An investigation of ultrasound effect on microalgal cell integrity and lipid extraction efficiency. Keris-Sen, U., D., Sen, U., Soydemir, G., & Gurol, M., D. BIORESOURCE TECHNOLOGY, 152:407-413, 2014. abstract bibtex In this study, different ultrasound power intensities (0.1-0.5 W mL(-1))
were applied at a frequency of 30 kHz and for durations of 5-60 min to
mixed microalgal cultures, one cultivated in BG11 medium, and the other
in secondary effluent wastewater. The ultrasonic effect on cell
disruption was revealed by increased concentrations of protein and
carbohydrate released into the solution, and a decreased concentration
of total suspended solids in cell suspension. The highest intercellular
material release was achieved at an ultrasonic energy intensity of 0.4
kWh L-1, while the effect of ultrasound on cell disruption was reduced
at higher energy intensities. Additionally, the ultrasonic effect on
lipid extraction efficiency was studied in the presence of two different
solvents, n-hexane and chloroform/methanol mixture. The application of
ultrasound at 0.4 kWh L-1, provided 1.5-2.0-fold increase in lipid
extraction yields in the presence of the solvents. (C) 2013 Elsevier
Ltd. All rights reserved.
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title = {An investigation of ultrasound effect on microalgal cell integrity and lipid extraction efficiency},
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abstract = {In this study, different ultrasound power intensities (0.1-0.5 W mL(-1))
were applied at a frequency of 30 kHz and for durations of 5-60 min to
mixed microalgal cultures, one cultivated in BG11 medium, and the other
in secondary effluent wastewater. The ultrasonic effect on cell
disruption was revealed by increased concentrations of protein and
carbohydrate released into the solution, and a decreased concentration
of total suspended solids in cell suspension. The highest intercellular
material release was achieved at an ultrasonic energy intensity of 0.4
kWh L-1, while the effect of ultrasound on cell disruption was reduced
at higher energy intensities. Additionally, the ultrasonic effect on
lipid extraction efficiency was studied in the presence of two different
solvents, n-hexane and chloroform/methanol mixture. The application of
ultrasound at 0.4 kWh L-1, provided 1.5-2.0-fold increase in lipid
extraction yields in the presence of the solvents. (C) 2013 Elsevier
Ltd. All rights reserved.},
bibtype = {article},
author = {Keris-Sen, Ulker D and Sen, Unal and Soydemir, Gulfem and Gurol, Mirat D},
journal = {BIORESOURCE TECHNOLOGY}
}
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