Microwave-assisted extraction of O. vulgare L. spp. hirtum essential oil: Comparison with conventional hydro-distillation

Drinić, Zorica; Pljevljakušić, Dejan; Živković, Jelena; Bigović, Dubravka; Šavikin, Katarina

doi:10.1016/j.fbp.2020.01.011

Cited by 74 publications

(31 citation statements)

References 35 publications

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“…An increase in viscosity or surface tension causes an improvement in the cohesive forces between the solvent molecules and thus a significant increase in the cavitation threshold. A solvent with low vapor pressure is generally preferred due to the effective collapse of cavitation bubbles comparing to solvents with high vapor pressure [ 19 ]. Theoretically, any fluid can be used as a solvent in supercritical state, but the desirable properties of these solvents should be low toxicity, cost, and high solvent selectivity towards target molecules.…”

Section: Resultsmentioning

confidence: 99%

“…Electrical consumption and CO 2 emission were calculated to provide insights about environmental impact. The electrical consumption ( A ) of HD and MWHD were calculated as the electrical power for a time, using the following equation [ 19 ]:

where A is electrical consumption (kWh), P is electrical power (kW), and t is time (h).…”

Section: Methodsmentioning

confidence: 99%

“…Extraction yield (Y E ) for different extraction techniques and solvents is depicted in Figure 3. [19]. Theoretically, any fluid can be used as a solvent in supercritical state, but the desirable properties of these solvents should be low toxicity, cost, and high solvent selectivity towards target molecules.…”

Section: Separation Of Lipid Extractmentioning

confidence: 99%

See 2 more Smart Citations

Extraction of Peppermint Essential Oils and Lipophilic Compounds: Assessment of Process Kinetics and Environmental Impacts with Multiple Techniques

et al. 2021

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Consumers are becoming more mindful of their well-being. Increasing awareness of the many beneficial properties of peppermint essential oil (EO) has significantly increased product sales in recent years. Hydrodistillation (HD), a proven conventional method, and a possible alternative in the form of microwave-assisted hydrodistillation (MWHD) have been used to isolate peppermint EO. Standard Soxhlet and alternatively supercritical fluid (SFE), microwave-assisted, and ultrasound-assisted extraction separated the lipid extracts. The distillations employed various power settings, and the EO yield varied from 0.15 to 0.80%. The estimated environmental impact in terms of electricity consumption and CO2 emissions suggested that MWHD is an energy efficient way to reduce CO2 emissions. Different extraction methods and solvent properties affected the lipid extract yield, which ranged from 2.55 to 5.36%. According to the corresponding values of statistical parameters, empiric mathematical models were successfully applied to model the kinetics of MWHD and SFE processes.

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Section: Resultsmentioning

confidence: 99%

where A is electrical consumption (kWh), P is electrical power (kW), and t is time (h).…”

Section: Methodsmentioning

confidence: 99%

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Extraction of Peppermint Essential Oils and Lipophilic Compounds: Assessment of Process Kinetics and Environmental Impacts with Multiple Techniques

et al. 2021

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“…Microwave-assisted hydro-distillation (MAHD) was used for the extraction of essential oil from O. vulgare L. ssp. Hirtum [ 7 ]. MAHD proved to be a technique with many advantages compared to conventional hydro-distillation, such as a shorter extraction time, better yields of essential oil, higher content of oxygenated compounds, and lower electrical consumption figures.…”

Section: Introductionmentioning

confidence: 99%

Permittivity Measurements for Cypress and Rockrose Biomass Versus Temperature, Density, and Moisture Content

Pérez-Campos

Fayos-Fernández

Guerrero

et al. 2020

Sensors

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Permittivity of materials is of utmost importance for microwave applicators’ design and to predict high-frequency dielectric heating of materials. In the case of aromatic plant biomass, however, there are few data that help researchers design microwave applicators for microwave-assisted extraction. In this work, the permittivity of cypress and rockrose biomass samples were measured versus temperature, density, and moisture content. A resonant technique based on a coaxial bi-reentrant microwave cavity was employed to obtain the complex permittivity of biomass samples as a function of those magnitudes around the 2.45 GHz ISM frequency. The obtained measurements show that large variations for permittivity values can be found with moisture content and density changes for both cypress and rockrose biomass. Temperature also has effects in a lesser degree, although it has an important influence on the cypress biomass loss factor. Polynomial expressions fitting the experimental data were provided in order to facilitate the estimation of intermediate values, which were not explicitly arranged in this work. As a general trend, the permittivity of cypress and rockrose biomass increases with increasing values of moisture content and density, whereas the biomass loss factor increases when temperature rises.

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“…Supercritical uid which utilizes carbon dioxide or solvents particularly in its critical condition to disrupt seed cell walls releasing oil to the environment, and mechanical disruption i.e. screw press which applies a non-inherent force to the seeds are the common green extraction process (Drinić et al 2020). Even though a high purity of oil yield is extracted using the supercritical extraction method, a special reactor that can hold a high pressure is required for successful extraction, which, together with operating costs such as electricity, a specialized operator and periodic maintenance, limits its industrial application (de Jesus and Filho 2020).…”

Section: Introductionmentioning

confidence: 99%

Green Solvent Improving Mechanical Disruption of Palm Kernel Oil Extraction

Sitepu¹,

Chandra²,

Zaidar³

et al. 2020

Preprint

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Even though the mechanical extraction process offers a simple and environmentally friendly process, the recovery of oil is relatively low. Thermal pre-treating the oilseed increases the oil yield but produces unwanted oil colour. A new method which combines grinding and extraction using green solvents was developed to extract palm kernel oil. The performance of six different green solvents such as water, ethanol, isopropyl alcohol, dimethyl carbonate, ethyl acetate, and d-limonene in extraction palm kernel oil was determined using a controllable blender extractor (CBE), new extraction equipment modified from a household blender appliance. Further, ethyl acetate, which produced the maximum oil yield, was used to study the effect of the operating parameters of the CBE. The oil yield of 34.2 ± 0.02% was obtained in the extraction condition of the ratio of palm kernel to ethyl acetate of 1:7, rotational speed of 5000 rpm and 10 minutes extraction time. Compared to other green extraction methods, the CBE-intensified palm kernel oil extraction could save >70% energy consumption. In terms of extraction time, the CBE-intensified could extract palm kernel oil faster than existing extraction methods.

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Microwave-assisted extraction of O. vulgare L. spp. hirtum essential oil: Comparison with conventional hydro-distillation

Cited by 74 publications

References 35 publications

Extraction of Peppermint Essential Oils and Lipophilic Compounds: Assessment of Process Kinetics and Environmental Impacts with Multiple Techniques

Extraction of Peppermint Essential Oils and Lipophilic Compounds: Assessment of Process Kinetics and Environmental Impacts with Multiple Techniques

Permittivity Measurements for Cypress and Rockrose Biomass Versus Temperature, Density, and Moisture Content

Green Solvent Improving Mechanical Disruption of Palm Kernel Oil Extraction

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