Effect of Solvent Polarity on the Efficiency of Ultrasound-Assisted Extraction of Polyphenols  From Apple Pomace

Kobus, Zbigniew; Wilczyński, Kamil; Nadulski, R.; Rydzak, L.; Guz, T.

doi:10.24326/fmpmsa.2017.29

Cited by 10 publications

(12 citation statements)

References 14 publications

(16 reference statements)

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“…The influence of the ultrasonic treatment parameters on unit energy consumption during the extraction of bioactive substances is relatively poorly described in the literature. Kobus et al [59] showed that an important factor determining the energy consumption during ultrasonic extraction is the appropriate selection of the solvent. Energy efficiency analysis has shown that using 60% ethanol allows obtaining the lowest unit energy input.…”

Section: Discussionmentioning

confidence: 99%

Process Efficiency and Energy Consumption during the Ultrasound-Assisted Extraction of Bioactive Substances from Hawthorn Berries

et al. 2021

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This study investigated the impact of sonication parameters on the efficiency of the extraction of bioactive substances from hawthorn berries. The ultrasonic treatment was performed in two modes: continuous and pulse. In the pulse mode, the samples were sonicated with the following processor settings: 1 s on-2 s off. The effective ultrasonic processor times were 5, 10, and 15 min, and the total extraction times were 15 min, 30 min, and 45 min. The content of total polyphenols and total anthocyanins was determined by a spectrophotometric method. We show that the operating mode of the processor affects extraction efficiency, energy consumption and unit energy inputs. Extraction supported by a pulsating ultrasonic field allowed saving from 20% to 51% of energy with a simultaneous higher efficiency of the process. In addition, we show that the unit energy consumption in the pulsed mode was about 40% to 68% lower than the energy consumption in the case of continuous operation.

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Section: Discussionmentioning

confidence: 99%

Process Efficiency and Energy Consumption during the Ultrasound-Assisted Extraction of Bioactive Substances from Hawthorn Berries

et al. 2021

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“…High-intensity and high-power active ultrasound techniques have the capacity to interact with raw material (matter) and can modify the course of physical or chemical processes. Ultrasound can be used to increase pressing efficacy [11], to support the process of extracting different components (herb extracts, polyphenols, aromatic compounds, polysaccharides) [12][13][14], and to improve the quality of obtained products [15]. Some authors have studied the potential of ultrasound for use in the preservation of fruit juice [16,17].…”

Section: Introductionmentioning

confidence: 99%

Effect of Extraction Method and Thermosonication on Apple Juice Quality

et al. 2019

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This paper presents the results of a study on the influence of juice extraction and thermosonication methods on the content of microorganisms in juices stored under refrigeration and in ambient temperature. It was determined that the type of extraction device used influenced the content of microorganisms in juice. The lowest total content of mesophilic microorganisms was obtained in juice extracted on a piston press, and the highest was obtained using a centrifuge. The additional purpose was to evaluate the influence of ultrasonic treatment on selected parameters of apple juice quality: cloud value, antioxidant activity, total phenolic content, flavonoid content, and anthocyanin content. The ultrasound treatment of juice from the piston press was conducted at two levels of radiated sonic power so as to obtain sublethal and lethal temperatures of the juice. It was demonstrated that only ultrasound treatment within the range of lethal temperatures was sufficient to deactivate microorganisms. It was determined that thermosonication did not influence the deterioration of chemical properties of juices, with the exception of decreased anthocyanin content. The described method enables prolongation of the shelf life of fresh apple juice under refrigeration to 168 hours (7 days).

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“…Because of its different molecular structure, ethanol is more effective at eluting compounds like chlorogenic acid and flavonoids [ 16 ]. Water is a more effective solvent due to its higher polarity coefficient [ 18 ]. As a result, combining water and ethanol yields a higher polyphenol extraction efficiency than using these solvents separately.…”

Section: Resultsmentioning

confidence: 99%

“…The first 20 min could be the washing stage during the extraction process, which means that the extraction process could recover up to 90% of the extract during this period. This is also the stage where the dissolution of the soluble components on the surface of the plant matrix takes place [ 17 , 18 ]. The second stage should follow which is called slow extraction which can take up to 60 min; however, it should be noted that the purpose of the process is to limit the sonication duration and also to reduce the energy cost of the process.…”

Section: Resultsmentioning

confidence: 99%

Ultrasonic Extraction of 2-Acetyl-1-Pyrroline (2AP) from Pandanus amaryllifolius Roxb. Using Ethanol as Solvent

et al. 2022

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2-acetyl-1-pyrroline (2AP) is the compound that gives out the typical aroma and flavour of pandan leaves (Pandanus amaryllifolius Roxb.). This research incorporates ultrasonic extraction to extract the aromatic compound in pandan leaves. The parameters varied in this study are the extraction time, sonicator amplitude, concentration of solvent and the mass of pandan leaves. The experiment was conducted using a central composite design (CCD) model generated by the response surface methodology (RSM). From the extraction process, it can be deduced that the effect of leaves’ mass is comparably higher than other parameters, while sonicator amplitude gives the most negligible impact on the process. The obtained p-value was 0.0014, which was less than 0.05. The high R-squared 0.9603 and adjusted R-squared 0.8809 indicate the model is well agreed with the actual data. The optimal control variables of ultrasonic extraction of 2AP are at an extraction time of 20 min, 60% of solvent concentration, amplitude of 25% and 12.5 g of pandan leaves, which produced 60.51% of yield of the extract and 1.43 ppm of 2AP. It is found that the mass of pandan leaves and the concentration of solvent have a significant impact on the extraction process of 2AP.

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Effect of Solvent Polarity on the Efficiency of Ultrasound-Assisted Extraction of Polyphenols From Apple Pomace

Cited by 10 publications

References 14 publications

Process Efficiency and Energy Consumption during the Ultrasound-Assisted Extraction of Bioactive Substances from Hawthorn Berries

Process Efficiency and Energy Consumption during the Ultrasound-Assisted Extraction of Bioactive Substances from Hawthorn Berries

Effect of Extraction Method and Thermosonication on Apple Juice Quality

Ultrasonic Extraction of 2-Acetyl-1-Pyrroline (2AP) from Pandanus amaryllifolius Roxb. Using Ethanol as Solvent

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