Ultrasound-assisted solid liquid extraction (USLE) of olive fruit (Olea europaea) phenolic compounds

Jerman, Tina; Trebše, Polonca; Vodopivec, Branka Mozetič

doi:10.1016/j.foodchem.2010.04.006

Cited by 164 publications

(125 citation statements)

References 27 publications

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“…It has been observed that the lycopene yield increased with time till 20 min, later did not change significantly with time. Similar results were given in the literature; in ultrasonic extraction of phenolic compounds, time was found to be the most important factor (Wang and Weller 2006;Jerman et al 2010). Although prolonged extraction time from 10 to 20 min improved the yield, after 30 min no more benefit could be observed because 95 % of phenolics could be already extracted up to 20-25 min extraction (Jerman et al 2010;Ma et al 2009).…”

Section: Conventional Organic Solvent Extraction (Cose)supporting

confidence: 87%

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Ultrasound assisted extraction of lycopene from tomato processing wastes

2013

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Tomato paste processing wastes, an important byproduct of the paste industry, is rich in potentially healthpromoting compounds such as lycopene. In this study, extraction yield of lycopene from tomato paste processing wastes by application of ultrasound assisted extraction (UAE) was compared with conventional organic solvent extraction (COSE) method. BHT (butylated hydroxytoluene) 0.05 % (w/v) added hexane:acetone:ethanol (2:1:1) mixture was used as solvent. Three different solvent solid ratios; 50:1, 35:1 and 20:1, (v/w) were used in both COSE and UAE. COSE experiments were performed at 20°C, 40°C and 60°C for 10, 20, 30 and 40 min. 50, 65 and 90 W of ultrasonic power were applied in UAE for 1, 2, 5, 10, 15, 20 and 30 min. Lycopene contents of the samples were determined by spectrophotometric method. The effects of different factors, including the temperature, solvent solid ratio and ultrasonic power on lycopene yield were investigated. It was determined that the most efficient application for COSE was extracting samples by 50:1 solvent solid ratio at 60°C for 40 min run, for UAE, 35:1 (v/w) solvent solid ratio, 90 W ultrasonic power for 30 min run. It was showed that UAE of lycopene requires less time, lower temperature and lower solvent than COSE.

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Section: Conventional Organic Solvent Extraction (Cose)supporting

confidence: 87%

“…Sound waves at frequencies greater than human hearing range can alter the materials both in physical and chemical ways applying sponge effect and cavitations (Wang et al 2008;Jerman et al 2010;Mason and Lorimer 2002). These effects enhance solvent penetration in solid and cease the release of extracts by destroying solid matrix.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound assisted extraction of lycopene from tomato processing wastes

2013

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“…In addition, the accelerated evaporation would also be induced at high temperatures, which led to the decrease of driving force [42]. The yield affected by temperature with the same pattern in a UAE process were previously reported, such as phenols from olive fruit [11], oil from pomegranate seed [42], and carotene from citrus peels [43]. Thus, an extraction temperature range from 40 to 60 °C was chosen in RSM process of ATL.…”

Section: Extraction Temperaturementioning

confidence: 68%

“…Comparing to other conventional methods, UAE offers a net advantage in terms of productivity and selectivity with shorter processing time, enhanced quality, reduced chemical and physical hazards, and it is environmentally friendly and causes less damage to the structural and molecular properties of compounds in plant materials [9,10]. For these reasons, UAE from plant materials has been widely used lately to facilitate extractions of phenols from Chrysanthemum morifolium flower head [10], Olea europaea fruit [11], Morus nigra must [12], and Curcuma longa rhizome [13], lipids from rice [14], polysaccharides from pumpkin [15] and mycelial fermentation of Phellinus igniarius [16], proteins from Jatropha curcas seed [17], lignans from Schisandra chinensis fruit [18] and other value-added compounds from various natural resources. However, to the best of our knowledge, no effort is available regarding improvements of phenolic yield by itself, let alone the phenolic yield together with antioxidant activity from ATL by ultrasonic stimulation.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Ultrasonic-Assisted Extraction by Response Surface Methodology with Maximal Phenolic Yield and Antioxidant Activity from <em>Acer truncatum</em> Leaves

Yang

Yin

Fan

et al. 2017

Preprint

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This study was designed for the first time to improve phenolic yield and antioxidant activity of ultrasonic-assisted extraction from Acer truncatum leaves (ATL) using response surface methodology, and phenolic composition in ATL extracted under the optimized condition were characterized by UPLC-QTOF-MS/MS. Solvent and extraction time were selected based on preliminary experiments, and a four-factors-three-levels central composite design was conducted to optimize solvent concentration (X1), material-to-liquid ratio (X2), ultrasonic temperature (X3) and power (X4) for an optimal total phenol yield (Y1) and DPPH• antioxidant activity (Y2). The results showed that the optimal combination was ethanol: water (v:v) 66.21%, material-to-liquid ratio 1:15.31 g/mL, ultrasonic temperature 60 °C, power 267.30 W, and time 30 min with three extractions, giving a maximal total phenol yield of 7593.62 mg gallic acid equivalent /100 g d.w. and a maximal DPPH• antioxidant activity of 74241.61 μmol Trolox equivalent/100 g d.w.. Furthermore, 22 phenolics were first identified in ATL extract obtained under the optimized conditions, indicating that gallates, gallotannins, quercetin, myricetin and chlorogenic acid derivatives were the main phenolic composition in ATL. What's more, a gallotannins pathway existing in ATL from gallic acid to penta-O-galloyl-glucoside was interpreted. All these results provided practical information aiming at full utilization of phenolics in ATL, together with fundamental knowledge for further research.

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“…Several authors studied the application of ultrasound in food (Jimé nez et al, 2006) and its effects on oils Cañizares-Mací as et al, 2004;Sharma & Gupta, 2006;Benedito et al, 2007;Zhang et al, 2008;Jerman et al, 2010;Izbaima et al, 2010;Riera et al, 2010;Li et al, 2004;Liu et al, 2011;Jerman & Mozetic, 2012;Da Porto et al, 2013;Goula, 2013;Tian et al, 2013;Rodrí guez et al, 2013;Reboredo-Rodrí guez, 2014;Samarama et al, 2014).…”

Section: Introduce the Problemmentioning

confidence: 99%

Improvement in the Extraction of Hass Avocado Virgin Oil by Ultrasound Application

Segura¹,

Amarillo²,

Martínez³

et al. 2018

JFR

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The virgin oil extraction from avocado Hass was carried using an Abencor pilot scale plant.High-power ultrasound (1.73 MHz) was applied after mixing. High-frequency ultrasound device consists of two transductors which each deliver 30 W/L. Different proportions of water were added before ultrasound treatment (no water added and paste:water relation (1:3, 1:2, 1:1, 2:1, 3:1) and also different ultrasound application times (0, 1, 2, 3, 4, 5, 10, 15, 20 and 25 minutes). The study was carried out by setting one of the two variables considered and changing the values of the other. In the water addition study, ultrasound time was set at 15 min.It was found that oil recovery increased with the percentage of water added. It was decided to employ a ratio of 1:1 to study the influence of ultrasound application time. Under these conditions, it was found that with 1 minute of ultrasound application, recovery increased by 40 % over the process without ultrasound.It was observed that the composition in fatty acids and the content of natural antioxidants (tocopherols and polyphenols) are not affected by the ultrasound application.It is concluded that the application of high-frequency ultrasound with addition of water post malaxing improves recovery of virgin avocado oil without negative effects on the general quality of the oil.

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Ultrasound-assisted solid liquid extraction (USLE) of olive fruit (Olea europaea) phenolic compounds

Cited by 164 publications

References 27 publications

Ultrasound assisted extraction of lycopene from tomato processing wastes

Ultrasound assisted extraction of lycopene from tomato processing wastes

Optimization of Ultrasonic-Assisted Extraction by Response Surface Methodology with Maximal Phenolic Yield and Antioxidant Activity from <em>Acer truncatum</em> Leaves

Improvement in the Extraction of Hass Avocado Virgin Oil by Ultrasound Application

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