Comparative study of lipid extraction from microalgae by organic solvent and supercritical CO2

2011 ◽  
Vol 102 (21) ◽  
pp. 10151-10153 ◽  
Author(s):  
Chen-Hsi Cheng ◽  
Tz-Bang Du ◽  
Hsien-Chueh Pi ◽  
Shyue-Ming Jang ◽  
Yun-Huin Lin ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Comparative Study ◽  
Supercritical Co2 ◽  
Lipid Extraction

scholarly journals Supercritical CO2 Extraction of Nannochloropsis sp.: A Lipidomic Study on the Influence of Pretreatment on Yield and Composition

Molecules ◽  
2018 ◽  
Vol 23 (8) ◽  
pp. 1854 ◽  
Author(s):  
Kathy Elst ◽  
Miranda Maesen ◽  
Griet Jacobs ◽  
Leen Bastiaens ◽  
Stefan Voorspoels ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Neutral Lipids ◽  
Lipid Extraction ◽  
Fatty Acid Distribution ◽  
Extraction Yield ◽  
Partial Hydrolysis ◽  
Complex Nature ◽  
Supercritical Co2 Extraction ◽  
Optimized Conditions ◽  
Chloroform Methanol

Algal lipids have gained wide interest in various applications ranging from biofuels to nutraceuticals. Given their complex nature composed of different lipid classes, a deep knowledge between extraction conditions and lipid characteristics is essential. In this paper, we investigated the influence of different pretreatments on lipid extraction with supercritical CO2 by a lipidomic approach. Pretreatment was found to double the total extraction yield, thereby reaching 23.1 wt.% comparable to the 26.9 wt.% obtained with chloroform/methanol. An increase in acylglycerides was concurrently observed, together with a nearly doubling of free fatty acids indicative of partial hydrolysis. Moreover, an alteration in the distribution of glyco- and phospholipids was noted, especially promoting digalactosyldiglycerides and phosphatidylcholine as compared to monogalactosyldiglycerides and phosphatidylglycerol. At optimized conditions, supercritical CO2 extraction provided a lipid extract richer in neutral lipids and poorer in phospholipids as compared to chloroform/methanol, though with a very similar fatty acid distribution within each lipid class.

Synergistic effect of supercritical CO2 and organic solvent on exfoliation of graphene: experiment and atomistic simulation studies

2019 ◽  
Vol 21 (39) ◽  
pp. 22149-22157 ◽  
Author(s):  
Lixi Liu ◽  
Yan Chen ◽  
Fei Dang ◽  
Yilun Liu ◽  
Xiaogeng Tian ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Organic Solvent ◽  
Supercritical Co2 ◽  
Atomistic Simulation ◽  
Atomistic Simulations ◽  
Simulation Studies

The synergistic effect of scCO2 and organic solvent on exfoliation of graphene was studied by experiments and atomistic simulations.

scholarly journals Green Approach Extraction of Perezone from the Roots of Acourtia platyphilla (A. Grey): A Comparison of Four Activating Modes and Supercritical Carbon Dioxide

Molecules ◽  
2019 ◽  
Vol 24 (17) ◽  
pp. 3035 ◽  
Author(s):  
Escobedo-González ◽  
Cabañas ◽  
González ◽  
Sánchez ◽  
Saavedra-Leos ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Comparative Study ◽  
Supercritical Co2 ◽  
New World ◽  
Mechanical Wave ◽  
Internal Reference ◽  
Pharmacological Activities ◽  
Green Approach ◽  
Microwave Irradiations ◽  
Complementary Study

Perezone, a sesquiterpene quinone, is a very important molecule due to its pharmacological activities in addition to the fact that it is considered to be the first secondary metabolite isolated in the new world (America–Mexico, 1852). This study aims to offer a green comparative study about the extraction of the target molecule from the roots of the vegetable specimen Acourtia platyphilla (A. Grey). The study was performed comparing five different modes of extraction: supercritical CO2, electromagnetic infrared and microwave irradiations, mechanical-wave ultrasound versus typical mantle heating procedure. An exhaustive comparative-discussion of the obtained results is provided. It is worth noting that the corresponding quantifications were established using 1H NMR, correlating appropriately the integrals of the vinylic proton H-6 of perezone with the aromatic singlet of p-dinitrobenzene employed as an internal reference. It is also important to highlight that the four presented procedures are novel modes to extract perezone. Finally, a complementary study about the solubility of the target sesquiterpene quinone related to the use of supercritical CO2 is also reported.

scholarly journals Comparison of Conventional and Sustainable Lipid Extraction Methods for the Production of Oil and Protein Isolate from Edible Insect Meal

Foods ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 572 ◽  
Author(s):  
Laroche ◽  
Perreault ◽  
Marciniak ◽  
Gravel ◽  
Chamberland ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Protein Extraction ◽  
Lipid Extraction ◽  
Tenebrio Molitor ◽  
Extraction Methods ◽  
Extraction Yield ◽  
Acheta Domesticus ◽  
Human Consumption ◽  
Alternative Source ◽  
Edible Insect

Edible insects represent an interesting alternative source of protein for human consumption but the main hurdle facing the edible insect sector is low consumer acceptance. However, increased acceptance is anticipated when insects are incorporated as a processed ingredient, such as protein-rich powder, rather than presented whole. To produce edible insect fractions with high protein content, a defatting step is necessary. This study investigated the effects of six defatting methods (conventional solvents, three-phase partitioning, and supercritical CO2) on lipid extraction yield, fatty profiles, and protein extraction and purification of house cricket (Acheta domesticus) and mealworm (Tenebrio molitor) meals. Ethanol increased the lipid extraction yield (22.7%–28.8%), irrespective of the insect meal used or the extraction method applied. Supercritical CO2 gave similar lipid extraction yields as conventional methods for Tenebrio molitor (T. molitor) (22.1%) but was less efficient for Acheta domesticus (A. domesticus) (11.9%). The protein extraction yield ranged from 12.4% to 38.9% for A. domesticus, and from 11.9% to 39.3% for T. molitor, whereas purification rates ranged from 58.3% to 78.5% for A. domesticus and from 48.7% to 75.4% for T. molitor.

Thermal and functional characteristics of defatted bovine heart using supercritical CO2 and organic solvent

2018 ◽  
Vol 99 (2) ◽  
pp. 816-823 ◽  
Author(s):  
M Shafiur Rahman ◽  
Khalid Gul ◽  
Han-Sul Yang ◽  
Jiyeon Chun ◽  
William L Kerr ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Supercritical Co2 ◽  
Functional Characteristics ◽  
Bovine Heart
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