The analysis of different processes of extraction: yield of extracts obtained from Aloe vera (Aloe barbadensis Miller) and sweet bay (Laurus nobilis L.) and the exergy analysis of applied processes
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The present study was aimed to investigate and compare the efficiency of different methods for the isolation extract from a plant material. Extracts from dried leaves of Aloe vera (A. barbadensis Mill.) and Sweet Bay (Laurus nobilis L.) were obtained applying the following techniques: supercritical carbon dioxide (SC CO2) extraction at 30 MPa and 100°C, a combined ultrasonic extraction and pre-treatment using SC CO2 (US-SCCO2), and a conventional ultrasonic extraction (US) with 96% ethanol. US-SCCO2 resulted in much higher yields of extracts of aloe and bay compared to SC CO2 extraction. Determined extract's yield was used for calculating the maximum useful work and exergy loss as a measure of irreversibility of the extraction process. Calculated maximum useful work per 1 kg of the extract was ranged from 0.7 to 226 kJ while estimated values of the exergy loss were from 48 to 416 kJ per 1 kg of the extract. The maximum useful work and exergy loss have the largest value for SCE much mor...e than for other processes of extraction (US and US-SCCO2). The pre-treatment of the plant material with SC CO2 before an ultrasound-assisted extraction or the decrease of a particle size used for ultrasound-assisted extraction of Aloe vera has led to the decrease of maximum useful work and exergy loss. Unlike, pre-treatment with SC CO2 followed by ultrasound-assisted extraction increased the exergy loss when bay was used as the plant material.
Кључне речи:
supercritical extraction / ultrasonic extraction / Aloe barbadensis Miller / Laurus nobilis / exergy analysisИзвор:
Chemical Industry & Chemical Engineering Quarterly, 2009, 15, 4, 271-278Издавач:
- Association of the Chemical Engineers of Serbia
Финансирање / пројекти:
- Изоловање, карактеризација, биолошка активност и трансформација природних једињења и синтеза катализатора применом наткритичних флуида, микроталаса и ултразвука (RS-MESTD-MPN2006-2010-142073)
DOI: 10.2298/CICEQ0904271I
ISSN: 1451-9372
WoS: 000275477600010
Scopus: 2-s2.0-77149139865
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Ivanović, Jasna AU - Žižović, Irena AU - Petrović, Slobodan AU - Skala, Dejan PY - 2009 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1392 AB - The present study was aimed to investigate and compare the efficiency of different methods for the isolation extract from a plant material. Extracts from dried leaves of Aloe vera (A. barbadensis Mill.) and Sweet Bay (Laurus nobilis L.) were obtained applying the following techniques: supercritical carbon dioxide (SC CO2) extraction at 30 MPa and 100°C, a combined ultrasonic extraction and pre-treatment using SC CO2 (US-SCCO2), and a conventional ultrasonic extraction (US) with 96% ethanol. US-SCCO2 resulted in much higher yields of extracts of aloe and bay compared to SC CO2 extraction. Determined extract's yield was used for calculating the maximum useful work and exergy loss as a measure of irreversibility of the extraction process. Calculated maximum useful work per 1 kg of the extract was ranged from 0.7 to 226 kJ while estimated values of the exergy loss were from 48 to 416 kJ per 1 kg of the extract. The maximum useful work and exergy loss have the largest value for SCE much more than for other processes of extraction (US and US-SCCO2). The pre-treatment of the plant material with SC CO2 before an ultrasound-assisted extraction or the decrease of a particle size used for ultrasound-assisted extraction of Aloe vera has led to the decrease of maximum useful work and exergy loss. Unlike, pre-treatment with SC CO2 followed by ultrasound-assisted extraction increased the exergy loss when bay was used as the plant material. PB - Association of the Chemical Engineers of Serbia T2 - Chemical Industry & Chemical Engineering Quarterly T1 - The analysis of different processes of extraction: yield of extracts obtained from Aloe vera (Aloe barbadensis Miller) and sweet bay (Laurus nobilis L.) and the exergy analysis of applied processes EP - 278 IS - 4 SP - 271 VL - 15 DO - 10.2298/CICEQ0904271I ER -
@article{ author = "Ivanović, Jasna and Žižović, Irena and Petrović, Slobodan and Skala, Dejan", year = "2009", abstract = "The present study was aimed to investigate and compare the efficiency of different methods for the isolation extract from a plant material. Extracts from dried leaves of Aloe vera (A. barbadensis Mill.) and Sweet Bay (Laurus nobilis L.) were obtained applying the following techniques: supercritical carbon dioxide (SC CO2) extraction at 30 MPa and 100°C, a combined ultrasonic extraction and pre-treatment using SC CO2 (US-SCCO2), and a conventional ultrasonic extraction (US) with 96% ethanol. US-SCCO2 resulted in much higher yields of extracts of aloe and bay compared to SC CO2 extraction. Determined extract's yield was used for calculating the maximum useful work and exergy loss as a measure of irreversibility of the extraction process. Calculated maximum useful work per 1 kg of the extract was ranged from 0.7 to 226 kJ while estimated values of the exergy loss were from 48 to 416 kJ per 1 kg of the extract. The maximum useful work and exergy loss have the largest value for SCE much more than for other processes of extraction (US and US-SCCO2). The pre-treatment of the plant material with SC CO2 before an ultrasound-assisted extraction or the decrease of a particle size used for ultrasound-assisted extraction of Aloe vera has led to the decrease of maximum useful work and exergy loss. Unlike, pre-treatment with SC CO2 followed by ultrasound-assisted extraction increased the exergy loss when bay was used as the plant material.", publisher = "Association of the Chemical Engineers of Serbia", journal = "Chemical Industry & Chemical Engineering Quarterly", title = "The analysis of different processes of extraction: yield of extracts obtained from Aloe vera (Aloe barbadensis Miller) and sweet bay (Laurus nobilis L.) and the exergy analysis of applied processes", pages = "278-271", number = "4", volume = "15", doi = "10.2298/CICEQ0904271I" }
Ivanović, J., Žižović, I., Petrović, S.,& Skala, D.. (2009). The analysis of different processes of extraction: yield of extracts obtained from Aloe vera (Aloe barbadensis Miller) and sweet bay (Laurus nobilis L.) and the exergy analysis of applied processes. in Chemical Industry & Chemical Engineering Quarterly Association of the Chemical Engineers of Serbia., 15(4), 271-278. https://doi.org/10.2298/CICEQ0904271I
Ivanović J, Žižović I, Petrović S, Skala D. The analysis of different processes of extraction: yield of extracts obtained from Aloe vera (Aloe barbadensis Miller) and sweet bay (Laurus nobilis L.) and the exergy analysis of applied processes. in Chemical Industry & Chemical Engineering Quarterly. 2009;15(4):271-278. doi:10.2298/CICEQ0904271I .
Ivanović, Jasna, Žižović, Irena, Petrović, Slobodan, Skala, Dejan, "The analysis of different processes of extraction: yield of extracts obtained from Aloe vera (Aloe barbadensis Miller) and sweet bay (Laurus nobilis L.) and the exergy analysis of applied processes" in Chemical Industry & Chemical Engineering Quarterly, 15, no. 4 (2009):271-278, https://doi.org/10.2298/CICEQ0904271I . .