Supercritical CO2 extraction of fatty acids, phenolics and fucoxanthin from freeze-dried Sargassum muticum

2014 ◽  
Vol 27 (2) ◽  
pp. 957-964 ◽  
Author(s):  
Enma Conde ◽  
Andrés Moure ◽  
Herminia Domínguez
Keyword(s):  
Fatty Acids ◽  
Supercritical Co2 ◽  
Sargassum Muticum ◽  
Supercritical Co2 Extraction ◽  
Freeze Dried

scholarly journals Supercritical CO2 Extraction of Narcissus poeticus L. Flowers for the Isolation of Volatile Fragrance Compounds

Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 353
Author(s):  
Renata Baranauskienė ◽  
Petras Rimantas Venskutonis
Keyword(s):  
Aromatic Compounds ◽  
Supercritical Co2 ◽  
Main Part ◽  
Dry Weight ◽  
Monoterpene Hydrocarbon ◽  
Supercritical Co2 Extraction ◽  
Benzyl Benzoate ◽  
Freeze Dried ◽  
Narcissus Poeticus ◽  
Fragrance Compounds

The flowers of Narcissus poeticus are used for the isolation of valuable fragrance substances. So far, as the majority of these substances consist of volatile and sensitive to heat compounds, there is a need of developing effective methods for their recovery. In this study, freeze-dried N. poeticus inflorescences were extracted with pure supercritical CO2 (SFE-CO2) and its mixture with 5% co-solvent ethanol (EtOH) at 40 °C. Extract yields varied from 1.63% (12 MPa) to 3.12% (48 MPa, 5% EtOH). In total, 116 volatile compounds were identified by GC-TOF/MS in the extracts, which were divided into 20 different groups. Benzyl benzoate (9.44–10.22%), benzyl linoleate (1.72–2.17%) and benzyl alcohol (0.18–1.00%) were the major volatiles among aromatic compounds. The amount of the recovered benzyl benzoate in N. poeticus SFE-CO2 extracts varied from 58.98 ± 2.61 (24 MPa) to 91.52 ± 1.36 (48 MPa) mg/kg plant dry weight (pdw). α-Terpineol dominated among oxygenated monoterpenes (1.08–3.42%); its yield was from 9.25 ± 0.63 (12 MPa) to 29.88 ± 1.25 (48 MPa/EtOH) mg/kg pdw. Limonene was the major monoterpene hydrocarbon; (3E)-hexenol and heneicosanol dominated among alcohols and phenols; dihydroactinidiolide and 4,8,12,16-tetramethyl heptadecan-4-olide were the most abundant lactones; heptanal, nonanal, (2E,4E)-decadienal and octadecanal were the most abundant aldehydes. The most important prenol lipids were triterpenoid squalene, from 0.86 ± 0.10 (24 MPa) to 7.73 ± 0.18 (48 MPa/EtOH) mg/kg pdw and D-α-tocopherol, from 1.20 ± 0.04 (12 MPa) to 15.39 ± 0.31 (48 MPa/EtOH) mg/kg pdw. Aliphatic hydrocarbons (waxes) constituted the main part (41.47 to 54.93%) in the extracts; while in case of a 5% EtOH the percentage of alkanes was the lowest. The fraction of waxes may be removed for the separation of higher value fragrance materials. In general, the results obtained are promising for a wider application of SFE-CO2 for the recovery of fragrance substances from N. poeticus flowers.

scholarly journals Effect of drying method on supercritical CO2 extraction of grape seed oil

Poljoprivreda ◽  
2019 ◽  
Vol 25 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Mario Jakobović ◽  
Stela Jokić ◽  
Melita Lončarić ◽  
Snježana Jakobović ◽  
Krunoslav Aladić ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Sample Preparation ◽  
Supercritical Co2 ◽  
Seed Oil ◽  
Grape Seed ◽  
Cabernet Sauvignon ◽  
Drying Method ◽  
Supercritical Co2 Extraction ◽  
White Variety ◽  
Grape Seed Oil

Aim of this study was to monitor the influence of drying method (naturally and chamber drying) and different sample preparation on supercritical CO2 extraction of oil from three grape seed varieties (Graševina, Zweigelt, Cabernet Sauvignon). The highest oil content was obtained from naturally dried screened and washed seeds of red variety Cabernet Sauvignon (14.85%) and lowest from chamber dried screened seeds of white variety Graševina (7.67%). Peroxide value ranged from 0.36 to 1.77 mmol O2/kg oil, free fatty acids 0.28-8.0%, and insoluble impurities 0.05-0.28%. Determined fatty acids were palmitic (6.98-11.58%), stearic (3.82-6.59%), oleic (14.90-19.97%) and linoleic acid (61.82-71.96%) in oil obtained from naturally dried seeds and 6.84-8.68%, 4.12-5.73%, 15.10-20.18% and 67.88-70.76% in oil from chamber dried seeds, respectively. In defatted cakes after supercritical CO2 extraction, protein and fibre content ranged from 8.17 to 9.85% and 34.58 to 43.96%, respectively. According to ANOVA results, sample preparation and drying method had statistically significant influence on grape seed oil extraction.

Influence of Supercritical CO2 Extraction on Fatty Acids Profile, Volatile Compounds and Bioactivities from Rosmarinus officinalis

2018 ◽  
Vol 11 (4) ◽  
pp. 1527-1537 ◽  
Author(s):  
J. Saúl García-Pérez ◽  
Sara Paulina Cuéllar-Bermúdez ◽  
Alejandra Arévalo-Gallegos ◽  
Carmen Salinas-Salazar ◽  
José Rodríguez-Rodríguez ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Volatile Compounds ◽  
Supercritical Co2 ◽  
Rosmarinus Officinalis ◽  
Supercritical Co2 Extraction ◽  
Fatty Acids Profile

Evaluation of different variables on the supercritical CO2 extraction of oat (Avena sativa L.) oil; main fatty acids, polyphenols, and antioxidant content

2019 ◽  
Vol 88 ◽  
pp. 118-124 ◽  
Author(s):  
Kenia Fernández-Acosta ◽  
Ivan Salmeron ◽  
David Chavez-Flores ◽  
Ildebrando Perez-Reyes ◽  
Victor Ramos ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Avena Sativa ◽  
Supercritical Co2 ◽  
Supercritical Co2 Extraction ◽  
Antioxidant Content

Reduction of Warmed-Over Flavor Volatiles from Freeze-Dried Lean by Supercritical CO2 Extraction

1999 ◽  
Vol 64 (3) ◽  
pp. 387-389 ◽  
Author(s):  
A. Thongwong ◽  
L.N. Fernando ◽  
I.U. Grun ◽  
A.D. Clarke
Keyword(s):  
Supercritical Co2 ◽  
Supercritical Co2 Extraction ◽  
Freeze Dried

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.

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