Supercritical carbon dioxide extraction of wheat plumule oil

Zhang, Xuewu; Sun, Tao; Sun, Zhongyi; Liu, Xin; Gu, De-Xiang; Zeng, Xiang-Yue

doi:10.1016/s0260-8774(98)00078-8

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…Oil recovery increased with temperature; in isobaric conditions there was a statistically significant difference (P = 0.0346) between performing the extraction at 80 or 100°C ( Table 2). These results are in agreement with the findings of other researchers (8,9,11). Even with these increased recoveries, the oil recoveries from the FOSFA method could not be matched.…”

Section: Resultssupporting

confidence: 87%

“…The benefits of SFE-speed and economy-would be lost. This is a general observation based on studies performed by other researchers (8)(9)(10).…”

Section: Resultssupporting

confidence: 67%

“…Time, pressure, temperature, and sample particle size have been shown to affect the oil solubility during SFE (8). Experiments were carried out to optimize time, temperature, pressure, grinding, and the number of extractions to increase the oil recoveries to match FOSFA results and to study the effect of the extraction method on the composition of the lipids removed.…”

Section: Resultsmentioning

confidence: 99%

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An evaluation of supercritical fluid extraction as an analytical tool to determine fat in canola, flax, solin, and mustard

Barthet¹,

Daun²

2002

J Americ Oil Chem Soc

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Supercritical fluid extraction (SFE) with carbon dioxide was used to extract oil from soft oilseeds (flax, solin, canola, and mustard). Oil content determinations from the SFE method AOCS Am 3-96, with and without ethanol as a modifier, were compared to results obtained with an exhaustive extraction using petroleum ether (FOSFA as in AOCS Am 2-93). Without the modifier, oil recoveries using SFE were 10 to 15% lower than oil contents by the FOSFA method for the flax and canola samples. For mustard, the oil recoveries by SFE were about 20 to 30% lower than oil contents by the FOSFA method.In the presence of the modifier, oil recoveries for flax and canola were about 3% lower than the FOSFA recoveries. Varying the time, temperature, and amount of modifier (ethanol) showed that recoveries increased with time, pressure, temperature, and amount of modifier independently of the oilseeds tested. Kinetics of the SFE extraction showed that the oil recoveries increased with the extraction time and reached a plateau after 60 min. Multiple extractions (2 × 30 min), however, gave better recoveries than a single extraction for the same amount of time (60 min). The best results were obtained using multiple extractions without modifier or a combination of multiple extractions first without and then with 15% modifier. Under these last two conditions, oil recoveries were close to 100% for flax, solin, and canola, but mustard oil recoveries were still 10% lower than recoveries using the FOSFA method. Mustard samples gave the lowest oil recovery from SFE when compared to FOSFA method recoveries whatever conditions were tested, suggesting a matrix effect on the oil recovery. The acyl lipid content of the various extracts was studied using the sum of all FA expressed as TAG as a measure of acyl lipid extraction. The acyl lipid contents of the extracts were close to 100% when no modifier was used during the SFE. In the presence of modifier, the acyl lipid contents of the extracts were 10 to 15% lower than the results obtained without modifier. The amount of acyl lipid in the extract decreased as the quantity of modifier increased. This suggests that increasing the ethanol modifier increased the amount of polar compounds extracted without significantly increasing the total amount of lipids. The FA profiles were constant throughout the various extraction procedures.

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Section: Resultssupporting

confidence: 87%

“…The benefits of SFE-speed and economy-would be lost. This is a general observation based on studies performed by other researchers (8)(9)(10).…”

Section: Resultssupporting

confidence: 67%

Section: Resultsmentioning

confidence: 99%

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An evaluation of supercritical fluid extraction as an analytical tool to determine fat in canola, flax, solin, and mustard

Barthet¹,

Daun²

2002

J Americ Oil Chem Soc

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“…A supercritical fluid (SCF), with its readily adjustable density, low viscosity, and gas-like diffusivity, is an attractive solvent in the food, pharmaceutical, and cosmetic industries for the extraction of natural compounds, fine particle formation, and microencapsulation. − Supercritical carbon dioxide (SC-CO 2 ) is an environmentally friendly solvent with relatively low critical temperature (304.25 K) and moderate critical pressure (7.4 MPa). The low critical temperature of SC-CO 2 helps prevent heat-labile compounds from degradation during processing.…”

Section: Introductionmentioning

confidence: 99%

Measurement and Correlation of Citronellal and Methyl Anthranilate Solubilities in Supercritical Carbon Dioxide

Tsai

Rizvi

2015

J. Chem. Eng. Data

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Citronellal and methyl anthranilate (MA) are both nonpolar molecules with similar physical properties except for their molecular structures. The solubility of citronellal in supercritical carbon dioxide (SC-CO 2 ) was measured using a static equilibrium system in the pressure range of (9.1 to 14.2) MPa and at (313.15 and 333.15) K. For MA, (9.1 to 24.3) MPa was used at the same temperatures. Solubility data of citronellal and MA in SC-CO 2 were well correlated using the Chrastil equation and Peng−Robinson equation of state. Under comparable operating conditions, the linear-chained citronellal solubility in SC-CO 2 was three to four times higher than its aromatic derivative MA. The acentric factor of citronellal (ω = 1.004) is higher than that of MA (ω = 0.577), indicating that citronellal has larger molecular asymmetry. This difference allows less intermolecular binding energy but gives higher vapor pressure to citronellal, making it more readily soluble in SC-CO 2 . The results suggest that the acentric factor is a good indicator of molecular asymmetry of a solute and provides a preliminary estimate on solutes behavior in SC-CO 2 . Knowledge of the solubility behavior of such molecules in SC-CO 2 is a prerequisite for designing efficient industry-scale systems for their extraction and fractionation.

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An ecofriendly approach to process rice bran for high quality rice bran oil using supercritical carbon dioxide for nutraceutical applications

Balachandran

Mayamol

Thomas

et al. 2008

Bioresource Technology

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Supercritical carbon dioxide extraction of wheat plumule oil

Cited by 6 publications

References 8 publications

An evaluation of supercritical fluid extraction as an analytical tool to determine fat in canola, flax, solin, and mustard

An evaluation of supercritical fluid extraction as an analytical tool to determine fat in canola, flax, solin, and mustard

Measurement and Correlation of Citronellal and Methyl Anthranilate Solubilities in Supercritical Carbon Dioxide

An ecofriendly approach to process rice bran for high quality rice bran oil using supercritical carbon dioxide for nutraceutical applications

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