Microwave-assisted hydrodistillation of essential oil from rosemary

Karakaya, Sibel; El, Sedef Nehir; Karagözlü, Nural; Şahin, Serpil; Şumnu, Gülüm; Bayramoglu, Beste

doi:10.1007/s13197-011-0610-y

Cited by 65 publications

(54 citation statements)

References 41 publications

(46 reference statements)

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“…The in‐situ MW assisted extraction (MWHD) of rosemary EO obtained a yield of 0.4 % (w/w) after an irradiation time of 30 min. This result is comparable with the yield and extraction time described in the literature which ranges from 0.3 % to 0.6 % (yield weight percentage) using a MW irradiation time from 10 to 75 min in conventional oven‐type reactors. Hydrodistillation (HD) using conventional heating was also performed as a reference method of essential oil extraction.…”

Section: Resultssupporting

confidence: 88%

See 1 more Smart Citation

Fast and Eco–friendly Microwave‐Assisted Synthesis of Silver Nanoparticles using Rosemary Essential Oil as Renewable Reducing Agent.

Duce

Ierardi²,

Longo

et al. 2017

ChemistrySelect

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A green and fast methodology was developed to synthesize silver nanoparticles using rosemary essential oil (EO) as a renewable reducing agent. The synthesis process was microwave (MW) assisted, using a coaxial dipole antenna immersed into the reaction medium. This configuration was used to promote both: i) rosemary EO extraction by hydrodistillation, and ii) silver nanoparticle synthesis in an aqueous solution at atmospheric pressure. The effect of two different silver salt substrates and the time reaction on the morphology of the silver nanoparticles was explored. The coaxial microwave‐assisted hydrodistillation of rosemary yields 0.4 % (w/w) in 30 min and contains ethers (17 %), ketones (50 %) and alcohols (15 %). Silver nanoparticles with a tuneable particle size (from 7 to 18 nm) and morphology (from spherical to round‐like shapes) were obtained in reaction times ranging from 2 to 30 min. The nanoparticle formation was followed by UV‐vis spectroscopy and SEM imaging.

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Section: Resultssupporting

confidence: 88%

“…The rosemary EO extraction process assisted by MW has been widely investigated using a Clevenger apparatus coupled to MW oven‐type devices . The MW extraction approach plays an important role in the yield, extraction time and chemical composition .…”

Section: Introductionmentioning

confidence: 99%

Fast and Eco–friendly Microwave‐Assisted Synthesis of Silver Nanoparticles using Rosemary Essential Oil as Renewable Reducing Agent.

Duce

Ierardi²,

Longo

et al. 2017

ChemistrySelect

View full text Add to dashboard Cite

show abstract

“…Similar to our findings, Tigrine‐Kordjani et al () reported that the time needed for achieving the same extraction yield with HD was 6 times greater than that of SFME (Tigrine‐Kordjani et al, ). Also, Karakaya et al () reported that MAHD can reduce the extraction time of Rosmarinus officinalis L. EO by approximately 65% in comparison with HD (Karakaya et al, ).…”

Section: Resultsmentioning

confidence: 99%

Enrichment of citral isomers in different microwave-assisted extraction of essential oil from fresh and dried lemon verbena (Aloysia citridora ) leaves

Golmakani

Farahmand

Ghassemi

et al. 2017

J Food Process Preserv

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Solvent‐free microwave extraction (SFME) and microwave‐assisted hydrodistillation (MAHD) were utilized for extraction of lemon verbena essential oil (EO) in comparison with the conventional hydrodistillation (HD). Chemical composition, extraction yield, physical properties, operation cost, antioxidant activity, and antifungal activities of extracted EOs were measured. Final yields of extraction and physical properties of extracted EOs did not show any significant difference among the three methods, but the required extraction time for extraction by microwave‐assisted extraction (MAE; i.e., MAHD and SFME) methods improved to a shorter time span. Even though the compounds in all three extraction techniques were exactly similar, extraction by MAE methods, especially the SFME, increased the quantity of oxygenated compounds such as citral isomers (geranial and neral) in comparison with HD. The obtained results showed that MAE methods, especially SFME, can selectively extract oxygenated compounds such as citral isomers and improve antioxidant and antifungal activities of the extracted EOs. Practical applications Oxygenated compounds like citral isomers are mostly effective in treating many health disorders. According to the results of this study, microwave extraction like MAHD and SFME result in the enrichment of citral isomers of EOs. This selective extraction can affect antioxidant and antifungal activities of EOs extracted by the microwave method in comparison with conventional methods like HD.

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“…The microwave oven was operated at 600 power level for a period of 30 min which no more essential oil was obtained. The extracted essential oils were collected, dehydrated with anhydrous sodium sulfate and kept in a sealed dark vials at 4 °C (Karakaya et al, 2014).…”

Section: Microwave-assisted Hydrodistillation (Mahd)mentioning

confidence: 99%

Chemical compositions and antioxidant activity of Heracleum persicum essential oil

Gharachorloo

Honarvar

Mardani

2018

Braz. J. Pharm. Sci.

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In this study essential oil of the aerial parts of Heracleum persicum a spice widely used in Iran was isolated by conventional hydrodistillation (HD) and microwave-assisted hydrodistillation (MAHD) techniques. The extraction yield was determined and the chemical compositions of essential oils were identified by the application of gas chromatography/mass spectrometry (GC/MS). The antioxidant activity was determined by two different methods: 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging and oven test methods. Although the main compounds of essential oils by the both extraction methods were similar, the essential oil extracted by HD with lower extraction efficiency showed more diverse compounds. The evaluation of antioxidant activity of the essential oil measured by delay in sunflower oil oxidation indicated that the antioxidant activity was dependent on the concentration which increased when higher concentrations of the essential oils were applied. The results of DPPH radical assay also indicated that the percentage of inhibition increased with increasing of essential oil concentration and IC 50 value for essential oil extracted by MAHD method was obtained 1.25 mg/mL. Therefore the Heracleum persicum essential oil might be recommended for use as a flavoring agent and a source of natural antioxidants in functional foods, formulation of the supplements and in medicinal due to numerous pharmacological activities.

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Microwave-assisted hydrodistillation of essential oil from rosemary

Cited by 65 publications

References 41 publications

Fast and Eco–friendly Microwave‐Assisted Synthesis of Silver Nanoparticles using Rosemary Essential Oil as Renewable Reducing Agent.

Fast and Eco–friendly Microwave‐Assisted Synthesis of Silver Nanoparticles using Rosemary Essential Oil as Renewable Reducing Agent.

Enrichment of citral isomers in different microwave-assisted extraction of essential oil from fresh and dried lemon verbena (Aloysia citridora ) leaves

Chemical compositions and antioxidant activity of Heracleum persicum essential oil

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