 30 min of cell homogenization with zirconium-glass beads (0.5 mm in diameter). This was confirmed by the highest ratio of solubilised material (approx. 64%–67%). The thus-produced preparations contained ca. 60% of total saccharides, 13%–14% of β(1,3)/(1,6)-glucans, and approx. 35% of crude proteins. Similar results were obtained after autolysis coupled with bead milling as well as with sonication, but the time required for these processes was more than 24 h. Homogenization in a bead mill could be valuable for general isolation procedures because allows one to eliminate the different autolytic activity of various yeast strains.
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Affiliation(s)
- Anna Bzducha-Wróbel
- Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159c, Warsaw 02-776, Poland.
| | - Stanisław Błażejak
- Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159c, Warsaw 02-776, Poland.
| | - Anna Kawarska
- Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159c, Warsaw 02-776, Poland.
| | - Lidia Stasiak-Różańska
- Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159c, Warsaw 02-776, Poland.
| | - Iwona Gientka
- Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159c, Warsaw 02-776, Poland.
| | - Ewa Majewska
- Department of Chemistry, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159c, Warsaw 02-776, Poland.
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120
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Zhou J, Zhang F, Meng H, Bao G, Zhang Y, Li Y. Development of a silicon carbide disruption method enables efficient extraction of proteins from cyanobacterium Synechocystis sp. PCC 6803. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.09.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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121
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Utilisation of microfluidisation to enhance enzymatic and metabolic potential of lactococcal strains as adjuncts in Gouda type cheese. Int Dairy J 2014. [DOI: 10.1016/j.idairyj.2014.01.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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122
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123
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Rapid detection of neutral lipid in green microalgae by flow cytometry in combination with Nile red staining—an improved technique. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-014-0937-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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124
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Huang Y, Hong A, Zhang D, Li L. Comparison of cell rupturing by ozonation and ultrasonication for algal lipid extraction from Chlorella vulgaris. ENVIRONMENTAL TECHNOLOGY 2014; 35:931-937. [PMID: 24645476 DOI: 10.1080/09593330.2013.856954] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Cell disruption is essential for lipid collection from cultivated microalgae. This study examines the performance of ultrasonication (US), conventional bubbling ozonation (CBO), and pressure-assisted ozonation (PAO) as a cell rupturing technique to obtain algal lipid from a freshwater unicellular microalgae Chlorella vulgaris, which was grown in BG11 medium at a temperature of 25 degrees C and illuminated by artificial lighting with light/dark cycle of 12 h/12 h. Changes in total organic carbon, total nitrogen, total phosphorous, and chlorophyll contents in the algae suspension after ozonation and US treatments were measured to evaluate the effectiveness of cell rupture by these techniques. Lipid yields of 21 and 27 g/100 g biomass were obtained using US and PAO, respectively. Lipid yields of about 5 g/100 g biomass were obtained using CBO. In all rupturing treatments, C16 and C18 compounds were found to be predominant accounting for 90% of the fatty acids. Using US for rupturing, fatty acids of C 16:0, C18:1, and C18:2 were predominant, accounting for 76 +/- 4.2% of all the fatty acids. Using CBO and PAO involving ozone, fatty acids of C16:0 and C18:0 were predominant, accounting for 63-94% of the products. The results suggest that saturated fatty acid methyl ester (FAME) products are predominant with oxidative ozonation rupturing while unsaturated FAME products of lower-melting points predominant with physical ultrasonic rupturing means. PAO was an effective cell rupture method for biodiesel production with high lipid yield and more saturated hydrocarbon products.
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125
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Wang M, Yuan W, Jiang X, Jing Y, Wang Z. Disruption of microalgal cells using high-frequency focused ultrasound. BIORESOURCE TECHNOLOGY 2014; 153:315-321. [PMID: 24374364 DOI: 10.1016/j.biortech.2013.11.054] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 11/14/2013] [Accepted: 11/20/2013] [Indexed: 06/03/2023]
Abstract
The objective of this study was to evaluate the effectiveness of high-frequency focused ultrasound (HFFU) in microalgal cell disruption. Two microalgal species including Scenedesmus dimorphus and Nannochloropsis oculata were treated by a 3.2-MHz, 40-W focused ultrasound and a 100-W, low-frequency (20kHz) non-focused ultrasound (LFNFU). The results demonstrated that HFFU was effective in the disruption of microalgal cells, indicated by significantly increased lipid fluorescence density, the decrease of cell sizes, and the increase of chlorophyll a fluorescence density after treatments. Compared with LFNFU, HFFU treatment was more energy efficient. The combination of high and low frequency treatments was found to be even more effective than single frequency treatment at the same processing time, indicating that frequency played a critical role in cell disruption. In both HFFU and LFNFU treatments, the effectiveness of cell disruption was found to be dependent on the cell treated.
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Affiliation(s)
- Meng Wang
- Department of Biological and Agricultural Engineering, North Carolina State University, Raleigh, NC 27695, United States
| | - Wenqiao Yuan
- Department of Biological and Agricultural Engineering, North Carolina State University, Raleigh, NC 27695, United States.
| | - Xiaoning Jiang
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, United States
| | - Yun Jing
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, United States
| | - Zhuochen Wang
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, United States
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126
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Ciudad G, Rubilar O, Azócar L, Toro C, Cea M, Torres Á, Ribera A, Navia R. Performance of an enzymatic extract in Botrycoccus braunii cell wall disruption. J Biosci Bioeng 2014; 117:75-80. [DOI: 10.1016/j.jbiosc.2013.06.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 05/16/2013] [Accepted: 06/11/2013] [Indexed: 11/26/2022]
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127
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Ekpeni LE, Nkem-Ekpeni FF, Benyounis KY, Aboderheeba AK, Stokes J, Olabi A. Yeast: A Potential Biomass Substrate for the Production of Cleaner Energy (Biogas). ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.egypro.2014.12.199] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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128
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Silva C, Soliman E, Cameron G, Fabiano LA, Seider WD, Dunlop EH, Coaldrake AK. Commercial-Scale Biodiesel Production from Algae. Ind Eng Chem Res 2013. [DOI: 10.1021/ie403273b] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cory Silva
- Department
of Chemical and
Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6393, United States
| | - Eiman Soliman
- Department
of Chemical and
Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6393, United States
| | - Greg Cameron
- Department
of Chemical and
Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6393, United States
| | - Leonard A. Fabiano
- Department
of Chemical and
Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6393, United States
| | - Warren D. Seider
- Department
of Chemical and
Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6393, United States
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129
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Kim J, Yoo G, Lee H, Lim J, Kim K, Kim CW, Park MS, Yang JW. Methods of downstream processing for the production of biodiesel from microalgae. Biotechnol Adv 2013; 31:862-76. [DOI: 10.1016/j.biotechadv.2013.04.006] [Citation(s) in RCA: 378] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 04/13/2013] [Accepted: 04/18/2013] [Indexed: 11/26/2022]
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130
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131
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Determination of carbohydrates present in Saccharomyces cerevisiae using mid-infrared spectroscopy and partial least squares regression. Anal Bioanal Chem 2013; 405:8241-50. [PMID: 23963571 PMCID: PMC3777185 DOI: 10.1007/s00216-013-7239-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2013] [Revised: 06/24/2013] [Accepted: 07/09/2013] [Indexed: 11/04/2022]
Abstract
A fast and simple method to control variations in carbohydrate composition of Saccharomyces cerevisiae, baker's yeast, during fermentation was developed using mid-infrared (mid-IR) spectroscopy. The method allows for precise and accurate determinations with minimal or no sample preparation and reagent consumption based on mid-IR spectra and partial least squares (PLS) regression. The PLS models were developed employing the results from reference analysis of the yeast cells. The reference analyses quantify the amount of trehalose, glucose, glycogen, and mannan in S. cerevisiae. The selection and optimization of pretreatment steps of samples such as the disruption of the yeast cells and the hydrolysis of mannan and glycogen to obtain monosaccharides were carried out. Trehalose, glucose, and mannose were determined using high-performance liquid chromatography coupled with a refractive index detector and total carbohydrates were measured using the phenol–sulfuric method. Linear concentration range, accuracy, precision, LOD and LOQ were examined to check the reliability of the chromatographic method for each analyte. Comparison of workflows for carbohydrate determination in S.cerevisiae by FT-IR spectroscopy and HPLC-RI ![]()
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132
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Enhancement of metal ion adsorption capacity of Saccharomyces cerevisiae's cells by using disruption method. J Taiwan Inst Chem Eng 2013. [DOI: 10.1016/j.jtice.2013.01.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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133
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Lee CG, Kang DH, Lee DB, Lee HY. Pretreatment for simultaneous production of total lipids and fermentable sugars from marine alga, Chlorella sp. Appl Biochem Biotechnol 2013; 171:1143-58. [PMID: 23793826 DOI: 10.1007/s12010-013-0295-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Accepted: 05/08/2013] [Indexed: 11/28/2022]
Abstract
The goal of this study was to determine the optimal pretreatment process for the extraction of lipids and reducing sugars to facilitate the simultaneous production of biodiesel and bioethanol from the marine microalga Chorella sp. With a single pretreatment process, the optimal ultrasonication pretreatment process was 10 min at 47 KHz, and extraction yields of 6.5 and 7.1 (percentage, w/w) of the lipids and reducing sugars, respectively, were obtained. The optimal microwave pretreatment process was 10 min at 2,450 MHz, and extraction yields of 6.6 and 7.0 (percentage, w/w) of the lipids and reducing sugars, respectively, were obtained. Lastly, the optimal high-pressure homogenization pretreatment process was two cycles at a pressure of 20,000 psi, and extraction yields of 12.5 and 12.8 (percentage, w/w) of the lipids and reducing sugars, respectively, were obtained. However, because the single pretreatment processes did not markedly improve the extraction yields compared to the results of previous studies, a combination of two pretreatment processes was applied. The yields of lipids and reducing sugars from the combined application of the high-pressure homogenization process and the microwave process were 24.4 and 24.9 % (w/w), respectively, which was up to three times greater than the yields obtained using the single pretreatment processes. Furthermore, the oleic acid content, which is a fatty acid suitable for biodiesel production, was 23.39 % of the fatty acids (w/w). The contents of glucose and xylose, which are among the fermentable sugars useful for bioethanol production, were 77.5 and 13.3 % (w/w) of the fermentable sugars, respectively, suggesting the possibility of simultaneously producing biodiesel and bioethanol. Based on the results of this study, the combined application of the high-pressure homogenization and microwave pretreatment processes is the optimal method to increase the extraction yields of lipids and reducing sugars that are essential for the simultaneous production of biodiesel and bioethanol.
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Affiliation(s)
- Choon-Geun Lee
- Department of Medical Biomaterials Engineering, Kangwon National University, Chuncheon, 200-701, Korea
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134
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Liu D, Zeng XA, Sun DW, Han Z. Disruption and protein release by ultrasonication of yeast cells. INNOV FOOD SCI EMERG 2013. [DOI: 10.1016/j.ifset.2013.02.006] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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135
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Zbinden MDA, Sturm BS, Nord RD, Carey WJ, Moore D, Shinogle H, Stagg-Williams SM. Pulsed electric field (PEF) as an intensification pretreatment for greener solvent lipid extraction from microalgae. Biotechnol Bioeng 2013; 110:1605-15. [DOI: 10.1002/bit.24829] [Citation(s) in RCA: 154] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 12/10/2012] [Accepted: 12/20/2012] [Indexed: 11/09/2022]
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136
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Improved cell disruption of Pichia pastoris utilizing aminopropyl magnesium phyllosilicate (AMP) clay. World J Microbiol Biotechnol 2013; 29:1129-32. [PMID: 23361969 PMCID: PMC3655210 DOI: 10.1007/s11274-013-1262-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Accepted: 01/14/2013] [Indexed: 11/18/2022]
Abstract
An efficient method for Pichia cell disruption that employs an aminopropyl magnesium phyllosilicate (AMP) clay-assisted glass beads mill is presented. AMP clay is functionalized nanocomposite resembling the talc parent structure Si8Mg6O20(OH)4 that has been proven to permeate the bacterial membrane and cause cell lysis. The recombinant capsid protein of cowpea chlorotic mottle virus (CCMV) expressed in Pichia pastoris GS115 was used as demonstration system for their ability of self-assembly into icosahedral virus-like particles (VLPs). The total protein concentration reached 4.24 mg/ml after 4 min treatment by glass beads mill combined with 0.2 % AMP clay, which was 11.2 % higher compared to glass beads mill only and the time was half shortened. The stability of purified CCMV VLPs illustrated AMP clay had no influence on virus assembly process. Considering the tiny amount added and simple approach of AMP clay, it could be a reliable method for yeast cell disruption.
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137
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Effect of Different Variables on the Efficiency of the Baker's Yeast Cell Disruption Process to Obtain Alcohol Dehydrogenase Activity. Appl Biochem Biotechnol 2013; 169:1039-55. [DOI: 10.1007/s12010-012-0056-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Accepted: 12/26/2012] [Indexed: 11/26/2022]
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138
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Yoo G, Park WK, Kim CW, Choi YE, Yang JW. Direct lipid extraction from wet Chlamydomonas reinhardtii biomass using osmotic shock. BIORESOURCE TECHNOLOGY 2012; 123:717-22. [PMID: 22939599 DOI: 10.1016/j.biortech.2012.07.102] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 07/25/2012] [Accepted: 07/26/2012] [Indexed: 05/21/2023]
Abstract
High-cost downstream process is a major bottleneck for producing microalgal biodiesel at reasonable price. Conventional lipid extraction process necessitates biomass drying process, which requires substantial amount of energy. In this regard, lipid extraction from wet biomass must be an attractive solution. However, it is almost impossible to recover lipid directly from wet microalgae with current technology. In this study, we conceived osmotic shock treatment as a novel method to extract lipid efficiently. Osmotic shock treatment was applied directly to wet Chlamydomonas reinhardtii biomass with water content >99%, along with both polar and non-polar organic solvents. Our results demonstrated that osmotic shock could increase lipid recovery approximately 2 times. We also investigated whether the presence of cell wall or different cell stages could have any impact on lipid recovery. Cell wall-less mutant stains and senescent cell phase could display significantly increased lipid recovery. Taken together, our results suggested that osmotic shock is a promising technique for wet lipid extraction from microalgal biomass and successfully determined that specific manipulation of biomass in certain cell phase could enhance lipid recovery further.
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Affiliation(s)
- Gursong Yoo
- Department of Chemical & Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
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139
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Čolnik M, Primožič M, Knez Ž, Habulin M. Use of supercritical carbon dioxide for proteins and alcohol dehydrogenase release from yeast Saccharomyces cerevisiae. J Supercrit Fluids 2012. [DOI: 10.1016/j.supflu.2012.02.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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140
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Puttige K, Nooralabettu KP. Effect of homogenization speed and time on the recovery of alkaline phosphatase from the hepatopancreatic tissues of shrimps. Food Sci Biotechnol 2012. [DOI: 10.1007/s10068-012-0058-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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141
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Fluorescence imaging and targeted distribution of bacterial magnetic particles in nude mice. Appl Microbiol Biotechnol 2012; 94:495-503. [DOI: 10.1007/s00253-012-3981-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2011] [Revised: 02/14/2012] [Accepted: 02/16/2012] [Indexed: 01/15/2023]
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142
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Extraction of carotenoids from Phaffia rhodozyma: A comparison between different techniques of cell disruption. Food Sci Biotechnol 2012. [DOI: 10.1007/s10068-012-0001-9] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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143
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Miranda JR, Passarinho PC, Gouveia L. Pre-treatment optimization of Scenedesmus obliquus microalga for bioethanol production. BIORESOURCE TECHNOLOGY 2012; 104:342-8. [PMID: 22093974 DOI: 10.1016/j.biortech.2011.10.059] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Revised: 10/17/2011] [Accepted: 10/18/2011] [Indexed: 05/03/2023]
Abstract
The present work deals with the optimization of cellular disruption and sugar extraction from the microalgae Scenedesmus obliquus (Sc) for bioethanol production. Among the physical and physicochemical methods tested, the best results were obtained with acid hydrolysis by H(2)SO(4) (2N), at 120 °C for 30 min and using dried biomass. The sugar extraction efficiency level reached was 95.6% when compared to the harsh quantitative acid hydrolysis. The influence of other parameters such as biomass loading and number of extraction cycles were also evaluated. The results obtained in the latter case showed that a unique hydrolysis step is sufficient.
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Affiliation(s)
- J R Miranda
- Laboratório Nacional de Energia e Geologia (LNEG), Unidade de Bioenergia, Estrada do Paço do Lumiar 1649-038 Lisboa, Portugal
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144
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In vitro antimicrobial effects and mechanism of action of selected plant essential oil combinations against four food-related microorganisms. Food Res Int 2011. [DOI: 10.1016/j.foodres.2011.07.030] [Citation(s) in RCA: 380] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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145
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Liu D, Lebovka NI, Vorobiev E. Impact of Electric Pulse Treatment on Selective Extraction of Intracellular Compounds from Saccharomyces cerevisiae Yeasts. FOOD BIOPROCESS TECH 2011. [DOI: 10.1007/s11947-011-0703-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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146
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Comparative study of fungal cell disruption--scope and limitations of the methods. Folia Microbiol (Praha) 2011; 56:469-75. [PMID: 21901292 PMCID: PMC3189342 DOI: 10.1007/s12223-011-0069-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Accepted: 08/29/2011] [Indexed: 11/01/2022]
Abstract
Simple and effective protocols of cell wall disruption were elaborated for tested fungal strains: Penicillium citrinum, Aspergillus fumigatus, Rhodotorula gracilis. Several techniques of cell wall disintegration were studied, including ultrasound disintegration, homogenization in bead mill, application of chemicals of various types, and osmotic shock. The release of proteins from fungal cells and the activity of a cytosolic enzyme, glucose-6-phosphate dehydrogenase, in the crude extracts were assayed to determine and compare the efficacy of each method. The presented studies allowed adjusting the particular method to a particular strain. The mechanical methods of disintegration appeared to be the most effective for the disintegration of yeast, R. gracilis, and filamentous fungi, A. fumigatus and P. citrinum. Ultrasonication and bead milling led to obtaining fungal cell-free extracts containing high concentrations of soluble proteins and active glucose-6-phosphate dehydrogenase systems.
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147
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Prabakaran P, Ravindran AD. A comparative study on effective cell disruption methods for lipid extraction from microalgae. Lett Appl Microbiol 2011; 53:150-4. [PMID: 21575021 DOI: 10.1111/j.1472-765x.2011.03082.x] [Citation(s) in RCA: 205] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIMS To compare effective cell disruption methods for lipid extraction from fresh water microalgae. METHODS AND RESULTS Chlorella sp., Nostoc sp. and Tolypothrix sp. were isolated from fresh water ponds in and around Gandhigram, Dindigul District, Tamilnadu, India, and used for lipid extraction. Different methods, including autoclaving, bead beating, microwave, sonication and a 10% NaCl solution treatments, were tested to identify the most effective cell disruption method. The total lipids from three microalgal species were extracted using a mixture of chloroform and methanol. Fatty acid composition was detected by gas chromatography (GC). Nostoc sp. and Tolypothrix sp. showed higher oleic acid content of 13.27 mg g(-1) dw and 17.75 mg g(-1) dw, respectively, whereas Chlorella sp. had high linoleic acid content of 17.61 mg g(-1) dw when the cells were disrupted using the sonication method. CONCLUSIONS Finally, the sonication method was found to be the most applicable and efficient method of lipid extraction from microalgae. The highest lipid content was extracted from Chlorella sp. SIGNIFICANCE AND IMPACT OF THE STUDY In biodiesel production from microalgae, lipid extraction is a crucial step and important as cell disruption comes in this step. Therefore, the appropriate cell disruption method and device is a key to increase the lipid extraction efficiency.
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Affiliation(s)
- P Prabakaran
- Department of Biology, Gandhigram Rural Institute-Deemed University, Gandhigram, Tamilnadu, India
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148
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Poyatos JM, Almecija MC, García-Mesa JJ, Muñio MM, Hontoria E, Torres JC, Osorio F. Advanced methods for the elimination of microorganisms in industrial treatments: potential applicability to wastewater reuse. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2011; 83:233-246. [PMID: 21466071 DOI: 10.2175/106143010x12780288628570] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Because of the growing need to eliminate undesirable microorganisms in different industrial treatments, mainly in the food and agricultural sector and the pharmaceutical industry, a number of increasingly effective systems for disinfection to eliminate microorganisms have been devised. This article analyzes different methods to eliminate and/or significantly reduce the number of microorganisms in industrial contexts and in environmental engineering. Although, in the past, thermal treatments had been used most frequently for microbial elimination, the method is costly and has the disadvantage of modifying the organoleptic and/or physicochemical properties of the food products. For this reason, new technologies rapidly are being developed, such as high-intensity pulsed electric fields, high-pressure systems, ultrasounds, and irradiation, which effectively eliminate microorganisms without deteriorating the properties of the product. These emerging technologies are potentially applicable in the field of environmental engineering.
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Affiliation(s)
- J M Poyatos
- Department of Civil Engineering, University of Granada, Spain
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149
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Zheng H, Yin J, Gao Z, Huang H, Ji X, Dou C. Disruption of Chlorella vulgaris cells for the release of biodiesel-producing lipids: a comparison of grinding, ultrasonication, bead milling, enzymatic lysis, and microwaves. Appl Biochem Biotechnol 2011; 164:1215-24. [PMID: 21347653 DOI: 10.1007/s12010-011-9207-1] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Accepted: 02/15/2011] [Indexed: 10/18/2022]
Abstract
A comparative evaluation of different cell disruption methods for the release of lipids from marine Chlorella vulgaris cells was investigated. The cell growth of C. vulgaris was observed. Lipid concentrations from different disruption methods were determined, and the fatty acid composition of the extracted lipids was analyzed. The results showed that average productivity of C. vulgaris biomass was 208 mg L⁻¹ day⁻¹. The lipid concentrations of C. vulgaris were 5%, 6%, 29%, 15%, 10%, 7%, 22%, 24%, and 18% when using grinding with quartz sand under wet condition, grinding with quartz sand under dehydrated condition, grinding in liquid nitrogen, ultrasonication, bead milling, enzymatic lysis by snailase, enzymatic lysis by lysozyme, enzymatic lysis by cellulose, and microwaves, respectively. The shortest disruption time was 2 min by grinding in liquid nitrogen. The unsaturated and saturated fatty acid contents of C. vulgaris were 71.76% and 28.24%, respectively. The extracted lipids displayed a suitable fatty acid profile for biodiesel [C16:0 (~23%), C16:1 (~23%), and C18:1 (~45%)]. Overall, grinding in liquid nitrogen was identified as the most effective method in terms of disruption efficiency and time.
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Affiliation(s)
- Hongli Zheng
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, No. 5 Xinmofan Road, Nanjing, 210009, People's Republic of China
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150
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Application of Hydrodynamic Cavitation for Food and Bioprocessing. FOOD ENGINEERING SERIES 2011. [DOI: 10.1007/978-1-4419-7472-3_6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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