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

Zbigniew Kobus, Monika Krzywicka, Anna Pecyna and Agnieszka Buczaj
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Zbigniew Kobus: Department of Technology Fundamentals, University of Life Sciences, 20-612 Lublin, Poland
Monika Krzywicka: Department of Technology Fundamentals, University of Life Sciences, 20-612 Lublin, Poland
Anna Pecyna: Department of Technology Fundamentals, University of Life Sciences, 20-612 Lublin, Poland
Agnieszka Buczaj: Department of Technology Fundamentals, University of Life Sciences, 20-612 Lublin, Poland

Energies, 2021, vol. 14, issue 22, 1-16

Abstract: 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.

Keywords: yield of extraction; energy consumption; pulsed ultrasound; polyphenols; anthocyanins; energy conversion (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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