The Hansen theory to choose the best cosolvent for supercritical CO2 extraction of β-carotene from Dunaliella salina

2019 ◽  
Vol 145 ◽  
pp. 211-218 ◽  
Author(s):  
Diego F. Tirado ◽  
Lourdes Calvo
Keyword(s):  
Supercritical Co2 ◽  
Dunaliella Salina ◽  
Supercritical Co2 Extraction ◽  
Β Carotene

scholarly journals Supercritical CO2 Extraction of Bioactive Compounds from Mango (Mangifera indica L.) Peel and Pulp

Foods ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 2201
Author(s):  
José Villacís-Chiriboga ◽  
Stefan Voorspoels ◽  
Maarten Uyttebroek ◽  
Jenny Ruales ◽  
John Van Camp ◽  
...  
Keyword(s):  
Bioactive Compounds ◽  
Supercritical Co2 ◽  
Mangifera Indica ◽  
Extraction Temperature ◽  
Supercritical Co2 Extraction ◽  
Bioactive Content ◽  
Higher Temperature ◽  
Valuable Compounds ◽  
By Products ◽  
Β Carotene

The potential of supercritical CO2 (SC-CO2) for the extraction of bioactive compounds from mango by-products was assessed. Carotenoid extraction was optimized using a design of experiments based on temperature (35, 55 and 70 °C), pressure (10 and 35 MPa) and co-solvent addition (0%, 10% and 20% of ethanol or acetone). Moreover, the co-extraction of phenolic acids, flavonoids and xanthonoids was evaluated in a subset of parameters. Finally, a comparison was made between SC-CO2 and a two-step organic solvent extraction of the bioactive compounds from the pulp and peel fractions of two Ecuadorian varieties. The optimal extraction temperature was found to be dependent on the bioactive type, with phenolics requiring higher temperature than carotenoids. The optimal overall conditions, focused on maximal carotenoids recovery, were found to be 55 °C, 35 MPa and 20% of ethanol. The main carotenoid was β-carotene, while phenolics differed among the varieties. The bioactive content of the peel was up to 4.1-fold higher than in the pulp fraction. Higher antioxidant activity was found in the extracts obtained with organic solvents. SC-CO2 is a promising technology for the isolation of valuable compounds from mango by-products.

Supercritical CO2 extraction of lycopene and β-carotene from ripe tomatoes

1999 ◽  
Vol 44 (1) ◽  
pp. 27-32 ◽  
Author(s):  
Enzo Cadoni ◽  
M Rita De Giorgi ◽  
Elena Medda ◽  
Gianluca Poma
Keyword(s):  
Supercritical Co2 ◽  
Supercritical Co2 Extraction ◽  
Β Carotene

scholarly journals β-Carotene extraction from Dunaliella salina by supercritical CO2

2021 ◽  
Author(s):  
Kristin Ludwig ◽  
Liisa Rihko-Struckmann ◽  
Gordon Brinitzer ◽  
Gerd Unkelbach ◽  
Kai Sundmacher
Keyword(s):  
Supercritical Co2 ◽  
Dunaliella Salina ◽  
Economic Assessment ◽  
Pilot Scale ◽  
Production Costs ◽  
Green Solvent ◽  
Solvent Concentration ◽  
Organic Solvent Extraction ◽  
Potential Alternative ◽  
Β Carotene

AbstractThis paper reports the results of supercritical carbon dioxide (scCO2) extraction of β-carotene from Dunaliella salina as potential alternative to conventional organic solvent extraction. In pilot-scale scCO2 experiments, the pressure, temperature, and co-solvent concentration were varied. The supercritical extraction at 500 bar, 70 °C, and 10 wt% ethanol as co-solvent yielded in the highly efficient pigment recovery of over 90%. Techno-economic assessment demonstrated higher energy consumption for the scCO2 extraction that was compensated by lower solvent costs. Thus, comparable pigment production costs to the reference extraction with n-hexane were estimated for the scCO2 process. Due to the green solvent properties of scCO2 and ethanol, this approach is highly promising for extraction of algal biomass in industrial scale.

scholarly journals Optimized Supercritical CO2 Extraction Enhances the Recovery of Valuable Lipophilic Antioxidants and Other Constituents from Dual-Purpose Hop (Humulus lupulus L.) Variety Ella

Antioxidants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 918
Author(s):  
Nóra Emilia Nagybákay ◽  
Michail Syrpas ◽  
Vaiva Vilimaitė ◽  
Laura Tamkutė ◽  
Audrius Pukalskas ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Antioxidant Properties ◽  
Extraction Yield ◽  
Biologically Active ◽  
High Yield ◽  
Acid Extraction ◽  
Supercritical Co2 Extraction ◽  
Bioactive Constituents ◽  
Total Extract

The article presents the optimization of supercritical CO2 extraction (SFE-CO2) parameters using response surface methodology (RSM) with central composite design (CCD) in order to produce single variety hop (cv. Ella) extracts with high yield and strong in vitro antioxidant properties. Optimized SFE-CO2 (37 MPa, 43 °C, 80 min) yielded 26.3 g/100 g pellets of lipophilic fraction. This extract was rich in biologically active α- and β-bitter acids (522.8 and 345.0 mg/g extract, respectively), and exerted 1481 mg TE/g extract in vitro oxygen radical absorbance capacity (ORAC). Up to ~3-fold higher extraction yield, antioxidant recovery (389.8 mg TE/g pellets) and exhaustive bitter acid extraction (228.4 mg/g pellets) were achieved under the significantly shorter time compared to the commercially used one-stage SFE-CO2 at 10–15 MPa and 40 °C. Total carotenoid and chlorophyll content was negligible, amounting to <0.04% of the total extract mass. Fruity, herbal, spicy and woody odor of extracts could be attributed to the major identified volatiles, namely β-pinene, β-myrcene, β-humulene, α-humulene, α-selinene and methyl-4-decenoate. Rich in valuable bioactive constituents and flavor compounds, cv. Ella hop SFE-CO2 extracts could find multipurpose applications in food, pharmaceutical, nutraceutical and cosmetics industries.

scholarly journals Supercritical CO2 extraction of Moroccan argan (Argania spinosa L.) oil: Extraction kinetics and solubility determination

2021 ◽  
Vol 46 ◽  
pp. 101458
Author(s):  
Adil Mouahid ◽  
Isabelle Bombarda ◽  
Magalie Claeys-Bruno ◽  
Sandrine Amat ◽  
Emmanuelle Myotte ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Oil Extraction ◽  
Supercritical Co2 Extraction ◽  
Extraction Kinetics ◽  
Argania Spinosa ◽  
Solubility Determination

scholarly journals Supercritical CO2 Extraction of Palladium Oxide from an Aluminosilicate-Supported Catalyst Enhanced by a Combination of Complexing Polymers and Piperidine

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 684
Author(s):  
Andrea Ruiu ◽  
Bernhard Bauer-Siebenlist ◽  
Marin Senila ◽  
W. S. Jennifer Li ◽  
Karine Seaudeau-Pirouley ◽  
...  
Keyword(s):  
Energy Saving ◽  
Supercritical Co2 ◽  
Supported Catalyst ◽  
Precious Metals ◽  
Palladium Oxide ◽  
Supercritical Co2 Extraction ◽  
Wide Range

Precious metals, in particular Pd, have a wide range of applications in industry. Due to their scarcity, precious metals have to be recycled, preferably with green and energy-saving recycling processes. In this article, palladium extraction from an aluminosilicate-supported catalyst, containing about 2 wt% (weight%) of Pd (100% PdO), with supercritical CO2 (scCO2) assisted by complexing polymers is described. Two polymers, p(FDA)SH homopolymer and p(FDA-co-DPPS) copolymer (FDA: 1,1,2,2-tetrahydroperfluorodecyl acrylate; DPPS: 4-(diphenylphosphino)styrene), were tested with regards to their ability to extract palladium. Both polymers showed relatively low extraction conversions of approximately 18% and 30%, respectively. However, the addition of piperidine as activator for p(FDA-co-DPPS) allowed for an increase in the extraction conversion of up to 60%.

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