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Dissertations / Theses on the topic 'Algal lipids'

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Published: 14 March 2023

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1

Teece, Mark A. "Biodegradation of algal lipids and significance for sediment studies." Thesis, University of Bristol, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239071.

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2

Chiodza, Kudzai Godknows. "Desulphurisation of fine coal waste tailings using algal lipids." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29892.

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The South African economy is an energy-driven economy which relies on coal to meet most of its energy demands. Coal mining has resulted in the generation of coal waste over 60 million tonnes, annually. Apart from the huge footprint of this waste, the sulphide minerals contained in the waste have resulted in the generation of acid rock drainage (ARD). A lot of techniques have been developed to prevent and mitigate ARD, however most of these techniques have fallen short in terms of meeting their desired objectives due to the long-term nature of ARD generation which can persist for hundreds of ye

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3

King, P. M. "The use of ultrasound on the extraction of microalgal lipids." Thesis, Coventry University, 2014. http://curve.coventry.ac.uk/open/items/4aabbd22-686a-4284-a18d-23de6bcff203/1.

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Microalgae synthesize and store large volumes of lipids (potentially over 25% of dry weight) which could provide a renewable source of biodiesel. Traditional extraction techniques often produce poor lipid yields particularly from microalgae with robust cell walls. This project investigated the role of power ultrasound as a cell disruption step in lipid extraction from four microalgal species. Nile Red staining was used to assess the time when ultrasound induced increased membrane permeability in each species and lipids were extracted using an ultrasound assisted Bligh and Dyer extraction metho

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4

Olsen, Rebecca Lynn. "Modification of plant and yeast lipids by heterologous expression of protist, algal, and animal desaturases." Online access for everyone, 2006. http://www.dissertations.wsu.edu/Dissertations/Fall2006/r_olsen_011907.pdf.

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5

Johnson, Michael Ben. "Microalgal Biodiesel Production through a Novel Attached Culture System and Conversion Parameters." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/32034.

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Due to a number of factors, the biodiesel industry in the United States is surging in growth. Traditionally, oil seed crops such as soybean are used as the feedstock to create biodiesel. However, the crop production can no longer safely keep up with the demand for the growing biodiesel industry. Using algae as a feedstock has been considered for a number of years, but it has always had limitations. These limitations were mainly due to the production methods used to grow and harvest the algae, rather than the reaction methods of creating the biodiesel, which are the same as when using tradi

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6

Clemente, Ilaria. "Compartmentalized algal-based nanocarriers as vectors for antioxidants: structural and functional characterization." Doctoral thesis, Università di Siena, 2022. http://hdl.handle.net/11365/1193669.

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The delivery of poorly water-soluble natural drugs is a longtime challenge that has led to the development of several solubilizing and encapsulating carrier systems, to administrate hydrophobic molecules for biomedical, pharmaceutical, food and cosmetics applications. Among the most popular soft matter nanocarriers, lipid-based vectors are particularly favored thanks to the advantageous properties of lipids used as versatile and biocompatible building blocks. Indeed, lipids are the class of bio-macromolecules with the richest polymorphism and spontaneous self-assembly character, that result i

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7

Hamam, Fayez. "Lipase-catalyzed acidolysis of algal oils with a medium-chain fatty acid, capric acid /." Internet access available to MUN users only, 2003. http://collections.mun.ca/u?/theses,156236.

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8

Neto, Riamburgo Gomes de Carvalho. "Estudo dos mecanismos envolvidos na separaÃÃo e ruptura simultÃneas de biomassa algal pelo uso da tecnologia de eletroflotaÃÃo por corrente alternada." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=10985.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>Dentre as diversas etapas para a transformaÃÃo de microalgas em biodiesel, os processos de separaÃÃo e a ruptura celular dessa biomassa sÃo particularmente importantes, uma vez que as tecnologias disponÃveis para este fim apresentam elevados custos, comprometendo a viabilidade do aproveitamento energÃtico. Este trabalho teve como objetivo geral estudar os mecanismos envolvidos na separaÃÃo e ruptura simultÃneas de biomassa algal pelo uso da tecnologia de eletroflotaÃÃo por corrente alternada (EFCA), com objetivo principal de extr

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9

Wong, Yee Keung. "Feasibility of using Chlorella vulgaris for the production of algal lipids, for advancement towards a potential application in the manufacture of commodity chemicals and the treatment of wastewater." HKBU Institutional Repository, 2016. https://repository.hkbu.edu.hk/etd_oa/254.

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Driven by the increase in industrialization and population, the global demand of energy and material products is steadily growing. Microalgae have come into prominence in the past several decades due to their ability to utilize solar energy to fix atmospheric carbon dioxide, and produce biomass and lipids at productivities much higher than those possible with terrestrial biomass. The main objective of this research is to maximize the biomass and lipid production of Chlorella vulgaris by varying different external conditions so as to achieve the ideal feedstock for the production of commodity c

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10

Woolsey, Paul A. "Rotating Algal Biofilm Reactors: Mathematical Modeling and Lipid Production." DigitalCommons@USU, 2011. https://digitalcommons.usu.edu/etd/1107.

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Harvesting of algal biomass presents a large barrier to the success of biofuels made from algae feedstock. Small cell sizes coupled with dilute concentrations of biomass in lagoon systems make separation an expensive and energy intense-process. The rotating algal biofilm reactor (RABR) has been developed at USU to provide a sustainable technology solution to this issue. Algae cells grown as a biofilm are concentrated in one location for ease of harvesting of high density biomass. A mathematical model of this biofilm system was developed based on data generated from three pilot scale reactors a

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11

Woertz, Ian C. "Lipid Productivity of Algae Grown on Dairy Wastewater as a Possible Feedstock for Biodiesel." DigitalCommons@CalPoly, 2008. https://digitalcommons.calpoly.edu/theses/183.

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The objective of this thesis is to develop a biological wastewater treatment system that utilizes algal growth to simultaneously create renewable energy in the form of biodiesel and digester biogas, remove polluting nutrients, and abate greenhouse gases. Research under the Department of Energy Aquatic Species Program during 1978-1996 concluded that cultivating algae for biofuels was cost prohibitive at that time and that an integrated approach should be studied that combined wastewater treatment with algal biofuel production. Nutrient removal, in particular nitrogen and phosphorus, from wast

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12

Jones, Lisa A. "Bioadsorption of Copper (II) By Chlorella Sp. Biomass: Continuous Process with Cost Analysis and Comsol Model Simulations." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/307004.

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With the continuous improvement in knowledge and health risks associated with heavy metal expulsion, government environmental agencies are continuously reducing the legal disposal limits. However, the demand for items like IPods or energy-efficient appliances containing heavy metal like copper is on the rise. Whether from commercial or residential areas, heavy metals are known to have toxic effects on humans, animals, and/or ecosystems; hence, their removal is necessary part of preserving our environment. With the rising cost of natural resources, biological species have proven to be viable al

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13

Vít, Radek. "Analýza glukanů v rostlinných a mikrobiálních vzorcích." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-414130.

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The aim of the diploma thesis is study of glucans production in selected species of yeasts, algae and plants. Cultivation conditions for yeast strains were performed to gain increased production of glucans under different temperature conditions and in media of different composition. Into the set of tested yeasts species strains Saccharomyces cerevisiae (CCY 6646), Sporidiobolus pararoseus (CCY 19-9-6), Phaffia rhodozyma (CCY 77-1), Rhodotorula glutinis (CCY 20-78-26) and Cystofilobasidium infirmominiatum (CCY 17-18-4) were enrolled. Saccharomyces cerevisiae was cultivated as a control strain b

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14

Berthold, Erwin David. "Enhancing Algal Biomass and Lipid Production through Bacterial and Fungal Co-Culture." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2563.

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This thesis investigates the effects of co-culturing microorganisms including 37 yeast, 38 bacteria, nine diazotrophic cyanobacteria, and three fungi on biomass and lipid production in fresh- and saltwater algae. Algal lipid content was measured using Nile Red method and gravimetric techniques. Among the algal strains tested, freshwater Coelastrum sp. 46-4, and saltwater Cricosphaera sp. 146-2-9, showed enhanced biomass yield and lipid content in response to co-culture with bacteria, cyanobacteria, and fungi. While co-culture with yeast caused inhibition of algal productivity, no difference in

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15

Tillett, David McIlvain. "Lipid productivity and species competition in laboratory models of algal mass cultures." Diss., Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/10274.

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16

Pettitt, T. R. "Lipid metabolism and membrane function in two species of marine red algae." Thesis, Bucks New University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382614.

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17

Kanemoto, Fernando Takashi. "Otimização de sistema de cultivo de baixo custo de Nannochloropsis gaditana Lubián 1982 para produção de biodiesel." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/21/21134/tde-26092013-193937/.

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O desenvolvimento de fontes de energia renováveis tem se tornado cada vez mais necessário e, nesse contexto, os biocombustíveis têm um importante papel. Este trabalho teve como objetivo otimizar a produtividade de biomassa e de lipídios da microalga Nannochloropsis gaditana, em cultivos de baixo-custo visando à produção de biodiesel. Um sistema de cultivo foi concebido com materiais acessíveis e os experimentos testaram o efeito de diferentes exposições das células ao claro-escuro, sob irradiância de 800?E m-2 s-1. Foram testadas três profundidades de cultivo (2, 4 e 8 cm) e duas taxas de aera

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18

Segali, Alexandra Maria Donadon Lusser [UNESP]. "Desempenho de Ankistrodesmus gracilis (Reischi) Korsikov (Chlorophyta) cultivada em três meios de cultura em laboratório." Universidade Estadual Paulista (UNESP), 2014. http://hdl.handle.net/11449/116024.

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Made available in DSpace on 2015-03-03T11:52:53Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-06-06Bitstream added on 2015-03-03T12:06:55Z : No. of bitstreams: 1 000804740.pdf: 427264 bytes, checksum: a59271f661e7ce490375621680ab8a3e (MD5)<br>A microalga A. gracilis é conhecida pela sua capacidade de ser usada em nutrição de organismos aquáticos. Alguns estudos relatam que a adição de vitamina junto ao meio de cultura promove uma melhora nas condições do cultivo. O objetivo deste estudo foi avaliar o desempenho da microalga Chlorophyceae, Ankistrodesmus gracilis, em condições contro

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19

Bosley, Amber L. "Algae Characterization and Processing Techniques." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1321538296.

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20

Szotkowski, Martin. "Srovnání metabolické aktivity a potenciálního využití mikrořas a pigmentotvorných kvasinek." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2016. http://www.nusl.cz/ntk/nusl-240805.

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Carotenoids are natural pigments occurring in plants and many microorganisms, such as algae, yeast and bacteria. They represent the most common group of antioxidants with significant biological effect. Lipids are an essential component of all living organisms. They are the source and the reservoir of energy for organisms, which can also be used in the petrochemical industry for the production of biofuels. This thesis deals with the production properties of carotenoids and lipids by selected strains of yeasts, algae, and canobacteria, in order to apply the acquired knowledge and find cheap suit

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21

Wang, Bei. "Microalgal Lipids Production and NitrogenPhosphorus Removal Using the Green Alga Neochloris oleoabundans." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28571.

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A Neochloris oleoabundans strain screened in our lab was demonstrated to have the ability to accumulate large quantities of triglycerides, the feedstock of biodiesel production, and to remove nitrogen and phosphorus from wastewater efficiently. Box-Behnken experimental design (BBD) and response surface method (RSM) were used to study the effects of a large number of nutrients on cell growth and lipid accumulation. The optimized medium supported a lipid concentration of 641.4 mg/l and a cell density of 2.54 g/l, which were 4.5-fold and 2.2-fold of that obtained with the basic medium, modified B

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22

Anthony, Renil J. "Solvent Extraction of Lipids from Microalgae." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1280854965.

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23

Chen, Guanqun. "Lipid and fatty acid composition and their biosyntheses in relation to carotenoid accumulation in the microalgae nitzschia laevis (Bacillariophyceae) and haematococcus pluvialis (chlorophyceae)." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/HKUTO/record/B39557364.

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24

Chen, Guanqun, and 陳冠群. "Lipid and fatty acid composition and their biosyntheses in relation tocarotenoid accumulation in the microalgae nitzschia laevis(Bacillariophyceae) and haematococcus pluvialis (chlorophyceae)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B39557364.

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25

Nicolai, Eric Alexander. "Growth Media and Lipid Determination Comparison of High Rate Algae Ponds." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1351.

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Growth Media and Lipid Determination Comparison of High Rate Algae Ponds Eric Alexander Nicolai The feasibility of algal biofuel production relies on the use of a non-potable water source. Municipal wastewater is nutrient-rich and a cost effective option as a growth media in algae ponds. However, this resource may be too valuable for algal biomass production, as reclaimed wastewater is needed for surface irrigation and groundwater recharge. This thesis compares the performance of 4.2 m2 high rate algal raceway ponds (HRAPs) to 33 m2 HRAPs grown on primary settled wastewater during a media recy

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26

Gottumukala, Vasudev. "Evaluation of Lake Erie Algae as Bio-fuel Feedstock." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1271194064.

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27

Hutton, Matthew W. "EXTRACTION AND CHARACTERIZATION OF LIPIDS FROM MICROALGAE GROWN ON MUNICIPAL WASTEWATER." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/214.

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Based on results of its Aquatic Species Program (1978-1996), which sought to develop algae-to-liquid fuel technology, the U.S. Department of Energy has suggested that algal wastewater treatment may be incorporated into biodiesel production schemes to reduce the operating costs of both processes. the purpose of the current research was to evaluate the triglycerides produced by wastewater-grown algae for their suitability as a fuel feedstock and to investigate the effectiveness of several solvent mixtures and extraction procedures at recovering lipids from fresh algae. The research involved tw

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28

Ahmad, Kamaroddin Mohd Farizal. "In-situ disinfection and algal lipid extraction using ozonation in novel microbubble bioreactor for biofuel production." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/17194/.

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The scaling up and downstream processing costs of biodiesel from microalgae are major concerns. This study focuses on developing a new method by integrating ozone-rich microbubbles in both the production of microalgae and in downstream processes such as biomass harvesting and lipid extraction. A bacterial contaminant of a green algal (Dunaliella salina) culture was successfully screened, isolated and identified using 16S rRNA gene sequencing as a member of the Halomonas genus (gram-negative). Ozonation of mixed cultures of D. salina and Halomonas for 10 minutes at 8 mg/L reduced the bacterial

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29

Csavina, Janae L. "The Optimization of Growth Rate and Lipid Content from Select Algae Strains." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1215529734.

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30

Sathish, Ashik. "Biodiesel Production from Mixed Culture Algae Via a Wet Lipid Extraction Procedure." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1372.

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With world crude oil reserves decreasing and energy prices continually increasing, interest in developing renewable alternatives to petroleum-based liquid fuels has increased. An alternative that has received consideration is the growth and harvest of microalgae for the production of biodiesel via extraction of the microalgal oil or lipids. However, costs related to the growth, harvesting and dewatering, and processing of algal biomass have limited commercial scale production of algal biodiesel. Coupling wastewater remediation to microalgal growth can lower costs associated with large scale gr

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31

Moraes, Gisely Souza Campos. "Produção de biomassa algal e extração de óleo a partir da microalga Chlorella Vulgaris /." Guaratinguetá, 2018. http://hdl.handle.net/11449/180247.

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Orientador: Marcela Aparecida Guerreiro Machado<br>Resumo: A microalga Chlorella possui ácidos graxos poli-insaturados, vitaminas e alto conteúdo proteico. Desse modo, estudos recentes têm explorado o uso de microalgas para obtenção de lipídios, principalmente os de maior valor comercial como o ácido ɣ-linolênico. Estre trabalho objetivou propor um método de cultivo para a microalga Chlorella vulgaris e extração do óleo. Os experimentos foram realizados em duplicata de acordo com o arranjo ortogonal de Taguchi, a partir da qual foram organizadas duas etapas: na primeira foram viabilizados cult

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32

Liu, Zhouyang. "Nitrogen Removal and Lipid Production from Secondary Wastewater Using Green Alga Chlorella vulgaris." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1329935203.

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33

Gigante, Bethany Marie. "SALINE ADAPTATION OF THE MICROALGA Scenedesmus dimorphus FROM FRESH WATER TO BRACKISH WATER." Cleveland State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=csu1382355969.

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34

Goold, Hugh. "Décrypter le métabolisme des lipides dans les microalgues en utilisant des approches de génétique moléculaire." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4047.

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Dans notre contexte moderne, les besoins en carburant demandent une innovation constante en terme de sources d'énergie. La dominance actuelle des carburants d'origine fossile dans les modes de transport personnels tels que l'aviation peut être renversée à condition de disposer de carburants efficaces riches en molécules énergétiques comme les hydrocarbures long. Dans le cas où les marchés économiques augmentent le prix des énergies fossiles, une source d'énergie renouvellable seront les plantes. Les plantes qui semblent les plus prometteuses sont les algues. En effet, ces cellules vertes produ

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35

COSTELLI, CRISTINA. "Genetic and phylogenetic characterization of microalgae strains in view of their exploitation for CO2 capture and biofuel production." Doctoral thesis, Università degli Studi di Cagliari, 2015. http://hdl.handle.net/11584/266805.

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In the light of for sustainable development, microalgal biodiesel, as a renewable and sustainable energy type, has enjoyed a surge in popularity. In fact, differently from the first generation biofuels, the use of microalgae to produce bioenergy does not involve the triggering of "food for fuel" competitivity and thus represents a sustainable mean to face significant concerns, such as wars and political instabilities deriving from oil reserves shortage. Morevoer, the high oil yields and less land use are the main advantages of microalgae. However, in order to make the current technology

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36

Halfhide, Trina Cassandra. "Algae: Opportunities for Biomass Feedstock Production, Wastewater Treatment and Educational Outreach." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5032.

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Algae are a diverse group of simple organisms that lack roots, stems or leaves and are able to use sunlight, carbon dioxide, and nutrients to produce complex compounds, such as carbohydrates, proteins and lipids. These compounds, especially lipids, are highly sought-after by agricultural, nutraceutical and energy interests. Although there is great potential for algae derived biofuels, there are technical and economic challenges associated with their cultivation. Relevant to this dissertation, the environmental impacts associated with algae cultivation can be reduced by using municipal and agri

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Silva, Leonardo Guimarães. "Farinha de algas marinhas (schizochytrium sp.) e vitamina E na alimentação de cordeiros confinados." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/153725.

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Adams, Curtis. "Studies on nitrogen and silicon deficiency in microalgal lipid production." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1955.

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Microalgae are a rich, largely untapped source of lipids. Algae are underutilized, in part, because lipid formation generally is stimulated by stress, such as nutrient deficiency. Nutrient deficiencies reduce growth, resulting in a tradeoff between elevated cellular lipids and abundant cell division. This tradeoff is not well understood. We also have a poor understanding of the physiological drivers for this lipid formation. Here we report on three sets of research: 1) Assessment of species differences in growth and lipid content tradeoffs with high and low level nitrogen deficiency; 2) Invest

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39

Hodgson, Paul Andrew. "The effects of environmental variables upon the lipid class and fatty acyl composition of a marine microalga, Nannochloropsis oculata (Droop) Eustigmatophyceae (Hibberd)." Thesis, University of Stirling, 1990. http://hdl.handle.net/1893/25425.

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Detailed analyses of the lipid class and fatty acid composition were carried out for the marine microalgal species Nannoch/oropsis oculata (Droop) (CCAP strain no. 849/1) of the division Eustigmatophyceae (Hibberd). The alga was grown in batch and continuous culture using a novel culturing apparatus, the cage culture turbidostat, the construction of which is detailed in full. The total lipid extract yielded by the alga varied in a growth-phase dependent manner within the range 25 % to 80 % of the lyophilised cell mass. Of this between 40 % and 70 % was recovered as fatty acid methyl esters (FA

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40

Butler, Reece. "Effect of Heavy Metals Found in Flue Gas on Growth and Lipid Accumulation for Green Algae Scenedesmus obliquus." DigitalCommons@USU, 2011. https://digitalcommons.usu.edu/etd/1159.

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This study evaluated the effect of several heavy metals that are present in flue gases on the algae, focusing on the growth and accumulation of lipids in the algae that can be converted to biodiesel. Concentrations for the heavy metals were calculated based on literature and assumptions. Metals were tested individually first at the highest concentrations that might be present (reference concentrations). The metals and their reference concentrations were: arsenic at 1.56 mg/L, cadmium at 0.3 mg/L, chromium at 2.6 mg/L, cobalt at 0.32 mg/L, copper at 2.62 mg/L, lead at 1.09 mg/L, nickel at 5.08

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Coogan, Melinda Ann La Point Thomas W. "Bioaccumulation of triclocarban, triclosan, and methyl-triclosan in a North Texas wastewater treatment plant receiving stream and effects of triclosan on algal lipid synthesis." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-3986.

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Coogan, Melinda Ann. "Bioaccumulation of Triclocarban, Triclosan, and Methyl-triclosan in a North Texas Wastewater Treatment Plant Receiving Stream and Effects of Triclosan on Algal Lipid Synthesis." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc3986/.

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Triclosan (TCS) and triclocarban (TCC), widely used antimicrobial agents found in numerous consumer products, are incompletely removed by wastewater treatment plant (WWTP) processing. Methyl-triclosan (M-TCS) is a more lipophilic metabolite of its parent compound, TCS. The focus of this study was to quantify bioaccumulation factors (BAFs) for TCS, M-TCS, and TCC in Pecan creek, the receiving stream for the City of Denton, Texas WWTP by using field samples mostly composed of the alga Cladophora sp. and the caged snail Helisoma trivolvis as test species. Additionally, TCS effects on E. coli a

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De, Mill Chad R. "Integrated Life Cycle and Techno-economic Assessment of the Conversion of High Productivity, Low Lipid Algae to Renewable Fuels." DigitalCommons@USU, 2017. https://digitalcommons.usu.edu/etd/5262.

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The production of alternative transportation fuels is imperative to meet future energy demands without contributing to global climate change. Advances in alternative processing techniques that have emerged due to interest in microalgae as a feedstock have led to a variety of potential processing pathways for the production of bio-based fuels. A major hurdle in the algal production process is maintaining a fast and stable algae culture. Monocultures, developed for their high lipid content, suffer from low productivity, are susceptible to crashes and require a constant supply of carbon dioxide t

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Willis, Robert M. "ncreased Production and Extraction Efficiency of Triacylglycerides from Microorganisms and an Enhanced Understanding of the Pathways Involved in the Production of Triacylglycerides and Fatty Alcohols." DigitalCommons@USU, 2013. http://digitalcommons.usu.edu/etd/1530.

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The continued increase in the demand for fossil fuels combined with their ever dwindling supply has prompted the search for a suitable alternative fuel. The research contained within this dissertation seeks to increase the lipid content of cellular feedstocks, improve extraction efficiencies of lipids, and understand the pathways involved in the production of fatty alcohols and triacylglycerides from microbial feedstocks. As part of this research the diatom, Cheatoceros gracilis, was grown at small and large scale to determine optimal growing conditions. No apparent nutrient stress trigger was

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Lingaraju, Bala P. "Removal of Nitrogen from Wastewater Using Microalgae." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1321888338.

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46

Willis, Robert M. "Increased Production and Extraction Efficiency of Triacylglycerides from Microorganisms and an Enhanced Understanding of the Pathways Involved in the Production of Triacylglycerides and Fatty Alcohols." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1530.

Full text

Abstract:

The continued increase in the demand for fossil fuels combined with their ever dwindling supply has prompted the search for a suitable alternative fuel. The research contained within this dissertation seeks to increase the lipid content of cellular feedstocks, improve extraction efficiencies of lipids, and understand the pathways involved in the production of fatty alcohols and triacylglycerides from microbial feedstocks. As part of this research the diatom, Cheatoceros gracilis, was grown at small and large scale to determine optimal growing conditions. No apparent nutrient stress trigger was

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47

Yang, Ying. "Effects of Temperature, Light Intensity and Quality, Carbon Dioxide, and Culture Medium Nutrients on Growth and Lipid Production of Ettlia oleoabundans." Digital WPI, 2014. https://digitalcommons.wpi.edu/etd-dissertations/42.

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Ettlia oleoabundans, a freshwater green microalga, was grown under different environmental conditions to study its growth, lipid yield and quality for a better understanding of the fundamental physiology of this oleaginous species. E. oleoabundans showed steady increase in biomass under low temperature and low light intensity, and at high temperature lipid cell content significantly increased independent of nitrate depletion. Studies on light quality showed that red light treatment did not change the biomass concentration, but stimulated lipid yield especially oleic acid, the most desirable bi

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Guha, Roy Aimee. "Microalgal growth and lipid production : trends, multiple regression models, and validation in a photobioreactor." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:282874c9-06d4-41bf-bdc9-fb4ff515f57c.

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Algae are a promising new source of oil for biodiesel. They are aquatic organisms that do not require cropland, and they can produce many useful side-products for bioenergy, aquaculture, and nutraceutical production. To be cost-effective, algae need high and reliable oil productivities; however, there is still a great deal to learn about the effects of culturing conditions on algae growth rates and lipid production. These culturing conditions include light intensity, gas flow, use of CO<sub>2</sub>, and culture volume. An extensive database of published research on algae growth rates and lipid

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DeMicco, Erik David. "Feasibility of Using Biofuel By-Products as a Sustainable Nutritional Resource for Aquaculture Production of Litopenaeus vannamei." NSUWorks, 2015. http://nsuworks.nova.edu/occ_stuetd/387.

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Many different algal species can provide an acceptable protein ingredient, with good digestibility, for shrimp feeds. Compared to fish meal, similar protein, carbohydrate, and lipid levels can be found in select algal species. Traditional shrimp diets in aquaculture rely on fish meal and fish oil from pelagic fish fisheries. A reduction or elimination of these ingredients would reduce the dependency of shrimp aquaculture on offshore fisheries and increase economic competiveness. Biofuel production produces algal by-products of potential use to aquaculturists that might reduce or eliminate the

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Šimanský, Samuel. "Optimalizace extrakce pigmentů z buněk kvasinek a řas." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-432694.

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The presented diploma thesis deals with the extraction and storage stability of lipophilic pigments produced by selected strains of yeasts and algae. In this thesis, there was studied the influence of the selected solvents on the efficiency of extraction, as well as the effect of ambient temperature on the stability of the pigments during storage. The work is divided into two main parts, theoretical and practical part. In the theoretical part knowledge about algae, yeasts and their cultivation parameters is summarized. Furthermore, some information regarding the selected lipid metabolites, the

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