Solubility of virgin coconut oil in supercritical carbon dioxide

Zuknik, Mark Harris; Norulaini, N.A. Nik; Dalila, W.S. Wan Nursyazreen; Ali, Nur Raihan; Omar, A.K. Mohd

doi:10.1016/j.jfoodeng.2015.08.004

Cited by 51 publications

(19 citation statements)

References 28 publications

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“…However, a high pressure (35 MPa) produced by SC-CO 2 could limit the application because of the high cost at production scale, and the 17.34% oil yield indicated the low processing capacity. Though CO 2 is the most utilized solvent, n -butane can be a good choice because its critical pressure is relatively lower than that of CO 2 , leading to a better interaction with the non-polar substances [ 37 ]. In addition, n -butane is easily accepted, cheaper and has a higher dissolving capacity compared to CO 2 , thus decreasing the n -butane consumption, increasing efficiency and shortening extraction time [ 23 , 28 ].…”

Section: Resultsmentioning

confidence: 99%

Subcritical Fluid Extraction of Chinese Quince Seed: Optimization and Product Characterization

Wang

Liu

et al. 2017

Molecules

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Chinese quince seed (CQS) is an underutilized oil source and a potential source of unsaturated fatty acids and α-tocopherol-rich oil. Subcritical fluid (SCF) extraction is executed at lower pressures and temperatures than the pressures and temperatures used in supercritical fluid extraction. However, no studies on the SCF extraction of CQS oil are reported. Therefore, the objective of this study was to evaluate the use of SCF for the extraction of CQS oil and to compare the use of SCF with the classical Soxhlet (CS) and supercritical CO2 (SC-CO2) extraction methods. Response surface methodology (RSM) was used to investigate the extraction conditions: temperature (45–65 °C), time (30–50 min), and solvent/solid ratio (5–15 mL/g). The optimization results showed that the highest yield (27.78%) was obtained at 56.18 °C, 40.20 min, and 12.57 mL/g. The oil extracted by SCF had a higher unsaturated fatty acid content (86.37%–86.75%), higher α-tocopherol content (576.0–847.6 mg/kg), lower acid value (3.97 mg/g), and lower peroxide value (0.02 meq O2/kg) than extractions using CS and SC-CO2 methods. The SCF-defatted meal of oilseed exhibited the highest nitrogen solubility index (49.64%) and protein dispersibility index (50.80%), demonstrating that SCF extraction was a promising and efficient technique as an alternative to CS and SC-CO2 methods, as very mild operating conditions and an eco-friendly solvent can be used in the process with maximum preservation of the quality of the meal.

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Section: Resultsmentioning

confidence: 99%

Subcritical Fluid Extraction of Chinese Quince Seed: Optimization and Product Characterization

Wang

Liu

et al. 2017

Molecules

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“…Ghosh et al showed that the recovery of eugenol from Ocimum sanctum was decreased significantly by amplifying temperature at lower pressure and vice versa, and the upper cross-over pressure was noted at 200 bar [ 60 ]. Other examples where extract yield and SCF density effects have been noted are for γ-oryzanol with a cross-over effect at 300 bar [ 97 ], 350–375 bar for avocado oil [ 61 ], as well as 295 bar for coconut oil [ 98 ].…”

Section: Operating Parametersmentioning

confidence: 99%

Solvent Supercritical Fluid Technologies to Extract Bioactive Compounds from Natural Sources: A Review

et al. 2017

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Supercritical fluid technologies offer a propitious method for drug discovery from natural sources. Such methods require relatively short processing times, produce extracts with little or no organic co-solvent, and are able to extract bioactive molecules whilst minimising degradation. Supercritical fluid extraction (SFE) provides a range of benefits, as well as offering routes to overcome some of the limitations that exist with the conventional methods of extraction. Unfortunately, SFE-based methods are not without their own shortcomings; two major ones being: (1) the high establishment cost; and (2) the selective solvent nature of CO2, i.e., that CO2 only dissolves small non-polar molecules, although this can be viewed as a positive outcome provided bioactive molecules are extracted during solvent-based SFE. This review provides an update of SFE methods for natural products and outlines the main operating parameters for extract recovery. Selected processing considerations are presented regarding supercritical fluids and the development and application of ultrasonic-assisted SFE methods, as well as providing some of the key aspects of SFE scalability.

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“…However, Zuknik et al. (2016) found the contradictive results that the Chrastil model has a higher error compared to the DVa model in the solubility of virgin coconut oil at pressures between 31.0 and 34.5 MPa (0.93 > 0.39). This is due to more adjustable parameters gives the small error between the model data and experimental data.…”

Section: Resultsmentioning

confidence: 99%

“…Duba et al (2016) also stated that the Chrastil model also successfully correlated the solubility of grape seed oil with a low error below than 1% compared to the Adachi-Lu model, where the TA B L E 3 Experimental and calculated solubility of TPC and TFC in mixture solvents (ScCO 2 and ethanol) from peanut skin temperature effect is dominant to increase the solubility. However, Zuknik et al (2016) found the contradictive results that the Chrastil model has a higher error compared to the DVa model in the solubility of virgin coconut oil at pressures between 31.0 and 34.5 MPa (0.93 > 0.39). This is due to more adjustable parameters gives the small error between the model data and experimental data.…”

Section: Ta B L Ementioning

confidence: 95%

“…Commonly, the models can be categorized to semi-empirical models, equation-of-state-based, and kinetic correlations. However, semi-empirical models are frequently employed due to their relative ease of application and the lack of requirement for physicochemical properties such as critical properties, sublimation pressure, and acentric factor (Zuknik, Nik Norulaini, Wan Nursyazreen Dalila, Ali, & Omar, 2016).…”

Section: Practical Applicationsmentioning

confidence: 99%

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Recovery and solubility of flavonoid and phenolic contents from Arachis Hypogea in supercritical carbon dioxide assisted by ethanol as cosolvent

Putra

Rizkiyah

Machmudah

et al. 2020

J. Food Process. Preserv.

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Peanut (Arachis Hypohea) skin as a by-product is peeled out due to reducing the quality of peanut butter. Peanut skin contains flavonoid and phenolic compounds that they retard oxidative degradation of lipids and thereby improve the quality and nutritional value of food. Peanut skin extract commonly can be anti-allergenic, antiviral, anti-inflammatory, anticarcinogenic activities, and also prevention of

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Solubility of virgin coconut oil in supercritical carbon dioxide

Cited by 51 publications

References 28 publications

Subcritical Fluid Extraction of Chinese Quince Seed: Optimization and Product Characterization

Subcritical Fluid Extraction of Chinese Quince Seed: Optimization and Product Characterization

Solvent Supercritical Fluid Technologies to Extract Bioactive Compounds from Natural Sources: A Review

Recovery and solubility of flavonoid and phenolic contents from Arachis Hypogea in supercritical carbon dioxide assisted by ethanol as cosolvent

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