Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 27 for “"Lipid extraction"”.
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Novel technologies for microalgae cultivation and subsequent lipid extraction
… that photosynthetic efficiency, growth rate and lipid content of microalgae are still low if compared to the rate of fuel demand of the transportation market. In order to overcome such drawback, scientific community is moving on three main directions. The first one is the identification of …
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Optimisation of protein and lipid extraction from low-value fish sources and investigation of high-value applications
… value nutritional applications for protein and lipid raw material extracted from low-value pelagic marine fish, specifically blue whiting (Micromesistius poutassou), boarfish (Capros aper), and Atlantic herring (Clupea harengus), and to assess the effects of such products on the recipient’s gut …
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Lipid Production from a Louisiana Native Chlorella vulgaris/Leptolyngbya sp. Co-culture for Biofuel Applications
… for biofuel production mainly due to the high lipid productivity and minimum land competition with food crops. In this research, a Louisiana native Chlorella vulgaris/Leptolyngbya sp. co-culture was selected for lipid production. The goal of this work is to improve the lipid productivity and …
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Characterization of Value Added Proteins and Lipids form Microalgae
… have been investigated for proteins and lipids production. Protein fraction was quantified using Bicinchoninic acid (BCA) assay. Protein content in Nannochloris sp. was 16.69 ±4.07 % of dry mass and in Amphora sp. it was 39.89 ±2.09 % of dry mass. Enzyme assays were conducted …
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Characterization of Fresh Water Microalgae from East Tennessee for Biodiesel Production
… relatively faster growth rate, availability, and lipid content. Microalgae (JC and BT) growing in local water bodies were collected, selected on section media containing antibiotics, and used for characterizations. Experiments were conducted to study and evaluate the optimum growing conditions. …
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Organic residue analysis of Red Lustrous Wheelmade Ware vessels traded across the eastern Mediterranean during the Late Bronze Age
… analysed for organic residues using standard lipid extraction techniques. Seven residues from a previous study were re-examined. Gas chromatography-mass spectrometry identified four materials ¿ beeswax, bitumen, fat/oil and resin. Beeswax, found only in vessels from Hittite sites in Turkey, …
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Identifying, Monitoring, Quantifying and Converting Algae to Bio-Fuels in Bio-Reactors
… were examined as a source of carbohydrates and lipids for the production of bio-fuels in bio-reactors. The length of storage time, storage conditions, sugar and lipid extraction processes, and fuel production were studied. The results show that if the algae is stored dry (0.015 g/g algae even …
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Pulsed electric field treatment of Arthrospira platensis and Saccharomyces cerevisiae
… and facilitation lysis of microbial cells for lipid extraction. The present study aimed to investigate the efficiency of PEF treatment of Arthrospira platensis and Saccharomyces cerevisiae using test cells with different types of electrodes and impulses with different waveshapes. An equivalent …
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Microbial flocculation for large scale harvesting of marine microalgae for the production of biodiesel.
… anaerobic digestion of the biomass residue after lipid extraction. Further experiments are required to optimise the mixing time and the scale up.
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An investigation of the effect of surfactants on transdermal permeation.
… the stratum corneum, especially for changes in lipid structure. Both DSC and FTIR were able to show changes in lipid structure which was associated with increases in permeability. DSC appeared to be more sensitive to these lipid changes than FTIR, and a good correlation was obtained between the …
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Beyond the vessel: Organic residue analysis of Late Bronze and Early Iron Age south-east European pottery
… mass spectrometry. Two methods of lipid extraction were compared in a pilot study compressing 30 potsherds from Kaptol (solvent vs. acid extraction). This study revealed that more information was obtained by acid extraction, thus it was selected as the main method of extraction for …
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Dairy phospholipids: analysis, enrichment and biological application
Dairy phospholipids (PLs) are complex polar lipids with a unique amphiphilic nature underpinning their structural integrity as a membrane surrounding milk fat globules- the milk fat globule membrane (MFGM). The techno-functional capabilities, nutritional benefits and putative health associations of …
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Spatial, temporal and within-species variation in the foraging ecology of a marine predator across a dynamic seascape
… arctic marine mammal species after chemical lipid extraction with results varying across species, developed species- and tissue-specific lipid normalization models, and a species-tissue-specific decision framework for the best lipid correction approach. I then quantified spatial and temporal …
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Natural variation in the human plasma lipidome signature using mass spectrometry: relevance to healthy ageing
… brain health an important research priority. Lipidomics, a subfield of omics, involves characterisation and quantification of total lipids in biological systems. Since brain lipids influence protein function and synaptic throughput in neurons, lipidomics may help to uncover dysregulated …
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Nutritional requirements of Treponema denticola and Treponema vincentii
… were destroyed by trypsin and by lipase. Lipid extraction of alpha globulin showed that both a protein and a lipid fraction were required for growth. Sodium salts of either oleic acid (cis-18:1) or elaidic acid (trans-18:1), added to 0.4% delipified alpha globulin supplemented media at a …
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Uso de biomassa de microalgas e cianobactérias cultivadas em águas residuais de avicultura como potencial energético na produção de biodiesel e amônia como transportadora de hidrogênio
… cyanobacterium was monitored by chlorophyll (a) extraction using the solvent suspension method (SSM). Bacterial growth was monitored by the microdroplet plating technique. Wastewater characterization was performed to determine nitrogen by ion chromatography, phosphorus and chemical oxygen demand …
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BIODIESEL PRODUCTION THROUGH MICROWAVE ASSISTED TRANSESTERIFICATION OF MICROBIAL CELLS
… were heated under microwave radiation to extract lipid and produce biodiesel through in-situ transesterification. Firstly, the yeast growth with crude glycerol was studied. When cultured in a one-stage fed-batch process wherein crude glycerol and nitrogen source were fed intermittently for 12 …
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Genetic and phylogenetic characterization of microalgae strains in view of their exploitation for CO2 capture and biofuel production
… should be overcome. In particular, biomass and lipid productivities should be further increased and all the downstream processes, from harvesting to lipid extraction, should be optimized. To these aims, high efforts involving high investments should be done in order to implement an intensive …
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Investigating mechanisms of triacylglycerol synthesis induced by nitrogen depletion in the diatom Phaeodactylum tricornutum and characterising its diacylglycerol acyltransferases and phospholipid: diacylglycerol acyl transferase
… a systematic review. Comprehensive analysis of lipid metabolism and autophagy genes was undertaken. Analysis of regulated genes supports involvement of central pathways and lipid metabolism in TAG accumulation: acetyl-CoA synthesis may increase while FA synthesis, the Kennedy pathway, …
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The effect of serum on the hypodynamic frog heart
… changes, chymotrypsin and lipase treatment and lipid extraction in an attempt to determine the nature of the cardioactive component(s). During the various stages of treatment the fractions were tested on the heart for bioactivity. Boiling, pH changes and chymotrypsin treatment failed to denature …
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