Hydrodistillation and <i>in situ</i> microwave‐generated hydrodistillation of fresh and dried mint leaves: a comparison study

Orio, Laura; Cravotto, Giancarlo; Binello, Arianna; Pignata, Giuseppe; Senesi, N.; Chémat, Farid

doi:10.1002/jsfa.5730

Cited by 42 publications

(33 citation statements)

References 30 publications

(29 reference statements)

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“…As previously reported, with our instrumentation the energies required for HD and MGH are 1.5 kWh and 0.25 kWh respectively, these figures correspond to a carbon footprint of 1200 and 200 g CO2 for HD and MGH, respectively [11,15]. As reported by Chemat et al [9] the energy required to perform an extraction with MHG is 0.2 kWh and the calculated quantity of carbon dioxide emitted is 160 g. In a recent paper we successfully experimented a 75 L-pilot MW reactor demonstrating the scaling up feasibility of MGH and MGH extractions [16].…”

Section: Cost Energy and Environmental Impactsupporting

confidence: 80%

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Effect of microwaves on the in situ hydrodistillation of four different Lamiaceae

Binello¹,

Orio²,

Pignata³

et al. 2014

Comptes Rendus. Chimie

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Original Citation:Effect of microwaves on the in situ hydrodistillation of four different Lamiaceae Terms of use:Open Access (Article begins on next page) Anyone can freely access the full text of works made available as "Open Access". Works made available under a Creative Commons license can be used according to the terms and conditions of said license. Use of all other works requires consent of the right holder (author or publisher) if not exempted from copyright protection by the applicable law. You may download, copy and otherwise use the AAM for non-commercial purposes provided that your license is limited by the following restrictions: Availability: This is the author's manuscript(1) You may use this AAM for non-commercial purposes only under the terms of the CC-BY-NC-ND license.(2) The integrity of the work and identification of the author, copyright owner, and publisher must be preserved in any copy. AbstractThe development of alternative techniques to classic hydrodistillation (HD) has been prompted because of the drawbacks of the more traditional technique. These drawbacks include: partial thermal degradation, high energy consumption and the fact that it is a time-consuming process. In situ microwave-generated hydrodistillation (MGH) and microwave hydrodiffusion and gravity (MHG) are suitable methods which may improve the preparation of essential oils. In this work, we report a comparison study of HD, MGH and MHG used in the extraction of four plant species cultivated in Piedmont (Italy): lavender, oregano, basil and sage. Both microwave-assisted procedures gave excellent results; in particular the essential oils obtained under MHG were very similar to those obtained with HD. In MGH, the polarity and the physico-chemical properties of the extracted compounds caused bigger differences in essential oil composition.

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Section: Cost Energy and Environmental Impactsupporting

confidence: 80%

“…Equipment and analysis conditions are as previously described [11]. All gas chromatographic mass spectra were recorded on an Agilent 6850 gas chromatograph ( 250°C injector temperature and helium as the carrier gas (1.2 mL min −1 flow).…”

Section: Analytical Apparatusmentioning

confidence: 99%

Effect of microwaves on the in situ hydrodistillation of four different Lamiaceae

Binello¹,

Orio²,

Pignata³

et al. 2014

Comptes Rendus. Chimie

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“…Conversely for SFME the predominant group is that of oxygenated compounds (40.8%) compared to HD (26.8%). Orio et al (2012) have linked this phenomenon to microwave energy effect which differs for oxygenated and non-oxygenated groups of compounds. For the more polar compounds (oxygenated compounds), the more easily the microwaves irradiations are absorbed, the better the interaction between electromagnetic wave and matter is established and more polar aromatic components are obtained, conversely to sesquiterpenes and monoterpenes hydrocarbons.…”

Section: Chemical Compositionmentioning

confidence: 99%

Valorization of industrial wastes from French maritime pine bark by solvent free microwave extraction of volatiles

Mellouk

Meullemiestre

Maache-Rezzoug

et al. 2016

Journal of Cleaner Production

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a b s t r a c tSolvent Free Microwave Extraction (SFME) of oil from French maritime pine bark waste and its antioxidant activity were investigated and compared to classical hydrodistillation (HD) method (Clevenger apparatus). A central composite design combined with response surface methodology was applied to evaluate the simultaneous influences of irradiation power and irradiation time. A maximal extraction yield of 3.48% (g/100 g dry bark) was achieved under optimal extraction time of 92.4 min and an irradiation power of 803.5 W compared 2.2% obtained for the conventional method (HD). Gas chromatography coupled to mass spectrometry (GCeMS) analysis showed that SFME extract is richer in oxygenated compounds (~40%) compared to HD extract with 26%. The results also showed that the two independent variables had a statistical significant effect on the considered responses namely oil yield, total phenolic compounds (TPC) and antioxidant activity assessed by 2,2-diphenyl-1-picrylhdrazyl (DPPH). Under optimized conditions, the amount of TPC was 139.15 mg GAE/g extract largely higher than that obtained for HD extraction (14.28 15 mg GAE/g extract) suggesting that SFME represents an interesting alternative technology for production of recoverable oil from waste of French Maritime pine bark. The percentage inhibition was also higher for SFME extraction technique (71.91%) than for HD (56.51%) indicating a higher antioxidant activity.

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“…They have the advantages of being less time and energy consuming than hydro-distillation, the traditional procedure used for the industrial extraction of EOs. Additionally, they do not require re-distillation to obtain the pure product and avoid the problems of compound thermal degradation (Orio et al, 2012). The techniques include supercritical fluid extraction, ultrasound-assisted extraction and microwaveassisted extraction.…”

Section: Washing Sanitation Systems and Processing Aidsmentioning

confidence: 99%

Fresh-Cut Produce Quality

Senesi

Fontana²

2014

Postharvest Handling

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Hydrodistillation and in situ microwave‐generated hydrodistillation of fresh and dried mint leaves: a comparison study

Abstract: The yields and composition percentages of the EO obtained by HD and in situ MGH of fresh and dried mint leaves lie in a relatively narrow range, although MGH is faster. MW polarization effects and the water solubility of the components influence extract composition.

Cited by 42 publications

References 30 publications

Effect of microwaves on the in situ hydrodistillation of four different Lamiaceae

Effect of microwaves on the in situ hydrodistillation of four different Lamiaceae

Valorization of industrial wastes from French maritime pine bark by solvent free microwave extraction of volatiles

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