scholarly journals Hazelnut oil production using pressing and supercritical CO2 extraction

2016 ◽  
Vol 70 (4) ◽  
pp. 359-366 ◽  
Author(s):  
Stela Jokic ◽  
Tihomir Moslavac ◽  
Krunoslav Aladic ◽  
Mate Bilic ◽  
Djurdjica Ackar ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Oil Production ◽  
Extraction Process ◽  
Quality Parameters ◽  
Rosemary Extract ◽  
Hazelnut Oil ◽  
Residual Oil ◽  
Supercritical Co2 Extraction ◽  
Effects Of Temperature ◽  
Defatted Cake

In the hazelnut oil production it is very important to find an appropriate method to recover the oil from kernels. The objective of this study was to evaluate the oil extraction process from hazelnuts by screw pressing followed by extraction with supercritical CO2. The effects of temperature head presses, frequency and nozzle size in pressing experiments on oil temperature and recovery were monitored. The optimal pressing condition using response surface methodology was determined. In obtained hazelnut oil the following quality parameters were determined: peroxide value 0 mmol O2/kg, free fatty acids 0.23%, insoluble impurities 0.42%, moisture content 0.045%, iodine value 91.55 g I2/100 g, saponification value 191.46 mg KOH/g and p-anisidine value 0.19. Rosemary extract was the most effective in protecting the oil from oxidative deterioration. The residual oil that remained in the cake after pressing was extracted totally with supercritical CO2 and such defatted cake, free of toxic solvents, can be used further in other processes.

Kaempferol Extraction from Cuscuta reflexa using Supercritical Carbon Dioxide and Separation of Kaempferol from the Extracts

2011 ◽  
Vol 7 (4) ◽  
Author(s):  
Pranabendu Mitra ◽  
Kyu -Seob Chang ◽  
Dae-Seok Yoo
Keyword(s):  
Supercritical Co2 ◽  
Extraction Process ◽  
Optimum Conditions ◽  
Supercritical Co2 Extraction ◽  
Independent Variables ◽  
Cuscuta Reflexa ◽  
Optimal Processing ◽  
Layer Chromatography ◽  
Temperature Time ◽  
Central Composite

Kaempferol, a strong antioxidant, was extracted from Cuscuta reflexa (a medicinal plant) using supercritical CO2 and separated using thin-layer chromatography, column chromatography and HPLC analysis. A rotatable central composite design was used to determine the influence of process variables and arrive at optimal processing conditions in the supercritical CO2 extraction process of kaempferol. The kaempferol yield was effectively modelled as a function of the independent variables (temperature, time and pressure). The kaempferol yield increased with the increasing of temperature and time and decreasing of pressure of the supercritical CO2 extraction process. The predicted kaempferol yield at the optimum point was 52.92 µg/g and the optimum conditions were 50.7°C for 132.6 min and 15.9 MPa.

Analysis of Impact on the Wafer Surface Performance of Supercritical CO2 Extraction

2010 ◽  
Vol 160-162 ◽  
pp. 704-708
Author(s):  
Ru Bing Han
Keyword(s):  
Photoelectron Spectroscopy ◽  
Supercritical Co2 ◽  
Organic Pollution ◽  
Extraction Process ◽  
Surface Cleaning ◽  
Wafer Surface ◽  
Good Prospect ◽  
Supercritical Co2 Extraction ◽  
Extraction Technology ◽  
Surface Performance

The surface of the wafer is easy to be polluted by the organic pollution material. The supercritical fluid extraction technology works well in extracting organic pollution material. Whether the extraction process influences the surface performance of the wafer can be determined through the SEM(scanning electron microscope), AFM (atomic force microscope), and XPS (X-ray photoelectron spectroscopy). Compare the feature and the electronic structure of the wafer before and after supercritical CO2 extraction to get how supercritical CO2 extraction process influences the wafer surface performance. The conclusion helps to determine whether the extraction technology can be applied in the wafer surface cleaning technology. Tests show that supercritical CO2 extraction process almost does not influence the surface performance of the wafer, and, the supercritical CO2 extraction technology has a good prospect in the wafer cleaning.

Supercritical CO2 extraction and transesterification of the residual oil from industrial palm kernel cake with supercritical methanol

2019 ◽  
Vol 147 ◽  
pp. 179-187 ◽  
Author(s):  
Wanessa Almeida da Costa ◽  
Fernanda Wariss Figueiredo Bezerra ◽  
Mozaniel Santana de Oliveira ◽  
Eloísa Helena de Aguiar Andrade ◽  
Ana Paula Martins dos Santos ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Palm Kernel ◽  
Palm Kernel Cake ◽  
Residual Oil ◽  
Supercritical Methanol ◽  
Supercritical Co2 Extraction

scholarly journals Optimisation and modelling of supercritical CO2 extraction process of carotenoids from carrot peels

2018 ◽  
Vol 133 ◽  
pp. 94-102 ◽  
Author(s):  
Micael de Andrade Lima ◽  
Dimitris Charalampopoulos ◽  
Afroditi Chatzifragkou
Keyword(s):  
Supercritical Co2 ◽  
Extraction Process ◽  
Supercritical Co2 Extraction

scholarly journals Features and Advantages of Supercritical CO2 Extraction of Sea Cucumber Cucumaria frondosa japonica Semper, 1868

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4088
Author(s):  
Alexander Zakharenko ◽  
Denis Romanchenko ◽  
Pham Duc Thinh ◽  
Konstantin Pikula ◽  
Cao Thi Thuy Hang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Co2 ◽  
Extraction Process ◽  
Triterpene Glycosides ◽  
Supercritical Extraction ◽  
Supercritical Co2 Extraction ◽  
Extraction Step ◽  
Carbon Dioxide Extraction ◽  
Conventional Solvent Extraction ◽  
Cucumaria Frondosa

Extraction process of Cucumaria frondosa japonica Semper, 1868, which are subspecies of Cucumaria frondosa (Gunnerus, 1767), were studied. It was shown that supercritical carbon dioxide extraction of holothuria was more effective than conventional solvent extraction. Step-by-step extraction with carbon dioxide followed by supercritical extraction with the addition of a co-solvent of ethanol can almost double the yields of extracts of triterpene glycosides, styrenes and carotenoids. Moreover, the fraction of triterpene glycosides practically does not contain colored impurities, in contrast to traditional ethanol extraction. The obtained extracts by HPLC in combination with tandem mass spectrometry (HPLC-MS/MS) identified 15 triterpene glycosides, 18 styrene compounds and 14 carotenoids. Supercritical extraction made it possible to obtain extracts with yields superior to conventional hexane and alcohol extracts. Moreover, such an approach with the use of supercritical fluid extraction (SFE) and subsequent profiling of metabolites can help with the study of holothuria species that are not as well studied.

Supercritical CO2 Extraction Process

2021 ◽  
pp. 93-104
Author(s):  
Kaavya Rathnakumar ◽  
Ahmed R. A. Hammam ◽  
Juan Camilo Osorio ◽  
Sergio I. Martinez-Monteagudo
Keyword(s):  
Supercritical Co2 ◽  
Extraction Process ◽  
Supercritical Co2 Extraction

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.

Optimization of a coconut oil extraction process with supercritical CO2 considering economical and thermal variables

2021 ◽  
pp. 105160
Author(s):  
E. Torres-Ramón ◽  
C.M. García-Rodríguez ◽  
K.H. Estévez-Sánchez ◽  
I.I. Ruiz-López ◽  
G.C. Rodríguez-Jimenes ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Coconut Oil ◽  
Extraction Process ◽  
Oil Extraction
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