Effect of High Pressure Homogenization on Aqueous Phase Solvent Extraction of Lipids from Nannochloris Oculata Microalgae
Journal of Energy and Natural Resources
Volume 1, Issue 1, December 2012, Pages: 1-7
Received: Nov. 29, 2012;
Published: Dec. 30, 2012
Views 4230 Downloads 304
Nalin Samarasinghe, Department of Biological and Agricultural Engineering, Scoates Hall, TAMU, Texas A&M University, College Station TX USA
Sandun Fernando, Department of Biological and Agricultural Engineering, Scoates Hall, TAMU, Texas A&M University, College Station TX USA
Brock Faulkner, Department of Biological and Agricultural Engineering, Scoates Hall, TAMU, Texas A&M University, College Station TX USA
The ability to extract lipids from high-moisture Nannochloris Oculata algal biomass disrupted with high pressure homogenization was investigated. During the first phase, the effect of high pressure homogenization (system pressure and number of passes) on disrupting aqueous algae (of different concentrations and degree of stress) was investigated. Se-condly, the effect of degree of cell wall disruption on the amount of lipids extracted with three solvents, namely: hexane, dichloromethane and chloroform, were compared. Studies reveled that high pressure homogenization is effective on cell disruption while the amount of system pressure being the most significant factor affecting the degree of cell breakage. Al-though the number of passes had some impact, the level of disruption seemed to level-off after a certain number of passes. The study revealed that slightly polar solvents (such as chloroform and dichloromethane) performed better in aqueous-phase lipid extractions as compared to hexane. Also, it was revealed that it was not necessary to disrupt the algal cells completely to achieve appreciable levels of lipid yields. In fact, conditions that exerted only 20% of the cells to completely disrupt, allowed sufficient damage to liberate most of the lipids contained in the remainder of the cells.
Effect of High Pressure Homogenization on Aqueous Phase Solvent Extraction of Lipids from Nannochloris Oculata Microalgae, Journal of Energy and Natural Resources.
Vol. 1, No. 1,
2012, pp. 1-7.
Rakesh Agrawal, N.R.S., Fabio H. Ribeiro, W. Nicholas Delgass, Sustainable fuel for the transportation sector. PNAS, 2007. 104(12): p. 4828-4833.
Ross, A.B., et al., Investigation of the pyrolysis behaviour of brown algae before and after pre-treatment using PY-GC/MS and TGA. Journal of Analytical and Applied Pyrolysis, 2009. 85(1-2): p. 3-10.
Beer, L.L., et al., Engineering algae for biohydrogen and biofuel production. Current Opinion in Biotechnology, 2009. 20(3): p. 264-271.
Minowa, T., et al., Oil production from algal cells of Duna-liella tertiolecta by direct thermochemical liquefaction. Fuel, 1995. 74(12): p. 1735-1738.
Molina Grima, E., et al., Recovery of microalgal biomass and metabolites: process options and economics. Biotechnology Advances, 2003. 20(7–8): p. 491-515.
Sheehan, J., et al., Look Back at the U.S. Department of Energy's Aquatic Species Program: Biodiesel from Algae; Close-Out Report, 1998.
Golueke, C.G. and W.J. Oswald, Harvesting and Processing Sewage-Grown Planktonic Algae. Journal (Water Pollution Control Federation), 1965. 37(4): p. 471-498.
Slocombe, S.P., et al., A rapid and general method for mea-surement of protein in micro-algal biomass. Bioresource Technology, 2013. 129(0): p. 51-57.
Sukenik, A., O. Zmora, and Y. Carmeli, Biochemical quality of marine unicellular algae with special emphasis on lipid composition. II. Nannochloropsis sp. Aquaculture, 1993. 117(3-4): p. 313-326.
Mendes-Pinto, M.M., et al., Evaluation of different cell disruption processes on encysted cells of Haematococcus pluvialis: effects on astaxanthin recovery and implications for bio-availability. Journal of Applied Phycology, 2001. 13(1): p. 19-24.
Samarasinghe, N., et al., Algal cell rupture using high pres-sure homogenization as a prelude to oil extraction. Renewable Energy, 2012. 48(0): p. 300-308.
Chi-Sheng Wu, J. and E.-H. Lee, Ultrafiltration of soybean oil/hexane extract by porous ceramic membranes. Journal of Membrane Science, 1999. 154(2): p. 251-259.
Sathish, A. and R.C. Sims, Biodiesel from mixed culture algae via a wet lipid extraction procedure. Bioresource Technology, 2012. 118(0): p. 643-647.
Cheng, C.-H., et al., Comparative study of lipid extraction from microalgae by organic solvent and supercritical CO2. Bioresource Technology, 2011. 102(21): p. 10151-10153.
Chisti, Y., Biodiesel from microalgae. Biotechnology Ad-vances, 2007. 25(3): p. 294-306.
Sheehan, J., et al., Look back at the U.S. Department of Energy's aquatic species program: biodiesel from algae; close-out report, 1998.
Tredici, M.R. and R. Materassi, From open ponds to vertical alveolar panels - the italian experience in the development of reactors for the mass cultivation of phototrophic micro-organisms. Journal of Applied Phycology, 1992. 4(3): p. 221-231.
Levin, G.V., et al., Harvesting of algae by froth flotation. Applied and Environmental Microbiology, 1962. 10(2): p. 169-175.
Crowe, B., et al., A Comparison of Nannochloropsis salina Growth Performance in Two Outdoor Pond Designs: Con-ventional Raceways versus the ARID Pond with Superior Temperature Management. International Journal of Chemical Engineering, 2012. 2012: p. 9.