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
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...
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| Format: | Article |
| Language: | English |
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Association of the Chemical Engineers of Serbia
2009-10-01
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| Series: | Chemical Industry and Chemical Engineering Quarterly |
| Subjects: | |
| Online Access: | http://www.ache.org.rs/CICEQ/2009/No4/CICEQ_Vol15_%20No4_pp271-278_Oct-Dec_2009.pdf |
| _version_ | 1811296167098580992 |
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| author | Jasna Ivanović Slobodan Petrović Irena Žižović Dejan Skala |
| author_facet | Jasna Ivanović Slobodan Petrović Irena Žižović Dejan Skala |
| author_sort | Jasna Ivanović |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-13T05:44:28Z |
| format | Article |
| id | doaj.art-f3055438fce744b7884d527701039384 |
| institution | Directory Open Access Journal |
| issn | 1451-9372 |
| language | English |
| last_indexed | 2024-04-13T05:44:28Z |
| publishDate | 2009-10-01 |
| publisher | Association of the Chemical Engineers of Serbia |
| record_format | Article |
| series | Chemical Industry and Chemical Engineering Quarterly |
| spelling | doaj.art-f3055438fce744b7884d5277010393842022-12-22T03:00:00ZengAssociation of the Chemical Engineers of SerbiaChemical Industry and Chemical Engineering Quarterly1451-93722009-10-01154271278The 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 processesJasna IvanovićSlobodan PetrovićIrena ŽižovićDejan SkalaThe 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.http://www.ache.org.rs/CICEQ/2009/No4/CICEQ_Vol15_%20No4_pp271-278_Oct-Dec_2009.pdfsupercritical extractionultrasonic extractionAloe barbadensis MillerLaurus nobilisexergy analysis |
| spellingShingle | Jasna Ivanović Slobodan Petrović Irena Žižović Dejan Skala 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 Chemical Industry and Chemical Engineering Quarterly supercritical extraction ultrasonic extraction Aloe barbadensis Miller Laurus nobilis exergy analysis |
| 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 |
| title_full | 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 |
| title_fullStr | 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 |
| title_full_unstemmed | 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 |
| title_short | 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 |
| title_sort | 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 |
| topic | supercritical extraction ultrasonic extraction Aloe barbadensis Miller Laurus nobilis exergy analysis |
| url | http://www.ache.org.rs/CICEQ/2009/No4/CICEQ_Vol15_%20No4_pp271-278_Oct-Dec_2009.pdf |
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