Supercritical extraction of essential oil from Juniperus communis L. needles: Application of response surface methodology

Larkeche, O.; Ahmed, Zaheer; Meniai, Abdeslam Hassen; Crampon, Christelle; Badens, Elisabeth

doi:10.1016/j.supflu.2015.01.026

Cited by 33 publications

(15 citation statements)

References 27 publications

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“…In the first period (0–30 min), free oil from particle surfaces is easily extracted by SC–CO 2 at a fast, constant rate determined by external mass transfer of solvent and solubility of the solute in SC–CO 2 . In the second period, extraction rate decreases to a minimum and the curve approaches asymptotically to the final oil yield due to depletion of superficial oil and transition to internal mass transfer processes, namely diffusion . Periods one and two are linked by an intermediate phase where the rate decreases steadily due to the shift of depletion level from bottom to top of solid bed .…”

Section: Resultsmentioning

confidence: 99%

“…Figure presents the extraction kinetic observed during SC–CO 2 extraction of TML coarse meal at different process conditions. Analogous to the extraction kinetics of a wide range of natural matter , for TML coarse meal (excluding extractions at 250 bar) two extraction phases can be distinguished which are governed by different mass transfer mechanisms. In the first period (0–30 min), free oil from particle surfaces is easily extracted by SC–CO 2 at a fast, constant rate determined by external mass transfer of solvent and solubility of the solute in SC–CO 2 .…”

Section: Resultsmentioning

confidence: 99%

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Pilot‐scale supercritical CO₂ extraction of edible insect oil from Tenebrio molitor L. larvae – Influence of extraction conditions on kinetics, defatting performance and compositional properties

Purschke¹,

Stegmann

Schreiner³

et al. 2016

Euro J Lipid Sci & Tech

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In view of industrial fractionation processes for edible insects, supercritical CO2 extraction of Tenebrio molitor larval oil was studied. The influence of extraction parameters on defatting of larvae was investigated using a full factorial design. Furthermore, the effect of operating conditions on extraction kinetics, fatty acid composition, and acidity of mealworm oil was evaluated. Pressure, time, and their interaction showed the most significant effects on defatting. Maximal defatting (95%) was achieved at 400/250 bar, 45°C, and 105 min. Extraction kinetics revealed that incrementing pressure increased the solubility of mealworm oil in SC–CO2 enabling faster extraction. Extracted oils contained 72% unsaturated fatty acids, and oleic acid accounted for 42% of total FAME. Oil composition and acidity were found to be affected by extraction parameters showing the highest amount of low molecular and free fatty acids after slow extraction at 250 bar and 65°C. Use of selective extraction conditions enabled simple time‐dependent fractionation and deacidification yielding fractions with tailored fatty acid profiles or facilitating subsequent refining processes, respectively. Defatting performance and oil composition were not substantially different when using hexane as a solvent in comparison to SC–CO2. Mealworm larvae can be effectively defatted using SC–CO2 at high pressure and moderate temperature, yielding two valuable fractions: oil‐ and protein‐rich residue. Practical applications: Mealworm larvae are promising candidates for the inclusion of edible insects in the western food and feed industry due to modest breeding demands, existing rearing knowledge, and high contents of protein and fat. The development of fractionation processes for the production of standardized insect bulk materials and incorporation in feed or food in analogy to soy and other plant raw materials rich in fat and protein will help gain industrial applicability and enhance consumer acceptance. Depending on the processing approach, a defatting step is crucial prior to protein extraction. The results of this study indicate that SC–CO2 extraction is suitable for achieving a high yield of solvent‐free oil and a protein‐enriched, solvent‐free residue at low extraction temperatures. Both fractions can be further refined and purified in order to achieve valuable intermediates for food and feed applications. The SC–CO2 extraction of mealworms yielded highly unsaturated oil and a defatted residue containing protein and chitin. The operating parameters clearly affected the defatting performance and the extraction rate.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Pilot‐scale supercritical CO₂ extraction of edible insect oil from Tenebrio molitor L. larvae – Influence of extraction conditions on kinetics, defatting performance and compositional properties

Purschke¹,

Stegmann

Schreiner³

et al. 2016

Euro J Lipid Sci & Tech

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“…Among the gases used as solvents in this technique, supercritical carbon dioxide (CO 2 ) stands out because it is non‐toxic, relatively inert, non‐flammable, inexpensive, and readily available, besides being GRAS (generally recognized as safe) . It also presents moderate critical properties (304 K and 7.38 MPa).…”

Section: Introductionmentioning

confidence: 99%

Extraction of macauba kernel oil using supercritical carbon dioxide and compressed propane

et al. 2018

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Macauba kernel oil (MKO) was extracted using supercritical CO 2 and compressed propane as the solvent. The influence of temperature (313-353 K for CO 2 and 303-333 K for propane) and pressure (18-22 MPa for CO 2 and 8-12 MPa for propane) on oil yield was investigated, and the results were compared with conventional extraction. A characterization of oil and defatted meal was performed. Temperature and pressure, in the evaluated range, influenced oil yield with the use of CO 2 . For propane, the oil yield was not influenced by the experimental conditions. In the evaluated experimental range, the use of propane and CO 2 provided 100 % and $93 % oil yield compared to conventional extraction, respectively. MKO showed a predominance of saturated fatty acids, among which lauric acid was the major constituent. CO 2 presented greater efficiency in the removal of phytosteroids and tocopherols from the macauba kernel, however, the oil extracted with propane presented longer oxidative stability. Defatted meals presented modified physico-chemical composition and potentiated technological characteristics due to oil removal. Solvent density; ÃÃ average value of three replicate runs AE standard deviation. Means followed by the same letters indicates no significant difference (p > 0.05).

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“…Juniperus rigida is an evergreen shrub or dungarunga species of the genus Juniperus of the family Cupressaceae. This plant often grows in dry uncultivated regions of Korea, Japan, and Russia's Far East . In P. R. China, J. rigida is mainly distributed in Heilongjiang, Jilin, Liaoning, Hebei, Shaanxi, and Gansu provinces, Ningxia and Nei Monggol Autonomous Region .…”

Section: Introductionmentioning

confidence: 99%

Chemical Composition and Antioxidant Activity of Essential Oils and Methanol Extracts of Different Parts from Juniperus rigida Siebold & Zucc.

Liu

Wang

et al. 2016

Chemistry & Biodiversity

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The chemical composition and antioxidant activity of essential oils and MeOH extracts of stems, needles, and berries from Juniperus rigida were studied. The results indicated that the yield of essential oil from stems (2.5%) was higher than from needles (0.8%) and berries (1.0%). The gas chromatography/mass spectrometer (GC/MS) analysis indicated that 21, 17, and 14 compounds were identified from stems, needles, and berries essential oils, respectively. Caryophyllene, α-caryophyllene, and caryophyllene oxide were primary compounds in both stems and needles essential oils. However, α-pinene and β-myrcene mainly existed in berries essential oils and α-ionone only in needles essential oils. The high-performance liquid chromatography (HPLC) analysis indicated that the phenolic profiles of three parts exhibited significant differences. Needles extracts had the highest content of chlorogenic acid, catechin, podophyllotoxin, and amentoflavone, and for berries extracts, the content of those compounds was the lowest. Meanwhile, three in vitro methods (DPPH, ABTS, and FRAP) were used to evaluate antioxidant activity. Stems essential oil and needles extracts exhibited the powerful antioxidant activity than other parts. This is the first comprehensive study on the different parts of J. rigida. The results suggested that stems and needles of J. rigida are useful supplements for healthy products as new resources.

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Supercritical extraction of essential oil from Juniperus communis L. needles: Application of response surface methodology

Cited by 33 publications

References 27 publications

Pilot‐scale supercritical CO₂ extraction of edible insect oil from Tenebrio molitor L. larvae – Influence of extraction conditions on kinetics, defatting performance and compositional properties

Pilot‐scale supercritical CO₂ extraction of edible insect oil from Tenebrio molitor L. larvae – Influence of extraction conditions on kinetics, defatting performance and compositional properties

Extraction of macauba kernel oil using supercritical carbon dioxide and compressed propane

Chemical Composition and Antioxidant Activity of Essential Oils and Methanol Extracts of Different Parts from Juniperus rigida Siebold & Zucc.

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Supercritical extraction of essential oil from Juniperus communis L. needles: Application of response surface methodology

Cited by 33 publications

References 27 publications

Pilot‐scale supercritical CO2 extraction of edible insect oil from Tenebrio molitor L. larvae – Influence of extraction conditions on kinetics, defatting performance and compositional properties

Pilot‐scale supercritical CO2 extraction of edible insect oil from Tenebrio molitor L. larvae – Influence of extraction conditions on kinetics, defatting performance and compositional properties

Extraction of macauba kernel oil using supercritical carbon dioxide and compressed propane

Chemical Composition and Antioxidant Activity of Essential Oils and Methanol Extracts of Different Parts from Juniperus rigida Siebold & Zucc.

Contact Info

Product

Resources

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Pilot‐scale supercritical CO₂ extraction of edible insect oil from Tenebrio molitor L. larvae – Influence of extraction conditions on kinetics, defatting performance and compositional properties

Pilot‐scale supercritical CO₂ extraction of edible insect oil from Tenebrio molitor L. larvae – Influence of extraction conditions on kinetics, defatting performance and compositional properties