Optimisation of focused ultrasound extraction (FUSE) and microwave-assisted extraction (MAE) of hydrocarbons in geological chert samples

Olivares, Maitane; Vallejo, Asier; Irazola, Mireia; Murelaga, Xabier; Baceta, Juan Ignacio; Tarriño, Antonio; Etxebarria, Néstor

doi:10.1016/j.talanta.2010.10.004

Cited by 18 publications

(6 citation statements)

References 21 publications

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“…The yield of EDD extracted by UHD was higher than by SWD ( P < 0.01), while the yield of EDD isolated by SWD and HD were not significantly difference (Figure 1). Ultrasound-assisted hydrodistillation offered obviously higher yields of volatile oil from citrus peel than supercritical fluid extraction, 15 suggesting that ultrasonic assisted extraction is a good method to obtain Citrus essential oil. Herein, we studied the effect of ultrasound-assisted extraction on the yield and composition of EDD.…”

Section: Resultsmentioning

confidence: 99%

Alternative Extraction Methods of Essential Oil From the Flowers of Citrus aurantium L. Var Daidai Tanaka: Evaluation of Oil Quality and Sedative-Hypnotic Activity

Liang

Shang

Jin

et al. 2021

Natural Product Communications

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The aim of this study was to analyze the content of hypnotic components in the essential oil from Citrus aurantium flowers (EDD), extracted by different methods, and to characterize its sedative-hypnotic effects. The sedative-hypnotic capacity of EDD was evaluated using pentobarbital-induced sleeping assays, locomotor activity tests and GABAA receptor antagonists. The results showed that EDD extracted by steam and water distillation (SWD), hydrodistillation (HD), and ultrasound-assisted hydrodistillation (UHD) had as their main components linalool, linalyl acetate, and limonene, comprising more than 55% of the total peak area. Compared with EDD extracted by HD and UHD, the total content of linalool and linalyl acetate in EDD obtained by SWD was highest, whereas the content of limonene in EDD extracted by the 3 different methods was not different. Oral and intraperitoneal administration of EDD resulted in reduced sleep latency and increased sleep duration of mice, as well as reduced locomotor activity, which was proven by decreases in the total distance travelled, average velocity, number of activities, and central distance. Interestingly, intraperitoneal injection of EDD had better sedative and hypnotic effects than oral ingestion. In vitro assays using SH-SY5Y cells showed that EDD dose-dependently increased Cl− influx, which could be blocked by the GABAA receptor antagonists, picrotoxin, bicuculline, and flumazenil, suggesting that EDD promoted sedative-hypnotic activity by potentiating GABAA receptor-mediated Cl− current responses. Altogether, these results suggest that the important hypnotic-sedative activity of EDD appears to be due to the effects of limonene, and particularly the high contents of linalool and linalyl acetate, which were effectively extracted by SWD.

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Section: Resultsmentioning

confidence: 99%

Alternative Extraction Methods of Essential Oil From the Flowers of Citrus aurantium L. Var Daidai Tanaka: Evaluation of Oil Quality and Sedative-Hypnotic Activity

Liang

Shang

Jin

et al. 2021

Natural Product Communications

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“…As it has been mentioned before, several chromatographic variables can largely affect the resolution of the modulated peaks, the symmetry of the modulated peaks as well as the sensitivity of analytical method, making necessary the right choice of the chromatographic variables. To accomplish this work a standard mixture of hydrocarbons was used because the chromatographic outcomes were easy to treat compared to the results that would have been obtained from a real sample [26], though the final aim of this work is precisely to apply in unknown samples.…”

Section: Resultsmentioning

confidence: 99%

“…The procedure of organic matter extraction from chert samples has been already optimized and explained in a previous work [26]. Briefly, 10 subsamples of 2 g of chert were treated with 15 mL of extractant solvent mixture consisting of 60% dichloromethane (HPLC grade, 99.8%), 30% hexane (HPLC grade, 99.8%) and 10% acetone (HPLC grade, 99.8%).…”

Section: Sample Pre-treatmentmentioning

confidence: 99%

Comprehensive two-dimensional gas chromatography to characterize hydrocarbon mixtures in lithic materials

Olivares

Irazola

Vallejo

et al. 2011

Journal of Chromatography A

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“…In this latter ultrasonic performance, the ultrasound energy is focused in the tip of a probe, typically made of titanium and immersed directly in the solution of the sample to be sonicated. Hence, the use of focused ultrasound energy provides a short, reproducible and quantitative extraction from different matrices [26][27][28], including organic compounds as target analytes [26]. Nevertheless, the use of FUSLE for the extraction of organic compounds from beachrock samples has not still been reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

Focused ultrasound solid–liquid extraction for the determination of organic biomarkers in beachrocks

Blanco-Zubiaguirre

Arrieta

Iturregui

et al. 2015

Ultrasonics Sonochemistry

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Beachrocks are consolidated coastal sedimentary formations resulting mainly from the relative rapid cementation of beach sediments by different calcium carbonate polymorphs. Although previous works have already studied the elemental composition and the mineral phases composing these cements, few of them have focused their attention on the organic matter present therein. This work describes an extraction methodology based on focused ultrasound solid-liquid extraction (FUSLE), followed by analysis using large volume injection (LVI) in a programmable temperature vaporizer (PTV) combined with gas chromatography-mass spectrometry (GC-MS) in order to determine organics such as polycyclic aromatic hydrocarbons (PAHs) and biomarkers (hopanes), which can increase and confirm the information obtained so far. This goal has been achieved after the optimization of the main parameters affecting the extraction procedure, such as, extraction solvent, FUSLE variables (amplitude, extraction time and pulse time) and also variables affecting the LVI-PTV (vent time, injection speed and cryo-focusing temperature). The developed method rendered results comparable to traditional extraction methods in terms of accuracy (77-109%) and repeatability (RSD<23%). Finally, the analyses performed over real beachrock samples from the Bay of Biscay (Northern Spain) revealed the presence of the 16 EPA priority PAHs, as well as some organic biomarkers which could increase the knowledge about such beachrock formation.

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Optimisation of focused ultrasound extraction (FUSE) and microwave-assisted extraction (MAE) of hydrocarbons in geological chert samples

Cited by 18 publications

References 21 publications

Alternative Extraction Methods of Essential Oil From the Flowers of Citrus aurantium L. Var Daidai Tanaka: Evaluation of Oil Quality and Sedative-Hypnotic Activity

Alternative Extraction Methods of Essential Oil From the Flowers of Citrus aurantium L. Var Daidai Tanaka: Evaluation of Oil Quality and Sedative-Hypnotic Activity

Comprehensive two-dimensional gas chromatography to characterize hydrocarbon mixtures in lithic materials

Focused ultrasound solid–liquid extraction for the determination of organic biomarkers in beachrocks

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